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mbedtls/tests/suites/test_suite_psa_crypto.function
Jaeden Amero d94d671f14 psa: Test that generator initializers work
2019-01-08 14:28:04 +00:00

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/* BEGIN_HEADER */
#include <stdint.h>
#if defined(MBEDTLS_PSA_CRYPTO_SPM)
#include "spm/psa_defs.h"
#endif
#include "mbedtls/asn1.h"
#include "mbedtls/asn1write.h"
#include "mbedtls/oid.h"
#include "psa/crypto.h"
/** An invalid export length that will never be set by psa_export_key(). */
static const size_t INVALID_EXPORT_LENGTH = ~0U;
/** Test if a buffer contains a constant byte value.
*
* `mem_is_char(buffer, c, size)` is true after `memset(buffer, c, size)`.
*
* \param buffer Pointer to the beginning of the buffer.
* \param c Expected value of every byte.
* \param size Size of the buffer in bytes.
*
* \return 1 if the buffer is all-bits-zero.
* \return 0 if there is at least one nonzero byte.
*/
static int mem_is_char( void *buffer, unsigned char c, size_t size )
{
size_t i;
for( i = 0; i < size; i++ )
{
if( ( (unsigned char *) buffer )[i] != c )
return( 0 );
}
return( 1 );
}
/* Write the ASN.1 INTEGER with the value 2^(bits-1)+x backwards from *p. */
static int asn1_write_10x( unsigned char **p,
unsigned char *start,
size_t bits,
unsigned char x )
{
int ret;
int len = bits / 8 + 1;
if( bits == 0 )
return( MBEDTLS_ERR_ASN1_INVALID_DATA );
if( bits <= 8 && x >= 1 << ( bits - 1 ) )
return( MBEDTLS_ERR_ASN1_INVALID_DATA );
if( *p < start || *p - start < (ptrdiff_t) len )
return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
*p -= len;
( *p )[len-1] = x;
if( bits % 8 == 0 )
( *p )[1] |= 1;
else
( *p )[0] |= 1 << ( bits % 8 );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start,
MBEDTLS_ASN1_INTEGER ) );
return( len );
}
static int construct_fake_rsa_key( unsigned char *buffer,
size_t buffer_size,
unsigned char **p,
size_t bits,
int keypair )
{
size_t half_bits = ( bits + 1 ) / 2;
int ret;
int len = 0;
/* Construct something that looks like a DER encoding of
* as defined by PKCS#1 v2.2 (RFC 8017) section A.1.2:
* RSAPrivateKey ::= SEQUENCE {
* version Version,
* modulus INTEGER, -- n
* publicExponent INTEGER, -- e
* privateExponent INTEGER, -- d
* prime1 INTEGER, -- p
* prime2 INTEGER, -- q
* exponent1 INTEGER, -- d mod (p-1)
* exponent2 INTEGER, -- d mod (q-1)
* coefficient INTEGER, -- (inverse of q) mod p
* otherPrimeInfos OtherPrimeInfos OPTIONAL
* }
* Or, for a public key, the same structure with only
* version, modulus and publicExponent.
*/
*p = buffer + buffer_size;
if( keypair )
{
MBEDTLS_ASN1_CHK_ADD( len, /* pq */
asn1_write_10x( p, buffer, half_bits, 1 ) );
MBEDTLS_ASN1_CHK_ADD( len, /* dq */
asn1_write_10x( p, buffer, half_bits, 1 ) );
MBEDTLS_ASN1_CHK_ADD( len, /* dp */
asn1_write_10x( p, buffer, half_bits, 1 ) );
MBEDTLS_ASN1_CHK_ADD( len, /* q */
asn1_write_10x( p, buffer, half_bits, 1 ) );
MBEDTLS_ASN1_CHK_ADD( len, /* p != q to pass mbedtls sanity checks */
asn1_write_10x( p, buffer, half_bits, 3 ) );
MBEDTLS_ASN1_CHK_ADD( len, /* d */
asn1_write_10x( p, buffer, bits, 1 ) );
}
MBEDTLS_ASN1_CHK_ADD( len, /* e = 65537 */
asn1_write_10x( p, buffer, 17, 1 ) );
MBEDTLS_ASN1_CHK_ADD( len, /* n */
asn1_write_10x( p, buffer, bits, 1 ) );
if( keypair )
MBEDTLS_ASN1_CHK_ADD( len, /* version = 0 */
mbedtls_asn1_write_int( p, buffer, 0 ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, buffer, len ) );
{
const unsigned char tag =
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE;
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, buffer, tag ) );
}
return( len );
}
static int exercise_mac_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
const unsigned char input[] = "foo";
unsigned char mac[PSA_MAC_MAX_SIZE] = {0};
size_t mac_length = sizeof( mac );
if( usage & PSA_KEY_USAGE_SIGN )
{
PSA_ASSERT( psa_mac_sign_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_mac_update( &operation,
input, sizeof( input ) ) );
PSA_ASSERT( psa_mac_sign_finish( &operation,
mac, sizeof( mac ),
&mac_length ) );
}
if( usage & PSA_KEY_USAGE_VERIFY )
{
psa_status_t verify_status =
( usage & PSA_KEY_USAGE_SIGN ?
PSA_SUCCESS :
PSA_ERROR_INVALID_SIGNATURE );
PSA_ASSERT( psa_mac_verify_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_mac_update( &operation,
input, sizeof( input ) ) );
TEST_EQUAL( psa_mac_verify_finish( &operation, mac, mac_length ),
verify_status );
}
return( 1 );
exit:
psa_mac_abort( &operation );
return( 0 );
}
static int exercise_cipher_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
unsigned char iv[16] = {0};
size_t iv_length = sizeof( iv );
const unsigned char plaintext[16] = "Hello, world...";
unsigned char ciphertext[32] = "(wabblewebblewibblewobblewubble)";
size_t ciphertext_length = sizeof( ciphertext );
unsigned char decrypted[sizeof( ciphertext )];
size_t part_length;
if( usage & PSA_KEY_USAGE_ENCRYPT )
{
PSA_ASSERT( psa_cipher_encrypt_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_cipher_generate_iv( &operation,
iv, sizeof( iv ),
&iv_length ) );
PSA_ASSERT( psa_cipher_update( &operation,
plaintext, sizeof( plaintext ),
ciphertext, sizeof( ciphertext ),
&ciphertext_length ) );
PSA_ASSERT( psa_cipher_finish( &operation,
ciphertext + ciphertext_length,
sizeof( ciphertext ) - ciphertext_length,
&part_length ) );
ciphertext_length += part_length;
}
if( usage & PSA_KEY_USAGE_DECRYPT )
{
psa_status_t status;
psa_key_type_t type = PSA_KEY_TYPE_NONE;
if( ! ( usage & PSA_KEY_USAGE_ENCRYPT ) )
{
size_t bits;
TEST_ASSERT( psa_get_key_information( handle, &type, &bits ) );
iv_length = PSA_BLOCK_CIPHER_BLOCK_SIZE( type );
}
PSA_ASSERT( psa_cipher_decrypt_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_cipher_set_iv( &operation,
iv, iv_length ) );
PSA_ASSERT( psa_cipher_update( &operation,
ciphertext, ciphertext_length,
decrypted, sizeof( decrypted ),
&part_length ) );
status = psa_cipher_finish( &operation,
decrypted + part_length,
sizeof( decrypted ) - part_length,
&part_length );
/* For a stream cipher, all inputs are valid. For a block cipher,
* if the input is some aribtrary data rather than an actual
ciphertext, a padding error is likely. */
if( ( usage & PSA_KEY_USAGE_ENCRYPT ) ||
PSA_BLOCK_CIPHER_BLOCK_SIZE( type ) == 1 )
PSA_ASSERT( status );
else
TEST_ASSERT( status == PSA_SUCCESS ||
status == PSA_ERROR_INVALID_PADDING );
}
return( 1 );
exit:
psa_cipher_abort( &operation );
return( 0 );
}
static int exercise_aead_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
unsigned char nonce[16] = {0};
size_t nonce_length = sizeof( nonce );
unsigned char plaintext[16] = "Hello, world...";
unsigned char ciphertext[48] = "(wabblewebblewibblewobblewubble)";
size_t ciphertext_length = sizeof( ciphertext );
size_t plaintext_length = sizeof( ciphertext );
if( usage & PSA_KEY_USAGE_ENCRYPT )
{
PSA_ASSERT( psa_aead_encrypt( handle, alg,
nonce, nonce_length,
NULL, 0,
plaintext, sizeof( plaintext ),
ciphertext, sizeof( ciphertext ),
&ciphertext_length ) );
}
if( usage & PSA_KEY_USAGE_DECRYPT )
{
psa_status_t verify_status =
( usage & PSA_KEY_USAGE_ENCRYPT ?
PSA_SUCCESS :
PSA_ERROR_INVALID_SIGNATURE );
TEST_EQUAL( psa_aead_decrypt( handle, alg,
nonce, nonce_length,
NULL, 0,
ciphertext, ciphertext_length,
plaintext, sizeof( plaintext ),
&plaintext_length ),
verify_status );
}
return( 1 );
exit:
return( 0 );
}
static int exercise_signature_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
unsigned char payload[PSA_HASH_MAX_SIZE] = {1};
size_t payload_length = 16;
unsigned char signature[PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE] = {0};
size_t signature_length = sizeof( signature );
if( usage & PSA_KEY_USAGE_SIGN )
{
/* Some algorithms require the payload to have the size of
* the hash encoded in the algorithm. Use this input size
* even for algorithms that allow other input sizes. */
psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH( alg );
if( hash_alg != 0 )
payload_length = PSA_HASH_SIZE( hash_alg );
PSA_ASSERT( psa_asymmetric_sign( handle, alg,
payload, payload_length,
signature, sizeof( signature ),
&signature_length ) );
}
if( usage & PSA_KEY_USAGE_VERIFY )
{
psa_status_t verify_status =
( usage & PSA_KEY_USAGE_SIGN ?
PSA_SUCCESS :
PSA_ERROR_INVALID_SIGNATURE );
TEST_EQUAL( psa_asymmetric_verify( handle, alg,
payload, payload_length,
signature, signature_length ),
verify_status );
}
return( 1 );
exit:
return( 0 );
}
static int exercise_asymmetric_encryption_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
unsigned char plaintext[256] = "Hello, world...";
unsigned char ciphertext[256] = "(wabblewebblewibblewobblewubble)";
size_t ciphertext_length = sizeof( ciphertext );
size_t plaintext_length = 16;
if( usage & PSA_KEY_USAGE_ENCRYPT )
{
PSA_ASSERT( psa_asymmetric_encrypt( handle, alg,
plaintext, plaintext_length,
NULL, 0,
ciphertext, sizeof( ciphertext ),
&ciphertext_length ) );
}
if( usage & PSA_KEY_USAGE_DECRYPT )
{
psa_status_t status =
psa_asymmetric_decrypt( handle, alg,
ciphertext, ciphertext_length,
NULL, 0,
plaintext, sizeof( plaintext ),
&plaintext_length );
TEST_ASSERT( status == PSA_SUCCESS ||
( ( usage & PSA_KEY_USAGE_ENCRYPT ) == 0 &&
( status == PSA_ERROR_INVALID_ARGUMENT ||
status == PSA_ERROR_INVALID_PADDING ) ) );
}
return( 1 );
exit:
return( 0 );
}
static int exercise_key_derivation_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
unsigned char label[16] = "This is a label.";
size_t label_length = sizeof( label );
unsigned char seed[16] = "abcdefghijklmnop";
size_t seed_length = sizeof( seed );
unsigned char output[1];
if( usage & PSA_KEY_USAGE_DERIVE )
{
PSA_ASSERT( psa_key_derivation( &generator,
handle, alg,
label, label_length,
seed, seed_length,
sizeof( output ) ) );
PSA_ASSERT( psa_generator_read( &generator,
output,
sizeof( output ) ) );
PSA_ASSERT( psa_generator_abort( &generator ) );
}
return( 1 );
exit:
return( 0 );
}
/* We need two keys to exercise key agreement. Exercise the
* private key against its own public key. */
static psa_status_t key_agreement_with_self( psa_crypto_generator_t *generator,
psa_key_handle_t handle,
psa_algorithm_t alg )
{
psa_key_type_t private_key_type;
psa_key_type_t public_key_type;
size_t key_bits;
uint8_t *public_key = NULL;
size_t public_key_length;
/* Return UNKNOWN_ERROR if something other than the final call to
* psa_key_agreement fails. This isn't fully satisfactory, but it's
* good enough: callers will report it as a failed test anyway. */
psa_status_t status = PSA_ERROR_UNKNOWN_ERROR;
PSA_ASSERT( psa_get_key_information( handle,
&private_key_type,
&key_bits ) );
public_key_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEYPAIR( private_key_type );
public_key_length = PSA_KEY_EXPORT_MAX_SIZE( public_key_type, key_bits );
ASSERT_ALLOC( public_key, public_key_length );
PSA_ASSERT( psa_export_public_key( handle,
public_key, public_key_length,
&public_key_length ) );
status = psa_key_agreement( generator, handle,
public_key, public_key_length,
alg );
exit:
mbedtls_free( public_key );
return( status );
}
static int exercise_key_agreement_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
unsigned char output[1];
int ok = 0;
if( usage & PSA_KEY_USAGE_DERIVE )
{
/* We need two keys to exercise key agreement. Exercise the
* private key against its own public key. */
PSA_ASSERT( key_agreement_with_self( &generator, handle, alg ) );
PSA_ASSERT( psa_generator_read( &generator,
output,
sizeof( output ) ) );
PSA_ASSERT( psa_generator_abort( &generator ) );
}
ok = 1;
exit:
return( ok );
}
static int is_oid_of_key_type( psa_key_type_t type,
const uint8_t *oid, size_t oid_length )
{
const uint8_t *expected_oid = NULL;
size_t expected_oid_length = 0;
#if defined(MBEDTLS_RSA_C)
if( PSA_KEY_TYPE_IS_RSA( type ) )
{
expected_oid = (uint8_t *) MBEDTLS_OID_PKCS1_RSA;
expected_oid_length = sizeof( MBEDTLS_OID_PKCS1_RSA ) - 1;
}
else
#endif /* MBEDTLS_RSA_C */
#if defined(MBEDTLS_ECP_C)
if( PSA_KEY_TYPE_IS_ECC( type ) )
{
expected_oid = (uint8_t *) MBEDTLS_OID_EC_ALG_UNRESTRICTED;
expected_oid_length = sizeof( MBEDTLS_OID_EC_ALG_UNRESTRICTED ) - 1;
}
else
#endif /* MBEDTLS_ECP_C */
{
char message[40];
mbedtls_snprintf( message, sizeof( message ),
"OID not known for key type=0x%08lx",
(unsigned long) type );
test_fail( message, __LINE__, __FILE__ );
return( 0 );
}
ASSERT_COMPARE( expected_oid, expected_oid_length, oid, oid_length );
return( 1 );
exit:
return( 0 );
}
static int asn1_skip_integer( unsigned char **p, const unsigned char *end,
size_t min_bits, size_t max_bits,
int must_be_odd )
{
size_t len;
size_t actual_bits;
unsigned char msb;
TEST_EQUAL( mbedtls_asn1_get_tag( p, end, &len,
MBEDTLS_ASN1_INTEGER ),
0 );
/* Tolerate a slight departure from DER encoding:
* - 0 may be represented by an empty string or a 1-byte string.
* - The sign bit may be used as a value bit. */
if( ( len == 1 && ( *p )[0] == 0 ) ||
( len > 1 && ( *p )[0] == 0 && ( ( *p )[1] & 0x80 ) != 0 ) )
{
++( *p );
--len;
}
if( min_bits == 0 && len == 0 )
return( 1 );
msb = ( *p )[0];
TEST_ASSERT( msb != 0 );
actual_bits = 8 * ( len - 1 );
while( msb != 0 )
{
msb >>= 1;
++actual_bits;
}
TEST_ASSERT( actual_bits >= min_bits );
TEST_ASSERT( actual_bits <= max_bits );
if( must_be_odd )
TEST_ASSERT( ( ( *p )[len-1] & 1 ) != 0 );
*p += len;
return( 1 );
exit:
return( 0 );
}
static int asn1_get_implicit_tag( unsigned char **p, const unsigned char *end,
size_t *len,
unsigned char n, unsigned char tag )
{
int ret;
ret = mbedtls_asn1_get_tag( p, end, len,
MBEDTLS_ASN1_CONTEXT_SPECIFIC |
MBEDTLS_ASN1_CONSTRUCTED | ( n ) );
if( ret != 0 )
return( ret );
end = *p + *len;
ret = mbedtls_asn1_get_tag( p, end, len, tag );
if( ret != 0 )
return( ret );
if( *p + *len != end )
return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
return( 0 );
}
static int exported_key_sanity_check( psa_key_type_t type, size_t bits,
uint8_t *exported, size_t exported_length )
{
if( PSA_KEY_TYPE_IS_UNSTRUCTURED( type ) )
TEST_EQUAL( exported_length, ( bits + 7 ) / 8 );
else
TEST_ASSERT( exported_length <= PSA_KEY_EXPORT_MAX_SIZE( type, bits ) );
#if defined(MBEDTLS_DES_C)
if( type == PSA_KEY_TYPE_DES )
{
/* Check the parity bits. */
unsigned i;
for( i = 0; i < bits / 8; i++ )
{
unsigned bit_count = 0;
unsigned m;
for( m = 1; m <= 0x100; m <<= 1 )
{
if( exported[i] & m )
++bit_count;
}
TEST_ASSERT( bit_count % 2 != 0 );
}
}
else
#endif
#if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PK_PARSE_C)
if( type == PSA_KEY_TYPE_RSA_KEYPAIR )
{
uint8_t *p = exported;
uint8_t *end = exported + exported_length;
size_t len;
/* RSAPrivateKey ::= SEQUENCE {
* version INTEGER, -- must be 0
* modulus INTEGER, -- n
* publicExponent INTEGER, -- e
* privateExponent INTEGER, -- d
* prime1 INTEGER, -- p
* prime2 INTEGER, -- q
* exponent1 INTEGER, -- d mod (p-1)
* exponent2 INTEGER, -- d mod (q-1)
* coefficient INTEGER, -- (inverse of q) mod p
* }
*/
TEST_EQUAL( mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_SEQUENCE |
MBEDTLS_ASN1_CONSTRUCTED ), 0 );
TEST_EQUAL( p + len, end );
if( ! asn1_skip_integer( &p, end, 0, 0, 0 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, bits, bits, 1 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, 2, bits, 1 ) )
goto exit;
/* Require d to be at least half the size of n. */
if( ! asn1_skip_integer( &p, end, bits / 2, bits, 1 ) )
goto exit;
/* Require p and q to be at most half the size of n, rounded up. */
if( ! asn1_skip_integer( &p, end, bits / 2, bits / 2 + 1, 1 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, bits / 2, bits / 2 + 1, 1 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, 1, bits / 2 + 1, 0 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, 1, bits / 2 + 1, 0 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, 1, bits / 2 + 1, 0 ) )
goto exit;
TEST_EQUAL( p, end );
}
else
#endif /* MBEDTLS_RSA_C */
#if defined(MBEDTLS_ECP_C)
if( PSA_KEY_TYPE_IS_ECC_KEYPAIR( type ) )
{
/* Just the secret value */
TEST_EQUAL( exported_length, PSA_BITS_TO_BYTES( bits ) );
}
else
#endif /* MBEDTLS_ECP_C */
if( PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) )
{
uint8_t *p = exported;
uint8_t *end = exported + exported_length;
size_t len;
mbedtls_asn1_buf alg;
mbedtls_asn1_buf params;
mbedtls_asn1_bitstring bitstring;
/* SubjectPublicKeyInfo ::= SEQUENCE {
* algorithm AlgorithmIdentifier,
* subjectPublicKey BIT STRING }
* AlgorithmIdentifier ::= SEQUENCE {
* algorithm OBJECT IDENTIFIER,
* parameters ANY DEFINED BY algorithm OPTIONAL }
*/
TEST_EQUAL( mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_SEQUENCE |
MBEDTLS_ASN1_CONSTRUCTED ),
0 );
TEST_EQUAL( p + len, end );
TEST_EQUAL( mbedtls_asn1_get_alg( &p, end, &alg, &params ), 0 );
if( ! is_oid_of_key_type( type, alg.p, alg.len ) )
goto exit;
TEST_EQUAL( mbedtls_asn1_get_bitstring( &p, end, &bitstring ), 0 );
TEST_EQUAL( p, end );
p = bitstring.p;
#if defined(MBEDTLS_RSA_C)
if( type == PSA_KEY_TYPE_RSA_PUBLIC_KEY )
{
/* RSAPublicKey ::= SEQUENCE {
* modulus INTEGER, -- n
* publicExponent INTEGER } -- e
*/
TEST_EQUAL( bitstring.unused_bits, 0 );
TEST_EQUAL( mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_SEQUENCE |
MBEDTLS_ASN1_CONSTRUCTED ),
0 );
TEST_EQUAL( p + len, end );
if( ! asn1_skip_integer( &p, end, bits, bits, 1 ) )
goto exit;
if( ! asn1_skip_integer( &p, end, 2, bits, 1 ) )
goto exit;
TEST_EQUAL( p, end );
}
else
#endif /* MBEDTLS_RSA_C */
#if defined(MBEDTLS_ECP_C)
if( PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY( type ) )
{
/* ECPoint ::= ...
* -- first 8 bits: 0x04 (uncompressed representation);
* -- then x_P as an n-bit string, big endian;
* -- then y_P as a n-bit string, big endian,
* -- where n is the order of the curve.
*/
TEST_EQUAL( bitstring.unused_bits, 0 );
TEST_EQUAL( p + 1 + 2 * PSA_BITS_TO_BYTES( bits ), end );
TEST_EQUAL( p[0], 4 );
}
else
#endif /* MBEDTLS_ECP_C */
{
char message[47];
mbedtls_snprintf( message, sizeof( message ),
"No sanity check for public key type=0x%08lx",
(unsigned long) type );
test_fail( message, __LINE__, __FILE__ );
return( 0 );
}
}
else
{
/* No sanity checks for other types */
}
return( 1 );
exit:
return( 0 );
}
static int exercise_export_key( psa_key_handle_t handle,
psa_key_usage_t usage )
{
psa_key_type_t type;
size_t bits;
uint8_t *exported = NULL;
size_t exported_size = 0;
size_t exported_length = 0;
int ok = 0;
PSA_ASSERT( psa_get_key_information( handle, &type, &bits ) );
if( ( usage & PSA_KEY_USAGE_EXPORT ) == 0 &&
! PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) )
{
TEST_EQUAL( psa_export_key( handle, NULL, 0, &exported_length ),
PSA_ERROR_NOT_PERMITTED );
return( 1 );
}
exported_size = PSA_KEY_EXPORT_MAX_SIZE( type, bits );
ASSERT_ALLOC( exported, exported_size );
PSA_ASSERT( psa_export_key( handle,
exported, exported_size,
&exported_length ) );
ok = exported_key_sanity_check( type, bits, exported, exported_length );
exit:
mbedtls_free( exported );
return( ok );
}
static int exercise_export_public_key( psa_key_handle_t handle )
{
psa_key_type_t type;
psa_key_type_t public_type;
size_t bits;
uint8_t *exported = NULL;
size_t exported_size = 0;
size_t exported_length = 0;
int ok = 0;
PSA_ASSERT( psa_get_key_information( handle, &type, &bits ) );
if( ! PSA_KEY_TYPE_IS_ASYMMETRIC( type ) )
{
TEST_EQUAL( psa_export_public_key( handle, NULL, 0, &exported_length ),
PSA_ERROR_INVALID_ARGUMENT );
return( 1 );
}
public_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEYPAIR( type );
exported_size = PSA_KEY_EXPORT_MAX_SIZE( public_type, bits );
ASSERT_ALLOC( exported, exported_size );
PSA_ASSERT( psa_export_public_key( handle,
exported, exported_size,
&exported_length ) );
ok = exported_key_sanity_check( public_type, bits,
exported, exported_length );
exit:
mbedtls_free( exported );
return( ok );
}
static int exercise_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
int ok;
if( alg == 0 )
ok = 1; /* If no algorihm, do nothing (used for raw data "keys"). */
else if( PSA_ALG_IS_MAC( alg ) )
ok = exercise_mac_key( handle, usage, alg );
else if( PSA_ALG_IS_CIPHER( alg ) )
ok = exercise_cipher_key( handle, usage, alg );
else if( PSA_ALG_IS_AEAD( alg ) )
ok = exercise_aead_key( handle, usage, alg );
else if( PSA_ALG_IS_SIGN( alg ) )
ok = exercise_signature_key( handle, usage, alg );
else if( PSA_ALG_IS_ASYMMETRIC_ENCRYPTION( alg ) )
ok = exercise_asymmetric_encryption_key( handle, usage, alg );
else if( PSA_ALG_IS_KEY_DERIVATION( alg ) )
ok = exercise_key_derivation_key( handle, usage, alg );
else if( PSA_ALG_IS_KEY_AGREEMENT( alg ) )
ok = exercise_key_agreement_key( handle, usage, alg );
else
{
char message[40];
mbedtls_snprintf( message, sizeof( message ),
"No code to exercise alg=0x%08lx",
(unsigned long) alg );
test_fail( message, __LINE__, __FILE__ );
ok = 0;
}
ok = ok && exercise_export_key( handle, usage );
ok = ok && exercise_export_public_key( handle );
return( ok );
}
static psa_key_usage_t usage_to_exercise( psa_key_type_t type,
psa_algorithm_t alg )
{
if( PSA_ALG_IS_MAC( alg ) || PSA_ALG_IS_SIGN( alg ) )
{
return( PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) ?
PSA_KEY_USAGE_VERIFY :
PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY );
}
else if( PSA_ALG_IS_CIPHER( alg ) || PSA_ALG_IS_AEAD( alg ) ||
PSA_ALG_IS_ASYMMETRIC_ENCRYPTION( alg ) )
{
return( PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) ?
PSA_KEY_USAGE_ENCRYPT :
PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT );
}
else if( PSA_ALG_IS_KEY_DERIVATION( alg ) ||
PSA_ALG_IS_KEY_AGREEMENT( alg ) )
{
return( PSA_KEY_USAGE_DERIVE );
}
else
{
return( 0 );
}
}
/* An overapproximation of the amount of storage needed for a key of the
* given type and with the given content. The API doesn't make it easy
* to find a good value for the size. The current implementation doesn't
* care about the value anyway. */
#define KEY_BITS_FROM_DATA( type, data ) \
( data )->len
typedef enum {
IMPORT_KEY = 0,
GENERATE_KEY = 1,
DERIVE_KEY = 2
} generate_method;
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_PSA_CRYPTO_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void static_checks( )
{
size_t max_truncated_mac_size =
PSA_ALG_MAC_TRUNCATION_MASK >> PSA_MAC_TRUNCATION_OFFSET;
/* Check that the length for a truncated MAC always fits in the algorithm
* encoding. The shifted mask is the maximum truncated value. The
* untruncated algorithm may be one byte larger. */
TEST_ASSERT( PSA_MAC_MAX_SIZE <= 1 + max_truncated_mac_size );
}
/* END_CASE */
/* BEGIN_CASE */
void import( data_t *data, int type, int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_status_t expected_status = expected_status_arg;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, KEY_BITS_FROM_DATA( type, data ),
&handle ) );
status = psa_import_key( handle, type, data->x, data->len );
TEST_EQUAL( status, expected_status );
if( status == PSA_SUCCESS )
PSA_ASSERT( psa_destroy_key( handle ) );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void import_twice( int alg_arg, int usage_arg,
int type1_arg, data_t *data1,
int expected_import1_status_arg,
int type2_arg, data_t *data2,
int expected_import2_status_arg )
{
psa_key_handle_t handle = 0;
psa_algorithm_t alg = alg_arg;
psa_key_usage_t usage = usage_arg;
psa_key_type_t type1 = type1_arg;
psa_status_t expected_import1_status = expected_import1_status_arg;
psa_key_type_t type2 = type2_arg;
psa_status_t expected_import2_status = expected_import2_status_arg;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type1,
MAX( KEY_BITS_FROM_DATA( type1, data1 ),
KEY_BITS_FROM_DATA( type2, data2 ) ),
&handle ) );
psa_key_policy_set_usage( &policy, usage, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
status = psa_import_key( handle, type1, data1->x, data1->len );
TEST_EQUAL( status, expected_import1_status );
status = psa_import_key( handle, type2, data2->x, data2->len );
TEST_EQUAL( status, expected_import2_status );
if( expected_import1_status == PSA_SUCCESS ||
expected_import2_status == PSA_SUCCESS )
{
TEST_ASSERT( exercise_key( handle, usage, alg ) );
}
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void import_rsa_made_up( int bits_arg, int keypair, int expected_status_arg )
{
psa_key_handle_t handle = 0;
size_t bits = bits_arg;
psa_status_t expected_status = expected_status_arg;
psa_status_t status;
psa_key_type_t type =
keypair ? PSA_KEY_TYPE_RSA_KEYPAIR : PSA_KEY_TYPE_RSA_PUBLIC_KEY;
size_t buffer_size = /* Slight overapproximations */
keypair ? bits * 9 / 16 + 80 : bits / 8 + 20;
unsigned char *buffer = NULL;
unsigned char *p;
int ret;
size_t length;
PSA_ASSERT( psa_crypto_init( ) );
ASSERT_ALLOC( buffer, buffer_size );
TEST_ASSERT( ( ret = construct_fake_rsa_key( buffer, buffer_size, &p,
bits, keypair ) ) >= 0 );
length = ret;
/* Try importing the key */
PSA_ASSERT( psa_allocate_key( type, bits, &handle ) );
status = psa_import_key( handle, type, p, length );
TEST_EQUAL( status, expected_status );
if( status == PSA_SUCCESS )
PSA_ASSERT( psa_destroy_key( handle ) );
exit:
mbedtls_free( buffer );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void import_export( data_t *data,
int type_arg,
int alg_arg,
int usage_arg,
int expected_bits,
int export_size_delta,
int expected_export_status_arg,
int canonical_input )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_export_status = expected_export_status_arg;
psa_status_t status;
unsigned char *exported = NULL;
unsigned char *reexported = NULL;
size_t export_size;
size_t exported_length = INVALID_EXPORT_LENGTH;
size_t reexported_length;
psa_key_type_t got_type;
size_t got_bits;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
export_size = (ptrdiff_t) data->len + export_size_delta;
ASSERT_ALLOC( exported, export_size );
if( ! canonical_input )
ASSERT_ALLOC( reexported, export_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, expected_bits, &handle ) );
psa_key_policy_set_usage( &policy, usage_arg, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
TEST_EQUAL( psa_get_key_information( handle, NULL, NULL ),
PSA_ERROR_EMPTY_SLOT );
/* Import the key */
PSA_ASSERT( psa_import_key( handle, type,
data->x, data->len ) );
/* Test the key information */
PSA_ASSERT( psa_get_key_information( handle,
&got_type,
&got_bits ) );
TEST_EQUAL( got_type, type );
TEST_EQUAL( got_bits, (size_t) expected_bits );
/* Export the key */
status = psa_export_key( handle,
exported, export_size,
&exported_length );
TEST_EQUAL( status, expected_export_status );
/* The exported length must be set by psa_export_key() to a value between 0
* and export_size. On errors, the exported length must be 0. */
TEST_ASSERT( exported_length != INVALID_EXPORT_LENGTH );
TEST_ASSERT( status == PSA_SUCCESS || exported_length == 0 );
TEST_ASSERT( exported_length <= export_size );
TEST_ASSERT( mem_is_char( exported + exported_length, 0,
export_size - exported_length ) );
if( status != PSA_SUCCESS )
{
TEST_EQUAL( exported_length, 0 );
goto destroy;
}
if( ! exercise_export_key( handle, usage_arg ) )
goto exit;
if( canonical_input )
ASSERT_COMPARE( data->x, data->len, exported, exported_length );
else
{
psa_key_handle_t handle2;
PSA_ASSERT( psa_allocate_key( type, expected_bits, &handle2 ) );
PSA_ASSERT( psa_set_key_policy( handle2, &policy ) );
PSA_ASSERT( psa_import_key( handle2, type,
exported,
exported_length ) );
PSA_ASSERT( psa_export_key( handle2,
reexported,
export_size,
&reexported_length ) );
ASSERT_COMPARE( exported, exported_length,
reexported, reexported_length );
PSA_ASSERT( psa_close_key( handle2 ) );
}
TEST_ASSERT( exported_length <= PSA_KEY_EXPORT_MAX_SIZE( type, got_bits ) );
destroy:
/* Destroy the key */
PSA_ASSERT( psa_destroy_key( handle ) );
TEST_EQUAL( psa_get_key_information( handle, NULL, NULL ),
PSA_ERROR_INVALID_HANDLE );
exit:
mbedtls_free( exported );
mbedtls_free( reexported );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void import_key_nonempty_slot( )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = PSA_KEY_TYPE_RAW_DATA;
psa_status_t status;
const uint8_t data[] = { 0x1, 0x2, 0x3, 0x4, 0x5 };
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, PSA_BYTES_TO_BITS( sizeof( data ) ),
&handle ) );
/* Import the key */
PSA_ASSERT( psa_import_key( handle, type,
data, sizeof( data ) ) );
/* Import the key again */
status = psa_import_key( handle, type, data, sizeof( data ) );
TEST_EQUAL( status, PSA_ERROR_OCCUPIED_SLOT );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void export_invalid_handle( int handle, int expected_export_status_arg )
{
psa_status_t status;
unsigned char *exported = NULL;
size_t export_size = 0;
size_t exported_length = INVALID_EXPORT_LENGTH;
psa_status_t expected_export_status = expected_export_status_arg;
PSA_ASSERT( psa_crypto_init( ) );
/* Export the key */
status = psa_export_key( (psa_key_handle_t) handle,
exported, export_size,
&exported_length );
TEST_EQUAL( status, expected_export_status );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void export_with_no_key_activity( )
{
psa_key_handle_t handle = 0;
psa_algorithm_t alg = PSA_ALG_CTR;
psa_status_t status;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
unsigned char *exported = NULL;
size_t export_size = 0;
size_t exported_length = INVALID_EXPORT_LENGTH;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_RAW_DATA, 0,
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_EXPORT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
/* Export the key */
status = psa_export_key( handle,
exported, export_size,
&exported_length );
TEST_EQUAL( status, PSA_ERROR_EMPTY_SLOT );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_with_no_key_activity( )
{
psa_key_handle_t handle = 0;
psa_status_t status;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
int exercise_alg = PSA_ALG_CTR;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_RAW_DATA, 0,
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT, exercise_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
status = psa_cipher_encrypt_setup( &operation, handle, exercise_alg );
TEST_EQUAL( status, PSA_ERROR_EMPTY_SLOT );
exit:
psa_cipher_abort( &operation );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void export_after_import_failure( data_t *data, int type_arg,
int expected_import_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = type_arg;
psa_status_t status;
unsigned char *exported = NULL;
size_t export_size = 0;
psa_status_t expected_import_status = expected_import_status_arg;
size_t exported_length = INVALID_EXPORT_LENGTH;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, KEY_BITS_FROM_DATA( type, data ),
&handle ) );
/* Import the key - expect failure */
status = psa_import_key( handle, type,
data->x, data->len );
TEST_EQUAL( status, expected_import_status );
/* Export the key */
status = psa_export_key( handle,
exported, export_size,
&exported_length );
TEST_EQUAL( status, PSA_ERROR_EMPTY_SLOT );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_after_import_failure( data_t *data, int type_arg,
int expected_import_status_arg )
{
psa_key_handle_t handle = 0;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_key_type_t type = type_arg;
psa_status_t status;
psa_status_t expected_import_status = expected_import_status_arg;
int exercise_alg = PSA_ALG_CTR;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, KEY_BITS_FROM_DATA( type, data ),
&handle ) );
/* Import the key - expect failure */
status = psa_import_key( handle, type,
data->x, data->len );
TEST_EQUAL( status, expected_import_status );
status = psa_cipher_encrypt_setup( &operation, handle, exercise_alg );
TEST_EQUAL( status, PSA_ERROR_EMPTY_SLOT );
exit:
psa_cipher_abort( &operation );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void export_after_destroy_key( data_t *data, int type_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = type_arg;
psa_status_t status;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_algorithm_t alg = PSA_ALG_CTR;
unsigned char *exported = NULL;
size_t export_size = 0;
size_t exported_length = INVALID_EXPORT_LENGTH;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, KEY_BITS_FROM_DATA( type, data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_EXPORT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
export_size = (ptrdiff_t) data->len;
ASSERT_ALLOC( exported, export_size );
/* Import the key */
PSA_ASSERT( psa_import_key( handle, type,
data->x, data->len ) );
PSA_ASSERT( psa_export_key( handle, exported, export_size,
&exported_length ) );
/* Destroy the key */
PSA_ASSERT( psa_destroy_key( handle ) );
/* Export the key */
status = psa_export_key( handle, exported, export_size,
&exported_length );
TEST_EQUAL( status, PSA_ERROR_INVALID_HANDLE );
exit:
mbedtls_free( exported );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void import_export_public_key( data_t *data,
int type_arg,
int alg_arg,
int export_size_delta,
int expected_export_status_arg,
data_t *expected_public_key )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_export_status = expected_export_status_arg;
psa_status_t status;
unsigned char *exported = NULL;
size_t export_size = expected_public_key->len + export_size_delta;
size_t exported_length = INVALID_EXPORT_LENGTH;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, KEY_BITS_FROM_DATA( type, data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_EXPORT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
/* Import the key */
PSA_ASSERT( psa_import_key( handle, type,
data->x, data->len ) );
/* Export the public key */
ASSERT_ALLOC( exported, export_size );
status = psa_export_public_key( handle,
exported, export_size,
&exported_length );
TEST_EQUAL( status, expected_export_status );
if( status == PSA_SUCCESS )
{
psa_key_type_t public_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEYPAIR( type );
size_t bits;
PSA_ASSERT( psa_get_key_information( handle, NULL, &bits ) );
TEST_ASSERT( expected_public_key->len <=
PSA_KEY_EXPORT_MAX_SIZE( public_type, bits ) );
ASSERT_COMPARE( expected_public_key->x, expected_public_key->len,
exported, exported_length );
}
exit:
mbedtls_free( exported );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void import_and_exercise_key( data_t *data,
int type_arg,
int bits_arg,
int alg_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = type_arg;
size_t bits = bits_arg;
psa_algorithm_t alg = alg_arg;
psa_key_usage_t usage = usage_to_exercise( type, alg );
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_key_type_t got_type;
size_t got_bits;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, KEY_BITS_FROM_DATA( type, data ),
&handle ) );
psa_key_policy_set_usage( &policy, usage, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
/* Import the key */
status = psa_import_key( handle, type, data->x, data->len );
PSA_ASSERT( status );
/* Test the key information */
PSA_ASSERT( psa_get_key_information( handle,
&got_type,
&got_bits ) );
TEST_EQUAL( got_type, type );
TEST_EQUAL( got_bits, bits );
/* Do something with the key according to its type and permitted usage. */
if( ! exercise_key( handle, usage, alg ) )
goto exit;
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_policy( int usage_arg, int alg_arg )
{
psa_key_handle_t handle = 0;
psa_algorithm_t alg = alg_arg;
psa_key_usage_t usage = usage_arg;
psa_key_type_t key_type = PSA_KEY_TYPE_AES;
unsigned char key[32] = {0};
psa_key_policy_t policy_set = PSA_KEY_POLICY_INIT;
psa_key_policy_t policy_get = PSA_KEY_POLICY_INIT;
memset( key, 0x2a, sizeof( key ) );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( sizeof( key ) ),
&handle ) );
psa_key_policy_set_usage( &policy_set, usage, alg );
TEST_EQUAL( psa_key_policy_get_usage( &policy_set ), usage );
TEST_EQUAL( psa_key_policy_get_algorithm( &policy_set ), alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy_set ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key, sizeof( key ) ) );
PSA_ASSERT( psa_get_key_policy( handle, &policy_get ) );
TEST_EQUAL( policy_get.usage, policy_set.usage );
TEST_EQUAL( policy_get.alg, policy_set.alg );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_policy_init( )
{
/* Test each valid way of initializing the object, except for `= {0}`, as
* Clang 5 complains when `-Wmissing-field-initializers` is used, even
* though it's OK by the C standard. We could test for this, but we'd need
* to supress the Clang warning for the test. */
psa_key_policy_t func = psa_key_policy_init( );
psa_key_policy_t init = PSA_KEY_POLICY_INIT;
psa_key_policy_t zero;
memset( &zero, 0, sizeof( zero ) );
/* Although not technically guaranteed by the C standard nor the PSA Crypto
* specification, we test that all valid ways of initializing the object
* have the same bit pattern. This is a stronger requirement that may not
* be valid on all platforms or PSA Crypto implementations, but implies the
* weaker actual requirement is met: that a freshly initialized object, no
* matter how it was initialized, acts the same as any other valid
* initialization. */
TEST_EQUAL( memcmp( &func, &zero, sizeof( zero ) ), 0 );
TEST_EQUAL( memcmp( &init, &zero, sizeof( zero ) ), 0 );
}
/* END_CASE */
/* BEGIN_CASE */
void mac_key_policy( int policy_usage,
int policy_alg,
int key_type,
data_t *key_data,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
psa_status_t status;
unsigned char mac[PSA_MAC_MAX_SIZE];
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
status = psa_mac_sign_setup( &operation, handle, exercise_alg );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_SIGN ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
psa_mac_abort( &operation );
memset( mac, 0, sizeof( mac ) );
status = psa_mac_verify_setup( &operation, handle, exercise_alg );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_VERIFY ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_mac_abort( &operation );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_key_policy( int policy_usage,
int policy_alg,
int key_type,
data_t *key_data,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
status = psa_cipher_encrypt_setup( &operation, handle, exercise_alg );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_ENCRYPT ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
psa_cipher_abort( &operation );
status = psa_cipher_decrypt_setup( &operation, handle, exercise_alg );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_DECRYPT ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_cipher_abort( &operation );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void aead_key_policy( int policy_usage,
int policy_alg,
int key_type,
data_t *key_data,
int nonce_length_arg,
int tag_length_arg,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
unsigned char nonce[16] = {0};
size_t nonce_length = nonce_length_arg;
unsigned char tag[16];
size_t tag_length = tag_length_arg;
size_t output_length;
TEST_ASSERT( nonce_length <= sizeof( nonce ) );
TEST_ASSERT( tag_length <= sizeof( tag ) );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
status = psa_aead_encrypt( handle, exercise_alg,
nonce, nonce_length,
NULL, 0,
NULL, 0,
tag, tag_length,
&output_length );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_ENCRYPT ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
memset( tag, 0, sizeof( tag ) );
status = psa_aead_decrypt( handle, exercise_alg,
nonce, nonce_length,
NULL, 0,
tag, tag_length,
NULL, 0,
&output_length );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_DECRYPT ) != 0 )
TEST_EQUAL( status, PSA_ERROR_INVALID_SIGNATURE );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_encryption_key_policy( int policy_usage,
int policy_alg,
int key_type,
data_t *key_data,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
size_t key_bits;
size_t buffer_length;
unsigned char *buffer = NULL;
size_t output_length;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
PSA_ASSERT( psa_get_key_information( handle,
NULL,
&key_bits ) );
buffer_length = PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE( key_type, key_bits,
exercise_alg );
ASSERT_ALLOC( buffer, buffer_length );
status = psa_asymmetric_encrypt( handle, exercise_alg,
NULL, 0,
NULL, 0,
buffer, buffer_length,
&output_length );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_ENCRYPT ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
if( buffer_length != 0 )
memset( buffer, 0, buffer_length );
status = psa_asymmetric_decrypt( handle, exercise_alg,
buffer, buffer_length,
NULL, 0,
buffer, buffer_length,
&output_length );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_DECRYPT ) != 0 )
TEST_EQUAL( status, PSA_ERROR_INVALID_PADDING );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
mbedtls_free( buffer );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_signature_key_policy( int policy_usage,
int policy_alg,
int key_type,
data_t *key_data,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
unsigned char payload[16] = {1};
size_t payload_length = sizeof( payload );
unsigned char signature[PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE] = {0};
size_t signature_length;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
status = psa_asymmetric_sign( handle, exercise_alg,
payload, payload_length,
signature, sizeof( signature ),
&signature_length );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_SIGN ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
memset( signature, 0, sizeof( signature ) );
status = psa_asymmetric_verify( handle, exercise_alg,
payload, payload_length,
signature, sizeof( signature ) );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_VERIFY ) != 0 )
TEST_EQUAL( status, PSA_ERROR_INVALID_SIGNATURE );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void derive_key_policy( int policy_usage,
int policy_alg,
int key_type,
data_t *key_data,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
status = psa_key_derivation( &generator, handle,
exercise_alg,
NULL, 0,
NULL, 0,
1 );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_DERIVE ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_generator_abort( &generator );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void agreement_key_policy( int policy_usage,
int policy_alg,
int key_type_arg,
data_t *key_data,
int exercise_alg )
{
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_key_type_t key_type = key_type_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, policy_usage, policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
status = key_agreement_with_self( &generator, handle, exercise_alg );
if( policy_alg == exercise_alg &&
( policy_usage & PSA_KEY_USAGE_DERIVE ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
exit:
psa_generator_abort( &generator );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void hash_operation_init( )
{
/* Test each valid way of initializing the object, except for `= {0}`, as
* Clang 5 complains when `-Wmissing-field-initializers` is used, even
* though it's OK by the C standard. We could test for this, but we'd need
* to supress the Clang warning for the test. */
psa_hash_operation_t func = psa_hash_operation_init( );
psa_hash_operation_t init = PSA_HASH_OPERATION_INIT;
psa_hash_operation_t zero;
memset( &zero, 0, sizeof( zero ) );
/* Although not technically guaranteed by the C standard nor the PSA Crypto
* specification, we test that all valid ways of initializing the object
* have the same bit pattern. This is a stronger requirement that may not
* be valid on all platforms or PSA Crypto implementations, but implies the
* weaker actual requirement is met: that a freshly initialized object, no
* matter how it was initialized, acts the same as any other valid
* initialization. */
TEST_EQUAL( memcmp( &func, &zero, sizeof( zero ) ), 0 );
TEST_EQUAL( memcmp( &init, &zero, sizeof( zero ) ), 0 );
}
/* END_CASE */
/* BEGIN_CASE */
void hash_setup( int alg_arg,
int expected_status_arg )
{
psa_algorithm_t alg = alg_arg;
psa_status_t expected_status = expected_status_arg;
psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
status = psa_hash_setup( &operation, alg );
psa_hash_abort( &operation );
TEST_EQUAL( status, expected_status );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void hash_bad_order( )
{
unsigned char input[] = "";
/* SHA-256 hash of an empty string */
unsigned char hash[] = {
0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8,
0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55 };
size_t hash_len;
psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT;
PSA_ASSERT( psa_crypto_init( ) );
/* psa_hash_update without calling psa_hash_setup beforehand */
memset( &operation, 0, sizeof( operation ) );
TEST_EQUAL( psa_hash_update( &operation, input, sizeof( input ) ),
PSA_ERROR_INVALID_ARGUMENT );
/* psa_hash_verify without calling psa_hash_setup beforehand */
memset( &operation, 0, sizeof( operation ) );
TEST_EQUAL( psa_hash_verify( &operation, hash, sizeof( hash ) ),
PSA_ERROR_INVALID_ARGUMENT );
/* psa_hash_finish without calling psa_hash_setup beforehand */
memset( &operation, 0, sizeof( operation ) );
TEST_EQUAL( psa_hash_finish( &operation,
hash, sizeof( hash ), &hash_len ),
PSA_ERROR_INVALID_ARGUMENT );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
void hash_verify_bad_args( )
{
psa_algorithm_t alg = PSA_ALG_SHA_256;
/* SHA-256 hash of an empty string with 2 extra bytes (0xaa and 0xbb)
* appended to it */
unsigned char hash[] = {
0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8,
0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55, 0xaa, 0xbb };
size_t expected_size = PSA_HASH_SIZE( alg );
psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT;
PSA_ASSERT( psa_crypto_init( ) );
/* psa_hash_verify with a smaller hash than expected */
PSA_ASSERT( psa_hash_setup( &operation, alg ) );
TEST_EQUAL( psa_hash_verify( &operation, hash, expected_size - 1 ),
PSA_ERROR_INVALID_SIGNATURE );
/* psa_hash_verify with a non-matching hash */
PSA_ASSERT( psa_hash_setup( &operation, alg ) );
TEST_EQUAL( psa_hash_verify( &operation, hash + 1, expected_size ),
PSA_ERROR_INVALID_SIGNATURE );
/* psa_hash_verify with a hash longer than expected */
PSA_ASSERT( psa_hash_setup( &operation, alg ) );
TEST_EQUAL( psa_hash_verify( &operation, hash, sizeof( hash ) ),
PSA_ERROR_INVALID_SIGNATURE );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
void hash_finish_bad_args( )
{
psa_algorithm_t alg = PSA_ALG_SHA_256;
unsigned char hash[PSA_HASH_MAX_SIZE];
size_t expected_size = PSA_HASH_SIZE( alg );
psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT;
size_t hash_len;
PSA_ASSERT( psa_crypto_init( ) );
/* psa_hash_finish with a smaller hash buffer than expected */
PSA_ASSERT( psa_hash_setup( &operation, alg ) );
TEST_EQUAL( psa_hash_finish( &operation,
hash, expected_size - 1, &hash_len ),
PSA_ERROR_BUFFER_TOO_SMALL );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void mac_operation_init( )
{
/* Test each valid way of initializing the object, except for `= {0}`, as
* Clang 5 complains when `-Wmissing-field-initializers` is used, even
* though it's OK by the C standard. We could test for this, but we'd need
* to supress the Clang warning for the test. */
psa_mac_operation_t func = psa_mac_operation_init( );
psa_mac_operation_t init = PSA_MAC_OPERATION_INIT;
psa_mac_operation_t zero;
memset( &zero, 0, sizeof( zero ) );
/* Although not technically guaranteed by the C standard nor the PSA Crypto
* specification, we test that all valid ways of initializing the object
* have the same bit pattern. This is a stronger requirement that may not
* be valid on all platforms or PSA Crypto implementations, but implies the
* weaker actual requirement is met: that a freshly initialized object, no
* matter how it was initialized, acts the same as any other valid
* initialization. */
TEST_EQUAL( memcmp( &func, &zero, sizeof( zero ) ), 0 );
TEST_EQUAL( memcmp( &init, &zero, sizeof( zero ) ), 0 );
}
/* END_CASE */
/* BEGIN_CASE */
void mac_setup( int key_type_arg,
data_t *key,
int alg_arg,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_status = expected_status_arg;
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy,
PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY,
alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
status = psa_mac_sign_setup( &operation, handle, alg );
psa_mac_abort( &operation );
TEST_EQUAL( status, expected_status );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void mac_sign( int key_type_arg,
data_t *key,
int alg_arg,
data_t *input,
data_t *expected_mac )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
/* Leave a little extra room in the output buffer. At the end of the
* test, we'll check that the implementation didn't overwrite onto
* this extra room. */
uint8_t actual_mac[PSA_MAC_MAX_SIZE + 10];
size_t mac_buffer_size =
PSA_MAC_FINAL_SIZE( key_type, PSA_BYTES_TO_BITS( key->len ), alg );
size_t mac_length = 0;
memset( actual_mac, '+', sizeof( actual_mac ) );
TEST_ASSERT( mac_buffer_size <= PSA_MAC_MAX_SIZE );
TEST_ASSERT( expected_mac->len <= mac_buffer_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_SIGN, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
/* Calculate the MAC. */
PSA_ASSERT( psa_mac_sign_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_mac_update( &operation,
input->x, input->len ) );
PSA_ASSERT( psa_mac_sign_finish( &operation,
actual_mac, mac_buffer_size,
&mac_length ) );
/* Compare with the expected value. */
ASSERT_COMPARE( expected_mac->x, expected_mac->len,
actual_mac, mac_length );
/* Verify that the end of the buffer is untouched. */
TEST_ASSERT( mem_is_char( actual_mac + mac_length, '+',
sizeof( actual_mac ) - mac_length ) );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void mac_verify( int key_type_arg,
data_t *key,
int alg_arg,
data_t *input,
data_t *expected_mac )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
TEST_ASSERT( expected_mac->len <= PSA_MAC_MAX_SIZE );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_mac_verify_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_destroy_key( handle ) );
PSA_ASSERT( psa_mac_update( &operation,
input->x, input->len ) );
PSA_ASSERT( psa_mac_verify_finish( &operation,
expected_mac->x,
expected_mac->len ) );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_operation_init( )
{
/* Test each valid way of initializing the object, except for `= {0}`, as
* Clang 5 complains when `-Wmissing-field-initializers` is used, even
* though it's OK by the C standard. We could test for this, but we'd need
* to supress the Clang warning for the test. */
psa_cipher_operation_t func = psa_cipher_operation_init( );
psa_cipher_operation_t init = PSA_CIPHER_OPERATION_INIT;
psa_cipher_operation_t zero;
memset( &zero, 0, sizeof( zero ) );
/* Although not technically guaranteed by the C standard nor the PSA Crypto
* specification, we test that all valid ways of initializing the object
* have the same bit pattern. This is a stronger requirement that may not
* be valid on all platforms or PSA Crypto implementations, but implies the
* weaker actual requirement is met: that a freshly initialized object, no
* matter how it was initialized, acts the same as any other valid
* initialization. */
TEST_EQUAL( memcmp( &func, &zero, sizeof( zero ) ), 0 );
TEST_EQUAL( memcmp( &init, &zero, sizeof( zero ) ), 0 );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_setup( int key_type_arg,
data_t *key,
int alg_arg,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_status = expected_status_arg;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
status = psa_cipher_encrypt_setup( &operation, handle, alg );
psa_cipher_abort( &operation );
TEST_EQUAL( status, expected_status );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_encrypt( int alg_arg, int key_type_arg,
data_t *key,
data_t *input, data_t *expected_output,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_status_t status;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_status = expected_status_arg;
unsigned char iv[16] = {0};
size_t iv_size;
unsigned char *output = NULL;
size_t output_buffer_size = 0;
size_t function_output_length = 0;
size_t total_output_length = 0;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
iv_size = PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type );
memset( iv, 0x2a, iv_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_cipher_encrypt_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_cipher_set_iv( &operation,
iv, iv_size ) );
output_buffer_size = ( (size_t) input->len +
PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type ) );
ASSERT_ALLOC( output, output_buffer_size );
PSA_ASSERT( psa_cipher_update( &operation,
input->x, input->len,
output, output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
status = psa_cipher_finish( &operation,
output + function_output_length,
output_buffer_size,
&function_output_length );
total_output_length += function_output_length;
TEST_EQUAL( status, expected_status );
if( expected_status == PSA_SUCCESS )
{
PSA_ASSERT( psa_cipher_abort( &operation ) );
ASSERT_COMPARE( expected_output->x, expected_output->len,
output, total_output_length );
}
exit:
mbedtls_free( output );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_encrypt_multipart( int alg_arg, int key_type_arg,
data_t *key,
data_t *input,
int first_part_size,
data_t *expected_output )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char iv[16] = {0};
size_t iv_size;
unsigned char *output = NULL;
size_t output_buffer_size = 0;
size_t function_output_length = 0;
size_t total_output_length = 0;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
iv_size = PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type );
memset( iv, 0x2a, iv_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_cipher_encrypt_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_cipher_set_iv( &operation,
iv, sizeof( iv ) ) );
output_buffer_size = ( (size_t) input->len +
PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type ) );
ASSERT_ALLOC( output, output_buffer_size );
TEST_ASSERT( (unsigned int) first_part_size < input->len );
PSA_ASSERT( psa_cipher_update( &operation, input->x, first_part_size,
output, output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
PSA_ASSERT( psa_cipher_update( &operation,
input->x + first_part_size,
input->len - first_part_size,
output, output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
PSA_ASSERT( psa_cipher_finish( &operation,
output + function_output_length,
output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
PSA_ASSERT( psa_cipher_abort( &operation ) );
ASSERT_COMPARE( expected_output->x, expected_output->len,
output, total_output_length );
exit:
mbedtls_free( output );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_decrypt_multipart( int alg_arg, int key_type_arg,
data_t *key,
data_t *input,
int first_part_size,
data_t *expected_output )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char iv[16] = {0};
size_t iv_size;
unsigned char *output = NULL;
size_t output_buffer_size = 0;
size_t function_output_length = 0;
size_t total_output_length = 0;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
iv_size = PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type );
memset( iv, 0x2a, iv_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DECRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_cipher_decrypt_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_cipher_set_iv( &operation,
iv, sizeof( iv ) ) );
output_buffer_size = ( (size_t) input->len +
PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type ) );
ASSERT_ALLOC( output, output_buffer_size );
TEST_ASSERT( (unsigned int) first_part_size < input->len );
PSA_ASSERT( psa_cipher_update( &operation,
input->x, first_part_size,
output, output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
PSA_ASSERT( psa_cipher_update( &operation,
input->x + first_part_size,
input->len - first_part_size,
output, output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
PSA_ASSERT( psa_cipher_finish( &operation,
output + function_output_length,
output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
PSA_ASSERT( psa_cipher_abort( &operation ) );
ASSERT_COMPARE( expected_output->x, expected_output->len,
output, total_output_length );
exit:
mbedtls_free( output );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_decrypt( int alg_arg, int key_type_arg,
data_t *key,
data_t *input, data_t *expected_output,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_status_t status;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_status = expected_status_arg;
unsigned char iv[16] = {0};
size_t iv_size;
unsigned char *output = NULL;
size_t output_buffer_size = 0;
size_t function_output_length = 0;
size_t total_output_length = 0;
psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
iv_size = PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type );
memset( iv, 0x2a, iv_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DECRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_cipher_decrypt_setup( &operation,
handle, alg ) );
PSA_ASSERT( psa_cipher_set_iv( &operation,
iv, iv_size ) );
output_buffer_size = ( (size_t) input->len +
PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type ) );
ASSERT_ALLOC( output, output_buffer_size );
PSA_ASSERT( psa_cipher_update( &operation,
input->x, input->len,
output, output_buffer_size,
&function_output_length ) );
total_output_length += function_output_length;
status = psa_cipher_finish( &operation,
output + function_output_length,
output_buffer_size,
&function_output_length );
total_output_length += function_output_length;
TEST_EQUAL( status, expected_status );
if( expected_status == PSA_SUCCESS )
{
PSA_ASSERT( psa_cipher_abort( &operation ) );
ASSERT_COMPARE( expected_output->x, expected_output->len,
output, total_output_length );
}
exit:
mbedtls_free( output );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_verify_output( int alg_arg, int key_type_arg,
data_t *key,
data_t *input )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char iv[16] = {0};
size_t iv_size = 16;
size_t iv_length = 0;
unsigned char *output1 = NULL;
size_t output1_size = 0;
size_t output1_length = 0;
unsigned char *output2 = NULL;
size_t output2_size = 0;
size_t output2_length = 0;
size_t function_output_length = 0;
psa_cipher_operation_t operation1 = PSA_CIPHER_OPERATION_INIT;
psa_cipher_operation_t operation2 = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_cipher_encrypt_setup( &operation1,
handle, alg ) );
PSA_ASSERT( psa_cipher_decrypt_setup( &operation2,
handle, alg ) );
PSA_ASSERT( psa_cipher_generate_iv( &operation1,
iv, iv_size,
&iv_length ) );
output1_size = ( (size_t) input->len +
PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type ) );
ASSERT_ALLOC( output1, output1_size );
PSA_ASSERT( psa_cipher_update( &operation1, input->x, input->len,
output1, output1_size,
&output1_length ) );
PSA_ASSERT( psa_cipher_finish( &operation1,
output1 + output1_length, output1_size,
&function_output_length ) );
output1_length += function_output_length;
PSA_ASSERT( psa_cipher_abort( &operation1 ) );
output2_size = output1_length;
ASSERT_ALLOC( output2, output2_size );
PSA_ASSERT( psa_cipher_set_iv( &operation2,
iv, iv_length ) );
PSA_ASSERT( psa_cipher_update( &operation2, output1, output1_length,
output2, output2_size,
&output2_length ) );
function_output_length = 0;
PSA_ASSERT( psa_cipher_finish( &operation2,
output2 + output2_length,
output2_size,
&function_output_length ) );
output2_length += function_output_length;
PSA_ASSERT( psa_cipher_abort( &operation2 ) );
ASSERT_COMPARE( input->x, input->len, output2, output2_length );
exit:
mbedtls_free( output1 );
mbedtls_free( output2 );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void cipher_verify_output_multipart( int alg_arg,
int key_type_arg,
data_t *key,
data_t *input,
int first_part_size )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char iv[16] = {0};
size_t iv_size = 16;
size_t iv_length = 0;
unsigned char *output1 = NULL;
size_t output1_buffer_size = 0;
size_t output1_length = 0;
unsigned char *output2 = NULL;
size_t output2_buffer_size = 0;
size_t output2_length = 0;
size_t function_output_length;
psa_cipher_operation_t operation1 = PSA_CIPHER_OPERATION_INIT;
psa_cipher_operation_t operation2 = PSA_CIPHER_OPERATION_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key->x, key->len ) );
PSA_ASSERT( psa_cipher_encrypt_setup( &operation1,
handle, alg ) );
PSA_ASSERT( psa_cipher_decrypt_setup( &operation2,
handle, alg ) );
PSA_ASSERT( psa_cipher_generate_iv( &operation1,
iv, iv_size,
&iv_length ) );
output1_buffer_size = ( (size_t) input->len +
PSA_BLOCK_CIPHER_BLOCK_SIZE( key_type ) );
ASSERT_ALLOC( output1, output1_buffer_size );
TEST_ASSERT( (unsigned int) first_part_size < input->len );
PSA_ASSERT( psa_cipher_update( &operation1, input->x, first_part_size,
output1, output1_buffer_size,
&function_output_length ) );
output1_length += function_output_length;
PSA_ASSERT( psa_cipher_update( &operation1,
input->x + first_part_size,
input->len - first_part_size,
output1, output1_buffer_size,
&function_output_length ) );
output1_length += function_output_length;
PSA_ASSERT( psa_cipher_finish( &operation1,
output1 + output1_length,
output1_buffer_size - output1_length,
&function_output_length ) );
output1_length += function_output_length;
PSA_ASSERT( psa_cipher_abort( &operation1 ) );
output2_buffer_size = output1_length;
ASSERT_ALLOC( output2, output2_buffer_size );
PSA_ASSERT( psa_cipher_set_iv( &operation2,
iv, iv_length ) );
PSA_ASSERT( psa_cipher_update( &operation2, output1, first_part_size,
output2, output2_buffer_size,
&function_output_length ) );
output2_length += function_output_length;
PSA_ASSERT( psa_cipher_update( &operation2,
output1 + first_part_size,
output1_length - first_part_size,
output2, output2_buffer_size,
&function_output_length ) );
output2_length += function_output_length;
PSA_ASSERT( psa_cipher_finish( &operation2,
output2 + output2_length,
output2_buffer_size - output2_length,
&function_output_length ) );
output2_length += function_output_length;
PSA_ASSERT( psa_cipher_abort( &operation2 ) );
ASSERT_COMPARE( input->x, input->len, output2, output2_length );
exit:
mbedtls_free( output1 );
mbedtls_free( output2 );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void aead_encrypt_decrypt( int key_type_arg, data_t *key_data,
int alg_arg,
data_t *nonce,
data_t *additional_data,
data_t *input_data,
int expected_result_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char *output_data = NULL;
size_t output_size = 0;
size_t output_length = 0;
unsigned char *output_data2 = NULL;
size_t output_length2 = 0;
size_t tag_length = 16;
psa_status_t expected_result = expected_result_arg;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
output_size = input_data->len + tag_length;
ASSERT_ALLOC( output_data, output_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key_data->len ),
&handle ) );
psa_key_policy_set_usage( &policy,
PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT,
alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x, key_data->len ) );
TEST_EQUAL( psa_aead_encrypt( handle, alg,
nonce->x, nonce->len,
additional_data->x,
additional_data->len,
input_data->x, input_data->len,
output_data, output_size,
&output_length ),
expected_result );
if( PSA_SUCCESS == expected_result )
{
ASSERT_ALLOC( output_data2, output_length );
TEST_EQUAL( psa_aead_decrypt( handle, alg,
nonce->x, nonce->len,
additional_data->x,
additional_data->len,
output_data, output_length,
output_data2, output_length,
&output_length2 ),
expected_result );
ASSERT_COMPARE( input_data->x, input_data->len,
output_data2, output_length2 );
}
exit:
psa_destroy_key( handle );
mbedtls_free( output_data );
mbedtls_free( output_data2 );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void aead_encrypt( int key_type_arg, data_t *key_data,
int alg_arg,
data_t *nonce,
data_t *additional_data,
data_t *input_data,
data_t *expected_result )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char *output_data = NULL;
size_t output_size = 0;
size_t output_length = 0;
size_t tag_length = 16;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
output_size = input_data->len + tag_length;
ASSERT_ALLOC( output_data, output_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key_data->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT , alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
PSA_ASSERT( psa_aead_encrypt( handle, alg,
nonce->x, nonce->len,
additional_data->x, additional_data->len,
input_data->x, input_data->len,
output_data, output_size,
&output_length ) );
ASSERT_COMPARE( expected_result->x, expected_result->len,
output_data, output_length );
exit:
psa_destroy_key( handle );
mbedtls_free( output_data );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void aead_decrypt( int key_type_arg, data_t *key_data,
int alg_arg,
data_t *nonce,
data_t *additional_data,
data_t *input_data,
data_t *expected_data,
int expected_result_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char *output_data = NULL;
size_t output_size = 0;
size_t output_length = 0;
size_t tag_length = 16;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t expected_result = expected_result_arg;
output_size = input_data->len + tag_length;
ASSERT_ALLOC( output_data, output_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key_data->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DECRYPT , alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
TEST_EQUAL( psa_aead_decrypt( handle, alg,
nonce->x, nonce->len,
additional_data->x,
additional_data->len,
input_data->x, input_data->len,
output_data, output_size,
&output_length ),
expected_result );
if( expected_result == PSA_SUCCESS )
ASSERT_COMPARE( expected_data->x, expected_data->len,
output_data, output_length );
exit:
psa_destroy_key( handle );
mbedtls_free( output_data );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void signature_size( int type_arg,
int bits,
int alg_arg,
int expected_size_arg )
{
psa_key_type_t type = type_arg;
psa_algorithm_t alg = alg_arg;
size_t actual_size = PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( type, bits, alg );
TEST_EQUAL( actual_size, (size_t) expected_size_arg );
exit:
;
}
/* END_CASE */
/* BEGIN_CASE */
void sign_deterministic( int key_type_arg, data_t *key_data,
int alg_arg, data_t *input_data,
data_t *output_data )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
size_t key_bits;
unsigned char *signature = NULL;
size_t signature_size;
size_t signature_length = 0xdeadbeef;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_SIGN, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
PSA_ASSERT( psa_get_key_information( handle,
NULL,
&key_bits ) );
/* Allocate a buffer which has the size advertized by the
* library. */
signature_size = PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( key_type,
key_bits, alg );
TEST_ASSERT( signature_size != 0 );
TEST_ASSERT( signature_size <= PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE );
ASSERT_ALLOC( signature, signature_size );
/* Perform the signature. */
PSA_ASSERT( psa_asymmetric_sign( handle, alg,
input_data->x, input_data->len,
signature, signature_size,
&signature_length ) );
/* Verify that the signature is what is expected. */
ASSERT_COMPARE( output_data->x, output_data->len,
signature, signature_length );
exit:
psa_destroy_key( handle );
mbedtls_free( signature );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void sign_fail( int key_type_arg, data_t *key_data,
int alg_arg, data_t *input_data,
int signature_size_arg, int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
size_t signature_size = signature_size_arg;
psa_status_t actual_status;
psa_status_t expected_status = expected_status_arg;
unsigned char *signature = NULL;
size_t signature_length = 0xdeadbeef;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
ASSERT_ALLOC( signature, signature_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_SIGN, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
actual_status = psa_asymmetric_sign( handle, alg,
input_data->x, input_data->len,
signature, signature_size,
&signature_length );
TEST_EQUAL( actual_status, expected_status );
/* The value of *signature_length is unspecified on error, but
* whatever it is, it should be less than signature_size, so that
* if the caller tries to read *signature_length bytes without
* checking the error code then they don't overflow a buffer. */
TEST_ASSERT( signature_length <= signature_size );
exit:
psa_destroy_key( handle );
mbedtls_free( signature );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void sign_verify( int key_type_arg, data_t *key_data,
int alg_arg, data_t *input_data )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
size_t key_bits;
unsigned char *signature = NULL;
size_t signature_size;
size_t signature_length = 0xdeadbeef;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy,
PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY,
alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
PSA_ASSERT( psa_get_key_information( handle,
NULL,
&key_bits ) );
/* Allocate a buffer which has the size advertized by the
* library. */
signature_size = PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( key_type,
key_bits, alg );
TEST_ASSERT( signature_size != 0 );
TEST_ASSERT( signature_size <= PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE );
ASSERT_ALLOC( signature, signature_size );
/* Perform the signature. */
PSA_ASSERT( psa_asymmetric_sign( handle, alg,
input_data->x, input_data->len,
signature, signature_size,
&signature_length ) );
/* Check that the signature length looks sensible. */
TEST_ASSERT( signature_length <= signature_size );
TEST_ASSERT( signature_length > 0 );
/* Use the library to verify that the signature is correct. */
PSA_ASSERT( psa_asymmetric_verify(
handle, alg,
input_data->x, input_data->len,
signature, signature_length ) );
if( input_data->len != 0 )
{
/* Flip a bit in the input and verify that the signature is now
* detected as invalid. Flip a bit at the beginning, not at the end,
* because ECDSA may ignore the last few bits of the input. */
input_data->x[0] ^= 1;
TEST_EQUAL( psa_asymmetric_verify( handle, alg,
input_data->x, input_data->len,
signature, signature_length ),
PSA_ERROR_INVALID_SIGNATURE );
}
exit:
psa_destroy_key( handle );
mbedtls_free( signature );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_verify( int key_type_arg, data_t *key_data,
int alg_arg, data_t *hash_data,
data_t *signature_data )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
TEST_ASSERT( signature_data->len <= PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
PSA_ASSERT( psa_asymmetric_verify( handle, alg,
hash_data->x, hash_data->len,
signature_data->x,
signature_data->len ) );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_verify_fail( int key_type_arg, data_t *key_data,
int alg_arg, data_t *hash_data,
data_t *signature_data,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t actual_status;
psa_status_t expected_status = expected_status_arg;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
actual_status = psa_asymmetric_verify( handle, alg,
hash_data->x, hash_data->len,
signature_data->x,
signature_data->len );
TEST_EQUAL( actual_status, expected_status );
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_encrypt( int key_type_arg,
data_t *key_data,
int alg_arg,
data_t *input_data,
data_t *label,
int expected_output_length_arg,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
size_t expected_output_length = expected_output_length_arg;
size_t key_bits;
unsigned char *output = NULL;
size_t output_size;
size_t output_length = ~0;
psa_status_t actual_status;
psa_status_t expected_status = expected_status_arg;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
/* Import the key */
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
/* Determine the maximum output length */
PSA_ASSERT( psa_get_key_information( handle,
NULL,
&key_bits ) );
output_size = PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE( key_type, key_bits, alg );
ASSERT_ALLOC( output, output_size );
/* Encrypt the input */
actual_status = psa_asymmetric_encrypt( handle, alg,
input_data->x, input_data->len,
label->x, label->len,
output, output_size,
&output_length );
TEST_EQUAL( actual_status, expected_status );
TEST_EQUAL( output_length, expected_output_length );
/* If the label is empty, the test framework puts a non-null pointer
* in label->x. Test that a null pointer works as well. */
if( label->len == 0 )
{
output_length = ~0;
if( output_size != 0 )
memset( output, 0, output_size );
actual_status = psa_asymmetric_encrypt( handle, alg,
input_data->x, input_data->len,
NULL, label->len,
output, output_size,
&output_length );
TEST_EQUAL( actual_status, expected_status );
TEST_EQUAL( output_length, expected_output_length );
}
exit:
psa_destroy_key( handle );
mbedtls_free( output );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_encrypt_decrypt( int key_type_arg,
data_t *key_data,
int alg_arg,
data_t *input_data,
data_t *label )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
size_t key_bits;
unsigned char *output = NULL;
size_t output_size;
size_t output_length = ~0;
unsigned char *output2 = NULL;
size_t output2_size;
size_t output2_length = ~0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy,
PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT,
alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
/* Determine the maximum ciphertext length */
PSA_ASSERT( psa_get_key_information( handle,
NULL,
&key_bits ) );
output_size = PSA_ASYMMETRIC_ENCRYPT_OUTPUT_SIZE( key_type, key_bits, alg );
ASSERT_ALLOC( output, output_size );
output2_size = input_data->len;
ASSERT_ALLOC( output2, output2_size );
/* We test encryption by checking that encrypt-then-decrypt gives back
* the original plaintext because of the non-optional random
* part of encryption process which prevents using fixed vectors. */
PSA_ASSERT( psa_asymmetric_encrypt( handle, alg,
input_data->x, input_data->len,
label->x, label->len,
output, output_size,
&output_length ) );
/* We don't know what ciphertext length to expect, but check that
* it looks sensible. */
TEST_ASSERT( output_length <= output_size );
PSA_ASSERT( psa_asymmetric_decrypt( handle, alg,
output, output_length,
label->x, label->len,
output2, output2_size,
&output2_length ) );
ASSERT_COMPARE( input_data->x, input_data->len,
output2, output2_length );
exit:
psa_destroy_key( handle );
mbedtls_free( output );
mbedtls_free( output2 );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_decrypt( int key_type_arg,
data_t *key_data,
int alg_arg,
data_t *input_data,
data_t *label,
data_t *expected_data )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char *output = NULL;
size_t output_size = 0;
size_t output_length = ~0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
output_size = key_data->len;
ASSERT_ALLOC( output, output_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DECRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
PSA_ASSERT( psa_asymmetric_decrypt( handle, alg,
input_data->x, input_data->len,
label->x, label->len,
output,
output_size,
&output_length ) );
ASSERT_COMPARE( expected_data->x, expected_data->len,
output, output_length );
/* If the label is empty, the test framework puts a non-null pointer
* in label->x. Test that a null pointer works as well. */
if( label->len == 0 )
{
output_length = ~0;
if( output_size != 0 )
memset( output, 0, output_size );
PSA_ASSERT( psa_asymmetric_decrypt( handle, alg,
input_data->x, input_data->len,
NULL, label->len,
output,
output_size,
&output_length ) );
ASSERT_COMPARE( expected_data->x, expected_data->len,
output, output_length );
}
exit:
psa_destroy_key( handle );
mbedtls_free( output );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void asymmetric_decrypt_fail( int key_type_arg,
data_t *key_data,
int alg_arg,
data_t *input_data,
data_t *label,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
unsigned char *output = NULL;
size_t output_size = 0;
size_t output_length = ~0;
psa_status_t actual_status;
psa_status_t expected_status = expected_status_arg;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
output_size = key_data->len;
ASSERT_ALLOC( output, output_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
KEY_BITS_FROM_DATA( key_type, key_data ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DECRYPT, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
actual_status = psa_asymmetric_decrypt( handle, alg,
input_data->x, input_data->len,
label->x, label->len,
output, output_size,
&output_length );
TEST_EQUAL( actual_status, expected_status );
TEST_ASSERT( output_length <= output_size );
/* If the label is empty, the test framework puts a non-null pointer
* in label->x. Test that a null pointer works as well. */
if( label->len == 0 )
{
output_length = ~0;
if( output_size != 0 )
memset( output, 0, output_size );
actual_status = psa_asymmetric_decrypt( handle, alg,
input_data->x, input_data->len,
NULL, label->len,
output, output_size,
&output_length );
TEST_EQUAL( actual_status, expected_status );
TEST_ASSERT( output_length <= output_size );
}
exit:
psa_destroy_key( handle );
mbedtls_free( output );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void crypto_generator_init( )
{
/* Test each valid way of initializing the object, except for `= {0}`, as
* Clang 5 complains when `-Wmissing-field-initializers` is used, even
* though it's OK by the C standard. We could test for this, but we'd need
* to supress the Clang warning for the test. */
psa_crypto_generator_t func = psa_crypto_generator_init( );
psa_crypto_generator_t init = PSA_CRYPTO_GENERATOR_INIT;
psa_crypto_generator_t zero;
memset( &zero, 0, sizeof( zero ) );
/* Although not technically guaranteed by the C standard nor the PSA Crypto
* specification, we test that all valid ways of initializing the object
* have the same bit pattern. This is a stronger requirement that may not
* be valid on all platforms or PSA Crypto implementations, but implies the
* weaker actual requirement is met: that a freshly initialized object, no
* matter how it was initialized, acts the same as any other valid
* initialization. */
TEST_EQUAL( memcmp( &func, &zero, sizeof( zero ) ), 0 );
TEST_EQUAL( memcmp( &init, &zero, sizeof( zero ) ), 0 );
}
/* END_CASE */
/* BEGIN_CASE */
void derive_setup( int key_type_arg,
data_t *key_data,
int alg_arg,
data_t *salt,
data_t *label,
int requested_capacity_arg,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
size_t key_type = key_type_arg;
psa_algorithm_t alg = alg_arg;
size_t requested_capacity = requested_capacity_arg;
psa_status_t expected_status = expected_status_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type, PSA_BYTES_TO_BITS( key_data->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data->x,
key_data->len ) );
TEST_EQUAL( psa_key_derivation( &generator, handle, alg,
salt->x, salt->len,
label->x, label->len,
requested_capacity ),
expected_status );
exit:
psa_generator_abort( &generator );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void test_derive_invalid_generator_state( )
{
psa_key_handle_t handle = 0;
size_t key_type = PSA_KEY_TYPE_DERIVE;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_algorithm_t alg = PSA_ALG_HKDF( PSA_ALG_SHA_256 );
uint8_t buffer[42];
size_t capacity = sizeof( buffer );
const uint8_t key_data[22] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b};
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( key_type,
PSA_BYTES_TO_BITS( sizeof( key_data ) ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, key_type,
key_data,
sizeof( key_data ) ) );
/* valid key derivation */
PSA_ASSERT( psa_key_derivation( &generator, handle, alg,
NULL, 0,
NULL, 0,
capacity ) );
/* state of generator shouldn't allow additional generation */
TEST_EQUAL( psa_key_derivation( &generator, handle, alg,
NULL, 0,
NULL, 0,
capacity ),
PSA_ERROR_BAD_STATE );
PSA_ASSERT( psa_generator_read( &generator, buffer, capacity ) );
TEST_EQUAL( psa_generator_read( &generator, buffer, capacity ),
PSA_ERROR_INSUFFICIENT_CAPACITY );
exit:
psa_generator_abort( &generator );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void test_derive_invalid_generator_tests( )
{
uint8_t output_buffer[16];
size_t buffer_size = 16;
size_t capacity = 0;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
TEST_ASSERT( psa_generator_read( &generator, output_buffer, buffer_size )
== PSA_ERROR_INSUFFICIENT_CAPACITY ); // should be PSA_ERROR_BAD_STATE:#183
TEST_ASSERT( psa_get_generator_capacity( &generator, &capacity )
== PSA_SUCCESS ); // should be PSA_ERROR_BAD_STATE:#183
PSA_ASSERT( psa_generator_abort( &generator ) );
TEST_ASSERT( psa_generator_read( &generator, output_buffer, buffer_size )
== PSA_ERROR_INSUFFICIENT_CAPACITY ); // should be PSA_ERROR_BAD_STATE:#183
TEST_ASSERT( psa_get_generator_capacity( &generator, &capacity )
== PSA_SUCCESS );// should be PSA_ERROR_BAD_STATE:#183
exit:
psa_generator_abort( &generator );
}
/* END_CASE */
/* BEGIN_CASE */
void derive_output( int alg_arg,
data_t *key_data,
data_t *salt,
data_t *label,
int requested_capacity_arg,
data_t *expected_output1,
data_t *expected_output2 )
{
psa_key_handle_t handle = 0;
psa_algorithm_t alg = alg_arg;
size_t requested_capacity = requested_capacity_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
uint8_t *expected_outputs[2] =
{expected_output1->x, expected_output2->x};
size_t output_sizes[2] =
{expected_output1->len, expected_output2->len};
size_t output_buffer_size = 0;
uint8_t *output_buffer = NULL;
size_t expected_capacity;
size_t current_capacity;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_status_t status;
unsigned i;
for( i = 0; i < ARRAY_LENGTH( expected_outputs ); i++ )
{
if( output_sizes[i] > output_buffer_size )
output_buffer_size = output_sizes[i];
if( output_sizes[i] == 0 )
expected_outputs[i] = NULL;
}
ASSERT_ALLOC( output_buffer, output_buffer_size );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_DERIVE,
PSA_BYTES_TO_BITS( key_data->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, PSA_KEY_TYPE_DERIVE,
key_data->x,
key_data->len ) );
/* Extraction phase. */
PSA_ASSERT( psa_key_derivation( &generator, handle, alg,
salt->x, salt->len,
label->x, label->len,
requested_capacity ) );
PSA_ASSERT( psa_get_generator_capacity( &generator,
&current_capacity ) );
TEST_EQUAL( current_capacity, requested_capacity );
expected_capacity = requested_capacity;
/* Expansion phase. */
for( i = 0; i < ARRAY_LENGTH( expected_outputs ); i++ )
{
/* Read some bytes. */
status = psa_generator_read( &generator,
output_buffer, output_sizes[i] );
if( expected_capacity == 0 && output_sizes[i] == 0 )
{
/* Reading 0 bytes when 0 bytes are available can go either way. */
TEST_ASSERT( status == PSA_SUCCESS ||
status == PSA_ERROR_INSUFFICIENT_CAPACITY );
continue;
}
else if( expected_capacity == 0 ||
output_sizes[i] > expected_capacity )
{
/* Capacity exceeded. */
TEST_EQUAL( status, PSA_ERROR_INSUFFICIENT_CAPACITY );
expected_capacity = 0;
continue;
}
/* Success. Check the read data. */
PSA_ASSERT( status );
if( output_sizes[i] != 0 )
ASSERT_COMPARE( output_buffer, output_sizes[i],
expected_outputs[i], output_sizes[i] );
/* Check the generator status. */
expected_capacity -= output_sizes[i];
PSA_ASSERT( psa_get_generator_capacity( &generator,
&current_capacity ) );
TEST_EQUAL( expected_capacity, current_capacity );
}
PSA_ASSERT( psa_generator_abort( &generator ) );
exit:
mbedtls_free( output_buffer );
psa_generator_abort( &generator );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void derive_full( int alg_arg,
data_t *key_data,
data_t *salt,
data_t *label,
int requested_capacity_arg )
{
psa_key_handle_t handle = 0;
psa_algorithm_t alg = alg_arg;
size_t requested_capacity = requested_capacity_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
unsigned char output_buffer[16];
size_t expected_capacity = requested_capacity;
size_t current_capacity;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_DERIVE,
PSA_BYTES_TO_BITS( key_data->len ),
&handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, PSA_KEY_TYPE_DERIVE,
key_data->x,
key_data->len ) );
/* Extraction phase. */
PSA_ASSERT( psa_key_derivation( &generator, handle, alg,
salt->x, salt->len,
label->x, label->len,
requested_capacity ) );
PSA_ASSERT( psa_get_generator_capacity( &generator,
&current_capacity ) );
TEST_EQUAL( current_capacity, expected_capacity );
/* Expansion phase. */
while( current_capacity > 0 )
{
size_t read_size = sizeof( output_buffer );
if( read_size > current_capacity )
read_size = current_capacity;
PSA_ASSERT( psa_generator_read( &generator,
output_buffer,
read_size ) );
expected_capacity -= read_size;
PSA_ASSERT( psa_get_generator_capacity( &generator,
&current_capacity ) );
TEST_EQUAL( current_capacity, expected_capacity );
}
/* Check that the generator refuses to go over capacity. */
TEST_EQUAL( psa_generator_read( &generator, output_buffer, 1 ),
PSA_ERROR_INSUFFICIENT_CAPACITY );
PSA_ASSERT( psa_generator_abort( &generator ) );
exit:
psa_generator_abort( &generator );
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void derive_key_exercise( int alg_arg,
data_t *key_data,
data_t *salt,
data_t *label,
int derived_type_arg,
int derived_bits_arg,
int derived_usage_arg,
int derived_alg_arg )
{
psa_key_handle_t base_handle = 0;
psa_key_handle_t derived_handle = 0;
psa_algorithm_t alg = alg_arg;
psa_key_type_t derived_type = derived_type_arg;
size_t derived_bits = derived_bits_arg;
psa_key_usage_t derived_usage = derived_usage_arg;
psa_algorithm_t derived_alg = derived_alg_arg;
size_t capacity = PSA_BITS_TO_BYTES( derived_bits );
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_key_type_t got_type;
size_t got_bits;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_DERIVE,
PSA_BYTES_TO_BITS( key_data->len ),
&base_handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( base_handle, &policy ) );
PSA_ASSERT( psa_import_key( base_handle, PSA_KEY_TYPE_DERIVE,
key_data->x,
key_data->len ) );
/* Derive a key. */
PSA_ASSERT( psa_key_derivation( &generator, base_handle, alg,
salt->x, salt->len,
label->x, label->len,
capacity ) );
PSA_ASSERT( psa_allocate_key( derived_type, derived_bits,
&derived_handle ) );
psa_key_policy_set_usage( &policy, derived_usage, derived_alg );
PSA_ASSERT( psa_set_key_policy( derived_handle, &policy ) );
PSA_ASSERT( psa_generator_import_key( derived_handle,
derived_type,
derived_bits,
&generator ) );
/* Test the key information */
PSA_ASSERT( psa_get_key_information( derived_handle,
&got_type,
&got_bits ) );
TEST_EQUAL( got_type, derived_type );
TEST_EQUAL( got_bits, derived_bits );
/* Exercise the derived key. */
if( ! exercise_key( derived_handle, derived_usage, derived_alg ) )
goto exit;
exit:
psa_generator_abort( &generator );
psa_destroy_key( base_handle );
psa_destroy_key( derived_handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void derive_key_export( int alg_arg,
data_t *key_data,
data_t *salt,
data_t *label,
int bytes1_arg,
int bytes2_arg )
{
psa_key_handle_t base_handle = 0;
psa_key_handle_t derived_handle = 0;
psa_algorithm_t alg = alg_arg;
size_t bytes1 = bytes1_arg;
size_t derived_bits = PSA_BYTES_TO_BITS( bytes1 );
size_t bytes2 = bytes2_arg;
size_t capacity = bytes1 + bytes2;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
uint8_t *output_buffer = NULL;
uint8_t *export_buffer = NULL;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
size_t length;
ASSERT_ALLOC( output_buffer, capacity );
ASSERT_ALLOC( export_buffer, capacity );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_DERIVE,
PSA_BYTES_TO_BITS( key_data->len ),
&base_handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( base_handle, &policy ) );
PSA_ASSERT( psa_import_key( base_handle, PSA_KEY_TYPE_DERIVE,
key_data->x,
key_data->len ) );
/* Derive some material and output it. */
PSA_ASSERT( psa_key_derivation( &generator, base_handle, alg,
salt->x, salt->len,
label->x, label->len,
capacity ) );
PSA_ASSERT( psa_generator_read( &generator,
output_buffer,
capacity ) );
PSA_ASSERT( psa_generator_abort( &generator ) );
/* Derive the same output again, but this time store it in key objects. */
PSA_ASSERT( psa_key_derivation( &generator, base_handle, alg,
salt->x, salt->len,
label->x, label->len,
capacity ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_RAW_DATA, derived_bits,
&derived_handle ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_EXPORT, 0 );
PSA_ASSERT( psa_set_key_policy( derived_handle, &policy ) );
PSA_ASSERT( psa_generator_import_key( derived_handle,
PSA_KEY_TYPE_RAW_DATA,
derived_bits,
&generator ) );
PSA_ASSERT( psa_export_key( derived_handle,
export_buffer, bytes1,
&length ) );
TEST_EQUAL( length, bytes1 );
PSA_ASSERT( psa_destroy_key( derived_handle ) );
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_RAW_DATA,
PSA_BYTES_TO_BITS( bytes2 ),
&derived_handle ) );
PSA_ASSERT( psa_set_key_policy( derived_handle, &policy ) );
PSA_ASSERT( psa_generator_import_key( derived_handle,
PSA_KEY_TYPE_RAW_DATA,
PSA_BYTES_TO_BITS( bytes2 ),
&generator ) );
PSA_ASSERT( psa_export_key( derived_handle,
export_buffer + bytes1, bytes2,
&length ) );
TEST_EQUAL( length, bytes2 );
/* Compare the outputs from the two runs. */
ASSERT_COMPARE( output_buffer, bytes1 + bytes2,
export_buffer, capacity );
exit:
mbedtls_free( output_buffer );
mbedtls_free( export_buffer );
psa_generator_abort( &generator );
psa_destroy_key( base_handle );
psa_destroy_key( derived_handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_agreement_setup( int alg_arg,
int our_key_type_arg, data_t *our_key_data,
data_t *peer_key_data,
int expected_status_arg )
{
psa_key_handle_t our_key = 0;
psa_algorithm_t alg = alg_arg;
psa_key_type_t our_key_type = our_key_type_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( our_key_type,
KEY_BITS_FROM_DATA( our_key_type,
our_key_data ),
&our_key ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( our_key, &policy ) );
PSA_ASSERT( psa_import_key( our_key, our_key_type,
our_key_data->x,
our_key_data->len ) );
TEST_EQUAL( psa_key_agreement( &generator,
our_key,
peer_key_data->x, peer_key_data->len,
alg ),
expected_status_arg );
exit:
psa_generator_abort( &generator );
psa_destroy_key( our_key );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_agreement_capacity( int alg_arg,
int our_key_type_arg, data_t *our_key_data,
data_t *peer_key_data,
int expected_capacity_arg )
{
psa_key_handle_t our_key = 0;
psa_algorithm_t alg = alg_arg;
psa_key_type_t our_key_type = our_key_type_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
size_t actual_capacity;
unsigned char output[16];
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( our_key_type,
KEY_BITS_FROM_DATA( our_key_type,
our_key_data ),
&our_key ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( our_key, &policy ) );
PSA_ASSERT( psa_import_key( our_key, our_key_type,
our_key_data->x,
our_key_data->len ) );
PSA_ASSERT( psa_key_agreement( &generator,
our_key,
peer_key_data->x, peer_key_data->len,
alg ) );
/* Test the advertized capacity. */
PSA_ASSERT( psa_get_generator_capacity(
&generator, &actual_capacity ) );
TEST_EQUAL( actual_capacity, (size_t) expected_capacity_arg );
/* Test the actual capacity by reading the output. */
while( actual_capacity > sizeof( output ) )
{
PSA_ASSERT( psa_generator_read( &generator,
output, sizeof( output ) ) );
actual_capacity -= sizeof( output );
}
PSA_ASSERT( psa_generator_read( &generator,
output, actual_capacity ) );
TEST_EQUAL( psa_generator_read( &generator, output, 1 ),
PSA_ERROR_INSUFFICIENT_CAPACITY );
exit:
psa_generator_abort( &generator );
psa_destroy_key( our_key );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_agreement_output( int alg_arg,
int our_key_type_arg, data_t *our_key_data,
data_t *peer_key_data,
data_t *expected_output1, data_t *expected_output2 )
{
psa_key_handle_t our_key = 0;
psa_algorithm_t alg = alg_arg;
psa_key_type_t our_key_type = our_key_type_arg;
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
uint8_t *actual_output = NULL;
ASSERT_ALLOC( actual_output, MAX( expected_output1->len,
expected_output2->len ) );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( our_key_type,
KEY_BITS_FROM_DATA( our_key_type,
our_key_data ),
&our_key ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DERIVE, alg );
PSA_ASSERT( psa_set_key_policy( our_key, &policy ) );
PSA_ASSERT( psa_import_key( our_key, our_key_type,
our_key_data->x,
our_key_data->len ) );
PSA_ASSERT( psa_key_agreement( &generator,
our_key,
peer_key_data->x, peer_key_data->len,
alg ) );
PSA_ASSERT( psa_generator_read( &generator,
actual_output,
expected_output1->len ) );
ASSERT_COMPARE( actual_output, expected_output1->len,
expected_output1->x, expected_output1->len );
if( expected_output2->len != 0 )
{
PSA_ASSERT( psa_generator_read( &generator,
actual_output,
expected_output2->len ) );
ASSERT_COMPARE( actual_output, expected_output2->len,
expected_output2->x, expected_output2->len );
}
exit:
psa_generator_abort( &generator );
psa_destroy_key( our_key );
mbedtls_psa_crypto_free( );
mbedtls_free( actual_output );
}
/* END_CASE */
/* BEGIN_CASE */
void generate_random( int bytes_arg )
{
size_t bytes = bytes_arg;
const unsigned char trail[] = "don't overwrite me";
unsigned char *output = NULL;
unsigned char *changed = NULL;
size_t i;
unsigned run;
ASSERT_ALLOC( output, bytes + sizeof( trail ) );
ASSERT_ALLOC( changed, bytes );
memcpy( output + bytes, trail, sizeof( trail ) );
PSA_ASSERT( psa_crypto_init( ) );
/* Run several times, to ensure that every output byte will be
* nonzero at least once with overwhelming probability
* (2^(-8*number_of_runs)). */
for( run = 0; run < 10; run++ )
{
if( bytes != 0 )
memset( output, 0, bytes );
PSA_ASSERT( psa_generate_random( output, bytes ) );
/* Check that no more than bytes have been overwritten */
ASSERT_COMPARE( output + bytes, sizeof( trail ),
trail, sizeof( trail ) );
for( i = 0; i < bytes; i++ )
{
if( output[i] != 0 )
++changed[i];
}
}
/* Check that every byte was changed to nonzero at least once. This
* validates that psa_generate_random is overwriting every byte of
* the output buffer. */
for( i = 0; i < bytes; i++ )
{
TEST_ASSERT( changed[i] != 0 );
}
exit:
mbedtls_psa_crypto_free( );
mbedtls_free( output );
mbedtls_free( changed );
}
/* END_CASE */
/* BEGIN_CASE */
void generate_key( int type_arg,
int bits_arg,
int usage_arg,
int alg_arg,
int expected_status_arg )
{
psa_key_handle_t handle = 0;
psa_key_type_t type = type_arg;
psa_key_usage_t usage = usage_arg;
size_t bits = bits_arg;
psa_algorithm_t alg = alg_arg;
psa_status_t expected_status = expected_status_arg;
psa_key_type_t got_type;
size_t got_bits;
psa_status_t expected_info_status =
expected_status == PSA_SUCCESS ? PSA_SUCCESS : PSA_ERROR_EMPTY_SLOT;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_allocate_key( type, bits, &handle ) );
psa_key_policy_set_usage( &policy, usage, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
/* Generate a key */
TEST_EQUAL( psa_generate_key( handle, type, bits, NULL, 0 ),
expected_status );
/* Test the key information */
TEST_EQUAL( psa_get_key_information( handle, &got_type, &got_bits ),
expected_info_status );
if( expected_info_status != PSA_SUCCESS )
goto exit;
TEST_EQUAL( got_type, type );
TEST_EQUAL( got_bits, bits );
/* Do something with the key according to its type and permitted usage. */
if( ! exercise_key( handle, usage, alg ) )
goto exit;
exit:
psa_destroy_key( handle );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void persistent_key_load_key_from_storage( data_t *data, int type_arg,
int bits, int usage_arg,
int alg_arg, int generation_method,
int export_status )
{
psa_key_handle_t handle = 0;
psa_key_handle_t base_key;
psa_key_type_t type = (psa_key_type_t) type_arg;
psa_key_type_t type_get;
size_t bits_get;
psa_key_policy_t policy_set = PSA_KEY_POLICY_INIT;
psa_key_policy_t policy_get = PSA_KEY_POLICY_INIT;
psa_key_usage_t policy_usage = (psa_key_usage_t) usage_arg;
psa_algorithm_t policy_alg = (psa_algorithm_t) alg_arg;
psa_key_policy_t base_policy_set = PSA_KEY_POLICY_INIT;
psa_algorithm_t base_policy_alg = PSA_ALG_HKDF(PSA_ALG_SHA_256);
psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
unsigned char *first_export = NULL;
unsigned char *second_export = NULL;
size_t export_size = PSA_KEY_EXPORT_MAX_SIZE( type, bits );
size_t first_exported_length;
size_t second_exported_length;
ASSERT_ALLOC( first_export, export_size );
ASSERT_ALLOC( second_export, export_size );
PSA_ASSERT( psa_crypto_init() );
PSA_ASSERT( psa_create_key( PSA_KEY_LIFETIME_PERSISTENT, 1,
type, bits,
&handle ) );
psa_key_policy_set_usage( &policy_set, policy_usage,
policy_alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy_set ) );
switch( generation_method )
{
case IMPORT_KEY:
/* Import the key */
PSA_ASSERT( psa_import_key( handle, type,
data->x, data->len ) );
break;
case GENERATE_KEY:
/* Generate a key */
PSA_ASSERT( psa_generate_key( handle, type, bits,
NULL, 0 ) );
break;
case DERIVE_KEY:
/* Create base key */
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_DERIVE,
PSA_BYTES_TO_BITS( data->len ),
&base_key ) );
psa_key_policy_set_usage( &base_policy_set, PSA_KEY_USAGE_DERIVE,
base_policy_alg );
PSA_ASSERT( psa_set_key_policy(
base_key, &base_policy_set ) );
PSA_ASSERT( psa_import_key( base_key, PSA_KEY_TYPE_DERIVE,
data->x, data->len ) );
/* Derive a key. */
PSA_ASSERT( psa_key_derivation( &generator, base_key,
base_policy_alg,
NULL, 0, NULL, 0,
export_size ) );
PSA_ASSERT( psa_generator_import_key(
handle, PSA_KEY_TYPE_RAW_DATA,
bits, &generator ) );
break;
}
/* Export the key */
TEST_EQUAL( psa_export_key( handle,
first_export, export_size,
&first_exported_length ),
export_status );
/* Shutdown and restart */
mbedtls_psa_crypto_free();
PSA_ASSERT( psa_crypto_init() );
/* Check key slot still contains key data */
PSA_ASSERT( psa_open_key( PSA_KEY_LIFETIME_PERSISTENT, 1,
&handle ) );
PSA_ASSERT( psa_get_key_information(
handle, &type_get, &bits_get ) );
TEST_EQUAL( type_get, type );
TEST_EQUAL( bits_get, (size_t) bits );
PSA_ASSERT( psa_get_key_policy( handle, &policy_get ) );
TEST_EQUAL( psa_key_policy_get_usage( &policy_get ), policy_usage );
TEST_EQUAL( psa_key_policy_get_algorithm( &policy_get ), policy_alg );
/* Export the key again */
TEST_EQUAL( psa_export_key( handle,
second_export, export_size,
&second_exported_length ),
export_status );
if( export_status == PSA_SUCCESS )
{
ASSERT_COMPARE( first_export, first_exported_length,
second_export, second_exported_length );
switch( generation_method )
{
case IMPORT_KEY:
ASSERT_COMPARE( data->x, data->len,
first_export, first_exported_length );
break;
default:
break;
}
}
/* Do something with the key according to its type and permitted usage. */
if( ! exercise_key( handle, policy_usage, policy_alg ) )
goto exit;
exit:
mbedtls_free( first_export );
mbedtls_free( second_export );
psa_destroy_key( handle );
mbedtls_psa_crypto_free();
}
/* END_CASE */
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