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mbedtls/tests/suites/test_suite_psa_crypto.function
Jaeden Amero 5bae227da0 psa: Add initializers for cipher operation objects 
Add new initializers for cipher operation objects and use them in our
tests and library code. Prefer using the macro initializers due to their
straightforwardness.
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 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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