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Adapt test in test_suite_pk to work with new PSA public key format

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This commit is contained in:
Hanno Becker 2019-02-01 11:48:19 +00:00
parent 9acfd730ed
commit 00114d71f4
1 changed files with 39 additions and 18 deletions
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57
tests/suites/test_suite_pk.function
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@ -778,44 +778,65 @@ exit:
void pk_psa_sign( )
{
mbedtls_pk_context pk;
psa_key_handle_t key;
unsigned char hash[50], sig[100], pkey[100];
size_t sig_len, klen = 0;
unsigned char hash[50], sig[100], pkey_legacy[100], pkey_psa[100];
unsigned char *pkey_legacy_start, *pkey_psa_start;
size_t sig_len, klen_legacy, klen_psa;
int ret;
psa_key_handle_t handle;
/*
* This tests making signatures with a wrapped PSA key:
* - generate a fresh PSA key
* - generate a fresh ECP legacy PK context
* - wrap it in a PK context and make a signature this way
* - extract the public key
* - parse it to a PK context and verify the signature this way
*/
/* Create legacy EC public/private key in PK context. */
mbedtls_pk_init( &pk );
TEST_ASSERT( mbedtls_pk_setup( &pk,
mbedtls_pk_info_from_type( MBEDTLS_PK_ECKEY ) ) == 0 );
TEST_ASSERT( mbedtls_ecp_gen_key( MBEDTLS_ECP_DP_SECP256R1,
(mbedtls_ecp_keypair*) pk.pk_ctx,
rnd_std_rand, NULL ) == 0 );
/* Export underlying public key for re-importing in a legacy context. */
ret = mbedtls_pk_write_pubkey_der( &pk, pkey_legacy,
sizeof( pkey_legacy ) );
TEST_ASSERT( ret >= 0 );
klen_legacy = (size_t) ret;
/* mbedtls_pk_write_pubkey_der() writes backwards in the data buffer. */
pkey_legacy_start = pkey_legacy + sizeof( pkey_legacy ) - klen_legacy;
/* Turn PK context into an opaque one. */
TEST_ASSERT( psa_allocate_key( &handle ) == PSA_SUCCESS );
TEST_ASSERT( mbedtls_pk_wrap_as_opaque( &pk, &handle,
PSA_ALG_SHA_256 ) == 0 );
memset( hash, 0x2a, sizeof hash );
memset( sig, 0, sizeof sig );
memset( pkey, 0, sizeof pkey );
key = pk_psa_genkey();
TEST_ASSERT( key != 0 );
TEST_ASSERT( mbedtls_pk_setup_opaque( &pk, key ) == 0 );
TEST_ASSERT( mbedtls_pk_sign( &pk, MBEDTLS_MD_SHA256,
hash, sizeof hash, sig, &sig_len,
NULL, NULL ) == 0 );
mbedtls_pk_free( &pk );
/* Export underlying public key for re-importing in a psa context. */
ret = mbedtls_pk_write_pubkey_der( &pk, pkey_psa,
sizeof( pkey_psa ) );
TEST_ASSERT( ret >= 0 );
klen_psa = (size_t) ret;
/* mbedtls_pk_write_pubkey_der() writes backwards in the data buffer. */
pkey_psa_start = pkey_psa + sizeof( pkey_psa ) - klen_psa;
TEST_ASSERT( PSA_SUCCESS == psa_export_public_key(
key, pkey, sizeof( pkey ), &klen ) );
TEST_ASSERT( PSA_SUCCESS == psa_destroy_key( key ) );
TEST_ASSERT( klen_psa == klen_legacy );
TEST_ASSERT( memcmp( pkey_psa_start, pkey_legacy_start, klen_psa ) == 0 );
mbedtls_pk_free( &pk );
TEST_ASSERT( PSA_SUCCESS == psa_destroy_key( handle ) );
mbedtls_pk_init( &pk );
TEST_ASSERT( mbedtls_pk_parse_public_key( &pk, pkey, klen ) == 0 );
TEST_ASSERT( mbedtls_pk_parse_public_key( &pk, pkey_legacy_start,
klen_legacy ) == 0 );
TEST_ASSERT( mbedtls_pk_verify( &pk, MBEDTLS_MD_SHA256,
hash, sizeof hash, sig, sig_len ) == 0 );