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psa_asymmetric_decrypt: access the key store and call driver dispatch

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Signed-off-by: Przemyslaw Stekiel <przemyslaw.stekiel@mobica.com>
This commit is contained in:
Przemyslaw Stekiel 2021-12-13 08:58:19 +01:00
parent 234f318bd7
commit 8d45c00759
1 changed files with 7 additions and 85 deletions
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92
library/psa_crypto.c
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@ -3025,18 +3025,6 @@ psa_status_t psa_verify_hash( mbedtls_svc_key_id_t key,
signature, signature_length );
}
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
static int psa_rsa_oaep_set_padding_mode( psa_algorithm_t alg,
mbedtls_rsa_context *rsa )
{
psa_algorithm_t hash_alg = PSA_ALG_RSA_OAEP_GET_HASH( alg );
const mbedtls_md_info_t *md_info = mbedtls_md_info_from_psa( hash_alg );
mbedtls_md_type_t md_alg = mbedtls_md_get_type( md_info );
return( mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V21, md_alg ) );
}
#endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
psa_status_t psa_asymmetric_encrypt( mbedtls_svc_key_id_t key,
psa_algorithm_t alg,
const uint8_t *input,
@ -3122,80 +3110,14 @@ psa_status_t psa_asymmetric_decrypt( mbedtls_svc_key_id_t key,
goto exit;
}
if( slot->attr.type == PSA_KEY_TYPE_RSA_KEY_PAIR )
{
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
mbedtls_rsa_context *rsa = NULL;
status = mbedtls_psa_rsa_load_representation( slot->attr.type,
slot->key.data,
slot->key.bytes,
&rsa );
if( status != PSA_SUCCESS )
goto exit;
psa_key_attributes_t attributes = {
.core = slot->attr
};
if( input_length != mbedtls_rsa_get_len( rsa ) )
{
status = PSA_ERROR_INVALID_ARGUMENT;
goto rsa_exit;
}
#endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
if( alg == PSA_ALG_RSA_PKCS1V15_CRYPT )
{
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT)
status = mbedtls_to_psa_error(
mbedtls_rsa_pkcs1_decrypt( rsa,
mbedtls_psa_get_random,
MBEDTLS_PSA_RANDOM_STATE,
output_length,
input,
output,
output_size ) );
#else
status = PSA_ERROR_NOT_SUPPORTED;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT */
}
else
if( PSA_ALG_IS_RSA_OAEP( alg ) )
{
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
status = mbedtls_to_psa_error(
psa_rsa_oaep_set_padding_mode( alg, rsa ) );
if( status != PSA_SUCCESS )
goto rsa_exit;
status = mbedtls_to_psa_error(
mbedtls_rsa_rsaes_oaep_decrypt( rsa,
mbedtls_psa_get_random,
MBEDTLS_PSA_RANDOM_STATE,
salt, salt_length,
output_length,
input,
output,
output_size ) );
#else
status = PSA_ERROR_NOT_SUPPORTED;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP */
}
else
{
status = PSA_ERROR_INVALID_ARGUMENT;
}
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
rsa_exit:
mbedtls_rsa_free( rsa );
mbedtls_free( rsa );
#endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
}
else
{
status = PSA_ERROR_NOT_SUPPORTED;
}
status = psa_driver_wrapper_asymmetric_decrypt(
&attributes, slot->key.data, slot->key.bytes,
alg, input, input_length, salt, salt_length,
output, output_size, output_length );
exit:
unlock_status = psa_unlock_key_slot( slot );