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pk_wrap: destroy key slot on errors with policy or key importing

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This commit is contained in:
Andrzej Kurek 2018-11-08 04:33:06 -05:00
parent c097b0fded
commit 2f69b1a059
1 changed files with 7 additions and 7 deletions
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14
library/pk_wrap.c
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@ -591,7 +591,7 @@ static int extract_ecdsa_sig( unsigned char **p, const unsigned char *end,
// Check if both parts are of the same size // Check if both parts are of the same size
if( len_partial != len_signature ) if( len_partial != len_signature )
return( MBEDTLS_ERR_X509_INVALID_SIGNATURE ); return( MBEDTLS_ERR_X509_INVALID_SIGNATURE );
memcpy( sig->p + len_partial, *p, len_partial ); memcpy( sig->p + len_partial, *p, len_partial );
len_signature += len_partial; len_signature += len_partial;
@ -696,15 +696,16 @@ static int ecdsa_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
key_len = mbedtls_pk_write_pubkey_der( &key, buf, buf_len ); key_len = mbedtls_pk_write_pubkey_der( &key, buf, buf_len );
if( key_len <= 0 ) if( key_len <= 0 )
{ {
ret = MBEDTLS_ERR_PK_BAD_INPUT_DATA; mbedtls_free( signature.p );
goto cleanup; return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
} }
if( mbedtls_psa_get_free_key_slot( &key_slot ) != PSA_SUCCESS ) if( mbedtls_psa_get_free_key_slot( &key_slot ) != PSA_SUCCESS )
{ {
ret = MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE; mbedtls_free( signature.p );
goto cleanup; return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
} }
psa_key_policy_init( &policy ); psa_key_policy_init( &policy );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, psa_sig_md ); psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, psa_sig_md );
if( psa_set_key_policy( key_slot, &policy ) != PSA_SUCCESS ) if( psa_set_key_policy( key_slot, &policy ) != PSA_SUCCESS )
@ -725,14 +726,13 @@ static int ecdsa_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
signature.p, signature.len ) signature.p, signature.len )
!= PSA_SUCCESS ) != PSA_SUCCESS )
{ {
psa_destroy_key( key_slot );
ret = MBEDTLS_ERR_ECP_VERIFY_FAILED; ret = MBEDTLS_ERR_ECP_VERIFY_FAILED;
goto cleanup; goto cleanup;
} }
ret = 0; ret = 0;
psa_destroy_key( key_slot );
cleanup: cleanup:
psa_destroy_key( key_slot );
mbedtls_free( signature.p ); mbedtls_free( signature.p );
return( ret ); return( ret );
} }