Add scenario to test case hash_bad_paths
Tests where the verification hash digest is prefixed with
the expected digest but also has extra bytes appended at the end of it.
@@ -1577,6 +1577,15 @@ void hash_bad_paths( )
psa_hash_operation_t operation;
size_t hash_len;
+ /* SHA-256 hash digest of the string 'input' with 2 extra bytes appended at
+ * the end */
+ unsigned char extra_length_digest[] =
+ {
+ 0x3a, 0x28, 0x92, 0x32, 0x39, 0x9a, 0x20, 0x75, 0x09, 0xf4, 0xfa, 0x9d,
+ 0x70, 0xfa, 0x6f, 0x68, 0x81, 0x7c, 0xe6, 0xa6, 0x6f, 0x21, 0x50, 0xff,
+ 0x08, 0x23, 0x36, 0x31, 0x1f, 0x4e, 0x55, 0xfe, 0xaa, 0xbb
+ };
+
TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
/* psa_hash_update without calling psa_hash_setup beforehand */
@@ -1618,6 +1627,18 @@ void hash_bad_paths( )
hash, expected_size ) ==
PSA_ERROR_INVALID_SIGNATURE );
+ /* psa_hash_verify with a hash digest longer than expected, where the first
+ * 32 bytes match the expected digest but 2 extra bytes are appended at the
+ * end of the digest */
+ memset( hash, 0, sizeof( hash ) );
+ TEST_ASSERT( psa_hash_setup( &operation, alg ) == PSA_SUCCESS );
+ TEST_ASSERT( psa_hash_update( &operation,
+ input, sizeof( input ) ) == PSA_SUCCESS );
+ TEST_ASSERT( psa_hash_verify( &operation,
+ extra_length_digest,
+ sizeof( extra_length_digest ) ) ==
+ PSA_ERROR_INVALID_SIGNATURE );
+
exit:
mbedtls_psa_crypto_free( );
}
