Use mbedtls_xor in PKCS Mbed-TLS#5

Signed-off-by: Dave Rodgman <[email protected]>
daverodgman · Nov 22, 2022 · 74b345f · 74b345f
1 parent 99a507e
commit 74b345f
Showing 1 changed file with 2 additions and 5 deletions.
diff --git a/library/pkcs5.c b/library/pkcs5.c
@@ -211,7 +211,6 @@ static int pkcs5_pbkdf2_hmac( mbedtls_md_context_t *ctx,
                               uint32_t key_length, unsigned char *output )
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    int j;
     unsigned int i;
     unsigned char md1[MBEDTLS_MD_MAX_SIZE];
     unsigned char work[MBEDTLS_MD_MAX_SIZE];
@@ -263,8 +262,7 @@ static int pkcs5_pbkdf2_hmac( mbedtls_md_context_t *ctx,
 
             // U1 xor U2
             //
-            for( j = 0; j < md_size; j++ )
-                work[j] ^= md1[j];
+            mbedtls_xor( work, work, md1, md_size );
         }
 
         use_len = ( key_length < md_size ) ? key_length : md_size;
@@ -396,8 +394,7 @@ int mbedtls_pkcs5_pbkdf2_hmac_ext( mbedtls_md_type_t md_alg,
 
             // U1 xor U2
             //
-            for( j = 0; j < md_size; j++ )
-                work[j] ^= md1[j];
+            mbedtls_xor( work, work, md1, md_size );
         }
 
         use_len = ( key_length < md_size ) ? key_length : md_size;