LCOV - code coverage report
Current view: top level - src/crypto - hmac_sha256.cpp (source / functions) Hit Total Coverage
Test: total_coverage.info Lines: 19 19 100.0 %
Date: 2025-02-23 09:33:43 Functions: 2 2 100.0 %

          Line data    Source code
       1             : // Copyright (c) 2014 The Bitcoin developers
       2             : // Distributed under the MIT software license, see the accompanying
       3             : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4             : 
       5             : #include "crypto/hmac_sha256.h"
       6             : 
       7             : #include <string.h>
       8             : 
       9          41 : CHMAC_SHA256::CHMAC_SHA256(const unsigned char* key, size_t keylen)
      10             : {
      11          41 :     unsigned char rkey[64];
      12          41 :     if (keylen <= 64) {
      13          38 :         memcpy(rkey, key, keylen);
      14          38 :         memset(rkey + keylen, 0, 64 - keylen);
      15             :     } else {
      16           3 :         CSHA256().Write(key, keylen).Finalize(rkey);
      17           3 :         memset(rkey + 32, 0, 32);
      18             :     }
      19             : 
      20        2665 :     for (int n = 0; n < 64; n++)
      21        2624 :         rkey[n] ^= 0x5c;
      22          41 :     outer.Write(rkey, 64);
      23             : 
      24        2665 :     for (int n = 0; n < 64; n++)
      25        2624 :         rkey[n] ^= 0x5c ^ 0x36;
      26          41 :     inner.Write(rkey, 64);
      27          41 : }
      28             : 
      29        4009 : void CHMAC_SHA256::Finalize(unsigned char hash[OUTPUT_SIZE])
      30             : {
      31        4009 :     unsigned char temp[32];
      32        4009 :     inner.Finalize(temp);
      33        4009 :     outer.Write(temp, 32).Finalize(hash);
      34        4009 : }

Generated by: LCOV version 1.14