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Changed: Merge changes from next patch
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@ -105,4 +105,7 @@ CHashKey getSHA1(const std::string &filename, bool forcePath = false);
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// This function get a buffer with size and returns his SHA hash key
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CHashKey getSHA1(const uint8 *buffer, uint32 size);
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// This function get a buffer and key with size and returns his HMAC-SHA1 hash key
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CHashKey getHMacSHA1(const uint8 *text, uint32 text_len, const uint8 *key, uint32 key_len);
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#endif // NL_SHA1_H
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@ -187,6 +187,77 @@ CHashKey getSHA1(const string &filename, bool forcePath)
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return hk;
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}
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/*
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*
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* HMAC = hash( (Key ^ 0x5c) .. hash( (Key ^0x36) .. Message ) )
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*
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*/
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CHashKey getHMacSHA1(const uint8 *text, uint32 text_len, const uint8 *key, uint32 key_len)
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{
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SHA1Context sha;
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uint8_t SHA1_Key[64];
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uint8_t SHA1_Key1[20];
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uint8_t SHA1_Key2[20];
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string buffer1;
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string buffer2;
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// Init some vars
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for (uint i = 0; i < 64; i++)
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SHA1_Key[i] = 0;
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// If lenght of key > 64 use sha1 hash
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if (key_len > 64) {
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uint8_t SHA1_Key0[20];
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SHA1Reset(&sha);
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SHA1Input(&sha, (const uint8_t*)key, key_len);
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SHA1Result(&sha, SHA1_Key0);
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CHashKey hk0 (SHA1_Key0);
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for (uint i = 0; i < 20; i++)
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SHA1_Key[i] = hk0.HashKeyString[i];
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} else {
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for (uint i = 0; i < key_len; i++)
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SHA1_Key[i] = key[i];
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}
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// Do 0x36 XOR Key
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for (uint i = 0; i < 64; i++)
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buffer1 += 0x36 ^ SHA1_Key[i];
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// Append text
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for (uint i = 0; i < text_len; i++)
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buffer1 += text[i];
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// Get hash
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SHA1Reset(&sha);
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SHA1Input(&sha, (const uint8_t*)buffer1.c_str(), buffer1.size());
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SHA1Result(&sha, SHA1_Key1);
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CHashKey hk1 (SHA1_Key1);
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// Do 0x5c XOR Key
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for (uint i = 0; i < 64; i++)
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buffer2 += 0x5c ^ SHA1_Key[i];
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// Append previous hash
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for (uint i = 0; i < 20; i++)
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buffer2 += hk1.HashKeyString[i];
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// Get new hash
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SHA1Reset(&sha);
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SHA1Input(&sha, (const uint8_t*)buffer2.c_str(), buffer2.size());
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SHA1Result(&sha, SHA1_Key2);
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CHashKey hk (SHA1_Key2);
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return hk;
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}
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#ifdef _MFC_VER
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#pragma runtime_checks( "", off )
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#endif
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/*
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* Define the SHA1 circular left shift macro
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*/
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