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Changed: Merge changes from next patch

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kervala 2011-05-26 14:14:29 +02:00
parent c1691be14b
commit 6f78067a8d
2 changed files with 74 additions and 0 deletions
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3
code/nel/include/nel/misc/sha1.h
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@ -105,4 +105,7 @@ CHashKey getSHA1(const std::string &filename, bool forcePath = false);
// This function get a buffer with size and returns his SHA hash key // This function get a buffer with size and returns his SHA hash key
CHashKey getSHA1(const uint8 *buffer, uint32 size); CHashKey getSHA1(const uint8 *buffer, uint32 size);
// This function get a buffer and key with size and returns his HMAC-SHA1 hash key
CHashKey getHMacSHA1(const uint8 *text, uint32 text_len, const uint8 *key, uint32 key_len);
#endif // NL_SHA1_H #endif // NL_SHA1_H

71
code/nel/src/misc/sha1.cpp
View file

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