3 inline uint32_t ROTL32 ( uint32_t x, int8_t r )
5 return (x << r) | (x >> (32 - r));
8 unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char>& vDataToHash)
10 // The following is MurmurHash3 (x86_32), see http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp
11 uint32_t h1 = nHashSeed;
12 const uint32_t c1 = 0xcc9e2d51;
13 const uint32_t c2 = 0x1b873593;
15 const int nblocks = vDataToHash.size() / 4;
19 const uint32_t * blocks = (const uint32_t *)(&vDataToHash[0] + nblocks*4);
21 for(int i = -nblocks; i; i++)
23 uint32_t k1 = blocks[i];
36 const uint8_t * tail = (const uint8_t*)(&vDataToHash[0] + nblocks*4);
40 switch(vDataToHash.size() & 3)
42 case 3: k1 ^= tail[2] << 16;
43 case 2: k1 ^= tail[1] << 8;
44 case 1: k1 ^= tail[0];
45 k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
50 h1 ^= vDataToHash.size();
60 int HMAC_SHA512_Init(HMAC_SHA512_CTX *pctx, const void *pkey, size_t len)
62 unsigned char key[128];
65 memcpy(key, pkey, len);
66 memset(key + len, 0, 128-len);
72 SHA512_Update(&ctxKey, pkey, len);
73 SHA512_Final(key, &ctxKey);
74 memset(key + 64, 0, 64);
77 for (int n=0; n<128; n++)
79 SHA512_Init(&pctx->ctxOuter);
80 SHA512_Update(&pctx->ctxOuter, key, 128);
82 for (int n=0; n<128; n++)
83 key[n] ^= 0x5c ^ 0x36;
84 SHA512_Init(&pctx->ctxInner);
85 return SHA512_Update(&pctx->ctxInner, key, 128);
88 int HMAC_SHA512_Update(HMAC_SHA512_CTX *pctx, const void *pdata, size_t len)
90 return SHA512_Update(&pctx->ctxInner, pdata, len);
93 int HMAC_SHA512_Final(unsigned char *pmd, HMAC_SHA512_CTX *pctx)
95 unsigned char buf[64];
96 SHA512_Final(buf, &pctx->ctxInner);
97 SHA512_Update(&pctx->ctxOuter, buf, 64);
98 return SHA512_Final(pmd, &pctx->ctxOuter);