1 /* $OpenBSD: hash.c,v 1.3 2013/12/09 11:03:45 markus Exp $ */ 2 3 /* Copied from nacl-20110221/crypto_hash/sha512/ref/hash.c */ 4 5 /* 6 20080913 7 D. J. Bernstein 8 Public domain. 9 */ 10 11 #include "includes.h" 12 13 #include "crypto_api.h" 14 15 #define blocks crypto_hashblocks_sha512 16 17 static const unsigned char iv[64] = { 18 0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08, 19 0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b, 20 0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b, 21 0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1, 22 0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1, 23 0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f, 24 0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b, 25 0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79 26 } ; 27 28 typedef unsigned long long uint64; 29 30 int crypto_hash_sha512(unsigned char *out,const unsigned char *in,unsigned long long inlen) 31 { 32 unsigned char h[64]; 33 unsigned char padded[256]; 34 unsigned int i; 35 unsigned long long bytes = inlen; 36 37 for (i = 0;i < 64;++i) h[i] = iv[i]; 38 39 blocks(h,in,inlen); 40 in += inlen; 41 inlen &= 127; 42 in -= inlen; 43 44 for (i = 0;i < inlen;++i) padded[i] = in[i]; 45 padded[inlen] = 0x80; 46 47 if (inlen < 112) { 48 for (i = inlen + 1;i < 119;++i) padded[i] = 0; 49 padded[119] = bytes >> 61; 50 padded[120] = bytes >> 53; 51 padded[121] = bytes >> 45; 52 padded[122] = bytes >> 37; 53 padded[123] = bytes >> 29; 54 padded[124] = bytes >> 21; 55 padded[125] = bytes >> 13; 56 padded[126] = bytes >> 5; 57 padded[127] = bytes << 3; 58 blocks(h,padded,128); 59 } else { 60 for (i = inlen + 1;i < 247;++i) padded[i] = 0; 61 padded[247] = bytes >> 61; 62 padded[248] = bytes >> 53; 63 padded[249] = bytes >> 45; 64 padded[250] = bytes >> 37; 65 padded[251] = bytes >> 29; 66 padded[252] = bytes >> 21; 67 padded[253] = bytes >> 13; 68 padded[254] = bytes >> 5; 69 padded[255] = bytes << 3; 70 blocks(h,padded,256); 71 } 72 73 for (i = 0;i < 64;++i) out[i] = h[i]; 74 75 return 0; 76 } 77