diff options
Diffstat (limited to 'sha1/sha512.c')
| -rw-r--r-- | sha1/sha512.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/sha1/sha512.c b/sha1/sha512.c new file mode 100644 index 0000000..73a2231 --- /dev/null +++ b/sha1/sha512.c @@ -0,0 +1,232 @@ +/* +** Copyright 2008 Double Precision, Inc. +** See COPYING for distribution information. +*/ + +#define SHA1_INTERNAL +#include "sha1.h" + +#include <string.h> +#include <stdlib.h> + + +#define ROTR(x,n) ((SHA512_WORD)(((SHA512_WORD)(x) >> (n))|((x) << (64-(n))))) + +#define ROTL(x,n) ((SHA512_WORD)(((SHA512_WORD)(x) << (n))|((x) >> (64-(n))))) + + +#define CH(x,y,z) ((SHA512_WORD)(((x) & (y)) ^ ((~(x))&(z)))) +#define MAJ(x,y,z) ((SHA512_WORD)(((x)&(y))^((x)&(z))^((y)&(z)))) + +#define SUM0(x) ((SHA512_WORD)(ROTR((x),28)^ROTR((x),34)^ROTR((x),39))) +#define SUM1(x) ((SHA512_WORD)(ROTR((x),14)^ROTR((x),18)^ROTR((x),41))) + +#define TH0(x) ((SHA512_WORD)(ROTR((x),1)^ROTR((x),8)^((SHA512_WORD)(x)>>7))) +#define TH1(x) ((SHA512_WORD)(ROTR((x),19)^ROTR((x),61)^((SHA512_WORD)(x)>>6))) + +static const SHA512_WORD K[80]={ + 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, + 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, + 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, + 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, + 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, + 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, + 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, + 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, + 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, + 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, + 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, + 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, + 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, + 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, + 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, + 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, + 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, + 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, + 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, + 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL}; + +void sha512_context_init(struct SHA512_CONTEXT *c) +{ + if (sizeof(SHA512_WORD) != 8) + abort(); + + c->H[0] = 0x6a09e667f3bcc908ULL; + c->H[1] = 0xbb67ae8584caa73bULL; + c->H[2] = 0x3c6ef372fe94f82bULL; + c->H[3] = 0xa54ff53a5f1d36f1ULL; + c->H[4] = 0x510e527fade682d1ULL; + c->H[5] = 0x9b05688c2b3e6c1fULL; + c->H[6] = 0x1f83d9abfb41bd6bULL; + c->H[7] = 0x5be0cd19137e2179ULL; + + c->blk_ptr=0; +} + +void sha512_context_hash(struct SHA512_CONTEXT *cc, + const unsigned char blk[SHA512_BLOCK_SIZE]) +{ + SHA512_WORD W[80]; + unsigned i, t; + SHA512_WORD a,b,c,d,e,f,g,h; + + for (i=t=0; t<16; t++) + { + SHA512_WORD x=blk[i]; i++; + + x=(x << 8) | blk[i]; i++; + x=(x << 8) | blk[i]; i++; + x=(x << 8) | blk[i]; i++; + x=(x << 8) | blk[i]; i++; + x=(x << 8) | blk[i]; i++; + x=(x << 8) | blk[i]; i++; + W[t]=(x << 8) | blk[i]; i++; + } + + for (t=16; t<80; t++) + W[t]= TH1(W[t-2]) + W[t-7] + TH0(W[t-15]) + W[t-16]; + + a=cc->H[0]; + b=cc->H[1]; + c=cc->H[2]; + d=cc->H[3]; + e=cc->H[4]; + f=cc->H[5]; + g=cc->H[6]; + h=cc->H[7]; + + for (t=0; t<80; t++) + { + SHA512_WORD T1=h + SUM1(e) + CH(e,f,g) + K[t] + W[t]; + SHA512_WORD T2=SUM0(a)+MAJ(a,b,c); + h=g; + g=f; + f=e; + e=d+T1; + d=c; + c=b; + b=a; + a=T1+T2; + } + + cc->H[0] += a; + cc->H[1] += b; + cc->H[2] += c; + cc->H[3] += d; + cc->H[4] += e; + cc->H[5] += f; + cc->H[6] += g; + cc->H[7] += h; +} + +void sha512_context_hashstream(struct SHA512_CONTEXT *c, const void *p, unsigned l) +{ + const unsigned char *cp=(const unsigned char *)p; + unsigned ll; + + while (l) + { + if (c->blk_ptr == 0 && l >= SHA512_BLOCK_SIZE) + { + sha512_context_hash(c, cp); + cp += SHA512_BLOCK_SIZE; + l -= SHA512_BLOCK_SIZE; + continue; + } + + ll=l; + if (ll > SHA512_BLOCK_SIZE - c->blk_ptr) + ll=SHA512_BLOCK_SIZE - c->blk_ptr; + memcpy(c->blk + c->blk_ptr, cp, ll); + c->blk_ptr += ll; + cp += ll; + l -= ll; + if (c->blk_ptr >= SHA512_BLOCK_SIZE) + { + sha512_context_hash(c, c->blk); + c->blk_ptr=0; + } + } +} + +void sha512_context_endstream(struct SHA512_CONTEXT *c, SHA512_WORD l) +{ + unsigned char buf[16]; + size_t i; + static const unsigned char zero[SHA512_BLOCK_SIZE-8]; + + buf[0]=0x80; + sha512_context_hashstream(c, &buf, 1); + while (c->blk_ptr != SHA512_BLOCK_SIZE-16) + { + if (c->blk_ptr > SHA512_BLOCK_SIZE-16) + { + sha512_context_hashstream(c, zero, + SHA512_BLOCK_SIZE - c->blk_ptr); + continue; + } + sha512_context_hashstream(c, zero, + SHA512_BLOCK_SIZE-16-c->blk_ptr); + } + + l *= 8; + + for (i=0; i<16; i++) + { + buf[15-i]=l; + l >>= 8; + } + + sha512_context_hashstream(c, buf, sizeof(buf)); +} + +void sha512_context_digest(struct SHA512_CONTEXT *c, SHA512_DIGEST d) +{ + unsigned char *dp=d + SHA512_DIGEST_SIZE; + unsigned i; + + for ( i=8; i; ) + { + SHA512_WORD w=c->H[--i]; + + *--dp=w; w >>= 8; + *--dp=w; w >>= 8; + *--dp=w; w >>= 8; + *--dp=w; w >>= 8; + *--dp=w; w >>= 8; + *--dp=w; w >>= 8; + *--dp=w; w >>= 8; + *--dp=w; + } +} + +void sha512_context_restore(struct SHA512_CONTEXT *c, const SHA512_DIGEST d) +{ + const unsigned char *dp=d; + unsigned i; + + for (i=0; i<8; i++) + { + SHA512_WORD w= *dp++; + + w=(w << 8) | *dp++; + w=(w << 8) | *dp++; + w=(w << 8) | *dp++; + w=(w << 8) | *dp++; + w=(w << 8) | *dp++; + w=(w << 8) | *dp++; + w=(w << 8) | *dp++; + c->H[i]=w; + } + c->blk_ptr=0; +} + +void sha512_digest(const void *msg, unsigned len, SHA512_DIGEST d) +{ + struct SHA512_CONTEXT c; + + sha512_context_init( &c ); + sha512_context_hashstream(&c, msg, len); + sha512_context_endstream(&c, len); + sha512_context_digest( &c, d ); +} |