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courier  0.68.2
Defines | Functions | Variables
sha512.c File Reference
#include "sha1.h"
#include <string.h>
#include <stdlib.h>

Go to the source code of this file.

Defines

#define SHA1_INTERNAL
#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)))

Functions

void sha512_context_init (struct SHA512_CONTEXT *c)
void sha512_context_hash (struct SHA512_CONTEXT *cc, const unsigned char blk[SHA512_BLOCK_SIZE])
void sha512_context_hashstream (struct SHA512_CONTEXT *c, const void *p, unsigned l)
void sha512_context_endstream (struct SHA512_CONTEXT *c, SHA512_WORD l)
void sha512_context_digest (struct SHA512_CONTEXT *c, SHA512_DIGEST d)
void sha512_context_restore (struct SHA512_CONTEXT *c, const SHA512_DIGEST d)
void sha512_digest (const void *msg, unsigned len, SHA512_DIGEST d)

Variables

static const SHA512_WORD K [80]

Define Documentation

#define CH (   x,
  y,
 
)    ((SHA512_WORD)(((x) & (y)) ^ ((~(x))&(z))))

Definition at line 18 of file sha512.c.

#define MAJ (   x,
  y,
 
)    ((SHA512_WORD)(((x)&(y))^((x)&(z))^((y)&(z))))

Definition at line 19 of file sha512.c.

#define ROTL (   x,
  n 
)    ((SHA512_WORD)(((SHA512_WORD)(x) << (n))|((x) >> (64-(n)))))

Definition at line 15 of file sha512.c.

#define ROTR (   x,
  n 
)    ((SHA512_WORD)(((SHA512_WORD)(x) >> (n))|((x) << (64-(n)))))

Definition at line 13 of file sha512.c.

#define SHA1_INTERNAL

Definition at line 6 of file sha512.c.

#define SUM0 (   x)    ((SHA512_WORD)(ROTR((x),28)^ROTR((x),34)^ROTR((x),39)))

Definition at line 21 of file sha512.c.

#define SUM1 (   x)    ((SHA512_WORD)(ROTR((x),14)^ROTR((x),18)^ROTR((x),41)))

Definition at line 22 of file sha512.c.

#define TH0 (   x)    ((SHA512_WORD)(ROTR((x),1)^ROTR((x),8)^((SHA512_WORD)(x)>>7)))

Definition at line 24 of file sha512.c.

#define TH1 (   x)    ((SHA512_WORD)(ROTR((x),19)^ROTR((x),61)^((SHA512_WORD)(x)>>6)))

Definition at line 25 of file sha512.c.


Function Documentation

void sha512_context_digest ( struct SHA512_CONTEXT *  c,
SHA512_DIGEST  d 
)

Definition at line 183 of file sha512.c.

{
       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;
       }
}

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void sha512_context_endstream ( struct SHA512_CONTEXT *  c,
SHA512_WORD  l 
)

Definition at line 152 of file sha512.c.

{
       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));
}

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void sha512_context_hash ( struct SHA512_CONTEXT *  cc,
const unsigned char  blk[SHA512_BLOCK_SIZE] 
)

Definition at line 66 of file sha512.c.

{
       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;
}

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void sha512_context_hashstream ( struct SHA512_CONTEXT *  c,
const void *  p,
unsigned  l 
)

Definition at line 122 of file sha512.c.

{
       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;
              }
       }
}

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void sha512_context_init ( struct SHA512_CONTEXT *  c)

Definition at line 49 of file sha512.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;
}

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void sha512_context_restore ( struct SHA512_CONTEXT *  c,
const SHA512_DIGEST  d 
)

Definition at line 203 of file sha512.c.

{
       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 
)

Definition at line 224 of file sha512.c.

{
       struct SHA512_CONTEXT c;

       sha512_context_init( &c );
       sha512_context_hashstream(&c, msg, len);
       sha512_context_endstream(&c, len);
       sha512_context_digest( &c, d );
}

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Variable Documentation

const SHA512_WORD K[80] [static]
Initial value:
{
       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}

Definition at line 27 of file sha512.c.