summaryrefslogtreecommitdiff
path: root/source4/lib/crypto/sha256.c
diff options
context:
space:
mode:
Diffstat (limited to 'source4/lib/crypto/sha256.c')
-rw-r--r--source4/lib/crypto/sha256.c253
1 files changed, 0 insertions, 253 deletions
diff --git a/source4/lib/crypto/sha256.c b/source4/lib/crypto/sha256.c
deleted file mode 100644
index a2def25814..0000000000
--- a/source4/lib/crypto/sha256.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- based on heildal lib/hcrypto/sha256.c. Copied to lib/crypto to avoid a link
- problem. Hopefully will be removed once we solve this link problem
-
- (tridge)
- */
-
-/*
- * Copyright (c) 2006 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "includes.h"
-#include "sha256.h"
-
-#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
-#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
-
-#define ROTR(x,n) (((x)>>(n)) | ((x) << (32 - (n))))
-
-#define Sigma0(x) (ROTR(x,2) ^ ROTR(x,13) ^ ROTR(x,22))
-#define Sigma1(x) (ROTR(x,6) ^ ROTR(x,11) ^ ROTR(x,25))
-#define sigma0(x) (ROTR(x,7) ^ ROTR(x,18) ^ ((x)>>3))
-#define sigma1(x) (ROTR(x,17) ^ ROTR(x,19) ^ ((x)>>10))
-
-#define A m->counter[0]
-#define B m->counter[1]
-#define C m->counter[2]
-#define D m->counter[3]
-#define E m->counter[4]
-#define F m->counter[5]
-#define G m->counter[6]
-#define H m->counter[7]
-
-static const uint32_t constant_256[64] = {
- 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
- 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
- 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
- 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
- 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
- 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
- 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
- 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
- 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
- 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
- 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
- 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
- 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
- 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
- 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
- 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
-};
-
-void
-SHA256_Init (SHA256_CTX *m)
-{
- m->sz[0] = 0;
- m->sz[1] = 0;
- A = 0x6a09e667;
- B = 0xbb67ae85;
- C = 0x3c6ef372;
- D = 0xa54ff53a;
- E = 0x510e527f;
- F = 0x9b05688c;
- G = 0x1f83d9ab;
- H = 0x5be0cd19;
-}
-
-static void
-calc (SHA256_CTX *m, uint32_t *in)
-{
- uint32_t AA, BB, CC, DD, EE, FF, GG, HH;
- uint32_t data[64];
- int i;
-
- AA = A;
- BB = B;
- CC = C;
- DD = D;
- EE = E;
- FF = F;
- GG = G;
- HH = H;
-
- for (i = 0; i < 16; ++i)
- data[i] = in[i];
- for (i = 16; i < 64; ++i)
- data[i] = sigma1(data[i-2]) + data[i-7] +
- sigma0(data[i-15]) + data[i - 16];
-
- for (i = 0; i < 64; i++) {
- uint32_t T1, T2;
-
- T1 = HH + Sigma1(EE) + Ch(EE, FF, GG) + constant_256[i] + data[i];
- T2 = Sigma0(AA) + Maj(AA,BB,CC);
-
- HH = GG;
- GG = FF;
- FF = EE;
- EE = DD + T1;
- DD = CC;
- CC = BB;
- BB = AA;
- AA = T1 + T2;
- }
-
- A += AA;
- B += BB;
- C += CC;
- D += DD;
- E += EE;
- F += FF;
- G += GG;
- H += HH;
-}
-
-/*
- * From `Performance analysis of MD5' by Joseph D. Touch <touch@isi.edu>
- */
-
-#if !defined(WORDS_BIGENDIAN) || defined(_CRAY)
-/* Vector Crays doesn't have a good 32-bit type, or more precisely,
- int32_t as defined by <bind/bitypes.h> isn't 32 bits, and we don't
- want to depend in being able to redefine this type. To cope with
- this we have to clamp the result in some places to [0,2^32); no
- need to do this on other machines. Did I say this was a mess?
- */
-
-#ifdef _CRAY
-#define CRAYFIX(X) ((X) & 0xffffffff)
-#else
-#define CRAYFIX(X) (X)
-#endif
-
-static inline uint32_t
-cshift (uint32_t x, unsigned int n)
-{
- x = CRAYFIX(x);
- return CRAYFIX((x << n) | (x >> (32 - n)));
-}
-
-static inline uint32_t
-swap_uint32_t (uint32_t t)
-{
- uint32_t temp1, temp2;
-
- temp1 = cshift(t, 16);
- temp2 = temp1 >> 8;
- temp1 &= 0x00ff00ff;
- temp2 &= 0x00ff00ff;
- temp1 <<= 8;
- return temp1 | temp2;
-}
-#endif
-
-struct x32{
- unsigned int a:32;
- unsigned int b:32;
-};
-
-void
-SHA256_Update (SHA256_CTX *m, const void *v, size_t len)
-{
- const unsigned char *p = v;
- size_t old_sz = m->sz[0];
- size_t offset;
-
- m->sz[0] += len * 8;
- if (m->sz[0] < old_sz)
- ++m->sz[1];
- offset = (old_sz / 8) % 64;
- while(len > 0){
- size_t l = MIN(len, 64 - offset);
- memcpy(m->save + offset, p, l);
- offset += l;
- p += l;
- len -= l;
- if(offset == 64){
-#if !defined(WORDS_BIGENDIAN) || defined(_CRAY)
- int i;
- uint32_t current[16];
- struct x32 *u = (struct x32*)m->save;
- for(i = 0; i < 8; i++){
- current[2*i+0] = swap_uint32_t(u[i].a);
- current[2*i+1] = swap_uint32_t(u[i].b);
- }
- calc(m, current);
-#else
- calc(m, (uint32_t*)m->save);
-#endif
- offset = 0;
- }
- }
-}
-
-void
-SHA256_Final (void *res, SHA256_CTX *m)
-{
- unsigned char zeros[72];
- unsigned offset = (m->sz[0] / 8) % 64;
- unsigned int dstart = (120 - offset - 1) % 64 + 1;
-
- *zeros = 0x80;
- memset (zeros + 1, 0, sizeof(zeros) - 1);
- zeros[dstart+7] = (m->sz[0] >> 0) & 0xff;
- zeros[dstart+6] = (m->sz[0] >> 8) & 0xff;
- zeros[dstart+5] = (m->sz[0] >> 16) & 0xff;
- zeros[dstart+4] = (m->sz[0] >> 24) & 0xff;
- zeros[dstart+3] = (m->sz[1] >> 0) & 0xff;
- zeros[dstart+2] = (m->sz[1] >> 8) & 0xff;
- zeros[dstart+1] = (m->sz[1] >> 16) & 0xff;
- zeros[dstart+0] = (m->sz[1] >> 24) & 0xff;
- SHA256_Update (m, zeros, dstart + 8);
- {
- int i;
- unsigned char *r = (unsigned char*)res;
-
- for (i = 0; i < 8; ++i) {
- r[4*i+3] = m->counter[i] & 0xFF;
- r[4*i+2] = (m->counter[i] >> 8) & 0xFF;
- r[4*i+1] = (m->counter[i] >> 16) & 0xFF;
- r[4*i] = (m->counter[i] >> 24) & 0xFF;
- }
- }
-}
generated by cgit (git 2.34.1) at 2024-12-26 08:51:16 +0000