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gst_plugins_base/gst-libs/gst/cdda/sha1.c
branchRCL_3
changeset 29 567bb019e3e3
parent 6 9b2c3c7a1a9c
child 30 7e817e7e631c 
--- a/gst_plugins_base/gst-libs/gst/cdda/sha1.c	Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,450 +0,0 @@
-/* (PD) 2001 The Bitzi Corporation
- * Please see file COPYING or http://bitzi.com/publicdomain 
- * for more info.
- *
- * NIST Secure Hash Algorithm 
- * heavily modified by Uwe Hollerbach <uh@alumni.caltech edu> 
- * from Peter C. Gutmann's implementation as found in 
- * Applied Cryptography by Bruce Schneier 
- * Further modifications to include the "UNRAVEL" stuff, below 
- *
- * This code is in the public domain 
- *
- * $Id: sha1.c,v 1.2 2008-02-27 10:42:08 slomo Exp $
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <glib.h>
-#define SHA_BYTE_ORDER G_BYTE_ORDER
-
-#include <string.h>
-#include "sha1.h"
-
-/* UNRAVEL should be fastest & biggest */
-/* UNROLL_LOOPS should be just as big, but slightly slower */
-/* both undefined should be smallest and slowest */
-
-#define UNRAVEL
-/* #define UNROLL_LOOPS */
-
-/* SHA f()-functions */
-
-#define f1(x,y,z)	((x & y) | (~x & z))
-#define f2(x,y,z)	(x ^ y ^ z)
-#define f3(x,y,z)	((x & y) | (x & z) | (y & z))
-#define f4(x,y,z)	(x ^ y ^ z)
-
-/* SHA constants */
-
-#define CONST1		0x5a827999L
-#define CONST2		0x6ed9eba1L
-#define CONST3		0x8f1bbcdcL
-#define CONST4		0xca62c1d6L
-
-/* truncate to 32 bits -- should be a null op on 32-bit machines */
-
-#define T32(x)	((x) & 0xffffffffL)
-
-/* 32-bit rotate */
-
-#define R32(x,n)	T32(((x << n) | (x >> (32 - n))))
-
-/* the generic case, for when the overall rotation is not unraveled */
-
-#define FG(n)	\
-    T = T32(R32(A,5) + f##n(B,C,D) + E + *WP++ + CONST##n);	\
-    E = D; D = C; C = R32(B,30); B = A; A = T
-
-/* specific cases, for when the overall rotation is unraveled */
-
-#define FA(n)	\
-    T = T32(R32(A,5) + f##n(B,C,D) + E + *WP++ + CONST##n); B = R32(B,30)
-
-#define FB(n)	\
-    E = T32(R32(T,5) + f##n(A,B,C) + D + *WP++ + CONST##n); A = R32(A,30)
-
-#define FC(n)	\
-    D = T32(R32(E,5) + f##n(T,A,B) + C + *WP++ + CONST##n); T = R32(T,30)
-
-#define FD(n)	\
-    C = T32(R32(D,5) + f##n(E,T,A) + B + *WP++ + CONST##n); E = R32(E,30)
-
-#define FE(n)	\
-    B = T32(R32(C,5) + f##n(D,E,T) + A + *WP++ + CONST##n); D = R32(D,30)
-
-#define FT(n)	\
-    A = T32(R32(B,5) + f##n(C,D,E) + T + *WP++ + CONST##n); C = R32(C,30)
-
-/* do SHA transformation */
-
-static void
-sha_transform (SHA_INFO * sha_info)
-{
-  int i;
-  SHA_BYTE *dp;
-  SHA_LONG T, A, B, C, D, E, W[80], *WP;
-
-  dp = sha_info->data;
-
-/*
-the following makes sure that at least one code block below is
-traversed or an error is reported, without the necessity for nested
-preprocessor if/else/endif blocks, which are a great pain in the
-nether regions of the anatomy...
-*/
-#undef SWAP_DONE
-
-#if (SHA_BYTE_ORDER == 1234)
-#define SWAP_DONE
-  for (i = 0; i < 16; ++i) {
-    memcpy (&T, dp, sizeof (SHA_LONG));
-    dp += 4;
-    W[i] = ((T << 24) & 0xff000000) | ((T << 8) & 0x00ff0000) |
-        ((T >> 8) & 0x0000ff00) | ((T >> 24) & 0x000000ff);
-  }
-#endif /* SHA_BYTE_ORDER == 1234 */
-
-#if (SHA_BYTE_ORDER == 4321)
-#define SWAP_DONE
-  for (i = 0; i < 16; ++i) {
-    memcpy (&T, dp, sizeof (SHA_LONG));
-    dp += 4;
-    W[i] = T32 (T);
-  }
-#endif /* SHA_BYTE_ORDER == 4321 */
-
-#if (SHA_BYTE_ORDER == 12345678)
-#define SWAP_DONE
-  for (i = 0; i < 16; i += 2) {
-    memcpy (&T, dp, sizeof (SHA_LONG));
-    dp += 8;
-    W[i] = ((T << 24) & 0xff000000) | ((T << 8) & 0x00ff0000) |
-        ((T >> 8) & 0x0000ff00) | ((T >> 24) & 0x000000ff);
-    T >>= 32;
-    W[i + 1] = ((T << 24) & 0xff000000) | ((T << 8) & 0x00ff0000) |
-        ((T >> 8) & 0x0000ff00) | ((T >> 24) & 0x000000ff);
-  }
-#endif /* SHA_BYTE_ORDER == 12345678 */
-
-#if (SHA_BYTE_ORDER == 87654321)
-#define SWAP_DONE
-  for (i = 0; i < 16; i += 2) {
-    memcpy (&T, dp, sizeof (SHA_LONG));
-    dp += 8;
-    W[i] = T32 (T >> 32);
-    W[i + 1] = T32 (T);
-  }
-#endif /* SHA_BYTE_ORDER == 87654321 */
-
-#ifndef SWAP_DONE
-#error Unknown byte order -- you need to add code here
-#endif /* SWAP_DONE */
-
-  for (i = 16; i < 80; ++i) {
-    W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];
-#if (SHA_VERSION == 1)
-    W[i] = R32 (W[i], 1);
-#endif /* SHA_VERSION */
-  }
-  A = sha_info->digest[0];
-  B = sha_info->digest[1];
-  C = sha_info->digest[2];
-  D = sha_info->digest[3];
-  E = sha_info->digest[4];
-  WP = W;
-#ifdef UNRAVEL
-  FA (1);
-  FB (1);
-  FC (1);
-  FD (1);
-  FE (1);
-  FT (1);
-  FA (1);
-  FB (1);
-  FC (1);
-  FD (1);
-  FE (1);
-  FT (1);
-  FA (1);
-  FB (1);
-  FC (1);
-  FD (1);
-  FE (1);
-  FT (1);
-  FA (1);
-  FB (1);
-  FC (2);
-  FD (2);
-  FE (2);
-  FT (2);
-  FA (2);
-  FB (2);
-  FC (2);
-  FD (2);
-  FE (2);
-  FT (2);
-  FA (2);
-  FB (2);
-  FC (2);
-  FD (2);
-  FE (2);
-  FT (2);
-  FA (2);
-  FB (2);
-  FC (2);
-  FD (2);
-  FE (3);
-  FT (3);
-  FA (3);
-  FB (3);
-  FC (3);
-  FD (3);
-  FE (3);
-  FT (3);
-  FA (3);
-  FB (3);
-  FC (3);
-  FD (3);
-  FE (3);
-  FT (3);
-  FA (3);
-  FB (3);
-  FC (3);
-  FD (3);
-  FE (3);
-  FT (3);
-  FA (4);
-  FB (4);
-  FC (4);
-  FD (4);
-  FE (4);
-  FT (4);
-  FA (4);
-  FB (4);
-  FC (4);
-  FD (4);
-  FE (4);
-  FT (4);
-  FA (4);
-  FB (4);
-  FC (4);
-  FD (4);
-  FE (4);
-  FT (4);
-  FA (4);
-  FB (4);
-  sha_info->digest[0] = T32 (sha_info->digest[0] + E);
-  sha_info->digest[1] = T32 (sha_info->digest[1] + T);
-  sha_info->digest[2] = T32 (sha_info->digest[2] + A);
-  sha_info->digest[3] = T32 (sha_info->digest[3] + B);
-  sha_info->digest[4] = T32 (sha_info->digest[4] + C);
-#else /* !UNRAVEL */
-#ifdef UNROLL_LOOPS
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (1);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (2);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (3);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-  FG (4);
-#else /* !UNROLL_LOOPS */
-  for (i = 0; i < 20; ++i) {
-    FG (1);
-  }
-  for (i = 20; i < 40; ++i) {
-    FG (2);
-  }
-  for (i = 40; i < 60; ++i) {
-    FG (3);
-  }
-  for (i = 60; i < 80; ++i) {
-    FG (4);
-  }
-#endif /* !UNROLL_LOOPS */
-  sha_info->digest[0] = T32 (sha_info->digest[0] + A);
-  sha_info->digest[1] = T32 (sha_info->digest[1] + B);
-  sha_info->digest[2] = T32 (sha_info->digest[2] + C);
-  sha_info->digest[3] = T32 (sha_info->digest[3] + D);
-  sha_info->digest[4] = T32 (sha_info->digest[4] + E);
-#endif /* !UNRAVEL */
-}
-
-/* initialize the SHA digest */
-
-void
-sha_init (SHA_INFO * sha_info)
-{
-  sha_info->digest[0] = 0x67452301L;
-  sha_info->digest[1] = 0xefcdab89L;
-  sha_info->digest[2] = 0x98badcfeL;
-  sha_info->digest[3] = 0x10325476L;
-  sha_info->digest[4] = 0xc3d2e1f0L;
-  sha_info->count_lo = 0L;
-  sha_info->count_hi = 0L;
-  sha_info->local = 0;
-}
-
-/* update the SHA digest */
-
-void
-sha_update (SHA_INFO * sha_info, SHA_BYTE * buffer, int count)
-{
-  int i;
-  SHA_LONG clo;
-
-  clo = T32 (sha_info->count_lo + ((SHA_LONG) count << 3));
-  if (clo < sha_info->count_lo) {
-    ++sha_info->count_hi;
-  }
-  sha_info->count_lo = clo;
-  sha_info->count_hi += (SHA_LONG) count >> 29;
-  if (sha_info->local) {
-    i = SHA_BLOCKSIZE - sha_info->local;
-    if (i > count) {
-      i = count;
-    }
-    memcpy (((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i);
-    count -= i;
-    buffer += i;
-    sha_info->local += i;
-    if (sha_info->local == SHA_BLOCKSIZE) {
-      sha_transform (sha_info);
-    } else {
-      return;
-    }
-  }
-  while (count >= SHA_BLOCKSIZE) {
-    memcpy (sha_info->data, buffer, SHA_BLOCKSIZE);
-    buffer += SHA_BLOCKSIZE;
-    count -= SHA_BLOCKSIZE;
-    sha_transform (sha_info);
-  }
-  memcpy (sha_info->data, buffer, count);
-  sha_info->local = count;
-}
-
-/* finish computing the SHA digest */
-
-void
-sha_final (unsigned char digest[20], SHA_INFO * sha_info)
-{
-  int count;
-  SHA_LONG lo_bit_count, hi_bit_count;
-
-  lo_bit_count = sha_info->count_lo;
-  hi_bit_count = sha_info->count_hi;
-  count = (int) ((lo_bit_count >> 3) & 0x3f);
-  ((SHA_BYTE *) sha_info->data)[count++] = 0x80;
-  if (count > SHA_BLOCKSIZE - 8) {
-    memset (((SHA_BYTE *) sha_info->data) + count, 0, SHA_BLOCKSIZE - count);
-    sha_transform (sha_info);
-    memset ((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 8);
-  } else {
-    memset (((SHA_BYTE *) sha_info->data) + count, 0,
-        SHA_BLOCKSIZE - 8 - count);
-  }
-  sha_info->data[56] = (unsigned char) ((hi_bit_count >> 24) & 0xff);
-  sha_info->data[57] = (unsigned char) ((hi_bit_count >> 16) & 0xff);
-  sha_info->data[58] = (unsigned char) ((hi_bit_count >> 8) & 0xff);
-  sha_info->data[59] = (unsigned char) ((hi_bit_count >> 0) & 0xff);
-  sha_info->data[60] = (unsigned char) ((lo_bit_count >> 24) & 0xff);
-  sha_info->data[61] = (unsigned char) ((lo_bit_count >> 16) & 0xff);
-  sha_info->data[62] = (unsigned char) ((lo_bit_count >> 8) & 0xff);
-  sha_info->data[63] = (unsigned char) ((lo_bit_count >> 0) & 0xff);
-  sha_transform (sha_info);
-  digest[0] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff);
-  digest[1] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff);
-  digest[2] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff);
-  digest[3] = (unsigned char) ((sha_info->digest[0]) & 0xff);
-  digest[4] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff);
-  digest[5] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff);
-  digest[6] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff);
-  digest[7] = (unsigned char) ((sha_info->digest[1]) & 0xff);
-  digest[8] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff);
-  digest[9] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff);
-  digest[10] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff);
-  digest[11] = (unsigned char) ((sha_info->digest[2]) & 0xff);
-  digest[12] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff);
-  digest[13] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff);
-  digest[14] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff);
-  digest[15] = (unsigned char) ((sha_info->digest[3]) & 0xff);
-  digest[16] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff);
-  digest[17] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff);
-  digest[18] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff);
-  digest[19] = (unsigned char) ((sha_info->digest[4]) & 0xff);
-}
FCL/sf/mw/gstreamer