--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst-libs/gst/cdda/sha1.c Wed Sep 01 12:16:41 2010 +0100
@@ -0,0 +1,450 @@
+/* (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);
+}