+/* $KAME: md5.c,v 1.5 2000/11/08 06:13:08 itojun Exp $ */
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * 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 project 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 PROJECT 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 PROJECT 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.
+ */
+
+#if 0
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/sys/crypto/md5.c,v 1.9 2004/01/27 19:49:19 des Exp $");
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/time.h>
+#include <sys/systm.h>
+#include <crypto/md5.h>
+#endif
+
+#define SHIFT(X, s) (((X) << (s)) | ((X) >> (32 - (s))))
+
+#define F(X, Y, Z) (((X) & (Y)) | ((~X) & (Z)))
+#define G(X, Y, Z) (((X) & (Z)) | ((Y) & (~Z)))
+#define H(X, Y, Z) ((X) ^ (Y) ^ (Z))
+#define I(X, Y, Z) ((Y) ^ ((X) | (~Z)))
+
+#define ROUND1(a, b, c, d, k, s, i) { \
+ (a) = (a) + F((b), (c), (d)) + X[(k)] + T[(i)]; \
+ (a) = SHIFT((a), (s)); \
+ (a) = (b) + (a); \
+}
+
+#define ROUND2(a, b, c, d, k, s, i) { \
+ (a) = (a) + G((b), (c), (d)) + X[(k)] + T[(i)]; \
+ (a) = SHIFT((a), (s)); \
+ (a) = (b) + (a); \
+}
+
+#define ROUND3(a, b, c, d, k, s, i) { \
+ (a) = (a) + H((b), (c), (d)) + X[(k)] + T[(i)]; \
+ (a) = SHIFT((a), (s)); \
+ (a) = (b) + (a); \
+}
+
+#define ROUND4(a, b, c, d, k, s, i) { \
+ (a) = (a) + I((b), (c), (d)) + X[(k)] + T[(i)]; \
+ (a) = SHIFT((a), (s)); \
+ (a) = (b) + (a); \
+}
+
+#define Sa 7
+#define Sb 12
+#define Sc 17
+#define Sd 22
+
+#define Se 5
+#define Sf 9
+#define Sg 14
+#define Sh 20
+
+#define Si 4
+#define Sj 11
+#define Sk 16
+#define Sl 23
+
+#define Sm 6
+#define Sn 10
+#define So 15
+#define Sp 21
+
+#define MD5_A0 0x67452301
+#define MD5_B0 0xefcdab89
+#define MD5_C0 0x98badcfe
+#define MD5_D0 0x10325476
+
+/* Integer part of 4294967296 times abs(sin(i)), where i is in radians. */
+static const u_int32_t T[65] = {
+ 0,
+ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+
+ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+ 0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
+ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+
+ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
+ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+
+ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
+};
+
+static const u_int8_t md5_paddat[MD5_BUFLEN] = {
+ 0x80, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+};
+
+static void md5_calc(u_int8_t *, md5_ctxt *);
+
+void md5_init(ctxt)
+ md5_ctxt *ctxt;
+{
+ ctxt->md5_n = 0;
+ ctxt->md5_i = 0;
+ ctxt->md5_sta = MD5_A0;
+ ctxt->md5_stb = MD5_B0;
+ ctxt->md5_stc = MD5_C0;
+ ctxt->md5_std = MD5_D0;
+ bzero(ctxt->md5_buf, sizeof(ctxt->md5_buf));
+}
+
+void md5_loop(ctxt, input, len)
+ md5_ctxt *ctxt;
+ u_int8_t *input;
+ u_int len; /* number of bytes */
+{
+ u_int gap, i;
+
+ ctxt->md5_n += len * 8; /* byte to bit */
+ gap = MD5_BUFLEN - ctxt->md5_i;
+
+ if (len >= gap) {
+ bcopy((void *)input, (void *)(ctxt->md5_buf + ctxt->md5_i),
+ gap);
+ md5_calc(ctxt->md5_buf, ctxt);
+
+ for (i = gap; i + MD5_BUFLEN <= len; i += MD5_BUFLEN) {
+ md5_calc((u_int8_t *)(input + i), ctxt);
+ }
+
+ ctxt->md5_i = len - i;
+ bcopy((void *)(input + i), (void *)ctxt->md5_buf, ctxt->md5_i);
+ } else {
+ bcopy((void *)input, (void *)(ctxt->md5_buf + ctxt->md5_i),
+ len);
+ ctxt->md5_i += len;
+ }
+}
+
+void md5_pad(ctxt)
+ md5_ctxt *ctxt;
+{
+ u_int gap;
+
+ /* Don't count up padding. Keep md5_n. */
+ gap = MD5_BUFLEN - ctxt->md5_i;
+ if (gap > 8) {
+ bcopy(md5_paddat,
+ (void *)(ctxt->md5_buf + ctxt->md5_i),
+ gap - sizeof(ctxt->md5_n));
+ } else {
+ /* including gap == 8 */
+ bcopy(md5_paddat, (void *)(ctxt->md5_buf + ctxt->md5_i),
+ gap);
+ md5_calc(ctxt->md5_buf, ctxt);
+ bcopy((md5_paddat + gap),
+ (void *)ctxt->md5_buf,
+ MD5_BUFLEN - sizeof(ctxt->md5_n));
+ }
+
+ /* 8 byte word */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ bcopy(&ctxt->md5_n8[0], &ctxt->md5_buf[56], 8);
+#endif
+#if BYTE_ORDER == BIG_ENDIAN
+ ctxt->md5_buf[56] = ctxt->md5_n8[7];
+ ctxt->md5_buf[57] = ctxt->md5_n8[6];
+ ctxt->md5_buf[58] = ctxt->md5_n8[5];
+ ctxt->md5_buf[59] = ctxt->md5_n8[4];
+ ctxt->md5_buf[60] = ctxt->md5_n8[3];
+ ctxt->md5_buf[61] = ctxt->md5_n8[2];
+ ctxt->md5_buf[62] = ctxt->md5_n8[1];
+ ctxt->md5_buf[63] = ctxt->md5_n8[0];
+#endif
+
+ md5_calc(ctxt->md5_buf, ctxt);
+}
+
+void md5_result(digest, ctxt)
+ u_int8_t *digest;
+ md5_ctxt *ctxt;
+{
+ /* 4 byte words */
+#if BYTE_ORDER == LITTLE_ENDIAN
+ bcopy(&ctxt->md5_st8[0], digest, 16);
+#endif
+#if BYTE_ORDER == BIG_ENDIAN
+ digest[ 0] = ctxt->md5_st8[ 3]; digest[ 1] = ctxt->md5_st8[ 2];
+ digest[ 2] = ctxt->md5_st8[ 1]; digest[ 3] = ctxt->md5_st8[ 0];
+ digest[ 4] = ctxt->md5_st8[ 7]; digest[ 5] = ctxt->md5_st8[ 6];
+ digest[ 6] = ctxt->md5_st8[ 5]; digest[ 7] = ctxt->md5_st8[ 4];
+ digest[ 8] = ctxt->md5_st8[11]; digest[ 9] = ctxt->md5_st8[10];
+ digest[10] = ctxt->md5_st8[ 9]; digest[11] = ctxt->md5_st8[ 8];
+ digest[12] = ctxt->md5_st8[15]; digest[13] = ctxt->md5_st8[14];
+ digest[14] = ctxt->md5_st8[13]; digest[15] = ctxt->md5_st8[12];
+#endif
+}
+
+static void md5_calc(b64, ctxt)
+ u_int8_t *b64;
+ md5_ctxt *ctxt;
+{
+ u_int32_t A = ctxt->md5_sta;
+ u_int32_t B = ctxt->md5_stb;
+ u_int32_t C = ctxt->md5_stc;
+ u_int32_t D = ctxt->md5_std;
+#if BYTE_ORDER == LITTLE_ENDIAN
+ u_int32_t *X = (u_int32_t *)b64;
+#endif
+#if BYTE_ORDER == BIG_ENDIAN
+ /* 4 byte words */
+ /* what a brute force but fast! */
+ u_int32_t X[16];
+ u_int8_t *y = (u_int8_t *)X;
+ y[ 0] = b64[ 3]; y[ 1] = b64[ 2]; y[ 2] = b64[ 1]; y[ 3] = b64[ 0];
+ y[ 4] = b64[ 7]; y[ 5] = b64[ 6]; y[ 6] = b64[ 5]; y[ 7] = b64[ 4];
+ y[ 8] = b64[11]; y[ 9] = b64[10]; y[10] = b64[ 9]; y[11] = b64[ 8];
+ y[12] = b64[15]; y[13] = b64[14]; y[14] = b64[13]; y[15] = b64[12];
+ y[16] = b64[19]; y[17] = b64[18]; y[18] = b64[17]; y[19] = b64[16];
+ y[20] = b64[23]; y[21] = b64[22]; y[22] = b64[21]; y[23] = b64[20];
+ y[24] = b64[27]; y[25] = b64[26]; y[26] = b64[25]; y[27] = b64[24];
+ y[28] = b64[31]; y[29] = b64[30]; y[30] = b64[29]; y[31] = b64[28];
+ y[32] = b64[35]; y[33] = b64[34]; y[34] = b64[33]; y[35] = b64[32];
+ y[36] = b64[39]; y[37] = b64[38]; y[38] = b64[37]; y[39] = b64[36];
+ y[40] = b64[43]; y[41] = b64[42]; y[42] = b64[41]; y[43] = b64[40];
+ y[44] = b64[47]; y[45] = b64[46]; y[46] = b64[45]; y[47] = b64[44];
+ y[48] = b64[51]; y[49] = b64[50]; y[50] = b64[49]; y[51] = b64[48];
+ y[52] = b64[55]; y[53] = b64[54]; y[54] = b64[53]; y[55] = b64[52];
+ y[56] = b64[59]; y[57] = b64[58]; y[58] = b64[57]; y[59] = b64[56];
+ y[60] = b64[63]; y[61] = b64[62]; y[62] = b64[61]; y[63] = b64[60];
+#endif
+
+ ROUND1(A, B, C, D, 0, Sa, 1); ROUND1(D, A, B, C, 1, Sb, 2);
+ ROUND1(C, D, A, B, 2, Sc, 3); ROUND1(B, C, D, A, 3, Sd, 4);
+ ROUND1(A, B, C, D, 4, Sa, 5); ROUND1(D, A, B, C, 5, Sb, 6);
+ ROUND1(C, D, A, B, 6, Sc, 7); ROUND1(B, C, D, A, 7, Sd, 8);
+ ROUND1(A, B, C, D, 8, Sa, 9); ROUND1(D, A, B, C, 9, Sb, 10);
+ ROUND1(C, D, A, B, 10, Sc, 11); ROUND1(B, C, D, A, 11, Sd, 12);
+ ROUND1(A, B, C, D, 12, Sa, 13); ROUND1(D, A, B, C, 13, Sb, 14);
+ ROUND1(C, D, A, B, 14, Sc, 15); ROUND1(B, C, D, A, 15, Sd, 16);
+
+ ROUND2(A, B, C, D, 1, Se, 17); ROUND2(D, A, B, C, 6, Sf, 18);
+ ROUND2(C, D, A, B, 11, Sg, 19); ROUND2(B, C, D, A, 0, Sh, 20);
+ ROUND2(A, B, C, D, 5, Se, 21); ROUND2(D, A, B, C, 10, Sf, 22);
+ ROUND2(C, D, A, B, 15, Sg, 23); ROUND2(B, C, D, A, 4, Sh, 24);
+ ROUND2(A, B, C, D, 9, Se, 25); ROUND2(D, A, B, C, 14, Sf, 26);
+ ROUND2(C, D, A, B, 3, Sg, 27); ROUND2(B, C, D, A, 8, Sh, 28);
+ ROUND2(A, B, C, D, 13, Se, 29); ROUND2(D, A, B, C, 2, Sf, 30);
+ ROUND2(C, D, A, B, 7, Sg, 31); ROUND2(B, C, D, A, 12, Sh, 32);
+
+ ROUND3(A, B, C, D, 5, Si, 33); ROUND3(D, A, B, C, 8, Sj, 34);
+ ROUND3(C, D, A, B, 11, Sk, 35); ROUND3(B, C, D, A, 14, Sl, 36);
+ ROUND3(A, B, C, D, 1, Si, 37); ROUND3(D, A, B, C, 4, Sj, 38);
+ ROUND3(C, D, A, B, 7, Sk, 39); ROUND3(B, C, D, A, 10, Sl, 40);
+ ROUND3(A, B, C, D, 13, Si, 41); ROUND3(D, A, B, C, 0, Sj, 42);
+ ROUND3(C, D, A, B, 3, Sk, 43); ROUND3(B, C, D, A, 6, Sl, 44);
+ ROUND3(A, B, C, D, 9, Si, 45); ROUND3(D, A, B, C, 12, Sj, 46);
+ ROUND3(C, D, A, B, 15, Sk, 47); ROUND3(B, C, D, A, 2, Sl, 48);
+
+ ROUND4(A, B, C, D, 0, Sm, 49); ROUND4(D, A, B, C, 7, Sn, 50);
+ ROUND4(C, D, A, B, 14, So, 51); ROUND4(B, C, D, A, 5, Sp, 52);
+ ROUND4(A, B, C, D, 12, Sm, 53); ROUND4(D, A, B, C, 3, Sn, 54);
+ ROUND4(C, D, A, B, 10, So, 55); ROUND4(B, C, D, A, 1, Sp, 56);
+ ROUND4(A, B, C, D, 8, Sm, 57); ROUND4(D, A, B, C, 15, Sn, 58);
+ ROUND4(C, D, A, B, 6, So, 59); ROUND4(B, C, D, A, 13, Sp, 60);
+ ROUND4(A, B, C, D, 4, Sm, 61); ROUND4(D, A, B, C, 11, Sn, 62);
+ ROUND4(C, D, A, B, 2, So, 63); ROUND4(B, C, D, A, 9, Sp, 64);
+
+ ctxt->md5_sta += A;
+ ctxt->md5_stb += B;
+ ctxt->md5_stc += C;
+ ctxt->md5_std += D;
+}
projects / openwrt / svn-archive / archive.git / blobdiff