+++ /dev/null
-/* $KAME: sha1.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.
- */
-
-/*
- * FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
- * based on: http://csrc.nist.gov/fips/fip180-1.txt
- * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
- */
-
-#if 0
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/sys/crypto/sha1.c,v 1.9 2003/06/10 21:36:57 obrien Exp $");
-
-#include <sys/types.h>
-#include <sys/cdefs.h>
-#include <sys/time.h>
-#include <sys/systm.h>
-
-#include <crypto/sha1.h>
-#endif
-
-/* sanity check */
-#if BYTE_ORDER != BIG_ENDIAN
-# if BYTE_ORDER != LITTLE_ENDIAN
-# define unsupported 1
-# endif
-#endif
-
-#ifndef unsupported
-
-/* constant table */
-static u_int32_t _K[] = { 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 };
-#define K(t) _K[(t) / 20]
-
-#define F0(b, c, d) (((b) & (c)) | ((~(b)) & (d)))
-#define F1(b, c, d) (((b) ^ (c)) ^ (d))
-#define F2(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
-#define F3(b, c, d) (((b) ^ (c)) ^ (d))
-
-#define S(n, x) (((x) << (n)) | ((x) >> (32 - n)))
-
-#undef H
-#define H(n) (ctxt->h.b32[(n)])
-#define COUNT (ctxt->count)
-#define BCOUNT (ctxt->c.b64[0] / 8)
-#define W(n) (ctxt->m.b32[(n)])
-
-#define PUTBYTE(x) { \
- ctxt->m.b8[(COUNT % 64)] = (x); \
- COUNT++; \
- COUNT %= 64; \
- ctxt->c.b64[0] += 8; \
- if (COUNT % 64 == 0) \
- sha1_step(ctxt); \
- }
-
-#define PUTPAD(x) { \
- ctxt->m.b8[(COUNT % 64)] = (x); \
- COUNT++; \
- COUNT %= 64; \
- if (COUNT % 64 == 0) \
- sha1_step(ctxt); \
- }
-
-static void sha1_step(struct sha1_ctxt *);
-
-static void
-sha1_step(ctxt)
- struct sha1_ctxt *ctxt;
-{
- u_int32_t a, b, c, d, e;
- size_t t, s;
- u_int32_t tmp;
-
-#if BYTE_ORDER == LITTLE_ENDIAN
- struct sha1_ctxt tctxt;
- bcopy(&ctxt->m.b8[0], &tctxt.m.b8[0], 64);
- ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2];
- ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0];
- ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6];
- ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4];
- ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10];
- ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8];
- ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14];
- ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12];
- ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18];
- ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16];
- ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22];
- ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20];
- ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26];
- ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24];
- ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30];
- ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28];
- ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34];
- ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32];
- ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38];
- ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36];
- ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42];
- ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40];
- ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46];
- ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44];
- ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50];
- ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48];
- ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54];
- ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52];
- ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58];
- ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56];
- ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62];
- ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60];
-#endif
-
- a = H(0); b = H(1); c = H(2); d = H(3); e = H(4);
-
- for (t = 0; t < 20; t++) {
- s = t & 0x0f;
- if (t >= 16) {
- W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
- }
- tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t);
- e = d; d = c; c = S(30, b); b = a; a = tmp;
- }
- for (t = 20; t < 40; t++) {
- s = t & 0x0f;
- W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
- tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t);
- e = d; d = c; c = S(30, b); b = a; a = tmp;
- }
- for (t = 40; t < 60; t++) {
- s = t & 0x0f;
- W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
- tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t);
- e = d; d = c; c = S(30, b); b = a; a = tmp;
- }
- for (t = 60; t < 80; t++) {
- s = t & 0x0f;
- W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));
- tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t);
- e = d; d = c; c = S(30, b); b = a; a = tmp;
- }
-
- H(0) = H(0) + a;
- H(1) = H(1) + b;
- H(2) = H(2) + c;
- H(3) = H(3) + d;
- H(4) = H(4) + e;
-
- bzero(&ctxt->m.b8[0], 64);
-}
-
-/*------------------------------------------------------------*/
-
-void
-sha1_init(ctxt)
- struct sha1_ctxt *ctxt;
-{
- bzero(ctxt, sizeof(struct sha1_ctxt));
- H(0) = 0x67452301;
- H(1) = 0xefcdab89;
- H(2) = 0x98badcfe;
- H(3) = 0x10325476;
- H(4) = 0xc3d2e1f0;
-}
-
-void
-sha1_pad(ctxt)
- struct sha1_ctxt *ctxt;
-{
- size_t padlen; /*pad length in bytes*/
- size_t padstart;
-
- PUTPAD(0x80);
-
- padstart = COUNT % 64;
- padlen = 64 - padstart;
- if (padlen < 8) {
- bzero(&ctxt->m.b8[padstart], padlen);
- COUNT += padlen;
- COUNT %= 64;
- sha1_step(ctxt);
- padstart = COUNT % 64; /* should be 0 */
- padlen = 64 - padstart; /* should be 64 */
- }
- bzero(&ctxt->m.b8[padstart], padlen - 8);
- COUNT += (padlen - 8);
- COUNT %= 64;
-#if BYTE_ORDER == BIG_ENDIAN
- PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]);
- PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]);
- PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]);
- PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]);
-#else
- PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]);
- PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]);
- PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]);
- PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]);
-#endif
-}
-
-void
-sha1_loop(ctxt, input, len)
- struct sha1_ctxt *ctxt;
- const u_int8_t *input;
- size_t len;
-{
- size_t gaplen;
- size_t gapstart;
- size_t off;
- size_t copysiz;
-
- off = 0;
-
- while (off < len) {
- gapstart = COUNT % 64;
- gaplen = 64 - gapstart;
-
- copysiz = (gaplen < len - off) ? gaplen : len - off;
- bcopy(&input[off], &ctxt->m.b8[gapstart], copysiz);
- COUNT += copysiz;
- COUNT %= 64;
- ctxt->c.b64[0] += copysiz * 8;
- if (COUNT % 64 == 0)
- sha1_step(ctxt);
- off += copysiz;
- }
-}
-
-void
-sha1_result(ctxt, digest0)
- struct sha1_ctxt *ctxt;
- caddr_t digest0;
-{
- u_int8_t *digest;
-
- digest = (u_int8_t *)digest0;
- sha1_pad(ctxt);
-#if BYTE_ORDER == BIG_ENDIAN
- bcopy(&ctxt->h.b8[0], digest, 20);
-#else
- digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2];
- digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0];
- digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6];
- digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4];
- digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10];
- digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8];
- digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14];
- digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12];
- digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18];
- digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16];
-#endif
-}
-
-#endif /*unsupported*/
projects / openwrt / svn-archive / archive.git / blobdiff