+++ /dev/null
-/*
- * ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c
- *
- * SHA-1 in C
- * By Steve Reid <steve@edmweb.com>
- * 100% Public Domain
- *
- * Test Vectors (from FIPS PUB 180-1)
- * "abc"
- * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
- * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
- * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
- * A million repetitions of "a"
- * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
- */
-
-/* #define SHA1HANDSOFF * Copies data before messing with it. */
-
-#if defined(__linux__)
-#include <asm/byteorder.h>
-#include <linux/string.h>
-#elif defined(__solaris__)
-#include <sys/isa_defs.h>
-#include <sys/ddi.h>
-#include <sys/sunddi.h>
-#define memcpy(d, s, c) bcopy(s, d, c)
-#define memset(d, b, c) bzero(d, c)
-#endif
-
-#include "sha1.h"
-
-static void SHA1_Transform(unsigned int[5], const unsigned char[64]);
-
-#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
-
-/* blk0() and blk() perform the initial expand. */
-/* I got the idea of expanding during the round function from SSLeay */
-#if defined(__LITTLE_ENDIAN) || defined(_LITTLE_ENDIAN)
-#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
- |(rol(block->l[i],8)&0x00FF00FF))
-#elif defined(__BIG_ENDIAN) || defined(_BIG_ENDIAN)
-#define blk0(i) block->l[i]
-#else
-#error Endianness not defined
-#endif
-#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
- ^block->l[(i+2)&15]^block->l[i&15],1))
-
-/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
-#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
-#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
-#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
-
-
-/* Hash a single 512-bit block. This is the core of the algorithm. */
-
-static void
-SHA1_Transform(unsigned int state[5], const unsigned char buffer[64])
-{
- unsigned int a, b, c, d, e;
- typedef union {
- unsigned char c[64];
- unsigned int l[16];
- } CHAR64LONG16;
- CHAR64LONG16 *block;
-
-#ifdef SHA1HANDSOFF
- static unsigned char workspace[64];
- block = (CHAR64LONG16 *) workspace;
- memcpy(block, buffer, 64);
-#else
- block = (CHAR64LONG16 *) buffer;
-#endif
- /* Copy context->state[] to working vars */
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- e = state[4];
- /* 4 rounds of 20 operations each. Loop unrolled. */
- R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
- R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
- R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
- R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
- R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
- R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
- R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
- R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
- R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
- R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
- R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
- R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
- R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
- R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
- R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
- R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
- R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
- R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
- R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
- R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
- /* Add the working vars back into context.state[] */
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
- /* Wipe variables */
- a = b = c = d = e = 0;
-}
-
-
-/* SHA1Init - Initialize new context */
-
-void
-SHA1_Init(SHA1_CTX *context)
-{
- /* SHA1 initialization constants */
- context->state[0] = 0x67452301;
- context->state[1] = 0xEFCDAB89;
- context->state[2] = 0x98BADCFE;
- context->state[3] = 0x10325476;
- context->state[4] = 0xC3D2E1F0;
- context->count[0] = context->count[1] = 0;
-}
-
-
-/* Run your data through this. */
-
-void
-SHA1_Update(SHA1_CTX *context, const unsigned char *data, unsigned int len)
-{
- unsigned int i, j;
-
- j = (context->count[0] >> 3) & 63;
- if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
- context->count[1] += (len >> 29);
- if ((j + len) > 63) {
- memcpy(&context->buffer[j], data, (i = 64-j));
- SHA1_Transform(context->state, context->buffer);
- for ( ; i + 63 < len; i += 64) {
- SHA1_Transform(context->state, &data[i]);
- }
- j = 0;
- }
- else
- i = 0;
-
- memcpy(&context->buffer[j], &data[i], len - i);
-}
-
-
-/* Add padding and return the message digest. */
-
-void
-SHA1_Final(unsigned char digest[20], SHA1_CTX *context)
-{
- unsigned int i, j;
- unsigned char finalcount[8];
-
- for (i = 0; i < 8; i++) {
- finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
- >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
- }
- SHA1_Update(context, (unsigned char *) "\200", 1);
- while ((context->count[0] & 504) != 448) {
- SHA1_Update(context, (unsigned char *) "\0", 1);
- }
- SHA1_Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
- for (i = 0; i < 20; i++) {
- digest[i] = (unsigned char)
- ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
- }
- /* Wipe variables */
- i = j = 0;
- memset(context->buffer, 0, 64);
- memset(context->state, 0, 20);
- memset(context->count, 0, 8);
- memset(&finalcount, 0, 8);
-#ifdef SHA1HANDSOFF /* make SHA1Transform overwrite it's own static vars */
- SHA1Transform(context->state, context->buffer);
-#endif
-}
-
projects / ppp.git / blobdiff