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c1cef27bda
Remove MD5 and SHA1 options (both are now always on). Rename functions to be lutil_ instead of ldap_. Create --enable-cleartext option. Default is currently 'on'.
277 lines
7.6 KiB
C
277 lines
7.6 KiB
C
/* Acquired from:
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* $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */
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/*
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* SHA-1 in C
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* By Steve Reid <steve@edmweb.com>
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* 100% Public Domain
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*
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* Test Vectors (from FIPS PUB 180-1)
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* "abc"
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* A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
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* "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
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* 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
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* A million repetitions of "a"
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* 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
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*/
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#include "portable.h"
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#include <ac/string.h>
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/* include socket.h to get sys/types.h and/or winsock2.h */
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#include <ac/socket.h>
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#if defined(HAVE_SYS_PARAM_H)
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#include <sys/param.h>
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#endif
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#include "lutil_sha1.h"
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#define SHA1HANDSOFF /* Copies data before messing with it. */
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#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
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/*
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* blk0() and blk() perform the initial expand.
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* I got the idea of expanding during the round function from SSLeay
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*/
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#if BYTE_ORDER == LITTLE_ENDIAN
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# define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
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|(rol(block->l[i],8)&0x00FF00FF))
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#else
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# define blk0(i) block->l[i]
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#endif
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#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
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^block->l[(i+2)&15]^block->l[i&15],1))
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/*
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* (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
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*/
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#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
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#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
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#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
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#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
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#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
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/*
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* Hash a single 512-bit block. This is the core of the algorithm.
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*/
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void
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lutil_SHA1Transform( uint32 *state, const unsigned char *buffer )
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{
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uint32 a, b, c, d, e;
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typedef union {
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unsigned char c[64];
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u_int l[16];
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} CHAR64LONG16;
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CHAR64LONG16 *block;
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#ifdef SHA1HANDSOFF
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static unsigned char workspace[64];
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block = (CHAR64LONG16 *)workspace;
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(void)memcpy(block, buffer, 64);
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#else
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block = (CHAR64LONG16 *)buffer;
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#endif
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/* Copy context->state[] to working vars */
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a = state[0];
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b = state[1];
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c = state[2];
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d = state[3];
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e = state[4];
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/* 4 rounds of 20 operations each. Loop unrolled. */
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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/* Add the working vars back into context.state[] */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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state[4] += e;
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/* Wipe variables */
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a = b = c = d = e = 0;
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}
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/*
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* lutil_SHA1Init - Initialize new context
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*/
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void
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lutil_SHA1Init( lutil_SHA1_CTX *context )
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{
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/* SHA1 initialization constants */
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context->state[0] = 0x67452301;
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context->state[1] = 0xEFCDAB89;
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context->state[2] = 0x98BADCFE;
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context->state[3] = 0x10325476;
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context->state[4] = 0xC3D2E1F0;
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context->count[0] = context->count[1] = 0;
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}
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/*
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* Run your data through this.
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*/
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void
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lutil_SHA1Update(
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lutil_SHA1_CTX *context,
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const unsigned char *data,
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u_int len
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)
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{
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u_int i, j;
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j = context->count[0];
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if ((context->count[0] += len << 3) < j)
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context->count[1] += (len>>29)+1;
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j = (j >> 3) & 63;
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if ((j + len) > 63) {
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(void)memcpy(&context->buffer[j], data, (i = 64-j));
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lutil_SHA1Transform(context->state, context->buffer);
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for ( ; i + 63 < len; i += 64)
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lutil_SHA1Transform(context->state, &data[i]);
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j = 0;
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} else {
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i = 0;
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}
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(void)memcpy(&context->buffer[j], &data[i], len - i);
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}
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/*
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* Add padding and return the message digest.
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*/
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void
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lutil_SHA1Final( unsigned char *digest, lutil_SHA1_CTX *context )
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{
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u_int i;
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unsigned char finalcount[8];
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for (i = 0; i < 8; i++) {
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finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
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>> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
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}
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lutil_SHA1Update(context, (unsigned char *)"\200", 1);
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while ((context->count[0] & 504) != 448)
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lutil_SHA1Update(context, (unsigned char *)"\0", 1);
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lutil_SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
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if (digest) {
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for (i = 0; i < 20; i++)
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digest[i] = (unsigned char)
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((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
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}
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}
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/* sha1hl.c
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char rcsid[] = "$OpenBSD: sha1hl.c,v 1.1 1997/07/12 20:06:03 millert Exp $";
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#endif /* LIBC_SCCS and not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <ac/errno.h>
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#include <ac/unistd.h>
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#ifdef HAVE_SYS_FILE_H
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#include <sys/file.h>
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#endif
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#ifdef HAVE_SYS_UIO_H
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#include <sys/uio.h>
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#endif
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#ifdef HAVE_IO_H
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#include <io.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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/* ARGSUSED */
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char *
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lutil_SHA1End( lutil_SHA1_CTX *ctx, char *buf )
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{
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int i;
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char *p = buf;
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unsigned char digest[20];
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static const char hex[]="0123456789abcdef";
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if (p == NULL && (p = malloc(41)) == NULL)
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return 0;
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lutil_SHA1Final(digest,ctx);
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for (i = 0; i < 20; i++) {
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p[i + i] = hex[digest[i] >> 4];
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p[i + i + 1] = hex[digest[i] & 0x0f];
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}
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p[i + i] = '\0';
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return(p);
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}
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char *
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lutil_SHA1File( char *filename, char *buf )
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{
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unsigned char buffer[BUFSIZ];
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lutil_SHA1_CTX ctx;
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int fd, num, oerrno;
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lutil_SHA1Init(&ctx);
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if ((fd = open(filename,O_RDONLY)) < 0)
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return(0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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lutil_SHA1Update(&ctx, buffer, num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return(num < 0 ? 0 : lutil_SHA1End(&ctx, buf));
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}
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char *
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lutil_SHA1Data( const unsigned char *data, size_t len, char *buf )
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{
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lutil_SHA1_CTX ctx;
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lutil_SHA1Init(&ctx);
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lutil_SHA1Update(&ctx, data, len);
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return(lutil_SHA1End(&ctx, buf));
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}
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