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Diffstat (limited to 'libraries/liblutil/sha1.c')
| -rw-r--r-- | libraries/liblutil/sha1.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/libraries/liblutil/sha1.c b/libraries/liblutil/sha1.c new file mode 100644 index 0000000..ae153c2 --- /dev/null +++ b/libraries/liblutil/sha1.c @@ -0,0 +1,288 @@ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2021 The OpenLDAP Foundation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted only as authorized by the OpenLDAP + * Public License. + * + * A copy of this license is available in the file LICENSE in the + * top-level directory of the distribution or, alternatively, at + * <http://www.OpenLDAP.org/license.html>. + */ +/* This work was derived from code developed by Steve Reid and + * adapted for use in OpenLDAP by Kurt D. Zeilenga. + */ + + +/* Acquired from: + * $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */ +/* + * 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 + */ +/* + * This code assumes uint32 is 32 bits and char is 8 bits + */ + +#include "portable.h" +#include <ac/param.h> +#include <ac/string.h> +#include <ac/socket.h> +#include <ac/bytes.h> + +#include "lutil_sha1.h" + +#ifdef LUTIL_SHA1_BYTES + +/* undefining this will cause pointer alignment errors */ +#define SHA1HANDSOFF /* Copies data before messing with it. */ +#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 BYTE_ORDER == LITTLE_ENDIAN +# define blk0(i) (block[i] = (rol(block[i],24)&0xFF00FF00) \ + |(rol(block[i],8)&0x00FF00FF)) +#else +# define blk0(i) block[i] +#endif +#define blk(i) (block[i&15] = rol(block[(i+13)&15]^block[(i+8)&15] \ + ^block[(i+2)&15]^block[i&15],1)) + +/* + * (R0+R1), R2, R3, R4 are the different operations (rounds) 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. + */ +void +lutil_SHA1Transform( uint32 *state, const unsigned char *buffer ) +{ + uint32 a, b, c, d, e; + +#ifdef SHA1HANDSOFF + uint32 block[16]; + (void)AC_MEMCPY(block, buffer, 64); +#else + uint32 *block = (u_int32 *) 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; +} + + +/* + * lutil_SHA1Init - Initialize new context + */ +void +lutil_SHA1Init( lutil_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 +lutil_SHA1Update( + lutil_SHA1_CTX *context, + const unsigned char *data, + uint32 len +) +{ + u_int i, j; + + j = context->count[0]; + if ((context->count[0] += len << 3) < j) + context->count[1] += (len>>29)+1; + j = (j >> 3) & 63; + if ((j + len) > 63) { + (void)AC_MEMCPY(&context->buffer[j], data, (i = 64-j)); + lutil_SHA1Transform(context->state, context->buffer); + for ( ; i + 63 < len; i += 64) + lutil_SHA1Transform(context->state, &data[i]); + j = 0; + } else { + i = 0; + } + (void)AC_MEMCPY(&context->buffer[j], &data[i], len - i); +} + + +/* + * Add padding and return the message digest. + */ +void +lutil_SHA1Final( unsigned char *digest, lutil_SHA1_CTX *context ) +{ + u_int i; + 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 */ + } + lutil_SHA1Update(context, (unsigned char *)"\200", 1); + while ((context->count[0] & 504) != 448) + lutil_SHA1Update(context, (unsigned char *)"\0", 1); + lutil_SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */ + + if (digest) { + for (i = 0; i < 20; i++) + digest[i] = (unsigned char) + ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255); + } +} + + +/* sha1hl.c + * ---------------------------------------------------------------------------- + * "THE BEER-WARE LICENSE" (Revision 42): + * <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you + * can do whatever you want with this stuff. If we meet some day, and you think + * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp + * ---------------------------------------------------------------------------- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char rcsid[] = "$OpenBSD: sha1hl.c,v 1.1 1997/07/12 20:06:03 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <stdio.h> +#include <ac/stdlib.h> + +#include <ac/errno.h> +#include <ac/unistd.h> + +#ifdef HAVE_SYS_FILE_H +#include <sys/file.h> +#endif + +#ifdef HAVE_IO_H +#include <io.h> +#endif + +#ifdef HAVE_FCNTL_H +#include <fcntl.h> +#endif + + +/* ARGSUSED */ +char * +lutil_SHA1End( lutil_SHA1_CTX *ctx, char *buf ) +{ + int i; + char *p = buf; + unsigned char digest[20]; + static const char hex[]="0123456789abcdef"; + + if (p == NULL && (p = malloc(41)) == NULL) + return 0; + + lutil_SHA1Final(digest,ctx); + for (i = 0; i < 20; i++) { + p[i + i] = hex[digest[i] >> 4]; + p[i + i + 1] = hex[digest[i] & 0x0f]; + } + p[i + i] = '\0'; + return(p); +} + +char * +lutil_SHA1File( char *filename, char *buf ) +{ + unsigned char buffer[BUFSIZ]; + lutil_SHA1_CTX ctx; + int fd, num, oerrno; + + lutil_SHA1Init(&ctx); + + if ((fd = open(filename,O_RDONLY)) < 0) + return(0); + + while ((num = read(fd, buffer, sizeof(buffer))) > 0) + lutil_SHA1Update(&ctx, buffer, num); + + oerrno = errno; + close(fd); + errno = oerrno; + return(num < 0 ? 0 : lutil_SHA1End(&ctx, buf)); +} + +char * +lutil_SHA1Data( const unsigned char *data, size_t len, char *buf ) +{ + lutil_SHA1_CTX ctx; + + lutil_SHA1Init(&ctx); + lutil_SHA1Update(&ctx, data, len); + return(lutil_SHA1End(&ctx, buf)); +} + +#endif |