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197 lines
6.2 KiB
197 lines
6.2 KiB
/*
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* sha1.cpp - Secure Hash Algorithm 1
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* Copyright (C) 2003 Justin Karneges
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include"sha1.h"
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// CS_NAMESPACE_BEGIN
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/****************************************************************************
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SHA1 - from a public domain implementation by Steve Reid (steve@edmweb.com)
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****************************************************************************/
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#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
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#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))
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/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
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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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SHA1::SHA1()
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{
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int wordSize;
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tqSysInfo(&wordSize, &bigEndian);
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}
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unsigned long SHA1::blk0(TQ_UINT32 i)
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{
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if(bigEndian)
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return block->l[i];
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else
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return (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) | (rol(block->l[i],8)&0x00FF00FF));
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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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void SHA1::transform(TQ_UINT32 state[5], unsigned char buffer[64])
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{
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TQ_UINT32 a, b, c, d, e;
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block = (CHAR64LONG16*)buffer;
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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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// SHA1Init - Initialize new context
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void SHA1::init(SHA1_CONTEXT* 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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// Run your data through this
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void SHA1::update(SHA1_CONTEXT* context, unsigned char* data, TQ_UINT32 len)
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{
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TQ_UINT32 i, j;
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j = (context->count[0] >> 3) & 63;
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if((context->count[0] += len << 3) < (len << 3))
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context->count[1]++;
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context->count[1] += (len >> 29);
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if((j + len) > 63) {
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memcpy(&context->buffer[j], data, (i = 64-j));
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transform(context->state, context->buffer);
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for ( ; i + 63 < len; i += 64) {
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transform(context->state, &data[i]);
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}
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j = 0;
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}
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else i = 0;
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memcpy(&context->buffer[j], &data[i], len - i);
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}
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// Add padding and return the message digest
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void SHA1::final(unsigned char digest[20], SHA1_CONTEXT* context)
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{
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TQ_UINT32 i, j;
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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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update(context, (unsigned char *)"\200", 1);
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while ((context->count[0] & 504) != 448) {
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update(context, (unsigned char *)"\0", 1);
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}
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update(context, finalcount, 8); // Should cause a transform()
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for (i = 0; i < 20; i++) {
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digest[i] = (unsigned char) ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
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}
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// Wipe variables
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i = j = 0;
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memset(context->buffer, 0, 64);
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memset(context->state, 0, 20);
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memset(context->count, 0, 8);
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memset(&finalcount, 0, 8);
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}
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TQByteArray SHA1::hash(const TQByteArray &a)
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{
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SHA1_CONTEXT context;
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TQByteArray b(20);
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SHA1 s;
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s.init(&context);
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s.update(&context, (unsigned char *)a.data(), (unsigned int)a.size());
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s.final((unsigned char *)b.data(), &context);
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return b;
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}
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TQByteArray SHA1::hashString(const TQCString &cs)
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{
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TQByteArray a(cs.length());
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memcpy(a.data(), cs.data(), a.size());
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return SHA1::hash(a);
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}
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TQString SHA1::digest(const TQString &in)
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{
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TQByteArray a = SHA1::hashString(in.utf8());
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TQString out;
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for(int n = 0; n < (int)a.size(); ++n) {
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TQString str;
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str.sprintf("%02x", (uchar)a[n]);
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out.append(str);
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}
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return out;
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}
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// CS_NAMESPACE_END
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