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Diffstat (limited to 'kopete/protocols/msn/sha1.cpp')
| -rw-r--r-- | kopete/protocols/msn/sha1.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/kopete/protocols/msn/sha1.cpp b/kopete/protocols/msn/sha1.cpp new file mode 100644 index 00000000..84ad13ad --- /dev/null +++ b/kopete/protocols/msn/sha1.cpp @@ -0,0 +1,192 @@ +/* + * sha1.cpp - Secure Hash Algorithm 1 + * Copyright (C) 2003 Justin Karneges + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include"sha1.h" + +/**************************************************************************** + SHA1 - from a public domain implementation by Steve Reid (steve@edmweb.com) +****************************************************************************/ + +#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) +#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); + + +SHA1::SHA1() +{ + int wordSize; + + qSysInfo(&wordSize, &bigEndian); +} + +unsigned long SHA1::blk0(Q_UINT32 i) +{ + if(bigEndian) + return block->l[i]; + else + return (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) | (rol(block->l[i],8)&0x00FF00FF)); +} + +// Hash a single 512-bit block. This is the core of the algorithm. +void SHA1::transform(Q_UINT32 state[5], unsigned char buffer[64]) +{ + Q_UINT32 a, b, c, d, e; + + block = (CHAR64LONG16*)buffer; + + // 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_CONTEXT* 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_CONTEXT* context, unsigned char* data, Q_UINT32 len) +{ + Q_UINT32 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)); + transform(context->state, context->buffer); + for ( ; i + 63 < len; i += 64) { + 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_CONTEXT* context) +{ + Q_UINT32 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 + } + update(context, (unsigned char *)"\200", 1); + while ((context->count[0] & 504) != 448) { + update(context, (unsigned char *)"\0", 1); + } + update(context, finalcount, 8); // Should cause a transform() + 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); +} + +QByteArray SHA1::hash(const QByteArray &a) +{ + SHA1_CONTEXT context; + QByteArray b(20); + + SHA1 s; + s.init(&context); + s.update(&context, (unsigned char *)a.data(), (unsigned int)a.size()); + s.final((unsigned char *)b.data(), &context); + return b; +} + +QByteArray SHA1::hashString(const QCString &cs) +{ + QByteArray a(cs.length()); + memcpy(a.data(), cs.data(), a.size()); + return SHA1::hash(a); +} + +QString SHA1::digest(const QString &in) +{ + QByteArray a = SHA1::hashString(in.utf8()); + QString out; + for(int n = 0; n < (int)a.size(); ++n) { + QString str; + str.sprintf("%02x", (uchar)a[n]); + out.append(str); + } + + return out; +} |