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| author | Vincent Richard <[email protected]> | 2013-12-29 10:02:12 +0100 |
|---|---|---|
| committer | Vincent Richard <[email protected]> | 2013-12-29 10:02:12 +0100 |
| commit | 152c6bed75598a6ca5efb7914701157270155833 (patch) | |
| tree | 8faced1d75a45c819630323da256248415992ed0 /src/security/digest/sha1/sha1MessageDigest.cpp | |
| parent | Merge branch 'master' of https://github.com/kisli/vmime (diff) | |
| download | vmime-152c6bed75598a6ca5efb7914701157270155833.tar.gz vmime-152c6bed75598a6ca5efb7914701157270155833.zip | |
Merged source and header files in directory structure. Got rid of SConstruct build.
Diffstat (limited to 'src/security/digest/sha1/sha1MessageDigest.cpp')
| -rw-r--r-- | src/security/digest/sha1/sha1MessageDigest.cpp | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/src/security/digest/sha1/sha1MessageDigest.cpp b/src/security/digest/sha1/sha1MessageDigest.cpp deleted file mode 100644 index aa055af5..00000000 --- a/src/security/digest/sha1/sha1MessageDigest.cpp +++ /dev/null @@ -1,271 +0,0 @@ -// -// VMime library (http://www.vmime.org) -// Copyright (C) 2002-2013 Vincent Richard <[email protected]> -// -// This program is free software; you can redistribute it and/or -// modify it under the terms of the GNU General Public License as -// published by the Free Software Foundation; either version 3 of -// the License, or (at your option) any later version. -// -// This program 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 -// General Public License for more details. -// -// You should have received a copy of the GNU General Public License along -// with this program; if not, write to the Free Software Foundation, Inc., -// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -// -// Linking this library statically or dynamically with other modules is making -// a combined work based on this library. Thus, the terms and conditions of -// the GNU General Public License cover the whole combination. -// -// -// This is an implementation by Steve Reid <[email protected]> -// 100% public domain. - -#include "vmime/security/digest/sha1/sha1MessageDigest.hpp" - -#include <cstring> -#include <cassert> - - -namespace vmime { -namespace security { -namespace digest { -namespace sha1 { - - -#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 VMIME_BYTE_ORDER_LITTLE_ENDIAN - #define blk0(i) (block->l[i] = (rol(block->l[i], 24) & 0xFF00FF00) \ - | (rol(block->l[i], 8) & 0x00FF00FF)) -#else - #define blk0(i) block->l[i] -#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); - - -sha1MessageDigest::sha1MessageDigest() -{ - init(); -} - - -void sha1MessageDigest::reset() -{ - init(); -} - - -void sha1MessageDigest::init() -{ - m_state[0] = 0x67452301; - m_state[1] = 0xefcdab89; - m_state[2] = 0x98badcfe; - m_state[3] = 0x10325476; - m_state[4] = 0xc3d2e1f0; - - m_count[0] = 0; - m_count[1] = 0; -} - - -void sha1MessageDigest::update(const byte_t b) -{ - update(&b, 1); -} - - -void sha1MessageDigest::update(const string& s) -{ - update(reinterpret_cast <const byte_t*>(s.data()), s.length()); -} - - -void sha1MessageDigest::update(const byte_t* buffer, const size_t offset, - const unsigned long len) -{ - update(buffer + offset, len); -} - - -void sha1MessageDigest::update(const byte_t* buffer, const size_t len) -{ - unsigned int i, j; - - j = (m_count[0] >> 3) & 63; - - if ((m_count[0] += static_cast <unsigned int>(len << 3)) < static_cast <unsigned int>(len << 3)) - m_count[1]++; - - m_count[1] += static_cast <unsigned int>(len >> 29); - - if ((j + len) > 63) - { - memcpy(&m_buffer[j], buffer, (i = 64 - j)); - - transform(m_state, m_buffer); - - for ( ; i + 63 < len ; i += 64) - transform(m_state, &buffer[i]); - - j = 0; - } - else - { - i = 0; - } - - std::memcpy(&m_buffer[j], &buffer[i], len - i); -} - - -void sha1MessageDigest::finalize() -{ - unsigned int i, j; - unsigned char finalcount[8]; - - for (i = 0 ; i < 8 ; i++) - { - finalcount[i] = static_cast <unsigned char> - ((m_count[(i >= 4 ? 0 : 1)] - >> ((3-(i & 3)) * 8) ) & 255); // Endian independent - } - - update(reinterpret_cast <const byte_t*>("\200"), 1); - - while ((m_count[0] & 504) != 448) - update(reinterpret_cast <const byte_t*>("\0"), 1); - - update(finalcount, 8); // Should cause a transform() - - for (i = 0 ; i < 20 ; i++) - { - m_digest[i] = static_cast <unsigned char> - ((m_state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255); - } - - // Wipe variables - i = j = 0; - - std::memset(m_buffer, 0, 64); - std::memset(m_state, 0, 5 * sizeof(unsigned int)); - std::memset(m_count, 0, 2 * sizeof(unsigned int)); - std::memset(&finalcount, 0, 8); -} - - -void sha1MessageDigest::finalize(const string& s) -{ - finalize(reinterpret_cast <const byte_t*>(s.data()), s.length()); -} - - -void sha1MessageDigest::finalize(const byte_t* buffer, const size_t len) -{ - update(buffer, len); - finalize(); -} - - -void sha1MessageDigest::finalize(const byte_t* buffer, - const size_t offset, const size_t len) -{ - finalize(buffer + offset, len); -} - - -/** Hash a single 512-bit block. - * This is the core of the algorithm. - */ -void sha1MessageDigest::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; - - assert(sizeof(unsigned int) == 4); - - CHAR64LONG16* block; - static unsigned char workspace[64]; - - block = reinterpret_cast <CHAR64LONG16*>(workspace); - memcpy(block, buffer, 64); - - // 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; -} - - -size_t sha1MessageDigest::getDigestLength() const -{ - return 20; -} - - -const byte_t* sha1MessageDigest::getDigest() const -{ - return m_digest; -} - - -} // sha1 -} // digest -} // security -} // vmime - - |
