diff options
Diffstat (limited to 'Swiften/StringCodecs/SHA256.cpp')
-rw-r--r-- | Swiften/StringCodecs/SHA256.cpp | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/Swiften/StringCodecs/SHA256.cpp b/Swiften/StringCodecs/SHA256.cpp deleted file mode 100644 index 6e3c4ec..0000000 --- a/Swiften/StringCodecs/SHA256.cpp +++ /dev/null @@ -1,378 +0,0 @@ -/* - * Copyright (c) 2011 Remko Tronçon - * Licensed under the GNU General Public License v3. - * See Documentation/Licenses/GPLv3.txt for more information. - */ - -#include <Swiften/StringCodecs/SHA256.h> - -#include <cassert> -#include <algorithm> -#include <string.h> - -#pragma GCC diagnostic ignored "-Wold-style-cast" -#pragma clang diagnostic ignored "-Wconversion" -#pragma clang diagnostic ignored "-Wunused-macros" -#pragma clang diagnostic ignored "-Wdisabled-macro-expansion" - -using namespace Swift; - -// Copied & adapted from LibTomCrypt, by Tom St Denis, tomstdenis@gmail.com, http://libtom.org -// Substituted some macros by the platform-independent (slower) variants - -#include <stdlib.h> - -#define CRYPT_OK 0 -#define CRYPT_INVALID_ARG -1 -#define LTC_ARGCHK assert - -#define ROR(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) -#define RORc(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL) - -#define LOAD32H(x, y) \ - { x = ((unsigned long)((y)[0] & 255)<<24) | \ - ((unsigned long)((y)[1] & 255)<<16) | \ - ((unsigned long)((y)[2] & 255)<<8) | \ - ((unsigned long)((y)[3] & 255)); } - -#define STORE32H(x, y) \ - { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255); \ - (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); } - -#define STORE64H(x, y) \ - { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \ - (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \ - (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \ - (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); } - -/* a simple macro for making hash "process" functions */ -#define HASH_PROCESS(func_name, compress_name, state_var, block_size) \ -int func_name (State * md, const unsigned char *in, unsigned int inlen) \ -{ \ - unsigned long n; \ - int err; \ - LTC_ARGCHK(md != NULL); \ - LTC_ARGCHK(in != NULL || inlen == 0); \ - if (md-> curlen > sizeof(md->buf)) { \ - return CRYPT_INVALID_ARG; \ - } \ - while (inlen > 0) { \ - if (md->curlen == 0 && inlen >= block_size) { \ - if ((err = compress_name (md, (unsigned char *)in)) != CRYPT_OK) { \ - return err; \ - } \ - md-> length += block_size * 8; \ - in += block_size; \ - inlen -= block_size; \ - } else { \ - n = std::min(inlen, (block_size - md-> curlen)); \ - memcpy(md-> buf + md-> curlen, in, (size_t)n); \ - md-> curlen += n; \ - in += n; \ - inlen -= n; \ - if (md-> curlen == block_size) { \ - if ((err = compress_name (md, md-> buf)) != CRYPT_OK) { \ - return err; \ - } \ - md-> length += 8*block_size; \ - md-> curlen = 0; \ - } \ - } \ - } \ - return CRYPT_OK; \ -} - -#ifdef LTC_SMALL_CODE -/* the K array */ -static const boost::uint32_t K[64] = { - 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL, - 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL, - 0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, - 0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL, - 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL, - 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL, - 0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, - 0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL, - 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL, - 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL, - 0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, - 0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL, - 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL -}; -#endif - -/* Various logical functions */ -#define Ch(x,y,z) (z ^ (x & (y ^ z))) -#define Maj(x,y,z) (((x | y) & z) | (x & y)) -#define S(x, n) RORc((x),(n)) -#define R(x, n) (((x)&0xFFFFFFFFUL)>>(n)) -#define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22)) -#define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25)) -#define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3)) -#define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10)) - -#ifdef LTC_CLEAN_STACK -int SHA256::_compress(State * md, unsigned char *buf) -#else -int SHA256::compress(State * md, unsigned char *buf) -#endif -{ - boost::uint32_t S[8], W[64], t0, t1; -#ifdef LTC_SMALL_CODE - boost::uint32_t t; -#endif - int i; - - /* copy state into S */ - for (i = 0; i < 8; i++) { - S[i] = md->state[i]; - } - - /* copy the state into 512-bits into W[0..15] */ - for (i = 0; i < 16; i++) { - LOAD32H(W[i], buf + (4*i)); - } - - /* fill W[16..63] */ - for (i = 16; i < 64; i++) { - W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16]; - } - - /* Compress */ -#ifdef LTC_SMALL_CODE -#define RND(a,b,c,d,e,f,g,h,i) \ - t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \ - t1 = Sigma0(a) + Maj(a, b, c); \ - d += t0; \ - h = t0 + t1; - - for (i = 0; i < 64; ++i) { - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i); - t = S[7]; S[7] = S[6]; S[6] = S[5]; S[5] = S[4]; - S[4] = S[3]; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t; - } -#else -#define RND(a,b,c,d,e,f,g,h,i,ki) \ - t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \ - t1 = Sigma0(a) + Maj(a, b, c); \ - d += t0; \ - h = t0 + t1; - - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x71374491); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcf); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba5); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25b); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b01); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a7); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c1); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc6); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dc); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c8); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf3); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x14292967); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a85); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b2138); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d13); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a7354); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c85); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a1); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664b); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a3); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd6990624); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e3585); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa070); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c08); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774c); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4a); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3); - RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee); - RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f); - RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814); - RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc70208); - RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa); - RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506ceb); - RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7); - RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2); - -#undef RND - -#endif - - /* feedback */ - for (i = 0; i < 8; i++) { - md->state[i] = md->state[i] + S[i]; - } - return CRYPT_OK; -} - -#ifdef LTC_CLEAN_STACK -int SHA256::compress(State * md, unsigned char *buf) -{ - int err; - err = SHA256::_compress(md, buf); - burn_stack(sizeof(boost::uint32_t) * 74); - return err; -} -#endif - -/** - Initialize the hash state - @param md The hash state you wish to initialize - @return CRYPT_OK if successful -*/ -int SHA256::init(State * md) -{ - LTC_ARGCHK(md != NULL); - - md->curlen = 0; - md->length = 0; - md->state[0] = 0x6A09E667UL; - md->state[1] = 0xBB67AE85UL; - md->state[2] = 0x3C6EF372UL; - md->state[3] = 0xA54FF53AUL; - md->state[4] = 0x510E527FUL; - md->state[5] = 0x9B05688CUL; - md->state[6] = 0x1F83D9ABUL; - md->state[7] = 0x5BE0CD19UL; - return CRYPT_OK; -} - -/** - Process a block of memory though the hash - @param md The hash state - @param in The data to hash - @param inlen The length of the data (octets) - @return CRYPT_OK if successful -*/ -HASH_PROCESS(SHA256::process, SHA256::compress, sha256, 64) - -/** - Terminate the hash to get the digest - @param md The hash state - @param out [out] The destination of the hash (32 bytes) - @return CRYPT_OK if successful -*/ -int SHA256::done(State * md, unsigned char *out) -{ - int i; - - LTC_ARGCHK(md != NULL); - LTC_ARGCHK(out != NULL); - - if (md->curlen >= sizeof(md->buf)) { - return CRYPT_INVALID_ARG; - } - - - /* increase the length of the message */ - md->length += md->curlen * 8; - - /* append the '1' bit */ - md->buf[md->curlen++] = (unsigned char)0x80; - - /* if the length is currently above 56 bytes we append zeros - * then compress. Then we can fall back to padding zeros and length - * encoding like normal. - */ - if (md->curlen > 56) { - while (md->curlen < 64) { - md->buf[md->curlen++] = (unsigned char)0; - } - SHA256::compress(md, md->buf); - md->curlen = 0; - } - - /* pad upto 56 bytes of zeroes */ - while (md->curlen < 56) { - md->buf[md->curlen++] = (unsigned char)0; - } - - /* store length */ - STORE64H(md->length, md->buf+56); - SHA256::compress(md, md->buf); - - /* copy output */ - for (i = 0; i < 8; i++) { - STORE32H(md->state[i], out+(4*i)); - } -#ifdef LTC_CLEAN_STACK - zeromem(md, sizeof(State)); -#endif - return CRYPT_OK; -} - -// End copied code - -namespace Swift { - -SHA256::SHA256() { - init(&state); -} - -SHA256& SHA256::update(const std::vector<unsigned char>& input) { - std::vector<unsigned char> inputCopy(input); - process(&state, (boost::uint8_t*) vecptr(inputCopy), inputCopy.size()); - return *this; -} - -std::vector<unsigned char> SHA256::getHash() const { - std::vector<unsigned char> digest; - digest.resize(256/8); - State contextCopy(state); - done(&contextCopy, (boost::uint8_t*) vecptr(digest)); - return digest; -} - -template<typename Container> -ByteArray SHA256::getHashInternal(const Container& input) { - State context; - init(&context); - - Container inputCopy(input); - process(&context, (boost::uint8_t*) vecptr(inputCopy), inputCopy.size()); - - ByteArray digest; - digest.resize(256/8); - done(&context, (boost::uint8_t*) vecptr(digest)); - - return digest; -} - -ByteArray SHA256::getHash(const ByteArray& input) { - return getHashInternal(input); -} - -ByteArray SHA256::getHash(const SafeByteArray& input) { - return getHashInternal(input); -} - -} |