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main.cpp
#include <iostream>#include "sha512.h"
using std::string;using std::cout;using std::endl;
int main(int argc, char*argv[]){
string input ="grape";
string output1 = sha512(input);
cout<<"sha512('"<< input <<"'):"<< output1 << endl;return0;}
compile and run (in linux):
g++ sha512.cpp main.cpp -o sha512_example && ./sha512_example
output:
sha512('grape'):9375d1abdb644a01955bccad12e2f5c2bd8a3e226187e548d99c559a99461453b980123746753d07c169c22a5d9cc75cb158f0e8d8c0e713559775b5e1391fc4
sha512.h
#ifndef SHA512_H#define SHA512_H#include <string>
class SHA512
{protected:typedefunsignedchar uint8;typedefunsignedint uint32;typedefunsignedlonglong uint64;
conststatic uint64 sha512_k[];staticconstunsignedint SHA384_512_BLOCK_SIZE =(1024/8);
public:void init();void update(constunsignedchar*message, unsignedint len);void final(unsignedchar*digest);staticconstunsignedint DIGEST_SIZE =(512/8);
protected:void transform(constunsignedchar*message, unsignedint block_nb);unsignedint m_tot_len;unsignedint m_len;unsignedchar m_block[2* SHA384_512_BLOCK_SIZE];
uint64 m_h[8];};
std::string sha512(std::string input);
#define SHA2_SHFR(x, n) (x >> n)#define SHA2_ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n)))#define SHA2_ROTL(x, n) ((x << n) | (x >> ((sizeof(x) << 3) - n)))#define SHA2_CH(x, y, z) ((x & y) ^ (~x & z))#define SHA2_MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z))#define SHA512_F1(x) (SHA2_ROTR(x, 28) ^ SHA2_ROTR(x, 34) ^ SHA2_ROTR(x, 39))#define SHA512_F2(x) (SHA2_ROTR(x, 14) ^ SHA2_ROTR(x, 18) ^ SHA2_ROTR(x, 41))#define SHA512_F3(x) (SHA2_ROTR(x, 1) ^ SHA2_ROTR(x, 8) ^ SHA2_SHFR(x, 7))#define SHA512_F4(x) (SHA2_ROTR(x, 19) ^ SHA2_ROTR(x, 61) ^ SHA2_SHFR(x, 6))#define SHA2_UNPACK32(x, str) \{ \ *((str) + 3) = (uint8) ((x) ); \ *((str) + 2) = (uint8) ((x) >> 8); \ *((str) + 1) = (uint8) ((x) >> 16); \ *((str) + 0) = (uint8) ((x) >> 24); \}#define SHA2_UNPACK64(x, str) \{ \ *((str) + 7) = (uint8) ((x) ); \ *((str) + 6) = (uint8) ((x) >> 8); \ *((str) + 5) = (uint8) ((x) >> 16); \ *((str) + 4) = (uint8) ((x) >> 24); \ *((str) + 3) = (uint8) ((x) >> 32); \ *((str) + 2) = (uint8) ((x) >> 40); \ *((str) + 1) = (uint8) ((x) >> 48); \ *((str) + 0) = (uint8) ((x) >> 56); \}#define SHA2_PACK64(str, x) \{ \ *(x) = ((uint64) *((str) + 7) ) \ | ((uint64) *((str) + 6) << 8) \ | ((uint64) *((str) + 5) << 16) \ | ((uint64) *((str) + 4) << 24) \ | ((uint64) *((str) + 3) << 32) \ | ((uint64) *((str) + 2) << 40) \ | ((uint64) *((str) + 1) << 48) \ | ((uint64) *((str) + 0) << 56); \}
#endif
sha512.cpp
#include <cstring>#include <fstream>#include "sha512.h"
constunsignedlonglong SHA512::sha512_k[80]=//ULL = uint64{0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL};
void SHA512::transform(constunsignedchar*message, unsignedint block_nb){
uint64 w[80];
uint64 wv[8];
uint64 t1, t2;constunsignedchar*sub_block;int i, j;for(i =0; i <(int) block_nb; i++){
sub_block = message +(i <<7);for(j =0; j <16; j++){
SHA2_PACK64(&sub_block[j <<3], &w[j]);}for(j =16; j <80; j++){
w[j]= SHA512_F4(w[j -2])+ w[j -7]+ SHA512_F3(w[j -15])+ w[j -16];}for(j =0; j <8; j++){
wv[j]= m_h[j];}for(j =0; j <80; j++){
t1 = wv[7]+ SHA512_F2(wv[4])+ SHA2_CH(wv[4], wv[5], wv[6])+ sha512_k[j]+ w[j];
t2 = SHA512_F1(wv[0])+ SHA2_MAJ(wv[0], wv[1], wv[2]);
wv[7]= wv[6];
wv[6]= wv[5];
wv[5]= wv[4];
wv[4]= wv[3]+ t1;
wv[3]= wv[2];
wv[2]= wv[1];
wv[1]= wv[0];
wv[0]= t1 + t2;}for(j =0; j <8; j++){
m_h[j]+= wv[j];}
}}
void SHA512::init(){
m_h[0]= 0x6a09e667f3bcc908ULL;
m_h[1]= 0xbb67ae8584caa73bULL;
m_h[2]= 0x3c6ef372fe94f82bULL;
m_h[3]= 0xa54ff53a5f1d36f1ULL;
m_h[4]= 0x510e527fade682d1ULL;
m_h[5]= 0x9b05688c2b3e6c1fULL;
m_h[6]= 0x1f83d9abfb41bd6bULL;
m_h[7]= 0x5be0cd19137e2179ULL;
m_len =0;
m_tot_len =0;}
void SHA512::update(constunsignedchar*message, unsignedint len){unsignedint block_nb;unsignedint new_len, rem_len, tmp_len;constunsignedchar*shifted_message;
tmp_len = SHA384_512_BLOCK_SIZE - m_len;
rem_len = len < tmp_len ? len : tmp_len;memcpy(&m_block[m_len], message, rem_len);if(m_len + len < SHA384_512_BLOCK_SIZE){
m_len += len;return;}
new_len = len - rem_len;
block_nb = new_len / SHA384_512_BLOCK_SIZE;
shifted_message = message + rem_len;
transform(m_block, 1);
transform(shifted_message, block_nb);
rem_len = new_len % SHA384_512_BLOCK_SIZE;memcpy(m_block, &shifted_message[block_nb <<7], rem_len);
m_len = rem_len;
m_tot_len +=(block_nb +1)<<7;}
void SHA512::final(unsignedchar*digest){unsignedint block_nb;unsignedint pm_len;unsignedint len_b;int i;
block_nb =1+((SHA384_512_BLOCK_SIZE -17)<(m_len % SHA384_512_BLOCK_SIZE));
len_b =(m_tot_len + m_len)<<3;
pm_len = block_nb <<7;memset(m_block + m_len, 0, pm_len - m_len);
m_block[m_len]=0x80;
SHA2_UNPACK32(len_b, m_block + pm_len -4);
transform(m_block, block_nb);for(i =0; i <8; i++){
SHA2_UNPACK64(m_h[i], &digest[i <<3]);}}
std::string sha512(std::string input){unsignedchar digest[SHA512::DIGEST_SIZE];memset(digest,0,SHA512::DIGEST_SIZE);
SHA512 ctx = SHA512();
ctx.init();
ctx.update((unsignedchar*)input.c_str(), input.length());
ctx.final(digest);
char buf[2*SHA512::DIGEST_SIZE+1];
buf[2*SHA512::DIGEST_SIZE]=0;for(int i =0; i < SHA512::DIGEST_SIZE; i++)sprintf(buf+i*2, "%02x", digest[i]);return std::string(buf);}
LICENSE.txt
/*
* Updated to C++, zedwood.com 2012
* Based on Olivier Gay's version
* See Modified BSD License below:
*
* FIPS 180-2 SHA-224/256/384/512 implementation
* Issue date: 04/30/2005
* http://www.ouah.org/ogay/sha2/
*
* Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
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