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diff --git a/libdevcore/picosha2.h b/libdevcore/picosha2.h
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-/*
-The MIT License (MIT)
-
-Copyright (C) 2014 okdshin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-#ifndef PICOSHA2_H
-#define PICOSHA2_H
-//picosha2:20140213
-#include <cstdint>
-#include <iostream>
-#include <vector>
-#include <iterator>
-#include <cassert>
-#include <sstream>
-#include <algorithm>
-
-namespace picosha2
-{
-
-namespace detail
-{
-
-inline uint8_t mask_8bit(uint8_t x){
- return x&0xff;
-}
-
-inline uint32_t mask_32bit(uint32_t x){
- return x&0xffffffff;
-}
-
-static const uint32_t add_constant[64] = {
- 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
- 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
- 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
- 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
- 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
- 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
- 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
- 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
- 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
- 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
- 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
- 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
- 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
- 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
- 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
- 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
-};
-
-static const uint32_t initial_message_digest[8] = {
- 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
- 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
-};
-
-inline uint32_t ch(uint32_t x, uint32_t y, uint32_t z){
- return (x&y)^((~x)&z);
-}
-
-inline uint32_t maj(uint32_t x, uint32_t y, uint32_t z){
- return (x&y)^(x&z)^(y&z);
-}
-
-inline uint32_t rotr(uint32_t x, std::size_t n){
- assert(n < 32);
- return mask_32bit((x>>n)|(x<<(32-n)));
-}
-
-inline uint32_t bsig0(uint32_t x){
- return rotr(x, 2)^rotr(x, 13)^rotr(x, 22);
-}
-
-inline uint32_t bsig1(uint32_t x){
- return rotr(x, 6)^rotr(x, 11)^rotr(x, 25);
-}
-
-inline uint32_t shr(uint32_t x, std::size_t n){
- assert(n < 32);
- return x >> n;
-}
-
-inline uint32_t ssig0(uint32_t x){
- return rotr(x, 7)^rotr(x, 18)^shr(x, 3);
-}
-
-inline uint32_t ssig1(uint32_t x){
- return rotr(x, 17)^rotr(x, 19)^shr(x, 10);
-}
-
-template<typename RaIter1, typename RaIter2>
-void hash256_block(RaIter1 message_digest, RaIter2 first, RaIter2 last){
- (void)last; // FIXME: check this is valid
- uint32_t w[64];
- std::fill(w, w+64, 0);
- for(std::size_t i = 0; i < 16; ++i){
- w[i] = (static_cast<uint32_t>(mask_8bit(*(first+i*4)))<<24)
- |(static_cast<uint32_t>(mask_8bit(*(first+i*4+1)))<<16)
- |(static_cast<uint32_t>(mask_8bit(*(first+i*4+2)))<<8)
- |(static_cast<uint32_t>(mask_8bit(*(first+i*4+3))));
- }
- for(std::size_t i = 16; i < 64; ++i){
- w[i] = mask_32bit(ssig1(w[i-2])+w[i-7]+ssig0(w[i-15])+w[i-16]);
- }
-
- uint32_t a = *message_digest;
- uint32_t b = *(message_digest+1);
- uint32_t c = *(message_digest+2);
- uint32_t d = *(message_digest+3);
- uint32_t e = *(message_digest+4);
- uint32_t f = *(message_digest+5);
- uint32_t g = *(message_digest+6);
- uint32_t h = *(message_digest+7);
-
- for(std::size_t i = 0; i < 64; ++i){
- uint32_t temp1 = h+bsig1(e)+ch(e,f,g)+add_constant[i]+w[i];
- uint32_t temp2 = bsig0(a)+maj(a,b,c);
- h = g;
- g = f;
- f = e;
- e = mask_32bit(d+temp1);
- d = c;
- c = b;
- b = a;
- a = mask_32bit(temp1+temp2);
- }
- *message_digest += a;
- *(message_digest+1) += b;
- *(message_digest+2) += c;
- *(message_digest+3) += d;
- *(message_digest+4) += e;
- *(message_digest+5) += f;
- *(message_digest+6) += g;
- *(message_digest+7) += h;
- for(std::size_t i = 0; i < 8; ++i){
- *(message_digest+i) = mask_32bit(*(message_digest+i));
- }
-}
-
-}//namespace detail
-
-template<typename InIter>
-void output_hex(InIter first, InIter last, std::ostream& os){
- os.setf(std::ios::hex, std::ios::basefield);
- while(first != last){
- os.width(2);
- os.fill('0');
- os << static_cast<unsigned int>(*first);
- ++first;
- }
- os.setf(std::ios::dec, std::ios::basefield);
-}
-
-template<typename InIter>
-void bytes_to_hex_string(InIter first, InIter last, std::string& hex_str){
- std::ostringstream oss;
- output_hex(first, last, oss);
- hex_str.assign(oss.str());
-}
-
-template<typename InContainer>
-void bytes_to_hex_string(const InContainer& bytes, std::string& hex_str){
- bytes_to_hex_string(bytes.begin(), bytes.end(), hex_str);
-}
-
-template<typename InIter>
-std::string bytes_to_hex_string(InIter first, InIter last){
- std::string hex_str;
- bytes_to_hex_string(first, last, hex_str);
- return hex_str;
-}
-
-template<typename InContainer>
-std::string bytes_to_hex_string(const InContainer& bytes){
- std::string hex_str;
- bytes_to_hex_string(bytes, hex_str);
- return hex_str;
-}
-
-class hash256_one_by_one {
-public:
- hash256_one_by_one(){
- init();
- }
-
- void init(){
- buffer_.clear();
- std::fill(data_length_digits_, data_length_digits_+4, 0);
- std::copy(detail::initial_message_digest, detail::initial_message_digest+8, h_);
- }
-
- template<typename RaIter>
- void process(RaIter first, RaIter last){
- add_to_data_length(std::distance(first, last));
- std::copy(first, last, std::back_inserter(buffer_));
- std::size_t i = 0;
- for(;i+64 <= buffer_.size(); i+=64){
- detail::hash256_block(h_, buffer_.begin()+i, buffer_.begin()+i+64);
- }
- buffer_.erase(buffer_.begin(), buffer_.begin()+i);
- }
-
- void finish(){
- uint8_t temp[64];
- std::fill(temp, temp+64, 0);
- std::size_t remains = buffer_.size();
- std::copy(buffer_.begin(), buffer_.end(), temp);
- temp[remains] = 0x80;
-
- if(remains > 55){
- std::fill(temp+remains+1, temp+64, 0);
- detail::hash256_block(h_, temp, temp+64);
- std::fill(temp, temp+64-4, 0);
- }
- else {
- std::fill(temp+remains+1, temp+64-4, 0);
- }
-
- write_data_bit_length(&(temp[56]));
- detail::hash256_block(h_, temp, temp+64);
- }
-
- template<typename OutIter>
- void get_hash_bytes(OutIter first, OutIter last)const{
- for(const uint32_t* iter = h_; iter != h_+8; ++iter){
- for(std::size_t i = 0; i < 4 && first != last; ++i){
- *(first++) = detail::mask_8bit(static_cast<uint8_t>((*iter >> (24-8*i))));
- }
- }
- }
-
-private:
- void add_to_data_length(uint32_t n) {
- uint32_t carry = 0;
- data_length_digits_[0] += n;
- for(std::size_t i = 0; i < 4; ++i) {
- data_length_digits_[i] += carry;
- if(data_length_digits_[i] >= 65536u) {
- data_length_digits_[i] -= 65536u;
- carry = 1;
- }
- else {
- break;
- }
- }
- }
- void write_data_bit_length(uint8_t* begin) {
- uint32_t data_bit_length_digits[4];
- std::copy(
- data_length_digits_, data_length_digits_+4,
- data_bit_length_digits
- );
-
- // convert byte length to bit length (multiply 8 or shift 3 times left)
- uint32_t carry = 0;
- for(std::size_t i = 0; i < 4; ++i) {
- uint32_t before_val = data_bit_length_digits[i];
- data_bit_length_digits[i] <<= 3;
- data_bit_length_digits[i] |= carry;
- data_bit_length_digits[i] &= 65535u;
- carry = (before_val >> (16-3)) & 65535u;
- }
-
- // write data_bit_length
- for(int i = 3; i >= 0; --i) {
- (*begin++) = static_cast<uint8_t>(data_bit_length_digits[i] >> 8);
- (*begin++) = static_cast<uint8_t>(data_bit_length_digits[i]);
- }
- }
- std::vector<uint8_t> buffer_;
- uint32_t data_length_digits_[4]; //as 64bit integer (16bit x 4 integer)
- uint32_t h_[8];
-};
-
-inline void get_hash_hex_string(const hash256_one_by_one& hasher, std::string& hex_str){
- uint8_t hash[32];
- hasher.get_hash_bytes(hash, hash+32);
- return bytes_to_hex_string(hash, hash+32, hex_str);
-}
-
-inline std::string get_hash_hex_string(const hash256_one_by_one& hasher){
- std::string hex_str;
- get_hash_hex_string(hasher, hex_str);
- return hex_str;
-}
-
-template<typename RaIter, typename OutIter>
-void hash256(RaIter first, RaIter last, OutIter first2, OutIter last2){
- hash256_one_by_one hasher;
- //hasher.init();
- hasher.process(first, last);
- hasher.finish();
- hasher.get_hash_bytes(first2, last2);
-}
-
-template<typename RaIter, typename OutContainer>
-void hash256(RaIter first, RaIter last, OutContainer& dst){
- hash256(first, last, dst.begin(), dst.end());
-}
-
-template<typename RaContainer, typename OutIter>
-void hash256(const RaContainer& src, OutIter first, OutIter last){
- hash256(src.begin(), src.end(), first, last);
-}
-
-template<typename RaContainer, typename OutContainer>
-void hash256(const RaContainer& src, OutContainer& dst){
- hash256(src.begin(), src.end(), dst.begin(), dst.end());
-}
-
-
-template<typename RaIter>
-void hash256_hex_string(RaIter first, RaIter last, std::string& hex_str){
- uint8_t hashed[32];
- hash256(first, last, hashed, hashed+32);
- std::ostringstream oss;
- output_hex(hashed, hashed+32, oss);
- hex_str.assign(oss.str());
-}
-
-template<typename RaIter>
-std::string hash256_hex_string(RaIter first, RaIter last){
- std::string hex_str;
- hash256_hex_string(first, last, hex_str);
- return hex_str;
-}
-
-inline void hash256_hex_string(const std::string& src, std::string& hex_str){
- hash256_hex_string(src.begin(), src.end(), hex_str);
-}
-
-template<typename RaContainer>
-void hash256_hex_string(const RaContainer& src, std::string& hex_str){
- hash256_hex_string(src.begin(), src.end(), hex_str);
-}
-
-template<typename RaContainer>
-std::string hash256_hex_string(const RaContainer& src){
- return hash256_hex_string(src.begin(), src.end());
-}
-
-}//namespace picosha2
-
-#endif //PICOSHA2_H
generated by cgit (git 2.34.1) at 2024-11-19 00:11:41 +0800