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439 lines
12 KiB
439 lines
12 KiB
6 years ago
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#pragma once
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/**
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@file
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@brief SHA-256, SHA-512 class
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@author MITSUNARI Shigeo(@herumi)
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@license modified new BSD license
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http://opensource.org/licenses/BSD-3-Clause
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*/
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#include <cybozu/endian.hpp>
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#ifndef CYBOZU_DONT_USE_STRING
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#include <cybozu/itoa.hpp>
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#include <string>
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#endif
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#include <memory.h>
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#include <assert.h>
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namespace cybozu {
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namespace sha2_local {
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template<class T>
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T min_(T x, T y) { return x < y ? x : y;; }
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#ifndef CYBOZU_DONT_USE_STRING
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inline void uint32toHexStr(char *buf, const uint32_t *x, size_t n)
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{
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for (size_t i = 0; i < n; i++) {
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cybozu::itohex(buf + i * 8, 8, x[i], false);
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}
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}
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inline void uint64toHexStr(char *buf, const uint64_t *x, size_t n)
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{
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for (size_t i = 0; i < n; i++) {
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cybozu::itohex(buf + i * 16, 16, x[i], false);
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}
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}
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#endif
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inline uint32_t rot32(uint32_t x, int s)
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{
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#ifdef _MSC_VER
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return _rotr(x, s);
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#else
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return (x >> s) | (x << (32 - s));
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#endif
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}
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inline uint64_t rot64(uint64_t x, int s)
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{
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#ifdef _MSC_VER
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return _rotr64(x, s);
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#else
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return (x >> s) | (x << (64 - s));
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#endif
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}
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} // cybozu::sha2_local
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class Sha256 {
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private:
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static const size_t blockSize_ = 64;
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static const size_t hSize_ = 8;
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uint64_t totalSize_;
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size_t roundBufSize_;
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char roundBuf_[blockSize_];
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uint32_t h_[hSize_];
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static const size_t outByteSize_ = hSize_ * sizeof(uint32_t);
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const uint32_t *k_;
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/**
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@param buf [in] buffer(64byte)
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*/
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void round(const char *buf)
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{
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using namespace sha2_local;
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uint32_t w[64];
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for (int i = 0; i < 16; i++) {
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w[i] = cybozu::Get32bitAsBE(&buf[i * 4]);
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}
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for (int i = 16 ; i < 64; i++) {
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uint32_t t = w[i - 15];
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uint32_t s0 = rot32(t, 7) ^ rot32(t, 18) ^ (t >> 3);
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t = w[i - 2];
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uint32_t s1 = rot32(t, 17) ^ rot32(t, 19) ^ (t >> 10);
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w[i] = w[i - 16] + s0 + w[i - 7] + s1;
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}
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uint32_t a = h_[0];
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uint32_t b = h_[1];
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uint32_t c = h_[2];
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uint32_t d = h_[3];
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uint32_t e = h_[4];
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uint32_t f = h_[5];
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uint32_t g = h_[6];
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uint32_t h = h_[7];
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for (int i = 0; i < 64; i++) {
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uint32_t s1 = rot32(e, 6) ^ rot32(e, 11) ^ rot32(e, 25);
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uint32_t ch = g ^ (e & (f ^ g));
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uint32_t t1 = h + s1 + ch + k_[i] + w[i];
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uint32_t s0 = rot32(a, 2) ^ rot32(a, 13) ^ rot32(a, 22);
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uint32_t maj = ((a | b) & c) | (a & b);
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uint32_t t2 = s0 + maj;
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h = g;
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g = f;
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f = e;
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e = d + t1;
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d = c;
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c = b;
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b = a;
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a = t1 + t2;
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}
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h_[0] += a;
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h_[1] += b;
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h_[2] += c;
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h_[3] += d;
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h_[4] += e;
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h_[5] += f;
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h_[6] += g;
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h_[7] += h;
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totalSize_ += 64;
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}
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/*
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final phase
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*/
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void term(const char *buf, size_t bufSize)
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{
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assert(bufSize < blockSize_);
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const uint64_t totalSize = totalSize_ + bufSize;
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uint8_t last[blockSize_];
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memcpy(last, buf, bufSize);
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memset(&last[bufSize], 0, blockSize_ - bufSize);
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last[bufSize] = uint8_t(0x80); /* top bit = 1 */
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if (bufSize >= blockSize_ - 8) {
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round(reinterpret_cast<const char*>(last));
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memset(last, 0, sizeof(last)); // clear stack
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}
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cybozu::Set32bitAsBE(&last[56], uint32_t(totalSize >> 29));
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cybozu::Set32bitAsBE(&last[60], uint32_t(totalSize * 8));
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round(reinterpret_cast<const char*>(last));
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}
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public:
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Sha256()
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{
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clear();
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}
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Sha256(const void *buf, size_t bufSize)
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{
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clear();
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digest(buf, bufSize);
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}
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void clear()
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{
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static const uint32_t kTbl[] = {
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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};
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k_ = kTbl;
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totalSize_ = 0;
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roundBufSize_ = 0;
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h_[0] = 0x6a09e667;
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h_[1] = 0xbb67ae85;
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h_[2] = 0x3c6ef372;
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h_[3] = 0xa54ff53a;
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h_[4] = 0x510e527f;
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h_[5] = 0x9b05688c;
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h_[6] = 0x1f83d9ab;
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h_[7] = 0x5be0cd19;
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}
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void update(const void *buf_, size_t bufSize)
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{
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const char *buf = reinterpret_cast<const char*>(buf_);
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if (bufSize == 0) return;
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if (roundBufSize_ > 0) {
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size_t size = sha2_local::min_(blockSize_ - roundBufSize_, bufSize);
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memcpy(roundBuf_ + roundBufSize_, buf, size);
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roundBufSize_ += size;
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buf += size;
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bufSize -= size;
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}
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if (roundBufSize_ == blockSize_) {
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round(roundBuf_);
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roundBufSize_ = 0;
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}
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while (bufSize >= blockSize_) {
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assert(roundBufSize_ == 0);
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round(buf);
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buf += blockSize_;
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bufSize -= blockSize_;
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}
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if (bufSize > 0) {
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assert(bufSize < blockSize_);
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assert(roundBufSize_ == 0);
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memcpy(roundBuf_, buf, bufSize);
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roundBufSize_ = bufSize;
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}
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assert(roundBufSize_ < blockSize_);
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}
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void digest(const void *buf, size_t bufSize)
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{
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update(buf, bufSize);
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term(roundBuf_, roundBufSize_);
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}
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size_t get(void *out) const
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{
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char *p = reinterpret_cast<char*>(out);
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for (size_t i = 0; i < hSize_; i++) {
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cybozu::Set32bitAsBE(&p[i * sizeof(h_[0])], h_[i]);
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}
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return outByteSize_;
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}
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#ifndef CYBOZU_DONT_USE_STRING
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void update(const std::string& buf)
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{
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update(buf.c_str(), buf.size());
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}
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void digest(const std::string& str = "")
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{
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digest(str.c_str(), str.size());
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}
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std::string get() const
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{
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char out[outByteSize_];
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get(out);
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return std::string(out, sizeof(out));
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}
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std::string toHexStr() const
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{
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char buf[outByteSize_ * 2];
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sha2_local::uint32toHexStr(buf, h_, hSize_);
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return std::string(buf, sizeof(buf));
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}
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#endif
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};
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class Sha512 {
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private:
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static const size_t blockSize_ = 128;
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static const size_t hSize_ = 8;
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uint64_t totalSize_;
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size_t roundBufSize_;
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char roundBuf_[blockSize_];
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uint64_t h_[hSize_];
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static const size_t outByteSize_ = hSize_ * sizeof(uint64_t);
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const uint64_t *k_;
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template<size_t i0, size_t i1, size_t i2, size_t i3, size_t i4, size_t i5, size_t i6, size_t i7>
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void round1(uint64_t *S, const uint64_t *w, size_t i)
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{
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using namespace sha2_local;
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uint64_t& a = S[i0];
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uint64_t& b = S[i1];
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uint64_t& c = S[i2];
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uint64_t& d = S[i3];
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uint64_t& e = S[i4];
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uint64_t& f = S[i5];
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uint64_t& g = S[i6];
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uint64_t& h = S[i7];
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uint64_t s1 = rot64(e, 14) ^ rot64(e, 18) ^ rot64(e, 41);
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uint64_t ch = g ^ (e & (f ^ g));
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uint64_t t0 = h + s1 + ch + k_[i] + w[i];
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uint64_t s0 = rot64(a, 28) ^ rot64(a, 34) ^ rot64(a, 39);
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uint64_t maj = ((a | b) & c) | (a & b);
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uint64_t t1 = s0 + maj;
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d += t0;
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h = t0 + t1;
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}
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/**
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@param buf [in] buffer(64byte)
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*/
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void round(const char *buf)
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{
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using namespace sha2_local;
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uint64_t w[80];
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for (int i = 0; i < 16; i++) {
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w[i] = cybozu::Get64bitAsBE(&buf[i * 8]);
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}
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for (int i = 16 ; i < 80; i++) {
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uint64_t t = w[i - 15];
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uint64_t s0 = rot64(t, 1) ^ rot64(t, 8) ^ (t >> 7);
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t = w[i - 2];
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uint64_t s1 = rot64(t, 19) ^ rot64(t, 61) ^ (t >> 6);
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w[i] = w[i - 16] + s0 + w[i - 7] + s1;
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}
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uint64_t s[8];
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for (int i = 0; i < 8; i++) {
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s[i] = h_[i];
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}
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for (int i = 0; i < 80; i += 8) {
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round1<0, 1, 2, 3, 4, 5, 6, 7>(s, w, i + 0);
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round1<7, 0, 1, 2, 3, 4, 5, 6>(s, w, i + 1);
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round1<6, 7, 0, 1, 2, 3, 4, 5>(s, w, i + 2);
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round1<5, 6, 7, 0, 1, 2, 3, 4>(s, w, i + 3);
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round1<4, 5, 6, 7, 0, 1, 2, 3>(s, w, i + 4);
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round1<3, 4, 5, 6, 7, 0, 1, 2>(s, w, i + 5);
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round1<2, 3, 4, 5, 6, 7, 0, 1>(s, w, i + 6);
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round1<1, 2, 3, 4, 5, 6, 7, 0>(s, w, i + 7);
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}
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for (int i = 0; i < 8; i++) {
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h_[i] += s[i];
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}
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totalSize_ += blockSize_;
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}
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/*
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final phase
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*/
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void term(const char *buf, size_t bufSize)
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{
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assert(bufSize < blockSize_);
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const uint64_t totalSize = totalSize_ + bufSize;
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uint8_t last[blockSize_];
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memcpy(last, buf, bufSize);
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memset(&last[bufSize], 0, blockSize_ - bufSize);
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last[bufSize] = uint8_t(0x80); /* top bit = 1 */
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if (bufSize >= blockSize_ - 16) {
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round(reinterpret_cast<const char*>(last));
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memset(last, 0, sizeof(last)); // clear stack
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}
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cybozu::Set64bitAsBE(&last[blockSize_ - 8], totalSize * 8);
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round(reinterpret_cast<const char*>(last));
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}
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public:
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Sha512()
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{
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clear();
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}
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Sha512(const void *buf, size_t bufSize)
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{
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|
clear();
|
||
|
|
digest(buf, bufSize);
|
||
|
|
}
|
||
|
|
void clear()
|
||
|
|
{
|
||
|
|
static const uint64_t kTbl[] = {
|
||
|
|
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
|
||
|
|
};
|
||
|
|
k_ = kTbl;
|
||
|
|
totalSize_ = 0;
|
||
|
|
roundBufSize_ = 0;
|
||
|
|
h_[0] = 0x6a09e667f3bcc908ull;
|
||
|
|
h_[1] = 0xbb67ae8584caa73bull;
|
||
|
|
h_[2] = 0x3c6ef372fe94f82bull;
|
||
|
|
h_[3] = 0xa54ff53a5f1d36f1ull;
|
||
|
|
h_[4] = 0x510e527fade682d1ull;
|
||
|
|
h_[5] = 0x9b05688c2b3e6c1full;
|
||
|
|
h_[6] = 0x1f83d9abfb41bd6bull;
|
||
|
|
h_[7] = 0x5be0cd19137e2179ull;
|
||
|
|
}
|
||
|
|
void update(const void *buf_, size_t bufSize)
|
||
|
|
{
|
||
|
|
const char *buf = reinterpret_cast<const char*>(buf_);
|
||
|
|
if (bufSize == 0) return;
|
||
|
|
if (roundBufSize_ > 0) {
|
||
|
|
size_t size = sha2_local::min_(blockSize_ - roundBufSize_, bufSize);
|
||
|
|
memcpy(roundBuf_ + roundBufSize_, buf, size);
|
||
|
|
roundBufSize_ += size;
|
||
|
|
buf += size;
|
||
|
|
bufSize -= size;
|
||
|
|
}
|
||
|
|
if (roundBufSize_ == blockSize_) {
|
||
|
|
round(roundBuf_);
|
||
|
|
roundBufSize_ = 0;
|
||
|
|
}
|
||
|
|
while (bufSize >= blockSize_) {
|
||
|
|
assert(roundBufSize_ == 0);
|
||
|
|
round(buf);
|
||
|
|
buf += blockSize_;
|
||
|
|
bufSize -= blockSize_;
|
||
|
|
}
|
||
|
|
if (bufSize > 0) {
|
||
|
|
assert(bufSize < blockSize_);
|
||
|
|
assert(roundBufSize_ == 0);
|
||
|
|
memcpy(roundBuf_, buf, bufSize);
|
||
|
|
roundBufSize_ = bufSize;
|
||
|
|
}
|
||
|
|
assert(roundBufSize_ < blockSize_);
|
||
|
|
}
|
||
|
|
void digest(const void *buf, size_t bufSize)
|
||
|
|
{
|
||
|
|
update(buf, bufSize);
|
||
|
|
term(roundBuf_, roundBufSize_);
|
||
|
|
}
|
||
|
|
size_t get(void *out) const
|
||
|
|
{
|
||
|
|
char *p = reinterpret_cast<char*>(out);
|
||
|
|
for (size_t i = 0; i < hSize_; i++) {
|
||
|
|
cybozu::Set64bitAsBE(&p[i * sizeof(h_[0])], h_[i]);
|
||
|
|
}
|
||
|
|
return outByteSize_;
|
||
|
|
}
|
||
|
|
#ifndef CYBOZU_DONT_USE_STRING
|
||
|
|
void digest(const std::string& str = "")
|
||
|
|
{
|
||
|
|
digest(str.c_str(), str.size());
|
||
|
|
}
|
||
|
|
void update(const std::string& buf)
|
||
|
|
{
|
||
|
|
update(buf.c_str(), buf.size());
|
||
|
|
}
|
||
|
|
std::string get() const
|
||
|
|
{
|
||
|
|
char out[outByteSize_];
|
||
|
|
get(out);
|
||
|
|
return std::string(out, sizeof(out));
|
||
|
|
}
|
||
|
|
std::string toHexStr() const
|
||
|
|
{
|
||
|
|
char buf[outByteSize_ * 2];
|
||
|
|
sha2_local::uint64toHexStr(buf, h_, hSize_);
|
||
|
|
return std::string(buf, sizeof(buf));
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
} // cybozu
|