git / moonbite-core / src/crypto/sha1.cpp · raw

// Copyright (c) 2014-2019 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#include <crypto/sha1.h>#include <crypto/common.h>#include <string.h>// Internal implementation code.namespace{/// Internal SHA-1 implementation.namespace sha1{/** One round of SHA-1. */void inline Round(uint32_t a, uint32_t& b, uint32_t c, uint32_t d, uint32_t& e, uint32_t f, uint32_t k, uint32_t w){    e += ((a << 5) | (a >> 27)) + f + k + w;    b = (b << 30) | (b >> 2);}uint32_t inline f1(uint32_t b, uint32_t c, uint32_t d) { return d ^ (b & (c ^ d)); }uint32_t inline f2(uint32_t b, uint32_t c, uint32_t d) { return b ^ c ^ d; }uint32_t inline f3(uint32_t b, uint32_t c, uint32_t d) { return (b & c) | (d & (b | c)); }uint32_t inline left(uint32_t x) { return (x << 1) | (x >> 31); }/** Initialize SHA-1 state. */void inline Initialize(uint32_t* s){    s[0] = 0x67452301ul;    s[1] = 0xEFCDAB89ul;    s[2] = 0x98BADCFEul;    s[3] = 0x10325476ul;    s[4] = 0xC3D2E1F0ul;}const uint32_t k1 = 0x5A827999ul;const uint32_t k2 = 0x6ED9EBA1ul;const uint32_t k3 = 0x8F1BBCDCul;const uint32_t k4 = 0xCA62C1D6ul;/** Perform a SHA-1 transformation, processing a 64-byte chunk. */void Transform(uint32_t* s, const unsigned char* chunk){    uint32_t a = s[0], b = s[1], c = s[2], d = s[3], e = s[4];    uint32_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;    Round(a, b, c, d, e, f1(b, c, d), k1, w0 = ReadBE32(chunk + 0));    Round(e, a, b, c, d, f1(a, b, c), k1, w1 = ReadBE32(chunk + 4));    Round(d, e, a, b, c, f1(e, a, b), k1, w2 = ReadBE32(chunk + 8));    Round(c, d, e, a, b, f1(d, e, a), k1, w3 = ReadBE32(chunk + 12));    Round(b, c, d, e, a, f1(c, d, e), k1, w4 = ReadBE32(chunk + 16));    Round(a, b, c, d, e, f1(b, c, d), k1, w5 = ReadBE32(chunk + 20));    Round(e, a, b, c, d, f1(a, b, c), k1, w6 = ReadBE32(chunk + 24));    Round(d, e, a, b, c, f1(e, a, b), k1, w7 = ReadBE32(chunk + 28));    Round(c, d, e, a, b, f1(d, e, a), k1, w8 = ReadBE32(chunk + 32));    Round(b, c, d, e, a, f1(c, d, e), k1, w9 = ReadBE32(chunk + 36));    Round(a, b, c, d, e, f1(b, c, d), k1, w10 = ReadBE32(chunk + 40));    Round(e, a, b, c, d, f1(a, b, c), k1, w11 = ReadBE32(chunk + 44));    Round(d, e, a, b, c, f1(e, a, b), k1, w12 = ReadBE32(chunk + 48));    Round(c, d, e, a, b, f1(d, e, a), k1, w13 = ReadBE32(chunk + 52));    Round(b, c, d, e, a, f1(c, d, e), k1, w14 = ReadBE32(chunk + 56));    Round(a, b, c, d, e, f1(b, c, d), k1, w15 = ReadBE32(chunk + 60));    Round(e, a, b, c, d, f1(a, b, c), k1, w0 = left(w0 ^ w13 ^ w8 ^ w2));    Round(d, e, a, b, c, f1(e, a, b), k1, w1 = left(w1 ^ w14 ^ w9 ^ w3));    Round(c, d, e, a, b, f1(d, e, a), k1, w2 = left(w2 ^ w15 ^ w10 ^ w4));    Round(b, c, d, e, a, f1(c, d, e), k1, w3 = left(w3 ^ w0 ^ w11 ^ w5));    Round(a, b, c, d, e, f2(b, c, d), k2, w4 = left(w4 ^ w1 ^ w12 ^ w6));    Round(e, a, b, c, d, f2(a, b, c), k2, w5 = left(w5 ^ w2 ^ w13 ^ w7));    Round(d, e, a, b, c, f2(e, a, b), k2, w6 = left(w6 ^ w3 ^ w14 ^ w8));    Round(c, d, e, a, b, f2(d, e, a), k2, w7 = left(w7 ^ w4 ^ w15 ^ w9));    Round(b, c, d, e, a, f2(c, d, e), k2, w8 = left(w8 ^ w5 ^ w0 ^ w10));    Round(a, b, c, d, e, f2(b, c, d), k2, w9 = left(w9 ^ w6 ^ w1 ^ w11));    Round(e, a, b, c, d, f2(a, b, c), k2, w10 = left(w10 ^ w7 ^ w2 ^ w12));    Round(d, e, a, b, c, f2(e, a, b), k2, w11 = left(w11 ^ w8 ^ w3 ^ w13));    Round(c, d, e, a, b, f2(d, e, a), k2, w12 = left(w12 ^ w9 ^ w4 ^ w14));    Round(b, c, d, e, a, f2(c, d, e), k2, w13 = left(w13 ^ w10 ^ w5 ^ w15));    Round(a, b, c, d, e, f2(b, c, d), k2, w14 = left(w14 ^ w11 ^ w6 ^ w0));    Round(e, a, b, c, d, f2(a, b, c), k2, w15 = left(w15 ^ w12 ^ w7 ^ w1));    Round(d, e, a, b, c, f2(e, a, b), k2, w0 = left(w0 ^ w13 ^ w8 ^ w2));    Round(c, d, e, a, b, f2(d, e, a), k2, w1 = left(w1 ^ w14 ^ w9 ^ w3));    Round(b, c, d, e, a, f2(c, d, e), k2, w2 = left(w2 ^ w15 ^ w10 ^ w4));    Round(a, b, c, d, e, f2(b, c, d), k2, w3 = left(w3 ^ w0 ^ w11 ^ w5));    Round(e, a, b, c, d, f2(a, b, c), k2, w4 = left(w4 ^ w1 ^ w12 ^ w6));    Round(d, e, a, b, c, f2(e, a, b), k2, w5 = left(w5 ^ w2 ^ w13 ^ w7));    Round(c, d, e, a, b, f2(d, e, a), k2, w6 = left(w6 ^ w3 ^ w14 ^ w8));    Round(b, c, d, e, a, f2(c, d, e), k2, w7 = left(w7 ^ w4 ^ w15 ^ w9));    Round(a, b, c, d, e, f3(b, c, d), k3, w8 = left(w8 ^ w5 ^ w0 ^ w10));    Round(e, a, b, c, d, f3(a, b, c), k3, w9 = left(w9 ^ w6 ^ w1 ^ w11));    Round(d, e, a, b, c, f3(e, a, b), k3, w10 = left(w10 ^ w7 ^ w2 ^ w12));    Round(c, d, e, a, b, f3(d, e, a), k3, w11 = left(w11 ^ w8 ^ w3 ^ w13));    Round(b, c, d, e, a, f3(c, d, e), k3, w12 = left(w12 ^ w9 ^ w4 ^ w14));    Round(a, b, c, d, e, f3(b, c, d), k3, w13 = left(w13 ^ w10 ^ w5 ^ w15));    Round(e, a, b, c, d, f3(a, b, c), k3, w14 = left(w14 ^ w11 ^ w6 ^ w0));    Round(d, e, a, b, c, f3(e, a, b), k3, w15 = left(w15 ^ w12 ^ w7 ^ w1));    Round(c, d, e, a, b, f3(d, e, a), k3, w0 = left(w0 ^ w13 ^ w8 ^ w2));    Round(b, c, d, e, a, f3(c, d, e), k3, w1 = left(w1 ^ w14 ^ w9 ^ w3));    Round(a, b, c, d, e, f3(b, c, d), k3, w2 = left(w2 ^ w15 ^ w10 ^ w4));    Round(e, a, b, c, d, f3(a, b, c), k3, w3 = left(w3 ^ w0 ^ w11 ^ w5));    Round(d, e, a, b, c, f3(e, a, b), k3, w4 = left(w4 ^ w1 ^ w12 ^ w6));    Round(c, d, e, a, b, f3(d, e, a), k3, w5 = left(w5 ^ w2 ^ w13 ^ w7));    Round(b, c, d, e, a, f3(c, d, e), k3, w6 = left(w6 ^ w3 ^ w14 ^ w8));    Round(a, b, c, d, e, f3(b, c, d), k3, w7 = left(w7 ^ w4 ^ w15 ^ w9));    Round(e, a, b, c, d, f3(a, b, c), k3, w8 = left(w8 ^ w5 ^ w0 ^ w10));    Round(d, e, a, b, c, f3(e, a, b), k3, w9 = left(w9 ^ w6 ^ w1 ^ w11));    Round(c, d, e, a, b, f3(d, e, a), k3, w10 = left(w10 ^ w7 ^ w2 ^ w12));    Round(b, c, d, e, a, f3(c, d, e), k3, w11 = left(w11 ^ w8 ^ w3 ^ w13));    Round(a, b, c, d, e, f2(b, c, d), k4, w12 = left(w12 ^ w9 ^ w4 ^ w14));    Round(e, a, b, c, d, f2(a, b, c), k4, w13 = left(w13 ^ w10 ^ w5 ^ w15));    Round(d, e, a, b, c, f2(e, a, b), k4, w14 = left(w14 ^ w11 ^ w6 ^ w0));    Round(c, d, e, a, b, f2(d, e, a), k4, w15 = left(w15 ^ w12 ^ w7 ^ w1));    Round(b, c, d, e, a, f2(c, d, e), k4, w0 = left(w0 ^ w13 ^ w8 ^ w2));    Round(a, b, c, d, e, f2(b, c, d), k4, w1 = left(w1 ^ w14 ^ w9 ^ w3));    Round(e, a, b, c, d, f2(a, b, c), k4, w2 = left(w2 ^ w15 ^ w10 ^ w4));    Round(d, e, a, b, c, f2(e, a, b), k4, w3 = left(w3 ^ w0 ^ w11 ^ w5));    Round(c, d, e, a, b, f2(d, e, a), k4, w4 = left(w4 ^ w1 ^ w12 ^ w6));    Round(b, c, d, e, a, f2(c, d, e), k4, w5 = left(w5 ^ w2 ^ w13 ^ w7));    Round(a, b, c, d, e, f2(b, c, d), k4, w6 = left(w6 ^ w3 ^ w14 ^ w8));    Round(e, a, b, c, d, f2(a, b, c), k4, w7 = left(w7 ^ w4 ^ w15 ^ w9));    Round(d, e, a, b, c, f2(e, a, b), k4, w8 = left(w8 ^ w5 ^ w0 ^ w10));    Round(c, d, e, a, b, f2(d, e, a), k4, w9 = left(w9 ^ w6 ^ w1 ^ w11));    Round(b, c, d, e, a, f2(c, d, e), k4, w10 = left(w10 ^ w7 ^ w2 ^ w12));    Round(a, b, c, d, e, f2(b, c, d), k4, w11 = left(w11 ^ w8 ^ w3 ^ w13));    Round(e, a, b, c, d, f2(a, b, c), k4, w12 = left(w12 ^ w9 ^ w4 ^ w14));    Round(d, e, a, b, c, f2(e, a, b), k4, left(w13 ^ w10 ^ w5 ^ w15));    Round(c, d, e, a, b, f2(d, e, a), k4, left(w14 ^ w11 ^ w6 ^ w0));    Round(b, c, d, e, a, f2(c, d, e), k4, left(w15 ^ w12 ^ w7 ^ w1));    s[0] += a;    s[1] += b;    s[2] += c;    s[3] += d;    s[4] += e;}} // namespace sha1} // namespace////// SHA1CSHA1::CSHA1() : bytes(0){    sha1::Initialize(s);}CSHA1& CSHA1::Write(const unsigned char* data, size_t len){    const unsigned char* end = data + len;    size_t bufsize = bytes % 64;    if (bufsize && bufsize + len >= 64) {        // Fill the buffer, and process it.        memcpy(buf + bufsize, data, 64 - bufsize);        bytes += 64 - bufsize;        data += 64 - bufsize;        sha1::Transform(s, buf);        bufsize = 0;    }    while (end - data >= 64) {        // Process full chunks directly from the source.        sha1::Transform(s, data);        bytes += 64;        data += 64;    }    if (end > data) {        // Fill the buffer with what remains.        memcpy(buf + bufsize, data, end - data);        bytes += end - data;    }    return *this;}void CSHA1::Finalize(unsigned char hash[OUTPUT_SIZE]){    static const unsigned char pad[64] = {0x80};    unsigned char sizedesc[8];    WriteBE64(sizedesc, bytes << 3);    Write(pad, 1 + ((119 - (bytes % 64)) % 64));    Write(sizedesc, 8);    WriteBE32(hash, s[0]);    WriteBE32(hash + 4, s[1]);    WriteBE32(hash + 8, s[2]);    WriteBE32(hash + 12, s[3]);    WriteBE32(hash + 16, s[4]);}CSHA1& CSHA1::Reset(){    bytes = 0;    sha1::Initialize(s);    return *this;}