sha512 first pass

This commit is contained in:
Sky Johnson 2025-09-06 19:02:03 -05:00
parent 53a84d3ca7
commit 9ad949a760
4 changed files with 182 additions and 480 deletions

View File

@ -1,264 +0,0 @@
// Copyright (C) 2007-2025 EQ2EMulator
// Licensed under GPL v3
#include <string.h> /* for memcpy() */
#include "md5.h"
#include "../MiscFunctions.h"
#include "../seperator.h"
MD5::MD5() {
memset(pMD5, 0, 16);
}
MD5::MD5(const uchar* buf, uint32 len) {
Generate(buf, len, pMD5);
}
MD5::MD5(const char* buf, uint32 len) {
Generate((const uchar*) buf, len, pMD5);
}
MD5::MD5(const int8 buf[16]) {
Set(buf);
}
MD5::MD5(const char* iMD5String) {
Set(iMD5String);
}
void MD5::Generate(const char* iString) {
Generate((const uchar*) iString, strlen(iString));
}
void MD5::Generate(const int8* buf, uint32 len) {
Generate(buf, len, pMD5);
}
bool MD5::Set(const int8 buf[16]) {
memcpy(pMD5, buf, 16);
return true;
}
bool MD5::Set(const char* iMD5String) {
char tmp[5] = { '0', 'x', 0, 0, 0 };
for (int i=0; i<16; i++) {
tmp[2] = iMD5String[i*2];
tmp[3] = iMD5String[(i*2) + 1];
if (!Seperator::IsHexNumber(tmp))
return false;
pMD5[i] = hextoi(tmp);
}
return true;
}
MD5::operator const char* () {
snprintf(pMD5String, sizeof(pMD5String), "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", pMD5[0], pMD5[1], pMD5[2], pMD5[3], pMD5[4], pMD5[5], pMD5[6], pMD5[7], pMD5[8], pMD5[9], pMD5[10], pMD5[11], pMD5[12], pMD5[13], pMD5[14], pMD5[15]);
return pMD5String;
}
bool MD5::operator== (const MD5& iMD5) {
if (memcmp(pMD5, iMD5.pMD5, 16) == 0)
return true;
else
return false;
}
bool MD5::operator== (const int8* iMD5) {
if (memcmp(pMD5, iMD5, 16) == 0)
return true;
else
return false;
}
bool MD5::operator== (const char* iMD5String) {
char tmp[5] = { '0', 'x', 0, 0, 0 };
for (int i=0; i<16; i++) {
tmp[2] = iMD5String[i*2];
tmp[3] = iMD5String[(i*2) + 1];
if (pMD5[i] != hextoi(tmp))
return false;
}
return true;
}
MD5& MD5::operator= (const MD5& iMD5) {
memcpy(pMD5, iMD5.pMD5, 16);
return *this;
}
MD5* MD5::operator= (const MD5* iMD5) {
memcpy(pMD5, iMD5->pMD5, 16);
return this;
}
/* Byte-swap an array of words to little-endian. (Byte-sex independent) */
void MD5::byteSwap(uint32 *buf, uint32 words) {
int8 *p = (int8 *)buf;
do {
*buf++ = (uint32)((uint32)p[3]<<8 | p[2]) << 16 |
((uint32)p[1]<<8 | p[0]);
p += 4;
} while (--words);
}
void MD5::Generate(const int8* buf, uint32 len, int8 digest[16]) {
MD5Context ctx;
Init(&ctx);
Update(&ctx, buf, len);
Final(digest, &ctx);
}
/* Start MD5 accumulation. */
void MD5::Init(struct MD5Context *ctx) {
ctx->hash[0] = 0x67452301;
ctx->hash[1] = 0xefcdab89;
ctx->hash[2] = 0x98badcfe;
ctx->hash[3] = 0x10325476;
ctx->bytes[1] = ctx->bytes[0] = 0;
}
/* Update ctx to reflect the addition of another buffer full of bytes. */
void MD5::Update(struct MD5Context *ctx, int8 const *buf, uint32 len) {
uint32 t = ctx->bytes[0];
if ((ctx->bytes[0] = t + len) < t) /* Update 64-bit byte count */
ctx->bytes[1]++; /* Carry from low to high */
t = 64 - (t & 0x3f); /* Bytes available in ctx->input (>= 1) */
if (t > len) {
memcpy((int8*)ctx->input+64-t, buf, len);
return;
}
/* First chunk is an odd size */
memcpy((int8*)ctx->input+64-t, buf, t);
byteSwap(ctx->input, 16);
Transform(ctx->hash, ctx->input);
buf += t;
len -= t;
/* Process data in 64-byte chunks */
while (len >= 64) {
memcpy(ctx->input, buf, 64);
byteSwap(ctx->input, 16);
Transform(ctx->hash, ctx->input);
buf += 64;
len -= 64;
}
/* Buffer any remaining bytes of data */
memcpy(ctx->input, buf, len);
}
/* Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, LSB-first) */
void MD5::Final(int8 digest[16], MD5Context *ctx) {
int count = ctx->bytes[0] & 0x3F; /* Bytes mod 64 */
int8 *p = (int8*)ctx->input + count;
/* Set the first byte of padding to 0x80. There is always room. */
*p++ = 0x80;
/* Bytes of zero padding needed to make 56 bytes (-8..55) */
count = 56 - 1 - count;
if (count < 0) { /* Padding forces an extra block */
memset(p, 0, count+8);
byteSwap(ctx->input, 16);
Transform(ctx->hash, ctx->input);
p = (int8*)ctx->input;
count = 56;
}
memset(p, 0, count);
byteSwap(ctx->input, 14);
/* Append 8 bytes of length in *bits* and transform */
ctx->input[14] = ctx->bytes[0] << 3;
ctx->input[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29;
Transform(ctx->hash, ctx->input);
byteSwap(ctx->hash, 4);
memcpy(digest, ctx->hash, 16);
memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */
}
/* The four core functions */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))
/* This is the central step in the MD5 algorithm. */
#define MD5STEP(f,w,x,y,z,in,s) (w += f(x,y,z)+in, w = (w<<s | w>>(32-s)) + x)
/* The heart of the MD5 algorithm. */
void MD5::Transform(uint32 hash[4], const uint32 input[16]) {
uint32 a = hash[0], b = hash[1], c = hash[2], d = hash[3];
MD5STEP(F1, a, b, c, d, input[ 0]+0xd76aa478, 7);
MD5STEP(F1, d, a, b, c, input[ 1]+0xe8c7b756, 12);
MD5STEP(F1, c, d, a, b, input[ 2]+0x242070db, 17);
MD5STEP(F1, b, c, d, a, input[ 3]+0xc1bdceee, 22);
MD5STEP(F1, a, b, c, d, input[ 4]+0xf57c0faf, 7);
MD5STEP(F1, d, a, b, c, input[ 5]+0x4787c62a, 12);
MD5STEP(F1, c, d, a, b, input[ 6]+0xa8304613, 17);
MD5STEP(F1, b, c, d, a, input[ 7]+0xfd469501, 22);
MD5STEP(F1, a, b, c, d, input[ 8]+0x698098d8, 7);
MD5STEP(F1, d, a, b, c, input[ 9]+0x8b44f7af, 12);
MD5STEP(F1, c, d, a, b, input[10]+0xffff5bb1, 17);
MD5STEP(F1, b, c, d, a, input[11]+0x895cd7be, 22);
MD5STEP(F1, a, b, c, d, input[12]+0x6b901122, 7);
MD5STEP(F1, d, a, b, c, input[13]+0xfd987193, 12);
MD5STEP(F1, c, d, a, b, input[14]+0xa679438e, 17);
MD5STEP(F1, b, c, d, a, input[15]+0x49b40821, 22);
MD5STEP(F2, a, b, c, d, input[ 1]+0xf61e2562, 5);
MD5STEP(F2, d, a, b, c, input[ 6]+0xc040b340, 9);
MD5STEP(F2, c, d, a, b, input[11]+0x265e5a51, 14);
MD5STEP(F2, b, c, d, a, input[ 0]+0xe9b6c7aa, 20);
MD5STEP(F2, a, b, c, d, input[ 5]+0xd62f105d, 5);
MD5STEP(F2, d, a, b, c, input[10]+0x02441453, 9);
MD5STEP(F2, c, d, a, b, input[15]+0xd8a1e681, 14);
MD5STEP(F2, b, c, d, a, input[ 4]+0xe7d3fbc8, 20);
MD5STEP(F2, a, b, c, d, input[ 9]+0x21e1cde6, 5);
MD5STEP(F2, d, a, b, c, input[14]+0xc33707d6, 9);
MD5STEP(F2, c, d, a, b, input[ 3]+0xf4d50d87, 14);
MD5STEP(F2, b, c, d, a, input[ 8]+0x455a14ed, 20);
MD5STEP(F2, a, b, c, d, input[13]+0xa9e3e905, 5);
MD5STEP(F2, d, a, b, c, input[ 2]+0xfcefa3f8, 9);
MD5STEP(F2, c, d, a, b, input[ 7]+0x676f02d9, 14);
MD5STEP(F2, b, c, d, a, input[12]+0x8d2a4c8a, 20);
MD5STEP(F3, a, b, c, d, input[ 5]+0xfffa3942, 4);
MD5STEP(F3, d, a, b, c, input[ 8]+0x8771f681, 11);
MD5STEP(F3, c, d, a, b, input[11]+0x6d9d6122, 16);
MD5STEP(F3, b, c, d, a, input[14]+0xfde5380c, 23);
MD5STEP(F3, a, b, c, d, input[ 1]+0xa4beea44, 4);
MD5STEP(F3, d, a, b, c, input[ 4]+0x4bdecfa9, 11);
MD5STEP(F3, c, d, a, b, input[ 7]+0xf6bb4b60, 16);
MD5STEP(F3, b, c, d, a, input[10]+0xbebfbc70, 23);
MD5STEP(F3, a, b, c, d, input[13]+0x289b7ec6, 4);
MD5STEP(F3, d, a, b, c, input[ 0]+0xeaa127fa, 11);
MD5STEP(F3, c, d, a, b, input[ 3]+0xd4ef3085, 16);
MD5STEP(F3, b, c, d, a, input[ 6]+0x04881d05, 23);
MD5STEP(F3, a, b, c, d, input[ 9]+0xd9d4d039, 4);
MD5STEP(F3, d, a, b, c, input[12]+0xe6db99e5, 11);
MD5STEP(F3, c, d, a, b, input[15]+0x1fa27cf8, 16);
MD5STEP(F3, b, c, d, a, input[ 2]+0xc4ac5665, 23);
MD5STEP(F4, a, b, c, d, input[ 0]+0xf4292244, 6);
MD5STEP(F4, d, a, b, c, input[ 7]+0x432aff97, 10);
MD5STEP(F4, c, d, a, b, input[14]+0xab9423a7, 15);
MD5STEP(F4, b, c, d, a, input[ 5]+0xfc93a039, 21);
MD5STEP(F4, a, b, c, d, input[12]+0x655b59c3, 6);
MD5STEP(F4, d, a, b, c, input[ 3]+0x8f0ccc92, 10);
MD5STEP(F4, c, d, a, b, input[10]+0xffeff47d, 15);
MD5STEP(F4, b, c, d, a, input[ 1]+0x85845dd1, 21);
MD5STEP(F4, a, b, c, d, input[ 8]+0x6fa87e4f, 6);
MD5STEP(F4, d, a, b, c, input[15]+0xfe2ce6e0, 10);
MD5STEP(F4, c, d, a, b, input[ 6]+0xa3014314, 15);
MD5STEP(F4, b, c, d, a, input[13]+0x4e0811a1, 21);
MD5STEP(F4, a, b, c, d, input[ 4]+0xf7537e82, 6);
MD5STEP(F4, d, a, b, c, input[11]+0xbd3af235, 10);
MD5STEP(F4, c, d, a, b, input[ 2]+0x2ad7d2bb, 15);
MD5STEP(F4, b, c, d, a, input[ 9]+0xeb86d391, 21);
hash[0] += a; hash[1] += b; hash[2] += c; hash[3] += d;
}

View File

@ -1,47 +0,0 @@
// Copyright (C) 2007-2025 EQ2EMulator
// Licensed under GPL v3
#ifndef MD5_H
#define MD5_H
#include "../common/types.h"
class MD5 {
public:
struct MD5Context {
uint32 hash[4];
uint32 bytes[2];
uint32 input[16];
};
static void Generate(const int8* buf, uint32 len, int8 digest[16]);
static void Init(struct MD5Context *context);
static void Update(struct MD5Context *context, const int8 *buf, uint32 len);
static void Final(int8 digest[16], struct MD5Context *context);
MD5();
MD5(const uchar* buf, uint32 len);
MD5(const char* buf, uint32 len);
MD5(const int8 buf[16]);
MD5(const char* iMD5String);
void Generate(const char* iString);
void Generate(const int8* buf, uint32 len);
bool Set(const int8 buf[16]);
bool Set(const char* iMD5String);
bool operator== (const MD5& iMD5);
bool operator== (const int8 iMD5[16]);
bool operator== (const char* iMD5String);
MD5& operator= (const MD5& iMD5);
MD5* operator= (const MD5* iMD5);
MD5* operator= (const int8* iMD5);
operator const char* ();
protected:
int8 pMD5[16];
private:
static void byteSwap(uint32 *buf, uint32 words);
static void Transform(uint32 hash[4], const int32 input[16]);
char pMD5String[33];
};
#endif

View File

@ -1,155 +1,165 @@
#include <cstring>
#include <fstream>
// Copyright (C) 2007-2025 EQ2EMulator
// Licensed under GPL v3
#include "sha512.h"
const unsigned long long 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(const unsigned char *message, unsigned int block_nb)
#include <algorithm>
#include <cstdio>
#include <cstring>
const std::array<SHA512::uint64, 80> SHA512::sha512_k{
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(const unsigned char* message, unsigned int block_nb) noexcept
{
uint64 w[80];
uint64 wv[8];
uint64 t1, t2;
const unsigned char *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];
}
}
std::array<uint64, 80> w{};
std::array<uint64, 8> wv{};
uint64 t1, t2;
const unsigned char* sub_block;
for (unsigned int i = 0; i < block_nb; ++i) {
sub_block = message + (i << 7);
for (int j = 0; j < 16; ++j) {
SHA2_PACK64(&sub_block[j << 3], &w[j]);
}
for (int j = 16; j < 80; ++j) {
w[j] = SHA512_F4(w[j - 2]) + w[j - 7] + SHA512_F3(w[j - 15]) + w[j - 16];
}
for (int j = 0; j < 8; ++j) {
wv[j] = m_h[j];
}
for (int 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 (int j = 0; j < 8; ++j) {
m_h[j] += wv[j];
}
}
}
void SHA512::init()
void SHA512::init() noexcept
{
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;
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(const unsigned char *message, unsigned int len)
void SHA512::update(const unsigned char* message, unsigned int len) noexcept
{
unsigned int block_nb;
unsigned int new_len, rem_len, tmp_len;
const unsigned char *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;
unsigned int block_nb;
unsigned int new_len, rem_len, tmp_len;
const unsigned char* shifted_message;
tmp_len = SHA384_512_BLOCK_SIZE - m_len;
rem_len = len < tmp_len ? len : tmp_len;
std::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.data(), 1);
transform(shifted_message, block_nb);
rem_len = new_len % SHA384_512_BLOCK_SIZE;
std::memcpy(m_block.data(), &shifted_message[block_nb << 7], rem_len);
m_len = rem_len;
m_tot_len += (block_nb + 1) << 7;
}
void SHA512::final(unsigned char *digest)
void SHA512::final(unsigned char* digest) noexcept
{
unsigned int block_nb;
unsigned int pm_len;
unsigned int 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]);
}
unsigned int block_nb;
unsigned int pm_len;
unsigned int len_b;
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;
std::memset(m_block.data() + m_len, 0, pm_len - m_len);
m_block[m_len] = 0x80;
SHA2_UNPACK32(len_b, m_block.data() + pm_len - 4);
transform(m_block.data(), block_nb);
for (int i = 0; i < 8; ++i) {
SHA2_UNPACK64(m_h[i], &digest[i << 3]);
}
}
std::string sha512(std::string input)
std::string sha512(std::string_view input) noexcept
{
unsigned char digest[SHA512::DIGEST_SIZE];
memset(digest,0,SHA512::DIGEST_SIZE);
SHA512 ctx = SHA512();
ctx.init();
ctx.update((unsigned char*)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);
}
std::array<unsigned char, SHA512::DIGEST_SIZE> digest{};
SHA512 ctx;
ctx.init();
ctx.update(reinterpret_cast<const unsigned char*>(input.data()), static_cast<unsigned int>(input.length()));
ctx.final(digest.data());
std::array<char, 2 * SHA512::DIGEST_SIZE + 1> buf{};
for (int i = 0; i < SHA512::DIGEST_SIZE; ++i) {
std::sprintf(buf.data() + i * 2, "%02x", digest[i]);
}
return std::string{buf.data()};
}

View File

@ -1,33 +1,36 @@
#ifndef SHA512_H
#define SHA512_H
#pragma once
#include <array>
#include <cstdint>
#include <string>
#include <string_view>
class SHA512
{
protected:
typedef unsigned char uint8;
typedef unsigned int uint32;
typedef unsigned long long uint64;
const static uint64 sha512_k[];
static const unsigned int SHA384_512_BLOCK_SIZE = (1024/8);
public:
void init();
void update(const unsigned char *message, unsigned int len);
void final(unsigned char *digest);
static const unsigned int DIGEST_SIZE = ( 512 / 8);
static constexpr unsigned int DIGEST_SIZE = 512 / 8;
static constexpr unsigned int SHA384_512_BLOCK_SIZE = 1024 / 8;
void init() noexcept;
void update(const unsigned char* message, unsigned int len) noexcept;
void final(unsigned char* digest) noexcept;
protected:
void transform(const unsigned char *message, unsigned int block_nb);
unsigned int m_tot_len;
unsigned int m_len;
unsigned char m_block[2 * SHA384_512_BLOCK_SIZE];
uint64 m_h[8];
using uint8 = std::uint8_t;
using uint32 = std::uint32_t;
using uint64 = std::uint64_t;
static const std::array<uint64, 80> sha512_k;
void transform(const unsigned char* message, unsigned int block_nb) noexcept;
unsigned int m_tot_len{};
unsigned int m_len{};
std::array<unsigned char, 2 * SHA384_512_BLOCK_SIZE> m_block{};
std::array<uint64, 8> m_h{};
};
std::string sha512(std::string input);
[[nodiscard]] std::string sha512(std::string_view input) noexcept;
#define SHA2_SHFR(x, n) (x >> n)
#define SHA2_ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n)))