求一个 sha512算法。 谢谢 50分。

yize.link 2009-01-21 12:25:53
求一个 sha512算法。 谢谢 50分。
求一个 sha512算法。 谢谢 50分。
求一个 sha512算法。 谢谢 50分。
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waizqfor 2009-01-21
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C#的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;

namespace MD5Test
{
class Program
{
//MD5 16位加密
public static string md5Encode16(string source)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(source)), 4, 8);
return t2;
}
//MD5 32位加密
public static string md5Encode32(string source)
{
string cl = source;
string pwd = "";
MD5 md5 = MD5.Create();//实例化一个md5对像
// 加密后是一个字节类型的数组,这里要注意编码UTF8/Unicode等的选择 
byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(cl));
// 通过使用循环,将字节类型的数组转换为字符串,此字符串是常规字符格式化所得
for (int i = 0; i < s.Length; i++)
{
// 将得到的字符串使用十六进制类型格式化。'x'格式化后的字符是小写字母,如果使用大写'X',则格式后的字符是大写字符
pwd = pwd + s[i].ToString("X");
}
return pwd;
}
//SHA 512位加密
public static string sha512Encode(string source)
{
string result = "";
SHA512 sha512 = new SHA512Managed();
byte[] s = sha512.ComputeHash(Encoding.UTF8.GetBytes(source));
for (int i = 0; i < s.Length; i++)
{
result += s[i].ToString("X");
}
sha512.Clear();
return result;
}
static void Main(string[] args)
{
Console.WriteLine("Hello World! MD5 16 Encode: " + md5Encode16("Hello World!"));
Console.WriteLine("Hello World! MD5 32 Encode: " + md5Encode32("Hello World!"));
Console.WriteLine("Hello World! SHA 512 Encode: " + sha512Encode("Hello World!"));
}
}
}
xiaoyisnail 2009-01-21
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星羽 2009-01-21
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string Sha512::calcSha384(const string &filename, int *commSocket)
{
FILE *fd;
struct stat file_stat;
size_t read;
unsigned int bufSize;
off_t fileSize, i;
uint8_t ret[SHA384_DIGEST_SIZE];
struct sha512_ctx ctx;

if (unlikely(stat(filename.c_str(), &file_stat)))
return "";
fd = fopen(filename.c_str(), "r");
if (unlikely(!fd))
return "";

fileSize = file_stat.st_size;
string progrTmp(string("S") + tostr(fileSize) + '\n');
ThreadComm comm(commSocket);
comm.send(&progrTmp);

sha384_init(&ctx);

bufSize = calcBufSize(file_stat);
char *buf = new char[bufSize];
i = 0;
while (i < fileSize) {
read = fread(buf, 1, bufSize, fd);
i += read;
sha512_update(&ctx, reinterpret_cast<const uint8_t *>(buf),
read);

progrTmp = tostr(i) + '\n';
comm.send(&progrTmp);
}
fclose(fd);
delete [] buf;

sha384_final(&ctx, ret);

return charToHex(reinterpret_cast<const char *>(ret),
SHA384_DIGEST_SIZE);
}

string Sha512::calcSha512(const string &buf)
{
uint8_t ret[SHA512_DIGEST_SIZE];
struct sha512_ctx ctx;

sha512_init(&ctx);
sha512_update(&ctx, reinterpret_cast<const uint8_t *>(buf.c_str()),
static_cast<unsigned int>(buf.length()));
sha512_final(&ctx, ret);

return charToHex(reinterpret_cast<const char *>(ret),
SHA512_DIGEST_SIZE);
}

string Sha512::calcSha512(const string &filename, int *commSocket)
{
FILE *fd;
struct stat file_stat;
size_t read;
unsigned int bufSize;
off_t fileSize, i;
uint8_t ret[SHA512_DIGEST_SIZE];
struct sha512_ctx ctx;

if (unlikely(stat(filename.c_str(), &file_stat)))
return "";
fd = fopen(filename.c_str(), "r");
if (unlikely(!fd))
return "";

fileSize = file_stat.st_size;
string progrTmp(string("S") + tostr(fileSize) + '\n');
ThreadComm comm(commSocket);
comm.send(&progrTmp);

sha512_init(&ctx);

bufSize = calcBufSize(file_stat);
char *buf = new char[bufSize];
i = 0;
while (i < fileSize) {
read = fread(buf, 1, bufSize, fd);
i += read;
sha512_update(&ctx, reinterpret_cast<const uint8_t *>(buf),
read);

progrTmp = tostr(i) + '\n';
comm.send(&progrTmp);
}
fclose(fd);
delete [] buf;

sha512_final(&ctx, ret);

return charToHex(reinterpret_cast<const char *>(ret),
SHA512_DIGEST_SIZE);
星羽 2009-01-21
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void Sha512::sha384_init(struct sha512_ctx *ctx)
{
struct sha512_ctx *sctx = ctx;
sctx->state[0] = SHA512HP0;
sctx->state[1] = SHA512HP1;
sctx->state[2] = SHA512HP2;
sctx->state[3] = SHA512HP3;
sctx->state[4] = SHA512HP4;
sctx->state[5] = SHA512HP5;
sctx->state[6] = SHA512HP6;
sctx->state[7] = SHA512HP7;
sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
memset(sctx->buf, 0, sizeof(sctx->buf));
}

void Sha512::sha512_update(struct sha512_ctx *ctx, const uint8_t *data, unsigned int len)
{
struct sha512_ctx *sctx = ctx;

unsigned int i, index, part_len;

/* Compute number of bytes mod 128 */
index = (unsigned int)((sctx->count[0] >> 3) & 0x7F);

/* Update number of bits */
if ((sctx->count[0] += (len << 3)) < (len << 3)) {
if ((sctx->count[1] += 1) < 1)
if ((sctx->count[2] += 1) < 1)
sctx->count[3]++;
sctx->count[1] += (len >> 29);
}

part_len = 128 - index;

/* Transform as many times as possible. */
if (len >= part_len) {
memcpy(&sctx->buf[index], data, part_len);
sha512_transform(sctx->state, sctx->buf);

for (i = part_len; i + 127 < len; i+=128)
sha512_transform(sctx->state, &data[i]);

index = 0;
} else {
i = 0;
}

/* Buffer remaining input */
memcpy(&sctx->buf[index], &data[i], len - i);
}

void Sha512::sha512_final(struct sha512_ctx *ctx, uint8_t *hash)
{
struct sha512_ctx *sctx = ctx;

static const uint8_t padding[128] = { 0x80, };

uint32_t t;
uint64_t t2;
uint8_t bits[128];
unsigned int index, pad_len;
int i, j;

index = pad_len = t = i = j = 0;
t2 = 0;

/* Save number of bits */
t = sctx->count[0];
bits[15] = t; t>>=8;
bits[14] = t; t>>=8;
bits[13] = t; t>>=8;
bits[12] = t;
t = sctx->count[1];
bits[11] = t; t>>=8;
bits[10] = t; t>>=8;
bits[9 ] = t; t>>=8;
bits[8 ] = t;
t = sctx->count[2];
bits[7 ] = t; t>>=8;
bits[6 ] = t; t>>=8;
bits[5 ] = t; t>>=8;
bits[4 ] = t;
t = sctx->count[3];
bits[3 ] = t; t>>=8;
bits[2 ] = t; t>>=8;
bits[1 ] = t; t>>=8;
bits[0 ] = t;

/* Pad out to 112 mod 128. */
index = (sctx->count[0] >> 3) & 0x7f;
pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
sha512_update(sctx, padding, pad_len);

/* Append length (before padding) */
sha512_update(sctx, bits, 16);

/* Store state in digest */
for (i = j = 0; i < 8; i++, j += 8) {
t2 = sctx->state[i];
hash[j+7] = (char)t2 & 0xff; t2>>=8;
hash[j+6] = (char)t2 & 0xff; t2>>=8;
hash[j+5] = (char)t2 & 0xff; t2>>=8;
hash[j+4] = (char)t2 & 0xff; t2>>=8;
hash[j+3] = (char)t2 & 0xff; t2>>=8;
hash[j+2] = (char)t2 & 0xff; t2>>=8;
hash[j+1] = (char)t2 & 0xff; t2>>=8;
hash[j ] = (char)t2 & 0xff;
}

/* Zeroize sensitive information. */
memset(sctx, 0, sizeof(struct sha512_ctx));
}

void Sha512::sha384_final(struct sha512_ctx *ctx, uint8_t *hash)
{
struct sha512_ctx *sctx = ctx;
uint8_t D[64];

sha512_final(sctx, D);

memcpy(hash, D, 48);
memset(D, 0, 64);
}

bool Sha512::selfTest()
{
Sha512 sha512;

if (unlikely(!sha512.sha384_selfTest()))
return false;
if (unlikely(!sha512.sha512_selfTest()))
return false;

return true;
}

bool Sha512::sha384_selfTest()
{
string test1("abc");
string test1_md("CB00753F45A35E8BB5A03D699AC65007"
"272C32AB0EDED1631A8B605A43FF5BED"
"8086072BA1E7CC2358BAECA134C825A7");
string test2("abcdbcdecdefdefgefghfghighij"
"hijkijkljklmklmnlmnomnopnopq");
string test2_md("3391FDDDFC8DC7393707A65B1B470939"
"7CF8B1D162AF05ABFE8F450DE5F36BC6"
"B0455A8520BC4E6F5FE95B1FE3C8452B");
string test3("abcdefghbcdefghicdefghijdefg"
"hijkefghijklfghijklmghijklmn"
"hijklmnoijklmnopjklmnopqklmn"
"opqrlmnopqrsmnopqrstnopqrstu");
string test3_md("09330C33F71147E83D192FC782CD1B47"
"53111B173B3B05D22FA08086E3B0F712"
"FCC7C71A557E2DB966C3E9FA91746039");
string test4("abcdefghijklmnopqrstuvwxyzab"
"cdefghijklmnopqrstuvwxyzabcd"
"efghijklmnopqrstuvwxyzabcdef"
"ghijklmnopqrstuvwxyz");
string test4_md("3D208973AB3508DBBD7E2C2862BA290A"
"D3010E4978C198DC4D8FD014E582823A"
"89E16F9B2A7BBC1AC938E2D199E8BEA4");

if (unlikely(calcSha384(test1) != test1_md))
return false;
if (unlikely(calcSha384(test2) != test2_md))
return false;
if (unlikely(calcSha384(test3) != test3_md))
return false;
if (unlikely(calcSha384(test4) != test4_md))
return false;

return true;
}

bool Sha512::sha512_selfTest()
{
string test1("abc");
string test1_md("DDAF35A193617ABACC417349AE204131"
"12E6FA4E89A97EA20A9EEEE64B55D39A"
"2192992A274FC1A836BA3C23A3FEEBBD"
"454D4423643CE80E2A9AC94FA54CA49F");
string test2("abcdbcdecdefdefgefghfghighij"
"hijkijkljklmklmnlmnomnopnopq");
string test2_md("204A8FC6DDA82F0A0CED7BEB8E08A416"
"57C16EF468B228A8279BE331A703C335"
"96FD15C13B1B07F9AA1D3BEA57789CA0"
"31AD85C7A71DD70354EC631238CA3445");
string test3("abcdefghbcdefghicdefghijdefg"
"hijkefghijklfghijklmghijklmn"
"hijklmnoijklmnopjklmnopqklmn"
"opqrlmnopqrsmnopqrstnopqrstu");
string test3_md("8E959B75DAE313DA8CF4F72814FC143F"
"8F7779C6EB9F7FA17299AEADB6889018"
"501D289E4900F7E4331B99DEC4B5433A"
"C7D329EEB6DD26545E96E55B874BE909");
string test4("abcdefghijklmnopqrstuvwxyzab"
"cdefghijklmnopqrstuvwxyzabcd"
"efghijklmnopqrstuvwxyzabcdef"
"ghijklmnopqrstuvwxyz");
string test4_md("930D0CEFCB30FF1133B6898121F1CF3D"
"27578AFCAFE8677C5257CF069911F75D"
"8F5831B56EBFDA67B278E66DFF8B84FE"
"2B2870F742A580D8EDB41987232850C9");

if (unlikely(calcSha512(test1) != test1_md))
return false;
if (unlikely(calcSha512(test2) != test2_md))
return false;
if (unlikely(calcSha512(test3) != test3_md))
return false;
if (unlikely(calcSha512(test4) != test4_md))
return false;

return true;
}

string Sha512::calcSha384(const string &buf)
{
uint8_t ret[SHA384_DIGEST_SIZE];
struct sha512_ctx ctx;

sha384_init(&ctx);
sha512_update(&ctx, reinterpret_cast<const uint8_t *>(buf.c_str()),
static_cast<unsigned int>(buf.length()));
sha384_final(&ctx, ret);

return charToHex(reinterpret_cast<const char *>(ret),
SHA384_DIGEST_SIZE);
}
星羽 2009-01-21
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.cpp

/

#include "sha512.h"
#include "threadcomm.h"

#include <stdio.h>
#include <sys/stat.h>

#define SHA384_DIGEST_SIZE 48
#define SHA512_DIGEST_SIZE 64
#define SHA384_HMAC_BLOCK_SIZE 96
#define SHA512_HMAC_BLOCK_SIZE 128

static const uint64_t sha512_K[80] = {
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,
};

#define SHA512e0(x) (RORuint64_t(x,28) ^ RORuint64_t(x,34) ^ RORuint64_t(x,39))
#define SHA512e1(x) (RORuint64_t(x,14) ^ RORuint64_t(x,18) ^ RORuint64_t(x,41))
#define SHA512s0(x) (RORuint64_t(x, 1) ^ RORuint64_t(x, 8) ^ (x >> 7))
#define SHA512s1(x) (RORuint64_t(x,19) ^ RORuint64_t(x,61) ^ (x >> 6))

/* H* initial state for SHA-512 */
#define SHA512H0 0x6a09e667f3bcc908ULL
#define SHA512H1 0xbb67ae8584caa73bULL
#define SHA512H2 0x3c6ef372fe94f82bULL
#define SHA512H3 0xa54ff53a5f1d36f1ULL
#define SHA512H4 0x510e527fade682d1ULL
#define SHA512H5 0x9b05688c2b3e6c1fULL
#define SHA512H6 0x1f83d9abfb41bd6bULL
#define SHA512H7 0x5be0cd19137e2179ULL

/* H'* initial state for SHA-384 */
#define SHA512HP0 0xcbbb9d5dc1059ed8ULL
#define SHA512HP1 0x629a292a367cd507ULL
#define SHA512HP2 0x9159015a3070dd17ULL
#define SHA512HP3 0x152fecd8f70e5939ULL
#define SHA512HP4 0x67332667ffc00b31ULL
#define SHA512HP5 0x8eb44a8768581511ULL
#define SHA512HP6 0xdb0c2e0d64f98fa7ULL
#define SHA512HP7 0x47b5481dbefa4fa4ULL

void Sha512::LOAD_OP(int I, uint64_t *W, const uint8_t *input)
{
uint64_t t1 = input[(8*I) ] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+1] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+2] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+3] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+4] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+5] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+6] & 0xff;
t1 <<= 8;
t1 |= input[(8*I)+7] & 0xff;
W[I] = t1;
}

void Sha512::BLEND_OP(int I, uint64_t *W)
{
W[I] = SHA512s1(W[I-2]) + W[I-7] + SHA512s0(W[I-15]) + W[I-16];
}

void Sha512::sha512_transform(uint64_t *state, const uint8_t *input)
{
uint64_t a, b, c, d, e, f, g, h, t1, t2;
uint64_t W[80];

int i;

/* load the input */
for (i = 0; i < 16; i++)
LOAD_OP(i, W, input);

for (i = 16; i < 80; i++) {
BLEND_OP(i, W);
}

/* load the state into our registers */
a=state[0]; b=state[1]; c=state[2]; d=state[3];
e=state[4]; f=state[5]; g=state[6]; h=state[7];

/* now iterate */
for (i=0; i<80; i+=8) {
t1 = h + SHA512e1(e) + Ch(e,f,g) + sha512_K[i ] + W[i ];
t2 = SHA512e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
t1 = g + SHA512e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[i+1];
t2 = SHA512e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
t1 = f + SHA512e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[i+2];
t2 = SHA512e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
t1 = e + SHA512e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[i+3];
t2 = SHA512e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
t1 = d + SHA512e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[i+4];
t2 = SHA512e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
t1 = c + SHA512e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[i+5];
t2 = SHA512e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
t1 = b + SHA512e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[i+6];
t2 = SHA512e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
t1 = a + SHA512e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[i+7];
t2 = SHA512e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
}

state[0] += a; state[1] += b; state[2] += c; state[3] += d;
state[4] += e; state[5] += f; state[6] += g; state[7] += h;

/* erase our data */
a = b = c = d = e = f = g = h = t1 = t2 = 0;
memset(W, 0, 80 * sizeof(uint64_t));
}

void Sha512::sha512_init(struct sha512_ctx *ctx)
{
struct sha512_ctx *sctx = ctx;
sctx->state[0] = SHA512H0;
sctx->state[1] = SHA512H1;
sctx->state[2] = SHA512H2;
sctx->state[3] = SHA512H3;
sctx->state[4] = SHA512H4;
sctx->state[5] = SHA512H5;
sctx->state[6] = SHA512H6;
sctx->state[7] = SHA512H7;
sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
memset(sctx->buf, 0, sizeof(sctx->buf));
}

星羽 2009-01-21
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.h


/***************************************************************************
* *
* copyright (C) 2003, 2004 by Michael Buesch *
* email: mbuesch@freenet.de *
* *
* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com> *
* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com> *
* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk> *
* Copyright (c) 2003 Kyle McMartin <kyle@debian.org> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License version 2 *
* as published by the Free Software Foundation. *
* *
***************************************************************************/

#ifndef SHA512_H
#define SHA512_H

#include "globalstuff.h"

#include <stdint.h>
#include <string>
using std::string;


/** SHA512 and SHA384 hash algorithms */
class Sha512
{
struct sha512_ctx
{
uint64_t state[8];
uint32_t count[4];
uint8_t buf[128];
};

public:
Sha512() {}
virtual ~Sha512() {}
static bool selfTest();

string calcSha384(const string &buf);
string calcSha384(const string &filename, int *commSocket);

string calcSha512(const string &buf);
string calcSha512(const string &filename, int *commSocket);

protected:
uint64_t Ch(uint64_t x, uint64_t y, uint64_t z)
{ return ((x & y) ^ (~x & z)); }
uint64_t Maj(uint64_t x, uint64_t y, uint64_t z)
{ return ((x & y) ^ (x & z) ^ (y & z)); }
uint64_t RORuint64_t(uint64_t x, uint64_t y)
{ return (x >> y) | (x << (64 - y)); }
inline void LOAD_OP(int I, uint64_t *W, const uint8_t *input);
inline void BLEND_OP(int I, uint64_t *W);
void sha512_transform(uint64_t *state, const uint8_t *input);
void sha512_init(struct sha512_ctx *ctx);
void sha384_init(struct sha512_ctx *ctx);
void sha512_update(struct sha512_ctx *ctx, const uint8_t *data, unsigned int len);
void sha512_final(struct sha512_ctx *ctx, uint8_t *hash);
void sha384_final(struct sha512_ctx *ctx, uint8_t *hash);
bool sha384_selfTest();
bool sha512_selfTest();
};

#endif

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