RIPEMD160HashProvider
namespace SshNet.Security.Cryptography
{
internal class RIPEMD160HashProvider : HashProviderBase
{
private const int DigestSize = 20;
private readonly byte[] _buffer;
private int _bufferOffset;
private long _byteCount;
private int _offset;
private int H0;
private int H1;
private int H2;
private int H3;
private int H4;
private readonly int[] X = new int[16];
public override int HashSize => 160;
public override int InputBlockSize => 64;
public override int OutputBlockSize => 64;
public RIPEMD160HashProvider()
{
_buffer = new byte[4];
InternalInitialize();
}
public override void HashCore(byte[] array, int ibStart, int cbSize)
{
while (_bufferOffset != 0 && cbSize > 0) {
Update(array[ibStart]);
ibStart++;
cbSize--;
}
while (cbSize > _buffer.Length) {
ProcessWord(array, ibStart);
ibStart += _buffer.Length;
cbSize -= _buffer.Length;
_byteCount += _buffer.Length;
}
while (cbSize > 0) {
Update(array[ibStart]);
ibStart++;
cbSize--;
}
}
public override byte[] HashFinal()
{
byte[] array = new byte[20];
long bitLength = _byteCount << 3;
Update(128);
while (_bufferOffset != 0) {
Update(0);
}
ProcessLength(bitLength);
ProcessBlock();
UnpackWord(H0, array, 0);
UnpackWord(H1, array, 4);
UnpackWord(H2, array, 8);
UnpackWord(H3, array, 12);
UnpackWord(H4, array, 16);
InternalInitialize();
return array;
}
public override void Initialize()
{
InternalInitialize();
}
private void ProcessWord(byte[] input, int inOff)
{
X[_offset++] = ((input[inOff] & 255) | ((input[inOff + 1] & 255) << 8) | ((input[inOff + 2] & 255) << 16) | ((input[inOff + 3] & 255) << 24));
if (_offset == 16)
ProcessBlock();
}
private void ProcessLength(long bitLength)
{
if (_offset > 14)
ProcessBlock();
X[14] = (int)(bitLength & uint.MaxValue);
X[15] = (int)((ulong)bitLength >> 32);
}
private void UnpackWord(int word, byte[] outBytes, int outOff)
{
outBytes[outOff] = (byte)word;
outBytes[outOff + 1] = (byte)((uint)word >> 8);
outBytes[outOff + 2] = (byte)((uint)word >> 16);
outBytes[outOff + 3] = (byte)((uint)word >> 24);
}
private void Update(byte input)
{
_buffer[_bufferOffset++] = input;
if (_bufferOffset == _buffer.Length) {
ProcessWord(_buffer, 0);
_bufferOffset = 0;
}
_byteCount++;
}
private void InternalInitialize()
{
_byteCount = 0;
_bufferOffset = 0;
for (int i = 0; i < _buffer.Length; i++) {
_buffer[i] = 0;
}
H0 = 1732584193;
H1 = -271733879;
H2 = -1732584194;
H3 = 271733878;
H4 = -1009589776;
_offset = 0;
for (int j = 0; j != X.Length; j++) {
X[j] = 0;
}
}
private int RL(int x, int n)
{
return (x << n) | (int)((uint)x >> 32 - n);
}
private int F1(int x, int y, int z)
{
return x ^ y ^ z;
}
private int F2(int x, int y, int z)
{
return (x & y) | (~x & z);
}
private int F3(int x, int y, int z)
{
return (x | ~y) ^ z;
}
private int F4(int x, int y, int z)
{
return (x & z) | (y & ~z);
}
private int F5(int x, int y, int z)
{
return x ^ (y | ~z);
}
private void ProcessBlock()
{
int h;
int num = h = H0;
int h2;
int num2 = h2 = H1;
int h3;
int num3 = h3 = H2;
int h4;
int num4 = h4 = H3;
int h5;
int num5 = h5 = H4;
num = RL(num + F1(num2, num3, num4) + X[0], 11) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F1(num, num2, num3) + X[1], 14) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F1(num5, num, num2) + X[2], 15) + num3;
num = RL(num, 10);
num3 = RL(num3 + F1(num4, num5, num) + X[3], 12) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F1(num3, num4, num5) + X[4], 5) + num;
num4 = RL(num4, 10);
num = RL(num + F1(num2, num3, num4) + X[5], 8) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F1(num, num2, num3) + X[6], 7) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F1(num5, num, num2) + X[7], 9) + num3;
num = RL(num, 10);
num3 = RL(num3 + F1(num4, num5, num) + X[8], 11) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F1(num3, num4, num5) + X[9], 13) + num;
num4 = RL(num4, 10);
num = RL(num + F1(num2, num3, num4) + X[10], 14) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F1(num, num2, num3) + X[11], 15) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F1(num5, num, num2) + X[12], 6) + num3;
num = RL(num, 10);
num3 = RL(num3 + F1(num4, num5, num) + X[13], 7) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F1(num3, num4, num5) + X[14], 9) + num;
num4 = RL(num4, 10);
num = RL(num + F1(num2, num3, num4) + X[15], 8) + num5;
num3 = RL(num3, 10);
h = RL(h + F5(h2, h3, h4) + X[5] + 1352829926, 8) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F5(h, h2, h3) + X[14] + 1352829926, 9) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F5(h5, h, h2) + X[7] + 1352829926, 9) + h3;
h = RL(h, 10);
h3 = RL(h3 + F5(h4, h5, h) + X[0] + 1352829926, 11) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F5(h3, h4, h5) + X[9] + 1352829926, 13) + h;
h4 = RL(h4, 10);
h = RL(h + F5(h2, h3, h4) + X[2] + 1352829926, 15) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F5(h, h2, h3) + X[11] + 1352829926, 15) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F5(h5, h, h2) + X[4] + 1352829926, 5) + h3;
h = RL(h, 10);
h3 = RL(h3 + F5(h4, h5, h) + X[13] + 1352829926, 7) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F5(h3, h4, h5) + X[6] + 1352829926, 7) + h;
h4 = RL(h4, 10);
h = RL(h + F5(h2, h3, h4) + X[15] + 1352829926, 8) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F5(h, h2, h3) + X[8] + 1352829926, 11) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F5(h5, h, h2) + X[1] + 1352829926, 14) + h3;
h = RL(h, 10);
h3 = RL(h3 + F5(h4, h5, h) + X[10] + 1352829926, 14) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F5(h3, h4, h5) + X[3] + 1352829926, 12) + h;
h4 = RL(h4, 10);
h = RL(h + F5(h2, h3, h4) + X[12] + 1352829926, 6) + h5;
h3 = RL(h3, 10);
num5 = RL(num5 + F2(num, num2, num3) + X[7] + 1518500249, 7) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F2(num5, num, num2) + X[4] + 1518500249, 6) + num3;
num = RL(num, 10);
num3 = RL(num3 + F2(num4, num5, num) + X[13] + 1518500249, 8) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F2(num3, num4, num5) + X[1] + 1518500249, 13) + num;
num4 = RL(num4, 10);
num = RL(num + F2(num2, num3, num4) + X[10] + 1518500249, 11) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F2(num, num2, num3) + X[6] + 1518500249, 9) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F2(num5, num, num2) + X[15] + 1518500249, 7) + num3;
num = RL(num, 10);
num3 = RL(num3 + F2(num4, num5, num) + X[3] + 1518500249, 15) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F2(num3, num4, num5) + X[12] + 1518500249, 7) + num;
num4 = RL(num4, 10);
num = RL(num + F2(num2, num3, num4) + X[0] + 1518500249, 12) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F2(num, num2, num3) + X[9] + 1518500249, 15) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F2(num5, num, num2) + X[5] + 1518500249, 9) + num3;
num = RL(num, 10);
num3 = RL(num3 + F2(num4, num5, num) + X[2] + 1518500249, 11) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F2(num3, num4, num5) + X[14] + 1518500249, 7) + num;
num4 = RL(num4, 10);
num = RL(num + F2(num2, num3, num4) + X[11] + 1518500249, 13) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F2(num, num2, num3) + X[8] + 1518500249, 12) + num4;
num2 = RL(num2, 10);
h5 = RL(h5 + F4(h, h2, h3) + X[6] + 1548603684, 9) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F4(h5, h, h2) + X[11] + 1548603684, 13) + h3;
h = RL(h, 10);
h3 = RL(h3 + F4(h4, h5, h) + X[3] + 1548603684, 15) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F4(h3, h4, h5) + X[7] + 1548603684, 7) + h;
h4 = RL(h4, 10);
h = RL(h + F4(h2, h3, h4) + X[0] + 1548603684, 12) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F4(h, h2, h3) + X[13] + 1548603684, 8) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F4(h5, h, h2) + X[5] + 1548603684, 9) + h3;
h = RL(h, 10);
h3 = RL(h3 + F4(h4, h5, h) + X[10] + 1548603684, 11) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F4(h3, h4, h5) + X[14] + 1548603684, 7) + h;
h4 = RL(h4, 10);
h = RL(h + F4(h2, h3, h4) + X[15] + 1548603684, 7) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F4(h, h2, h3) + X[8] + 1548603684, 12) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F4(h5, h, h2) + X[12] + 1548603684, 7) + h3;
h = RL(h, 10);
h3 = RL(h3 + F4(h4, h5, h) + X[4] + 1548603684, 6) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F4(h3, h4, h5) + X[9] + 1548603684, 15) + h;
h4 = RL(h4, 10);
h = RL(h + F4(h2, h3, h4) + X[1] + 1548603684, 13) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F4(h, h2, h3) + X[2] + 1548603684, 11) + h4;
h2 = RL(h2, 10);
num4 = RL(num4 + F3(num5, num, num2) + X[3] + 1859775393, 11) + num3;
num = RL(num, 10);
num3 = RL(num3 + F3(num4, num5, num) + X[10] + 1859775393, 13) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F3(num3, num4, num5) + X[14] + 1859775393, 6) + num;
num4 = RL(num4, 10);
num = RL(num + F3(num2, num3, num4) + X[4] + 1859775393, 7) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F3(num, num2, num3) + X[9] + 1859775393, 14) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F3(num5, num, num2) + X[15] + 1859775393, 9) + num3;
num = RL(num, 10);
num3 = RL(num3 + F3(num4, num5, num) + X[8] + 1859775393, 13) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F3(num3, num4, num5) + X[1] + 1859775393, 15) + num;
num4 = RL(num4, 10);
num = RL(num + F3(num2, num3, num4) + X[2] + 1859775393, 14) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F3(num, num2, num3) + X[7] + 1859775393, 8) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F3(num5, num, num2) + X[0] + 1859775393, 13) + num3;
num = RL(num, 10);
num3 = RL(num3 + F3(num4, num5, num) + X[6] + 1859775393, 6) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F3(num3, num4, num5) + X[13] + 1859775393, 5) + num;
num4 = RL(num4, 10);
num = RL(num + F3(num2, num3, num4) + X[11] + 1859775393, 12) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F3(num, num2, num3) + X[5] + 1859775393, 7) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F3(num5, num, num2) + X[12] + 1859775393, 5) + num3;
num = RL(num, 10);
h4 = RL(h4 + F3(h5, h, h2) + X[15] + 1836072691, 9) + h3;
h = RL(h, 10);
h3 = RL(h3 + F3(h4, h5, h) + X[5] + 1836072691, 7) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F3(h3, h4, h5) + X[1] + 1836072691, 15) + h;
h4 = RL(h4, 10);
h = RL(h + F3(h2, h3, h4) + X[3] + 1836072691, 11) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F3(h, h2, h3) + X[7] + 1836072691, 8) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F3(h5, h, h2) + X[14] + 1836072691, 6) + h3;
h = RL(h, 10);
h3 = RL(h3 + F3(h4, h5, h) + X[6] + 1836072691, 6) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F3(h3, h4, h5) + X[9] + 1836072691, 14) + h;
h4 = RL(h4, 10);
h = RL(h + F3(h2, h3, h4) + X[11] + 1836072691, 12) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F3(h, h2, h3) + X[8] + 1836072691, 13) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F3(h5, h, h2) + X[12] + 1836072691, 5) + h3;
h = RL(h, 10);
h3 = RL(h3 + F3(h4, h5, h) + X[2] + 1836072691, 14) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F3(h3, h4, h5) + X[10] + 1836072691, 13) + h;
h4 = RL(h4, 10);
h = RL(h + F3(h2, h3, h4) + X[0] + 1836072691, 13) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F3(h, h2, h3) + X[4] + 1836072691, 7) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F3(h5, h, h2) + X[13] + 1836072691, 5) + h3;
h = RL(h, 10);
num3 = RL(num3 + F4(num4, num5, num) + X[1] + -1894007588, 11) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F4(num3, num4, num5) + X[9] + -1894007588, 12) + num;
num4 = RL(num4, 10);
num = RL(num + F4(num2, num3, num4) + X[11] + -1894007588, 14) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F4(num, num2, num3) + X[10] + -1894007588, 15) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F4(num5, num, num2) + X[0] + -1894007588, 14) + num3;
num = RL(num, 10);
num3 = RL(num3 + F4(num4, num5, num) + X[8] + -1894007588, 15) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F4(num3, num4, num5) + X[12] + -1894007588, 9) + num;
num4 = RL(num4, 10);
num = RL(num + F4(num2, num3, num4) + X[4] + -1894007588, 8) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F4(num, num2, num3) + X[13] + -1894007588, 9) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F4(num5, num, num2) + X[3] + -1894007588, 14) + num3;
num = RL(num, 10);
num3 = RL(num3 + F4(num4, num5, num) + X[7] + -1894007588, 5) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F4(num3, num4, num5) + X[15] + -1894007588, 6) + num;
num4 = RL(num4, 10);
num = RL(num + F4(num2, num3, num4) + X[14] + -1894007588, 8) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F4(num, num2, num3) + X[5] + -1894007588, 6) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F4(num5, num, num2) + X[6] + -1894007588, 5) + num3;
num = RL(num, 10);
num3 = RL(num3 + F4(num4, num5, num) + X[2] + -1894007588, 12) + num2;
num5 = RL(num5, 10);
h3 = RL(h3 + F2(h4, h5, h) + X[8] + 2053994217, 15) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F2(h3, h4, h5) + X[6] + 2053994217, 5) + h;
h4 = RL(h4, 10);
h = RL(h + F2(h2, h3, h4) + X[4] + 2053994217, 8) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F2(h, h2, h3) + X[1] + 2053994217, 11) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F2(h5, h, h2) + X[3] + 2053994217, 14) + h3;
h = RL(h, 10);
h3 = RL(h3 + F2(h4, h5, h) + X[11] + 2053994217, 14) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F2(h3, h4, h5) + X[15] + 2053994217, 6) + h;
h4 = RL(h4, 10);
h = RL(h + F2(h2, h3, h4) + X[0] + 2053994217, 14) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F2(h, h2, h3) + X[5] + 2053994217, 6) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F2(h5, h, h2) + X[12] + 2053994217, 9) + h3;
h = RL(h, 10);
h3 = RL(h3 + F2(h4, h5, h) + X[2] + 2053994217, 12) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F2(h3, h4, h5) + X[13] + 2053994217, 9) + h;
h4 = RL(h4, 10);
h = RL(h + F2(h2, h3, h4) + X[9] + 2053994217, 12) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F2(h, h2, h3) + X[7] + 2053994217, 5) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F2(h5, h, h2) + X[10] + 2053994217, 15) + h3;
h = RL(h, 10);
h3 = RL(h3 + F2(h4, h5, h) + X[14] + 2053994217, 8) + h2;
h5 = RL(h5, 10);
num2 = RL(num2 + F5(num3, num4, num5) + X[4] + -1454113458, 9) + num;
num4 = RL(num4, 10);
num = RL(num + F5(num2, num3, num4) + X[0] + -1454113458, 15) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F5(num, num2, num3) + X[5] + -1454113458, 5) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F5(num5, num, num2) + X[9] + -1454113458, 11) + num3;
num = RL(num, 10);
num3 = RL(num3 + F5(num4, num5, num) + X[7] + -1454113458, 6) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F5(num3, num4, num5) + X[12] + -1454113458, 8) + num;
num4 = RL(num4, 10);
num = RL(num + F5(num2, num3, num4) + X[2] + -1454113458, 13) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F5(num, num2, num3) + X[10] + -1454113458, 12) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F5(num5, num, num2) + X[14] + -1454113458, 5) + num3;
num = RL(num, 10);
num3 = RL(num3 + F5(num4, num5, num) + X[1] + -1454113458, 12) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F5(num3, num4, num5) + X[3] + -1454113458, 13) + num;
num4 = RL(num4, 10);
num = RL(num + F5(num2, num3, num4) + X[8] + -1454113458, 14) + num5;
num3 = RL(num3, 10);
num5 = RL(num5 + F5(num, num2, num3) + X[11] + -1454113458, 11) + num4;
num2 = RL(num2, 10);
num4 = RL(num4 + F5(num5, num, num2) + X[6] + -1454113458, 8) + num3;
num = RL(num, 10);
num3 = RL(num3 + F5(num4, num5, num) + X[15] + -1454113458, 5) + num2;
num5 = RL(num5, 10);
num2 = RL(num2 + F5(num3, num4, num5) + X[13] + -1454113458, 6) + num;
num4 = RL(num4, 10);
h2 = RL(h2 + F1(h3, h4, h5) + X[12], 8) + h;
h4 = RL(h4, 10);
h = RL(h + F1(h2, h3, h4) + X[15], 5) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F1(h, h2, h3) + X[10], 12) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F1(h5, h, h2) + X[4], 9) + h3;
h = RL(h, 10);
h3 = RL(h3 + F1(h4, h5, h) + X[1], 12) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F1(h3, h4, h5) + X[5], 5) + h;
h4 = RL(h4, 10);
h = RL(h + F1(h2, h3, h4) + X[8], 14) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F1(h, h2, h3) + X[7], 6) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F1(h5, h, h2) + X[6], 8) + h3;
h = RL(h, 10);
h3 = RL(h3 + F1(h4, h5, h) + X[2], 13) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F1(h3, h4, h5) + X[13], 6) + h;
h4 = RL(h4, 10);
h = RL(h + F1(h2, h3, h4) + X[14], 5) + h5;
h3 = RL(h3, 10);
h5 = RL(h5 + F1(h, h2, h3) + X[0], 15) + h4;
h2 = RL(h2, 10);
h4 = RL(h4 + F1(h5, h, h2) + X[3], 13) + h3;
h = RL(h, 10);
h3 = RL(h3 + F1(h4, h5, h) + X[9], 11) + h2;
h5 = RL(h5, 10);
h2 = RL(h2 + F1(h3, h4, h5) + X[11], 11) + h;
h4 = RL(h4, 10);
h4 += num3 + H1;
H1 = H2 + num4 + h5;
H2 = H3 + num5 + h;
H3 = H4 + num + h2;
H4 = H0 + num2 + h3;
H0 = h4;
_offset = 0;
for (int i = 0; i < X.Length; i++) {
X[i] = 0;
}
}
}
}