public IEnumerable <byte> Encrypt(IEnumerable <byte> source, byte[] key, byte[] initializingVector)
{
var crypter = CreateCrypterWithChecks(key, initializingVector);
var blockWorker = new BlockWorker(crypter.BlockSize);
foreach (var block in blockWorker.GetBlocks(source, new TPaddingStandart()))
{
var blockArray = block.ToArray();
var encryptInput = blockArray.Xor(initializingVector);
var encryptOutput = crypter.Encrypt(encryptInput);
foreach (var b in encryptOutput)
{
yield return(b);
}
initializingVector = blockArray.Xor(encryptOutput);
}
}
public static byte[] GetHash(IEnumerable <byte> content)
{
var hVector = InitializeVector();
var blockWorker = new BlockWorker(128);
foreach (var block in blockWorker.GetBlocks(content, new SHA512PaddingStandard()))
{
var blockArray = block.ToArray();
var subBlocks = new ulong[80];
for (var i = 0; i < 16; i++)
{
subBlocks[i] = ExtendedBitConverter.ToUInt64(blockArray, i * 8);
}
for (var i = 16; i < 80; i++)
{
var e0 = subBlocks[i - 15];
var e1 = subBlocks[i - 2];
var s0 = e0.Rotr(1).Xor(e0.Rotr(8)).Xor(e0 >> 7);
var s1 = e1.Rotr(19).Xor(e1.Rotr(61)).Xor(e1 >> 6);
subBlocks[i] = unchecked (subBlocks[i - 16] + s0 + subBlocks[i - 7] + s1);
}
var a = hVector[0];
var b = hVector[1];
var c = hVector[2];
var d = hVector[3];
var e = hVector[4];
var f = hVector[5];
var g = hVector[6];
var h = hVector[7];
for (var i = 0; i < 80; i++)
{
var sum0 = a.Rotr(28).Xor(a.Rotr(34)).Xor(a.Rotr(39));
var ma = (a & b).Xor(a & c).Xor(b & c);
var t2 = unchecked (sum0 + ma);
var sum1 = e.Rotr(14).Xor(e.Rotr(18)).Xor(e.Rotr(41));
var ch = (e & f).Xor(~e & g);
var t1 = unchecked (h + sum1 + ch + K[i] + subBlocks[i]);
h = g;
g = f;
f = e;
e = unchecked (d + t1);
d = c;
c = b;
b = a;
a = unchecked (t1 + t2);
}
hVector[0] = unchecked (hVector[0] + a);
hVector[1] = unchecked (hVector[1] + b);
hVector[2] = unchecked (hVector[2] + c);
hVector[3] = unchecked (hVector[3] + d);
hVector[4] = unchecked (hVector[4] + e);
hVector[5] = unchecked (hVector[5] + f);
hVector[6] = unchecked (hVector[6] + g);
hVector[7] = unchecked (hVector[7] + h);
}
return(hVector
.SelectMany(x => BitConverter.GetBytes(x).Reverse())
.ToArray());
}