uint[] DeriveKey()
{
uint[] dst = new uint[0x10], src = new uint[0x10];
for (int i = 0; i < 0x10; i++)
{
dst[i] = v;
src[i] = x;
z = (x >> 5) | (x << 27);
x = (c >> 3) | (c << 29);
c = (v >> 7) | (v << 25);
v = (z >> 11) | (z << 21);
}
return(deriver.DeriveKey(dst, src));
}
uint[] DeriveKey()
{
uint[] dst = new uint[0x10], src = new uint[0x10];
for (int i = 0; i < 0x10; i++)
{
dst[i] = mut4;
src[i] = mut2;
mut1 = (mut2 >> 5) | (mut2 << 27);
mut2 = (mut3 >> 3) | (mut3 << 29);
mut3 = (mut4 >> 7) | (mut4 << 25);
mut4 = (mut1 >> 11) | (mut1 << 21);
}
return(deriver.DeriveKey(dst, src));
}
uint[] DeriveKey()
{
uint[] dst = new uint[0x10], src = new uint[0x10];
for (int i = 0; i < 0x10; i++)
{
dst[i] = v;
src[i] = x;
z = (x >> 7) | (x << 25);
x = (c >> 2) | (c << 30);
c = (v >> 6) | (v << 24);
v = (z >> 12) | (z << 23);
}
return(deriver.DeriveKey(dst, src));
}
public byte[] Encrypt(ICompressionService compress, byte[] data, uint seed, Action <double> progressFunc)
{
data = (byte[])data.Clone();
var dst = new uint[0x10];
var src = new uint[0x10];
ulong state = seed;
for (var i = 0; i < 0x10; i++)
{
state = (state * state) % 0x143fc089;
src[i] = (uint)state;
dst[i] = (uint)((state * state) % 0x444d56fb);
}
var key = Deriver.DeriveKey(dst, src);
var z = (uint)(state % 0x8a5cb7);
for (var i = 0; i < data.Length; i++)
{
data[i] ^= (byte)state;
if ((i & 0xff) == 0)
{
state = (state * state) % 0x8a5cb7;
}
}
data = compress.Compress(data, progressFunc);
Array.Resize(ref data, (data.Length + 3) & ~3);
var encryptedData = new byte[data.Length];
var keyIndex = 0;
for (var i = 0; i < data.Length; i += 4)
{
var datum = (uint)(data[i + 0] | (data[i + 1] << 8) | (data[i + 2] << 16) | (data[i + 3] << 24));
var encrypted = datum ^ key[keyIndex & 0xf];
key[keyIndex & 0xf] = (key[keyIndex & 0xf] ^ datum) + 0x3ddb2819;
encryptedData[i + 0] = (byte)(encrypted >> 0);
encryptedData[i + 1] = (byte)(encrypted >> 8);
encryptedData[i + 2] = (byte)(encrypted >> 16);
encryptedData[i + 3] = (byte)(encrypted >> 24);
keyIndex++;
}
return(encryptedData);
}