| private static roldqo32 ( int rot, uint ki, int ioff, uint ko, int ooff ) : void | ||
| rot | int | |
| ki | uint | |
| ioff | int | |
| ko | uint | |
| ooff | int | |
| return | void | |
private void setKey(bool forEncryption, byte[] key)
{
uint[] array = new uint[8];
uint[] array2 = new uint[4];
uint[] array3 = new uint[4];
uint[] array4 = new uint[4];
int num = key.Length;
if (num != 16)
{
if (num != 24)
{
if (num != 32)
{
throw new ArgumentException("key sizes are only 16/24/32 bytes.");
}
array[0] = CamelliaLightEngine.bytes2uint(key, 0);
array[1] = CamelliaLightEngine.bytes2uint(key, 4);
array[2] = CamelliaLightEngine.bytes2uint(key, 8);
array[3] = CamelliaLightEngine.bytes2uint(key, 12);
array[4] = CamelliaLightEngine.bytes2uint(key, 16);
array[5] = CamelliaLightEngine.bytes2uint(key, 20);
array[6] = CamelliaLightEngine.bytes2uint(key, 24);
array[7] = CamelliaLightEngine.bytes2uint(key, 28);
this._keyis128 = false;
}
else
{
array[0] = CamelliaLightEngine.bytes2uint(key, 0);
array[1] = CamelliaLightEngine.bytes2uint(key, 4);
array[2] = CamelliaLightEngine.bytes2uint(key, 8);
array[3] = CamelliaLightEngine.bytes2uint(key, 12);
array[4] = CamelliaLightEngine.bytes2uint(key, 16);
array[5] = CamelliaLightEngine.bytes2uint(key, 20);
array[6] = ~array[4];
array[7] = ~array[5];
this._keyis128 = false;
}
}
else
{
this._keyis128 = true;
array[0] = CamelliaLightEngine.bytes2uint(key, 0);
array[1] = CamelliaLightEngine.bytes2uint(key, 4);
array[2] = CamelliaLightEngine.bytes2uint(key, 8);
array[3] = CamelliaLightEngine.bytes2uint(key, 12);
array[4] = (array[5] = (array[6] = (array[7] = 0u)));
}
for (int i = 0; i < 4; i++)
{
array2[i] = (array[i] ^ array[i + 4]);
}
this.camelliaF2(array2, CamelliaLightEngine.SIGMA, 0);
for (int j = 0; j < 4; j++)
{
array2[j] ^= array[j];
}
this.camelliaF2(array2, CamelliaLightEngine.SIGMA, 4);
if (this._keyis128)
{
if (forEncryption)
{
this.kw[0] = array[0];
this.kw[1] = array[1];
this.kw[2] = array[2];
this.kw[3] = array[3];
CamelliaLightEngine.roldq(15, array, 0, this.subkey, 4);
CamelliaLightEngine.roldq(30, array, 0, this.subkey, 12);
CamelliaLightEngine.roldq(15, array, 0, array4, 0);
this.subkey[18] = array4[2];
this.subkey[19] = array4[3];
CamelliaLightEngine.roldq(17, array, 0, this.ke, 4);
CamelliaLightEngine.roldq(17, array, 0, this.subkey, 24);
CamelliaLightEngine.roldq(17, array, 0, this.subkey, 32);
this.subkey[0] = array2[0];
this.subkey[1] = array2[1];
this.subkey[2] = array2[2];
this.subkey[3] = array2[3];
CamelliaLightEngine.roldq(15, array2, 0, this.subkey, 8);
CamelliaLightEngine.roldq(15, array2, 0, this.ke, 0);
CamelliaLightEngine.roldq(15, array2, 0, array4, 0);
this.subkey[16] = array4[0];
this.subkey[17] = array4[1];
CamelliaLightEngine.roldq(15, array2, 0, this.subkey, 20);
CamelliaLightEngine.roldqo32(34, array2, 0, this.subkey, 28);
CamelliaLightEngine.roldq(17, array2, 0, this.kw, 4);
return;
}
this.kw[4] = array[0];
this.kw[5] = array[1];
this.kw[6] = array[2];
this.kw[7] = array[3];
CamelliaLightEngine.decroldq(15, array, 0, this.subkey, 28);
CamelliaLightEngine.decroldq(30, array, 0, this.subkey, 20);
CamelliaLightEngine.decroldq(15, array, 0, array4, 0);
this.subkey[16] = array4[0];
this.subkey[17] = array4[1];
CamelliaLightEngine.decroldq(17, array, 0, this.ke, 0);
CamelliaLightEngine.decroldq(17, array, 0, this.subkey, 8);
CamelliaLightEngine.decroldq(17, array, 0, this.subkey, 0);
this.subkey[34] = array2[0];
this.subkey[35] = array2[1];
this.subkey[32] = array2[2];
this.subkey[33] = array2[3];
CamelliaLightEngine.decroldq(15, array2, 0, this.subkey, 24);
CamelliaLightEngine.decroldq(15, array2, 0, this.ke, 4);
CamelliaLightEngine.decroldq(15, array2, 0, array4, 0);
this.subkey[18] = array4[2];
this.subkey[19] = array4[3];
CamelliaLightEngine.decroldq(15, array2, 0, this.subkey, 12);
CamelliaLightEngine.decroldqo32(34, array2, 0, this.subkey, 4);
CamelliaLightEngine.roldq(17, array2, 0, this.kw, 0);
return;
}
else
{
for (int k = 0; k < 4; k++)
{
array3[k] = (array2[k] ^ array[k + 4]);
}
this.camelliaF2(array3, CamelliaLightEngine.SIGMA, 8);
if (forEncryption)
{
this.kw[0] = array[0];
this.kw[1] = array[1];
this.kw[2] = array[2];
this.kw[3] = array[3];
CamelliaLightEngine.roldqo32(45, array, 0, this.subkey, 16);
CamelliaLightEngine.roldq(15, array, 0, this.ke, 4);
CamelliaLightEngine.roldq(17, array, 0, this.subkey, 32);
CamelliaLightEngine.roldqo32(34, array, 0, this.subkey, 44);
CamelliaLightEngine.roldq(15, array, 4, this.subkey, 4);
CamelliaLightEngine.roldq(15, array, 4, this.ke, 0);
CamelliaLightEngine.roldq(30, array, 4, this.subkey, 24);
CamelliaLightEngine.roldqo32(34, array, 4, this.subkey, 36);
CamelliaLightEngine.roldq(15, array2, 0, this.subkey, 8);
CamelliaLightEngine.roldq(30, array2, 0, this.subkey, 20);
this.ke[8] = array2[1];
this.ke[9] = array2[2];
this.ke[10] = array2[3];
this.ke[11] = array2[0];
CamelliaLightEngine.roldqo32(49, array2, 0, this.subkey, 40);
this.subkey[0] = array3[0];
this.subkey[1] = array3[1];
this.subkey[2] = array3[2];
this.subkey[3] = array3[3];
CamelliaLightEngine.roldq(30, array3, 0, this.subkey, 12);
CamelliaLightEngine.roldq(30, array3, 0, this.subkey, 28);
CamelliaLightEngine.roldqo32(51, array3, 0, this.kw, 4);
return;
}
this.kw[4] = array[0];
this.kw[5] = array[1];
this.kw[6] = array[2];
this.kw[7] = array[3];
CamelliaLightEngine.decroldqo32(45, array, 0, this.subkey, 28);
CamelliaLightEngine.decroldq(15, array, 0, this.ke, 4);
CamelliaLightEngine.decroldq(17, array, 0, this.subkey, 12);
CamelliaLightEngine.decroldqo32(34, array, 0, this.subkey, 0);
CamelliaLightEngine.decroldq(15, array, 4, this.subkey, 40);
CamelliaLightEngine.decroldq(15, array, 4, this.ke, 8);
CamelliaLightEngine.decroldq(30, array, 4, this.subkey, 20);
CamelliaLightEngine.decroldqo32(34, array, 4, this.subkey, 8);
CamelliaLightEngine.decroldq(15, array2, 0, this.subkey, 36);
CamelliaLightEngine.decroldq(30, array2, 0, this.subkey, 24);
this.ke[2] = array2[1];
this.ke[3] = array2[2];
this.ke[0] = array2[3];
this.ke[1] = array2[0];
CamelliaLightEngine.decroldqo32(49, array2, 0, this.subkey, 4);
this.subkey[46] = array3[0];
this.subkey[47] = array3[1];
this.subkey[44] = array3[2];
this.subkey[45] = array3[3];
CamelliaLightEngine.decroldq(30, array3, 0, this.subkey, 32);
CamelliaLightEngine.decroldq(30, array3, 0, this.subkey, 16);
CamelliaLightEngine.roldqo32(51, array3, 0, this.kw, 0);
return;
}
}
