private static bytes2uint ( byte src, int offset ) : uint | ||
src | byte | |
offset | int | |
return | uint |
private int processBlock192or256(byte[] input, int inOff, byte[] output, int outOff) { for (int i = 0; i < 4; i++) { this.state[i] = CamelliaEngine.bytes2uint(input, inOff + i * 4); this.state[i] ^= this.kw[i]; } CamelliaEngine.camelliaF2(this.state, this.subkey, 0); CamelliaEngine.camelliaF2(this.state, this.subkey, 4); CamelliaEngine.camelliaF2(this.state, this.subkey, 8); CamelliaEngine.camelliaFLs(this.state, this.ke, 0); CamelliaEngine.camelliaF2(this.state, this.subkey, 12); CamelliaEngine.camelliaF2(this.state, this.subkey, 16); CamelliaEngine.camelliaF2(this.state, this.subkey, 20); CamelliaEngine.camelliaFLs(this.state, this.ke, 4); CamelliaEngine.camelliaF2(this.state, this.subkey, 24); CamelliaEngine.camelliaF2(this.state, this.subkey, 28); CamelliaEngine.camelliaF2(this.state, this.subkey, 32); CamelliaEngine.camelliaFLs(this.state, this.ke, 8); CamelliaEngine.camelliaF2(this.state, this.subkey, 36); CamelliaEngine.camelliaF2(this.state, this.subkey, 40); CamelliaEngine.camelliaF2(this.state, this.subkey, 44); this.state[2] ^= this.kw[4]; this.state[3] ^= this.kw[5]; this.state[0] ^= this.kw[6]; this.state[1] ^= this.kw[7]; CamelliaEngine.uint2bytes(this.state[2], output, outOff); CamelliaEngine.uint2bytes(this.state[3], output, outOff + 4); CamelliaEngine.uint2bytes(this.state[0], output, outOff + 8); CamelliaEngine.uint2bytes(this.state[1], output, outOff + 12); return(16); }
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] = CamelliaEngine.bytes2uint(key, 0); array[1] = CamelliaEngine.bytes2uint(key, 4); array[2] = CamelliaEngine.bytes2uint(key, 8); array[3] = CamelliaEngine.bytes2uint(key, 12); array[4] = CamelliaEngine.bytes2uint(key, 16); array[5] = CamelliaEngine.bytes2uint(key, 20); array[6] = CamelliaEngine.bytes2uint(key, 24); array[7] = CamelliaEngine.bytes2uint(key, 28); this._keyIs128 = false; } else { array[0] = CamelliaEngine.bytes2uint(key, 0); array[1] = CamelliaEngine.bytes2uint(key, 4); array[2] = CamelliaEngine.bytes2uint(key, 8); array[3] = CamelliaEngine.bytes2uint(key, 12); array[4] = CamelliaEngine.bytes2uint(key, 16); array[5] = CamelliaEngine.bytes2uint(key, 20); array[6] = ~array[4]; array[7] = ~array[5]; this._keyIs128 = false; } } else { this._keyIs128 = true; array[0] = CamelliaEngine.bytes2uint(key, 0); array[1] = CamelliaEngine.bytes2uint(key, 4); array[2] = CamelliaEngine.bytes2uint(key, 8); array[3] = CamelliaEngine.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]); } CamelliaEngine.camelliaF2(array2, CamelliaEngine.SIGMA, 0); for (int j = 0; j < 4; j++) { array2[j] ^= array[j]; } CamelliaEngine.camelliaF2(array2, CamelliaEngine.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]; CamelliaEngine.roldq(15, array, 0, this.subkey, 4); CamelliaEngine.roldq(30, array, 0, this.subkey, 12); CamelliaEngine.roldq(15, array, 0, array4, 0); this.subkey[18] = array4[2]; this.subkey[19] = array4[3]; CamelliaEngine.roldq(17, array, 0, this.ke, 4); CamelliaEngine.roldq(17, array, 0, this.subkey, 24); CamelliaEngine.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]; CamelliaEngine.roldq(15, array2, 0, this.subkey, 8); CamelliaEngine.roldq(15, array2, 0, this.ke, 0); CamelliaEngine.roldq(15, array2, 0, array4, 0); this.subkey[16] = array4[0]; this.subkey[17] = array4[1]; CamelliaEngine.roldq(15, array2, 0, this.subkey, 20); CamelliaEngine.roldqo32(34, array2, 0, this.subkey, 28); CamelliaEngine.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]; CamelliaEngine.decroldq(15, array, 0, this.subkey, 28); CamelliaEngine.decroldq(30, array, 0, this.subkey, 20); CamelliaEngine.decroldq(15, array, 0, array4, 0); this.subkey[16] = array4[0]; this.subkey[17] = array4[1]; CamelliaEngine.decroldq(17, array, 0, this.ke, 0); CamelliaEngine.decroldq(17, array, 0, this.subkey, 8); CamelliaEngine.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]; CamelliaEngine.decroldq(15, array2, 0, this.subkey, 24); CamelliaEngine.decroldq(15, array2, 0, this.ke, 4); CamelliaEngine.decroldq(15, array2, 0, array4, 0); this.subkey[18] = array4[2]; this.subkey[19] = array4[3]; CamelliaEngine.decroldq(15, array2, 0, this.subkey, 12); CamelliaEngine.decroldqo32(34, array2, 0, this.subkey, 4); CamelliaEngine.roldq(17, array2, 0, this.kw, 0); return; } else { for (int k = 0; k < 4; k++) { array3[k] = (array2[k] ^ array[k + 4]); } CamelliaEngine.camelliaF2(array3, CamelliaEngine.SIGMA, 8); if (forEncryption) { this.kw[0] = array[0]; this.kw[1] = array[1]; this.kw[2] = array[2]; this.kw[3] = array[3]; CamelliaEngine.roldqo32(45, array, 0, this.subkey, 16); CamelliaEngine.roldq(15, array, 0, this.ke, 4); CamelliaEngine.roldq(17, array, 0, this.subkey, 32); CamelliaEngine.roldqo32(34, array, 0, this.subkey, 44); CamelliaEngine.roldq(15, array, 4, this.subkey, 4); CamelliaEngine.roldq(15, array, 4, this.ke, 0); CamelliaEngine.roldq(30, array, 4, this.subkey, 24); CamelliaEngine.roldqo32(34, array, 4, this.subkey, 36); CamelliaEngine.roldq(15, array2, 0, this.subkey, 8); CamelliaEngine.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]; CamelliaEngine.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]; CamelliaEngine.roldq(30, array3, 0, this.subkey, 12); CamelliaEngine.roldq(30, array3, 0, this.subkey, 28); CamelliaEngine.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]; CamelliaEngine.decroldqo32(45, array, 0, this.subkey, 28); CamelliaEngine.decroldq(15, array, 0, this.ke, 4); CamelliaEngine.decroldq(17, array, 0, this.subkey, 12); CamelliaEngine.decroldqo32(34, array, 0, this.subkey, 0); CamelliaEngine.decroldq(15, array, 4, this.subkey, 40); CamelliaEngine.decroldq(15, array, 4, this.ke, 8); CamelliaEngine.decroldq(30, array, 4, this.subkey, 20); CamelliaEngine.decroldqo32(34, array, 4, this.subkey, 8); CamelliaEngine.decroldq(15, array2, 0, this.subkey, 36); CamelliaEngine.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]; CamelliaEngine.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]; CamelliaEngine.decroldq(30, array3, 0, this.subkey, 32); CamelliaEngine.decroldq(30, array3, 0, this.subkey, 16); CamelliaEngine.roldqo32(51, array3, 0, this.kw, 0); return; } }