private void getCryptoKeys(int cryptoFlag, byte[] calculatedKey, byte[] calculatedIV, byte[] key, byte[] iv)
{
switch (((uint)(cryptoFlag & -268435456)))
{
case 0:
ConversionUtils.arraycopy(key, 0, calculatedKey, 0L, calculatedKey.Length);
ConversionUtils.arraycopy(iv, 0, calculatedIV, 0L, calculatedIV.Length);
Debug.WriteLine("MODE: Unencrypted ERK");
break;
case 0x10000000:
ToolsImpl.aescbcDecrypt(EDATKeys.EDATKEY, EDATKeys.EDATIV, key, 0, calculatedKey, 0, calculatedKey.Length);
ConversionUtils.arraycopy(iv, 0, calculatedIV, 0L, calculatedIV.Length);
Debug.WriteLine("MODE: Encrypted ERK");
break;
case 0x20000000:
ConversionUtils.arraycopy(EDATKeys.EDATKEY, 0, calculatedKey, 0L, calculatedKey.Length);
ConversionUtils.arraycopy(EDATKeys.EDATIV, 0, calculatedIV, 0L, calculatedIV.Length);
Debug.WriteLine("MODE: Default ERK");
break;
default:
throw new Exception("Crypto mode is not valid: Undefined keys calculator");
}
}
private void getHashKeys(int hashFlag, byte[] calculatedHash, byte[] hash)
{
uint mode = (uint)hashFlag & 0xF0000000;
switch (mode)
{
case 0x10000000:
ToolsImpl.aescbcDecrypt(EDATKeys.EDATKEY, EDATKeys.EDATIV, hash, 0, calculatedHash, 0, calculatedHash.Length);
Debug.WriteLine("MODE: Encrypted HASHKEY");
break;
case 0x20000000:
ConversionUtils.arraycopy(EDATKeys.EDATHASH, 0, calculatedHash, 0, calculatedHash.Length);
Debug.WriteLine("MODE: Default HASHKEY");
break;
case 0x00000000:
ConversionUtils.arraycopy(hash, 0, calculatedHash, 0, calculatedHash.Length);
Debug.WriteLine("MODE: Unencrypted HASHKEY");
break;
default:
throw new Exception("Hash mode is not valid: Undefined keys calculator");
}
}