public byte[] ConvertOutput( BigInteger result) { byte[] output = result.ToByteArrayUnsigned(); if (forEncryption) { int outSize = GetOutputBlockSize(); // TODO To avoid this, create version of BigInteger.ToByteArray that // writes to an existing array if (output.Length < outSize) // have ended up with less bytes than normal, lengthen { byte[] tmp = new byte[outSize]; output.CopyTo(tmp, tmp.Length - output.Length); output = tmp; } } return output; }