C# “Bad Data” exception when decrypting encrypted file

Question

Hey I\'m very new to encryption and decryption, or even the c# language to be honest. Basically, I have a tcp chat server that \"saves\" logs and encrypts the text file. Thi

Answer 1

What fixed my issue was calling FlushFinalBlock on cryptostream, When creating the file

                CryptoStream cryptostream = new CryptoStream(memoryStream, this._encryptionKeyHelper.Encryptor(), CryptoStreamMode.Write);

            xmlser.Serialize(cryptostream, builderObject);

            cryptostream.FlushFinalBlock();