AesManagedHelper

C# Encryption / Decryption wrapper using AesManaged.

Encrypts a utf8 string to give a base64 encoded string of format [IV]-[DATA] where [IV] is randomly generated.

Decrypts a base64 encoded string of format [IV]-[DATA] to give a utf8 string.

You could use random.org to generate passphrase.

Example

var passphrase = "some secret stuff that you get from saturn :)";
var aes = new AesManagedHelper(passphrase);

// Encrypt
var encrypted = aes.EncryptString("encrypt this");
// encrypted: "KXR05UCx8BYQNBmw0FNeH/bDwdXaotbg/YvP50qoWIk="

// Decrypt 
var decrypted = aes.DecryptString(encrypted);
// decrypted: "encrypt this"

Note

Url-encode the encrypted text before using in urls.

var encrypted = WebUtility.UrlEncode(aes.EncryptString("encrypt this"));