Simple encryption and decryption functions that make the process easy to use.

EncryptDecrypt.cs

/// <summary>
/// Decrypts a string that was encrypted using the encrypt method in this library.
/// </summary>
/// <param name="input">Encrypted string in base 64</param>
/// <param name="key">Salt key used in encryption</param>
/// <returns>Decrypted string data</returns>
public static string Decrypt(string input, string key)
{
    byte[] inputArray = Convert.FromBase64String(input);

    TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider() {
        Key = System.Text.UTF8Encoding.UTF8.GetBytes(key.PadRight(24, '-')),
        Mode = CipherMode.ECB,
        Padding = PaddingMode.PKCS7
    };

    ICryptoTransform cTransform = tripleDES.CreateDecryptor();
    byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
    tripleDES.Clear();

    return System.Text.UTF8Encoding.UTF8.GetString(resultArray);
}


/// <summary>
/// Encrypts a string for password storage
/// </summary>
/// <param name="input">String to encrypt</param>
/// <param name="key">Salt key</param>
/// <returns>String of encrypted data in base 64</returns>
public static string Encrypt(string input, string key)
{
    byte[] inputArray = System.Text.UTF8Encoding.UTF8.GetBytes(input);

    TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider() {
        Key = System.Text.UTF8Encoding.UTF8.GetBytes(key.PadRight(24, '-')),
        Mode = CipherMode.ECB,
        Padding = PaddingMode.PKCS7
    };

    ICryptoTransform cTransform = tripleDES.CreateEncryptor();
    byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
    tripleDES.Clear();

    return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}