/// <summary>
/// Decrypt the ciphertext message
/// </summary>
/// <param name="ciphertext"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string Decrypt(string ciphertext, string key)
{
return(Vigenere.ProcessKey(ciphertext, key, -1));
}
/// <summary>
/// Encrypt the cleartext message
/// </summary>
/// <param name="cleartext"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string Encrypt(string cleartext, string key)
{
return(Vigenere.ProcessKey(cleartext, key, 1));
}