LitDev.StringEncryption.EncryptString C# (CSharp) Method

        public static string EncryptString(string plaintext, string passphrase)
        {
            try
            {
                var salt = GenerateRandomBytes(SaltLength); // Random salt
                var iv = GenerateRandomBytes(16); // AES is always a 128-bit block size
                var key = DeriveKeyFromPassphrase(passphrase, salt); // Derive the key from the passphrase

                // Encrypt
                var ciphertext = DoCryptoOperation(Encoding.UTF8.GetBytes(plaintext), key, iv, true);

                // Return the formatted string
                return String.Format("{0}:{1}:{2}", Convert.ToBase64String(iv), Convert.ToBase64String(salt), Convert.ToBase64String(ciphertext));
            }
            catch (Exception ex)
            {
                Utilities.OnError(Utilities.GetCurrentMethod(), ex);
            }
            return "";
        }

 /// <summary>
 /// Encrypt some text using AES encryption and a password key.
 /// The encrypted text can be saved to a file.
 /// Note that if you forget the password there is NO WAY to decrypt!
 /// </summary>
 /// <param name="source">The text to encrypt.</param>
 /// <param name="password">The password key for the encryption.</param>
 /// <returns>The encrypted text (cypher).</returns>
 public static Primitive AESEncrypt(Primitive source, Primitive password)
 {
     return(StringEncryption.EncryptString(source, password));
 }