using System;

using System.IO;

using System.Security.Cryptography;

using System.Text;

public class CryptoAESService 

{

    private readonly string _key;

    private readonly string _iv;

    public CryptoAESService(string key, string iv)

    {

        _key = key;

        _iv = iv;

    }

​

    public string Encrypt(string plaintext)

    {

        byte[] encrypted;

​

        // Create an Aes object

        // with the specified key and IV.

        using (Aes aesAlg = Aes.Create())

        {

            aesAlg.Key = Encoding.UTF8.GetBytes(_key);

            aesAlg.IV = Encoding.UTF8.GetBytes(_iv);

​

            // Create an encryptor to perform the stream transform.

            ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

​

            // Create the streams used for encryption.

            using (MemoryStream msEncrypt = new MemoryStream())

            {

                using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))

                {

                    using (StreamWriter swEncrypt = new StreamWriter(csEncrypt, Encoding.UTF8))

                    {

                        //Write all data to the stream.

                        swEncrypt.Write(plaintext);

                    }

                    encrypted = msEncrypt.ToArray();

                }

            }

        }

        return Convert.ToBase64String(encrypted);

    }

​

    public string Decrypt(string base64CipherText)

    {

        byte[] cipherText = Convert.FromBase64String(base64CipherText);

        string plainText = null;

​

        // Create an Aes object

        // with the specified key and IV.

        using (Aes aesAlg = Aes.Create())

        {

            aesAlg.Key = Encoding.UTF8.GetBytes(_key);

            aesAlg.IV = Encoding.UTF8.GetBytes(_iv);

​

            // Create a decryptor to perform the stream transform.

            ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

​

            // Create the streams used for decryption.

            using (MemoryStream msDecrypt = new MemoryStream(cipherText))

            {

                using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))

                {

                    using (StreamReader srDecrypt = new StreamReader(csDecrypt, Encoding.UTF8))

                    {

​

                        // Read the decrypted bytes from the decrypting stream

                        // and place them in a string.

                        plainText = srDecrypt.ReadToEnd();

                    }

                }

            }

        }

        return plainText;

    }

​

}

​

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var crypto = new CryptoAESService("B0235DE99D3E4B52A732F85F43DD5ADB","d)j&1KfM0;sjKmJs");

        var encrypted = crypto.Encrypt("cabbplus::::::");

        Console.WriteLine("data:"+encrypted);

    }

}