AES.cs

using System;
using System.IO;
using System.Security.Cryptography;
namespace Crypto
{
    public class AesEncryption
    {
        public  byte[] GenerateRandomNumber(int length)
        {
            using (var randomNumberGenerator = new RNGCryptoServiceProvider())
            {
                var random = new Byte[length];
                randomNumberGenerator.GetBytes(random);
                return random;
            }
        }

        public byte[] Encrypt(byte[] dataToEncrypt, byte[] key, byte[] iv)
        {
            using (var des = new AesCryptoServiceProvider())
            {
                des.Mode = CipherMode.CBC;
                des.Padding = PaddingMode.PKCS7;
                des.Key = key;
                des.IV = iv;
                using (var memoryStream = new MemoryStream())
                {
                    var cryptoStream = new CryptoStream(memoryStream, des.CreateEncryptor(), CryptoStreamMode.Write);
                    cryptoStream.Write(dataToEncrypt, 0, dataToEncrypt.Length);
                    cryptoStream.FlushFinalBlock();
                    return memoryStream.ToArray();

                }
            }
        }

        public byte[] Decrypt(byte[] dataToDecrypt, byte[] key, byte[] iv)
        {
            using (var des = new AesCryptoServiceProvider())
            {
                des.Mode = CipherMode.CBC;
                des.Padding = PaddingMode.PKCS7;
                des.Key = key;
                des.IV = iv;
                using (var memoryStream = new MemoryStream())
                {
                    var cryptoStream = new CryptoStream(memoryStream, des.CreateDecryptor(), CryptoStreamMode.Write);
                    cryptoStream.Write(dataToDecrypt, 0, dataToDecrypt.Length);
                    cryptoStream.FlushFinalBlock();
                    return memoryStream.ToArray();
                }
            }
        }
    }
}