AES加密和解密 C#

經常會用到  aes  加密和解密  ，我寫了一個類 ， 可以看看 。

本人菜鳥，有啥問題見諒。

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AesTestB
{
    public class AesHelp
    {
        /// <summary>
        /// 密鑰(長度必須是32,如2234667890123456)
        /// </summary>
        private string PublicKey;

        /// <summary>
        /// 向量（長度也要32位，如abcdefghhkklmnop）
        /// </summary>
        private string IV;

        public AesHelp(string publickey, string iv)
        {
            PublicKey = publickey;
            IV = iv;
        }

        /// <summary>
        /// AES加密
        /// </summary>
        /// <param name="str">需要加密的字符串</param>
        /// <param name="key">32位密鑰</param>
        /// <returns>加密後的字符串</returns>
        public string Encrypt(string str)
        {
            Byte[] keyArray = System.Text.Encoding.UTF8.GetBytes(PublicKey);
            Byte[] toEncryptArray = System.Text.Encoding.UTF8.GetBytes(str);
            var rijndael = new System.Security.Cryptography.RijndaelManaged();
            rijndael.Key = keyArray;
            rijndael.Mode = System.Security.Cryptography.CipherMode.ECB;
            rijndael.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
            rijndael.IV = System.Text.Encoding.UTF8.GetBytes(IV);
            System.Security.Cryptography.ICryptoTransform cTransform = rijndael.CreateEncryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        /// <summary>
        /// AES解密
        /// </summary>
        /// <param name="str">需要解密的字符串</param>
        /// <param name="key">32位密鑰</param>
        /// <returns>解密後的字符串</returns>
        public string Decrypt(string str)
        {
            Byte[] keyArray = System.Text.Encoding.UTF8.GetBytes(PublicKey);
            Byte[] toEncryptArray = Convert.FromBase64String(str);
            var rijndael = new System.Security.Cryptography.RijndaelManaged();
            rijndael.Key = keyArray;
            rijndael.Mode = System.Security.Cryptography.CipherMode.ECB;
            rijndael.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
            rijndael.IV = System.Text.Encoding.UTF8.GetBytes(IV);
            System.Security.Cryptography.ICryptoTransform cTransform = rijndael.CreateDecryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return System.Text.Encoding.UTF8.GetString(resultArray);
        }


    }


}