如何在asp.net中轻松进行加密和解密? [英] how to easy way of Encrypt and decrypt in asp.net?

问题描述

如何在asp.net中轻松进行加密和解密?

提前祝福！

how to easy way of Encrypt and decrypt in asp.net?

Advance Wishes!!

推荐答案

HI，
这么简单.

请参考下面的代码.

在要加密或解密的字符串中传递值.

Its so easy.

Please refer below code for this.

Pass value in string which you want to encrypt or decrypt.

using System.Text;
using System.Security.Cryptography;
using System.IO;

public static string EncryptQueryString(string str)
    {
        byte[] bytes = ASCIIEncoding.ASCII.GetBytes("proposal");
        DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
        MemoryStream memoryStream = new MemoryStream();
        CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoProvider.CreateEncryptor(bytes, bytes), CryptoStreamMode.Write);
        StreamWriter writer = new StreamWriter(cryptoStream);
        writer.Write(str);
        writer.Flush();
        cryptoStream.FlushFinalBlock();
        writer.Flush();
        return HttpUtility.UrlEncode(Convert.ToBase64String(memoryStream.GetBuffer(), 0, (int)memoryStream.Length));
    }


 public static string DecryptQueryString(string cryptedstr)
    {
        cryptedstr = cryptedstr.Replace(" ", "+");
        byte[] bytes = ASCIIEncoding.ASCII.GetBytes("proposal");
        if (String.IsNullOrEmpty(cryptedstr))
        {
            throw new ArgumentNullException("String can not be null.");
        }
        DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
        MemoryStream memoryStream = new MemoryStream(Convert.FromBase64String(cryptedstr));
        CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoProvider.CreateDecryptor(bytes, bytes), CryptoStreamMode.Read);
        StreamReader reader = new StreamReader(cryptoStream);
        return HttpUtility.UrlDecode(reader.ReadToEnd());
    }

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