c# encrypt decrypt string
public static string Base64Decode(string base64EncodedData)
{
var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData);
return System.Text.Encoding.UTF8.GetString(base64EncodedBytes);
}
public static string Base64Encode(string plainText)
{
var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
return System.Convert.ToBase64String(plainTextBytes);
}how to decrypt in c#
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace encrypt_decrypt_string
{
class Program
{
static string Decrypt()
{
try
{
string textToDecrypt = "v1JvjRGYn+g+4H/KjszL/g==";
string ToReturn = "";
string publickey = "12345678";
string secretkey = "87654321";
byte[] privatekeyByte = { };
privatekeyByte = System.Text.Encoding.UTF8.GetBytes(secretkey);
byte[] publickeybyte = { };
publickeybyte = System.Text.Encoding.UTF8.GetBytes(publickey);
MemoryStream ms = null;
CryptoStream cs = null;
byte[] inputbyteArray = new byte[textToDecrypt.Replace(" ", "+").Length];
inputbyteArray = Convert.FromBase64String(textToDecrypt.Replace(" ", "+"));
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
{
ms = new MemoryStream();
cs = new CryptoStream(ms, des.CreateDecryptor(publickeybyte, privatekeyByte), CryptoStreamMode.Write);
cs.Write(inputbyteArray, 0, inputbyteArray.Length);
cs.FlushFinalBlock();
Encoding encoding = Encoding.UTF8;
ToReturn = encoding.GetString(ms.ToArray());
}
return ToReturn;
}
catch (Exception ae)
{
throw new Exception(ae.Message, ae.InnerException);
}
}
static void Main(string[] args)
{
string decrypted = Decrypt();
Console.WriteLine(decrypted);
}
}
}Copyright © 2021 Codeinu
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