Sunday, 27 October 2013

How to encrypt and decrypt password encrypt or decrypt user password with C#.NET

Hi friends, in this article I will explain about How to encrypt and decrypt password encrypt or decrypt user password with C#.
I already explained in the previous articles about How to Bind Nested Gridview from Database in with C#/VB.NET,Marquee tag or How to Scroll Text From left to right or How to Move the Text in HTML,C#/VB.NET:Save the generated pdf directly to the server directory folder without user prompt in ASP.NET and How to open PDF File in Adobe Reader, not in Browser in ASP.NET using C#/VB.NET

In C#.NET:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Cryptography;
using System.Text;

public partial class Registration : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
        string s = "12345678";
        string ret = Encryptdata(s);
        string val = Decryptdata(ret);
    //public static string EncodePasswordToBase64(string password)
    //    byte[] bytes = System.Text.Encoding.Unicode.GetBytes(password);
    //    byte[] inArray = HashAlgorithm.Create("SHA1").ComputeHash(bytes);
    //    return Convert.ToBase64String(inArray);
    private string Encryptdata(string password)
        string strmsg = string.Empty;
        byte[] encode = new byte[password.Length];
        encode = Encoding.UTF8.GetBytes(password);
        strmsg = Convert.ToBase64String(encode);
        return strmsg;

    private string Decryptdata(string encryptpwd)
        string decryptpwd = string.Empty;
        UTF8Encoding encodepwd = new UTF8Encoding();
        Decoder Decode = encodepwd.GetDecoder();
        byte[] todecode_byte = Convert.FromBase64String(encryptpwd);
        int charCount = Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length);
        char[] decoded_char = new char[charCount];
        Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0);
        decryptpwd = new String(decoded_char);
        return decryptpwd;

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