Need help with this source code
Hello I got a problem with the padding after decrytion.
(I dont want to use convert.tobase64string metheod)
So, Ive found this source code, for encrypting and decrypting.
For example:
txtboxNormalString.text = "Hello"
and pressed on encrytion button, txtboxEncrytedString.text = "??:??7s???2?),?" (Hello encrypted)
Then pressed on Decryted button, And txtboxDecrytedString.text = "hello7s???2?),?"
Can somebody explain me how to remove the padding after decryption.
Encryption / decryption is new for me so i dont really know much about it for now.
(I dont want to use convert.tobase64string metheod)
So, Ive found this source code, for encrypting and decrypting.
For example:
txtboxNormalString.text = "Hello"
and pressed on encrytion button, txtboxEncrytedString.text = "??:??7s???2?),?" (Hello encrypted)
Then pressed on Decryted button, And txtboxDecrytedString.text = "hello7s???2?),?"
Can somebody explain me how to remove the padding after decryption.
Encryption / decryption is new for me so i dont really know much about it for now.
Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Security.Cryptography;
namespace EncryptionDecryption
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
DesObj = Rijndael.Create();
}
string NormalString;
byte[] CipherBytes;
byte[] PlainBytes;
byte[] PlainBytes2;
byte[] PlainKey;
SymmetricAlgorithm DesObj;
private void btnEncrypt_Click(object sender, EventArgs e)
{
NormalString = txtboxNormalString.Text;
PlainBytes = Encoding.ASCII.GetBytes(NormalString);
PlainKey = Encoding.ASCII.GetBytes("12845726gh3846gs");
DesObj.Key = PlainKey;
DesObj.Mode = CipherMode.CBC;
DesObj.Padding = PaddingMode.PKCS7;
System****.MemoryStream ms = new System****.MemoryStream();
CryptoStream cs = new CryptoStream(ms,DesObj.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(PlainBytes, 0, PlainBytes.Length);
cs.Close();
CipherBytes = ms.ToArray();
ms.Close();
txtboxEncryptedString.Text = Encoding.ASCII.GetString(CipherBytes);
}
private void btnDecrypt_Click(object sender, EventArgs e)
{
System****.MemoryStream ms1 = new System****.MemoryStream(CipherBytes);
CryptoStream cs1 = new CryptoStream(ms1, DesObj.CreateDecryptor(), CryptoStreamMode.Read);
cs1.Read(CipherBytes, 0, CipherBytes.Length);
PlainBytes2 = ms1.ToArray();
cs1.Close();
ms1.Close();
txtboxDecryptedString.Text = Encoding.ASCII.GetString(PlainBytes2);
}
