Skip to content

Instantly share code, notes, and snippets.

@priore
Last active February 28, 2016 02:52
Show Gist options
  • Save priore/5741e7996d5309c51435 to your computer and use it in GitHub Desktop.
Save priore/5741e7996d5309c51435 to your computer and use it in GitHub Desktop.
3DES Encrypt/Decrypt
//
// https://github.com/priore/SOAPEngine/blob/master/CSHARP/3DESClass.cs
//
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Security.Cryptography;
using System.IO;
using System.Text;
namespace Priore.Cryptography
{
public class TripleDESClass
{
public static string EncryptText(string input, string password)
{
// Get the bytes of the string
byte[] bytesToBeEncrypted = UTF8Encoding.UTF8.GetBytes(input);
byte[] passwordBytes = UTF8Encoding.UTF8.GetBytes(password);
// Hash the password with SHA256
passwordBytes = SHA256.Create().ComputeHash(passwordBytes).Take(24).ToArray();
byte[] bytesEncrypted = TripleDES_Encrypt(bytesToBeEncrypted, passwordBytes);
return Convert.ToBase64String(bytesEncrypted);
}
public static byte[] TripleDES_Encrypt(byte[] bytesToBeEncrypted, byte[] passwordBytes)
{
byte[] encryptedBytes = null;
using (TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider())
{
tdes.KeySize = 192;
tdes.BlockSize = 64;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;
tdes.Key = passwordBytes;
using (ICryptoTransform encrypto = tdes.CreateEncryptor())
{
encryptedBytes = encrypto.TransformFinalBlock(bytesToBeEncrypted, 0, bytesToBeEncrypted.Length);
}
}
return encryptedBytes;
}
public static string DecryptText(string input, string password)
{
// Get the bytes of the string
byte[] bytesToBeDecrypted = Convert.FromBase64String(input);
byte[] passwordBytes = UTF8Encoding.UTF8.GetBytes(password);
passwordBytes = SHA256.Create().ComputeHash(passwordBytes).Take(24).ToArray();
byte[] bytesDecrypted = TripleDES_Decrypt(bytesToBeDecrypted, passwordBytes);
return UTF8Encoding.UTF8.GetString(bytesDecrypted);
}
public static byte[] TripleDES_Decrypt(byte[] bytesToBeDecrypted, byte[] passwordBytes)
{
byte[] decryptedBytes = null;
using (TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider())
{
tdes.KeySize = 192;
tdes.BlockSize = 64;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;
tdes.Key = passwordBytes;
using (ICryptoTransform decrypto = tdes.CreateDecryptor())
{
decryptedBytes = decrypto.TransformFinalBlock(bytesToBeDecrypted, 0, bytesToBeDecrypted.Length);
}
}
return decryptedBytes;
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment