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| using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.IO;
namespace Password_Keeper
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public static string Encrypt(string plainText, string password,
string salt = "Kosher", string hashAlgorithm = "SHA1",
int passwordIterations = 2, string initialVector = "OFRna73m*aze01xY",
int keySize = 256)
{
if (string.IsNullOrEmpty(plainText))
return "";
byte[] initialVectorBytes = Encoding.ASCII.GetBytes(initialVector);
byte[] saltValueBytes = Encoding.ASCII.GetBytes(salt);
byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
PasswordDeriveBytes derivedPassword = new PasswordDeriveBytes
(password, saltValueBytes, hashAlgorithm, passwordIterations);
byte[] keyBytes = derivedPassword.GetBytes(keySize / 8);
RijndaelManaged symmetricKey = new RijndaelManaged();
symmetricKey.Mode = CipherMode.CBC;
byte[] cipherTextBytes = null;
using (ICryptoTransform encryptor = symmetricKey.CreateEncryptor
(keyBytes, initialVectorBytes))
{
using (MemoryStream memStream = new MemoryStream())
{
using (CryptoStream cryptoStream = new CryptoStream
(memStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
cipherTextBytes = memStream.ToArray();
memStream.Close();
cryptoStream.Close();
}
}
}
symmetricKey.Clear();
return Convert.ToBase64String(cipherTextBytes);
}
public static string Decrypt(string cipherText, string password,
string salt = "Kosher", string hashAlgorithm = "SHA1",
int passwordIterations = 2, string initialVector = "OFRna73m*aze01xY",
int keySize = 256)
{
if (string.IsNullOrEmpty(cipherText))
return "";
byte[] initialVectorBytes = Encoding.ASCII.GetBytes(initialVector);
byte[] saltValueBytes = Encoding.ASCII.GetBytes(salt);
byte[] cipherTextBytes = Convert.FromBase64String(cipherText);
PasswordDeriveBytes derivedPassword = new PasswordDeriveBytes
(password, saltValueBytes, hashAlgorithm, passwordIterations);
byte[] keyBytes = derivedPassword.GetBytes(keySize / 8);
RijndaelManaged symmetricKey = new RijndaelManaged();
symmetricKey.Mode = CipherMode.CBC;
byte[] plainTextBytes = new byte[cipherTextBytes.Length];
int byteCount = 0;
using (ICryptoTransform decryptor = symmetricKey.CreateDecryptor
(keyBytes, initialVectorBytes))
{
using (MemoryStream memStream = new MemoryStream(cipherTextBytes))
{
using (CryptoStream cryptoStream
= new CryptoStream(memStream, decryptor, CryptoStreamMode.Read))
{
byteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
memStream.Close();
cryptoStream.Close();
}
}
}
symmetricKey.Clear();
return Encoding.UTF8.GetString(plainTextBytes, 0, byteCount);
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
string FinalValue = AESEncryption.Encrypt("Text", "Password1", "Password2", "SHA1", 2, "16CHARSLONG12345", 256);
}
}
} |
(
