private void handleDecryptBangDiem(BangDiem item)
{
if (!String.IsNullOrEmpty(privateKey))
{
item.DiemThi = rsaCryptoService.Decrypt(privateKey, item.DiemThi.ToString());
}
}
private void handleDecryptLuong(NhanVien item)
{
var priKey = KeyRepository.GetPrivateKey(this.nhanVienDangNhap.PubKey, password);
if (!String.IsNullOrEmpty(priKey))
{
item.Luong = rsaCryptoService.Decrypt(priKey, item.Luong);
}
}
public string GenerateKeys(string key1, string key2, string dtcreate)
{
RSACryptography RSA = new RSACryptography();
string publicKey, privateKey, dtcreates;
// Generate RSA key pair
RSA.GenerateKey(out publicKey, out privateKey, out dtcreates);
string plainText = "93f99709-ce56-42a9-af7e-1d72c011c2dd";// Guid.NewGuid().ToString();
// Encrypt
string encryptedText = RSA.Encrypt(publicKey, plainText);
// Decrypt
string decryptedText = RSA.Decrypt(privateKey, encryptedText);
string giaima = RSA.Decrypt(privateKey, encryptedText);
File.WriteAllText(Application.StartupPath + "\\PrivateKey.xml", privateKey);
File.WriteAllText(Application.StartupPath + "\\PublicKey.xml", publicKey);
File.WriteAllText(Application.StartupPath + "\\DateKey.xml", dtcreates);
MessageBox.Show("The Key pair created successfully at:\n" + Application.StartupPath);
return(plainText + publicKey + privateKey + encryptedText + decryptedText);
// return "<b>Token:</b> " + Server.HtmlEncode(plainText) + "<br />" + "<b>Public key:</b> " + Server.HtmlEncode(publicKey) + "<br />" + "<b>Private key:</b> " + Server.HtmlEncode(privateKey) + "<br />" + "<b>Encrypted text:</b> " + Server.HtmlEncode(encryptedText) + "<br />" + "<b>Decrypted text:</b> " + Server.HtmlEncode(decryptedText);
}
public string GenerateKeys()
{
RSACryptography RSA = new RSACryptography();
string publicKey, privateKey;
// Generate RSA key pair
RSA.GenerateKeys(out publicKey, out privateKey);
string plainText = "93f99709-ce56-42a9-af7e-1d72c011c2dd";// Guid.NewGuid().ToString();
// Encrypt
string encryptedText = RSA.Encrypt(publicKey, plainText);
// Decrypt
string decryptedText = RSA.Decrypt(privateKey, encryptedText);
return(plainText + publicKey + privateKey + encryptedText + decryptedText);
// return "<b>Token:</b> " + Server.HtmlEncode(plainText) + "<br />" + "<b>Public key:</b> " + Server.HtmlEncode(publicKey) + "<br />" + "<b>Private key:</b> " + Server.HtmlEncode(privateKey) + "<br />" + "<b>Encrypted text:</b> " + Server.HtmlEncode(encryptedText) + "<br />" + "<b>Decrypted text:</b> " + Server.HtmlEncode(decryptedText);
}
public static void TestCommutative()
{
var rsa = new RSACryptography();
var privateKey = rsa.KeyCreator.CreatePrivateKey();
var publicKey = rsa.KeyCreator.CreatePublicKey(privateKey);
var blindKey = rsa.KeyCreator.CreateBlindKey();
var msg = Encoding.UTF7.GetBytes("sdlfjsf;slkfslkfddfshkfksjfhsjhfsjldfslkjfslakddsfklsjdflsdkfjsjgakdglkjjkdfhgdkjfghlskdhgklshdglsjdfhgjshfjsdhfkshfsdgfjshgfasldhalskdjalskfsdhjkfsdhfgsfkjaghsjlkfhasdohdfgskljafskhfgkflsdjfkljnzjzzmnznzzzzzzzzzzzzzz");
Console.WriteLine(Encoding.UTF7.GetString(msg));
var encrypted = rsa.Encrypt(publicKey, msg);
var decrypted = rsa.Decrypt(privateKey, encrypted);
Console.WriteLine(Encoding.UTF7.GetString(decrypted));
var B = Encoding.UTF8.GetBytes("B");
var blindB = rsa.BlindData(blindKey, publicKey, B);
var signB = rsa.SignData(privateKey, B);
var signBlindB = rsa.SignData(privateKey, blindB);
var blindSignB = rsa.BlindData(blindKey, publicKey, signB);
Console.WriteLine($"Commutative = {signBlindB.SequenceEqual(blindSignB)}");
Console.WriteLine($"Verify test = {rsa.VerifyData(publicKey, B, signB)}");
}
