| public Encrypt ( byte data, RSAEncryptionPadding padding ) : byte[] | ||
| data | byte | |
| padding | RSAEncryptionPadding | |
| return | byte[] | |
public static void EncryptionKeyRequest(MinecraftClient client, IPacket _packet)
{
var packet = (EncryptionKeyRequestPacket)_packet;
var random = RandomNumberGenerator.Create();
client.SharedSecret = new byte[16];
random.GetBytes(client.SharedSecret); // Generate a secure AES key
if (packet.ServerId != "-") // Online mode
{
// Authenticate with minecraft.net
var data = Encoding.ASCII.GetBytes(packet.ServerId)
.Concat(client.SharedSecret)
.Concat(packet.PublicKey).ToArray();
var hash = Cryptography.JavaHexDigest(data);
var webClient = new WebClient();
string result = webClient.DownloadString("http://session.minecraft.net/game/joinserver.jsp?user="******"&sessionId=" + Uri.EscapeUriString(client.Session.SessionId) +
"&serverId=" + Uri.EscapeUriString(hash));
if (result != "OK")
LogProvider.Log("Unable to verify session: " + result);
}
var parser = new AsnKeyParser(packet.PublicKey);
var key = parser.ParseRSAPublicKey();
// Encrypt shared secret and verification token
var crypto = new RSACryptoServiceProvider();
crypto.ImportParameters(key);
var encryptedSharedSecret = crypto.Encrypt(client.SharedSecret, false);
var encryptedVerification = crypto.Encrypt(packet.VerificationToken, false);
var response = new EncryptionKeyResponsePacket(encryptedSharedSecret, encryptedVerification);
client.SendPacket(response);
}
static async Task MainAsync(string[] args)
{
var keyClient = new KeyVaultClient((authority, resource, scope) =>
{
var adCredential = new ClientCredential(applicationId, applicationSecret);
var authenticationContext = new AuthenticationContext(authority, null);
return authenticationContext.AcquireToken(resource, adCredential).AccessToken;
});
// Get the key details
var keyIdentifier = "https://testvaultrahul.vault.azure.net/keys/rahulkey/0f653b06c1d94159bc7090596bbf7784";
var key = await keyClient.GetKeyAsync(keyIdentifier);
var publicKey = Convert.ToBase64String(key.Key.N);
using (var rsa = new RSACryptoServiceProvider())
{
var p = new RSAParameters() { Modulus = key.Key.N, Exponent = key.Key.E };
rsa.ImportParameters(p);
var byteData = Encoding.Unicode.GetBytes(textToEncrypt);
// Encrypt and Decrypt
var encryptedText = rsa.Encrypt(byteData, true);
var decryptedData = await keyClient.DecryptDataAsync(keyIdentifier, "RSA_OAEP", encryptedText);
var decryptedText = Encoding.Unicode.GetString(decryptedData.Result);
// Sign and Verify
var hasher = new SHA256CryptoServiceProvider();
var digest = hasher.ComputeHash(byteData);
var signature = await keyClient.SignAsync(keyIdentifier, "RS256", digest);
var isVerified = rsa.VerifyHash(digest, "Sha256", signature.Result);
}
}
/// <summary>
/// Genera _bytEncriptado: Es unByte[] con el contenido de llavePublica RSA encriptada (bytes) y contenido Encriptado Simetrico
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAsimEncriptar_Click(object sender, EventArgs e)
{
byte[] _bytEncriptado = null;
System.Security.Cryptography.CspParameters csp = new CspParameters();
csp.KeyContainerName = "pepe";
//Creamos una instancia del encritador publico
RSACryptoServiceProvider _objEncriptadorPublicoRSA = new RSACryptoServiceProvider(csp);
//Le asignamos la llave genarada
_objEncriptadorPublicoRSA.FromXmlString(this.txtAsimLlavePublica.Text);
if (this.chkSimetrica.Checked)
{
//Se declara la memoria para almacenar la llave utilizada por nuestro Rijndael personalizado
byte[] _bytKey = (Rijndael.Create()).Key;
//Se encripta el texto y se obtiene la llave que se utilizó para la encriptación
byte[] _contenidoEncriptadoSimetrico = MiRijndael.Encriptar(this.txtAsimAEncriptar.Text, _bytKey);
//Se encripta la llave con el algoritmo RSA
byte[] llaveEncriptadaRSA = _objEncriptadorPublicoRSA.Encrypt(_bytKey, false);
#region Se copia en un vector la llave encriptada y el contenido encriptado Simetrico (Rijndael)
_bytEncriptado = new byte[llaveEncriptadaRSA.Length + _contenidoEncriptadoSimetrico.Length];
llaveEncriptadaRSA.CopyTo(_bytEncriptado, 0);
_contenidoEncriptadoSimetrico.CopyTo(_bytEncriptado, llaveEncriptadaRSA.Length);
#endregion
}
else
{
_bytEncriptado = _objEncriptadorPublicoRSA.Encrypt(System.Text.Encoding.UTF8.GetBytes(this.txtAsimAEncriptar.Text), false);
}
this.txtAsimEncriptado.Text = Convert.ToBase64String(_bytEncriptado);
}
/// <summary>
/// Start network encryption. Automatically called by Login() if the server requests encryption.
/// </summary>
/// <returns>True if encryption was successful</returns>
private bool StartEncryption(string uuid, string sessionID, byte[] token, string serverIDhash, byte[] serverKey)
{
System.Security.Cryptography.RSACryptoServiceProvider RSAService = CryptoHandler.DecodeRSAPublicKey(serverKey);
byte[] secretKey = CryptoHandler.GenerateAESPrivateKey();
if (Settings.DebugMessages)
{
ConsoleIO.WriteLineFormatted("§8Crypto keys & hash generated.");
}
if (serverIDhash != "-")
{
Console.WriteLine("Checking Session...");
if (!ProtocolHandler.SessionCheck(uuid, sessionID, CryptoHandler.getServerHash(serverIDhash, serverKey, secretKey)))
{
handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, "Failed to check session.");
return(false);
}
}
//Encrypt the data
byte[] key_enc = dataTypes.GetArray(RSAService.Encrypt(secretKey, false));
byte[] token_enc = dataTypes.GetArray(RSAService.Encrypt(token, false));
//Encryption Response packet
SendPacket(0x01, dataTypes.ConcatBytes(key_enc, token_enc));
//Start client-side encryption
socketWrapper.SwitchToEncrypted(secretKey);
//Process the next packet
int packetID = -1;
List <byte> packetData = new List <byte>();
while (true)
{
ReadNextPacket(ref packetID, packetData);
if (packetID == 0x00) //Login rejected
{
handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, ChatParser.ParseText(dataTypes.ReadNextString(packetData)));
return(false);
}
else if (packetID == 0x02) //Login successful
{
login_phase = false;
if (!pForge.CompleteForgeHandshake())
{
return(false);
}
StartUpdating();
return(true);
}
else
{
HandlePacket(packetID, packetData);
}
}
}
public override void HandlePacket(Proxy proxy)
{
// Interact with the remote server
proxy.RemoteSharedKey = new byte[16];
RandomNumberGenerator random = RandomNumberGenerator.Create();
random.GetBytes(proxy.RemoteSharedKey);
AsnKeyParser keyParser = new AsnKeyParser(PublicKey);
var key = keyParser.ParseRSAPublicKey();
var cryptoService = new RSACryptoServiceProvider();
cryptoService.ImportParameters(key);
byte[] encryptedSharedSecret = cryptoService.Encrypt(proxy.RemoteSharedKey, false);
byte[] encryptedVerify = cryptoService.Encrypt(VerifyToken, false);
// Construct an 0xFC packet to send the server
proxy.RemoteEncryptionResponse = new byte[] { 0xFC }
.Concat(DataUtility.CreateInt16((short)encryptedSharedSecret.Length))
.Concat(encryptedSharedSecret)
.Concat(DataUtility.CreateInt16((short)encryptedVerify.Length))
.Concat(encryptedVerify).ToArray();
if (ServerId != "-")
{
// Generate session hash
byte[] hashData = Encoding.ASCII.GetBytes(ServerId)
.Concat(proxy.RemoteSharedKey)
.Concat(PublicKey).ToArray();
var hash = Cryptography.JavaHexDigest(hashData);
var webClient = new WebClient();
string result = webClient.DownloadString("http://session.minecraft.net/game/joinserver.jsp?user="******"&sessionId=" + Uri.EscapeUriString(proxy.Settings.UserSession) +
"&serverId=" + Uri.EscapeUriString(hash));
if (result != "OK")
Console.WriteLine("Warning: Unable to login as user " + proxy.Settings.Username + ", expect mixed results.");
}
// Interact with the local client
var verifyToken = new byte[4];
var csp = new RNGCryptoServiceProvider();
csp.GetBytes(verifyToken);
AsnKeyBuilder.AsnMessage encodedKey = AsnKeyBuilder.PublicKeyToX509(Proxy.ServerKey);
// Construct an 0xFD to send the client
byte[] localPacket = new[] { PacketId }
.Concat(DataUtility.CreateString("-"))
.Concat(DataUtility.CreateInt16((short)encodedKey.GetBytes().Length))
.Concat(encodedKey.GetBytes())
.Concat(DataUtility.CreateInt16((short)verifyToken.Length))
.Concat(verifyToken).ToArray();
proxy.LocalSocket.BeginSend(localPacket, 0, localPacket.Length, SocketFlags.None, null, null);
base.HandlePacket(proxy);
}
private bool StartEncryption(string uuid, string username, string sessionID, byte[] token, string serverIDhash, byte[] serverKey)
{
System.Security.Cryptography.RSACryptoServiceProvider RSAService = CryptoHandler.DecodeRSAPublicKey(serverKey);
byte[] secretKey = CryptoHandler.GenerateAESPrivateKey();
if (Settings.DebugMessages)
{
ConsoleIO.WriteLineFormatted("§8Crypto keys & hash generated.");
}
if (serverIDhash != "-")
{
Console.WriteLine("Checking Session...");
if (!ProtocolHandler.SessionCheck(uuid, sessionID, CryptoHandler.getServerHash(serverIDhash, serverKey, secretKey)))
{
handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, "Failed to check session.");
return(false);
}
}
//Encrypt the data
byte[] key_enc = RSAService.Encrypt(secretKey, false);
byte[] token_enc = RSAService.Encrypt(token, false);
byte[] keylen = BitConverter.GetBytes((short)key_enc.Length);
byte[] tokenlen = BitConverter.GetBytes((short)token_enc.Length);
Array.Reverse(keylen);
Array.Reverse(tokenlen);
//Building the packet
byte[] data = new byte[5 + (short)key_enc.Length + (short)token_enc.Length];
data[0] = 0xFC;
keylen.CopyTo(data, 1);
key_enc.CopyTo(data, 3);
tokenlen.CopyTo(data, 3 + (short)key_enc.Length);
token_enc.CopyTo(data, 5 + (short)key_enc.Length);
//Send it back
Send(data);
//Getting the next packet
byte[] pid = new byte[1];
Receive(pid, 0, 1, SocketFlags.None);
if (pid[0] == 0xFC)
{
readData(4);
s = CryptoHandler.getAesStream(c.GetStream(), secretKey);
encrypted = true;
return(true);
}
else
{
ConsoleIO.WriteLineFormatted("§8Invalid response to StartEncryption packet");
return(false);
}
}
/// <summary>
/// 由于RSA的rgb参数不能超过字符串长度为117，进行分截加密,获取公钥
/// </summary>
/// <param name="str">The STR.</param>
/// <returns></returns>
public static string RSAEncrypt(string str, string publcikeypath)
{
string ls_str = string.Empty;
string ls_temp = string.Empty;
string ls_encrypt_str = string.Empty;
string publickey;
byte[] byte_encrypt;
int ll_num = 0;
ls_str = str;
System.Text.Encoding utf8 = new System.Text.UTF8Encoding();
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
try
{
StreamReader reader = new StreamReader(publcikeypath);
publickey = reader.ReadToEnd();
RSA.FromXmlString(publickey);
}
catch (Exception ex)
{
MessageBox.Show("加密文件没有在当前执行目录：" + ex.Message);
return string.Empty;
}
if (ls_str == string.Empty || ls_str == "")
return ls_encrypt_str;
do
{
if (ls_str.Length > 100)
{
ls_temp = ls_str.Substring(0, 100);
ls_str = ls_str.Substring(100);
byte_encrypt = utf8.GetBytes(ls_temp);
byte_encrypt = RSA.Encrypt(byte_encrypt, false);
ls_temp = System.Convert.ToBase64String(byte_encrypt);
ll_num = ll_num + 1;
ls_encrypt_str = ls_encrypt_str + "<" + ll_num.ToString() + ">" + ls_temp + "</" + ll_num.ToString() + ">";
}
else
{
ls_temp = ls_str;
byte_encrypt = utf8.GetBytes(ls_temp);
byte_encrypt = RSA.Encrypt(byte_encrypt, false);
ls_temp = System.Convert.ToBase64String(byte_encrypt);
ll_num = ll_num + 1;
ls_encrypt_str = ls_encrypt_str + "<" + ll_num.ToString() + ">" + ls_temp + "</" + ll_num.ToString() + ">";
break;
}
} while (2 > 1);
return ls_encrypt_str;
}
/// <summary>
/// Start network encryption. Automatically called by Login() if the server requests encryption.
/// </summary>
/// <returns>True if encryption was successful</returns>
private bool StartEncryption(string uuid, string sessionID, byte[] token, string serverIDhash, byte[] serverKey)
{
System.Security.Cryptography.RSACryptoServiceProvider RSAService = CryptoHandler.DecodeRSAPublicKey(serverKey);
byte[] secretKey = CryptoHandler.GenerateAESPrivateKey();
ConsoleIO.WriteLineFormatted("§8Crypto keys & hash generated.");
if (serverIDhash != "-")
{
Console.WriteLine("Checking Session...");
if (!ProtocolHandler.SessionCheck(uuid, sessionID, CryptoHandler.getServerHash(serverIDhash, serverKey, secretKey)))
{
handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, "Failed to check session.");
return(false);
}
}
//Encrypt the data
byte[] key_enc = RSAService.Encrypt(secretKey, false);
byte[] token_enc = RSAService.Encrypt(token, false);
byte[] key_len = BitConverter.GetBytes((short)key_enc.Length); Array.Reverse(key_len);
byte[] token_len = BitConverter.GetBytes((short)token_enc.Length); Array.Reverse(token_len);
//Encryption Response packet
byte[] packet_id = getVarInt(0x01);
byte[] encryption_response = concatBytes(packet_id, key_len, key_enc, token_len, token_enc);
byte[] encryption_response_tosend = concatBytes(getVarInt(encryption_response.Length), encryption_response);
Send(encryption_response_tosend);
//Start client-side encryption
s = CryptoHandler.getAesStream(c.GetStream(), secretKey, this);
encrypted = true;
//Read and skip the next packet
int received_packet_size = readNextVarInt();
int received_packet_id = readNextVarInt();
bool encryption_success = (received_packet_id == 0x02);
if (received_packet_id == 0)
{
handler.OnConnectionLost(ChatBot.DisconnectReason.LoginRejected, ChatParser.ParseText(readNextString()));
}
else
{
readData(received_packet_size - getVarInt(received_packet_id).Length);
}
if (encryption_success)
{
StartUpdating();
}
return(encryption_success);
}
public static NCryptoParms EncryptCode(string decData, string spKey) {
NCryptoParms parms = new NCryptoParms();
ICryptoTransform encryptor;
CryptoStream cStream;
MemoryStream mStream = new MemoryStream();
try {
// Generate a new RSA public/private key pair
// This key will be used to signature the DES IV and Key.
RSACryptoServiceProvider jRsa = new RSACryptoServiceProvider();
byte[] signature = jRsa.SignData(sign, new MD5CryptoServiceProvider());
parms.jpbkey =
Convert.ToBase64String(Encoding.ASCII.GetBytes(jRsa.ToXmlString(false)));
parms.jprkey =
Convert.ToBase64String(Encoding.ASCII.GetBytes(jRsa.ToXmlString(true)));
parms.signature = Convert.ToBase64String(signature);
jRsa.Clear();
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(
Encoding.ASCII.GetString(Convert.FromBase64String(spKey)));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.GenerateIV();
des.GenerateKey();
parms.key = Convert.ToBase64String(rsa.Encrypt(des.Key, false));
parms.iv = Convert.ToBase64String(rsa.Encrypt(des.IV, false));
encryptor = des.CreateEncryptor(des.Key, des.IV);
cStream = new CryptoStream(mStream, encryptor, CryptoStreamMode.Write);
byte[] bytesIn = Encoding.ASCII.GetBytes(decData);
cStream.Write(bytesIn, 0, bytesIn.Length);
cStream.FlushFinalBlock();
cStream.Close();
byte[] bytesOut = mStream.ToArray();
mStream.Close();
parms.enc = Convert.ToBase64String(bytesOut);
} catch {
mStream.Close();
}
return parms;
}
public void DoEncryption()
{
// create a symmetric encryptor
TripleDESCryptoServiceProvider TDES = new TripleDESCryptoServiceProvider ();
// create IV and Key need for symmetric encryption
TDES.GenerateIV();
TDES.GenerateKey();
// create an asymmetric encryptor
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider ();
string AsymKeys = RSA.ToXmlString (true);
// export the public and private keys to a file
WriteKeyToFile(AsymKeys);
// asymmetric encryption is good for
// small data, hence, we use it to encrypted
// IV and Key for symmetric encryption
byte[] encryptedIV = RSA.Encrypt(TDES.IV, false);
byte[] encryptedKey = RSA.Encrypt(TDES.Key, false);
// convert the length of IV and Key (e.g. number of bytes used)
// into a byte, e.g. 4 to 0000 0100
// as default length of a Integer in .NET is 32,
// the result byte length should be 4 bytes, i.e. 32/8
byte[] IVSize = BitConverter.GetBytes(encryptedIV.Length);
byte[] keySize = BitConverter.GetBytes(encryptedKey.Length);
// write out the IV length, the key length,
// the encrypted iv, the encrypted key and the actual
// date to a file using the symmetric encryptor.
using(FileStream ostream = new FileStream("encrypted.enc", FileMode.Create)){
ostream.Write(IVSize, 0, IVSize.Length);
ostream.Write(keySize, 0, keySize.Length);
ostream.Write(encryptedIV, 0, encryptedIV.Length);
ostream.Write(encryptedKey, 0, encryptedKey.Length);
CryptoStream cstream = new CryptoStream(ostream,
TDES.CreateEncryptor(),
CryptoStreamMode.Write);
// encrypt the data using the crypto stream
EncryptFile(cstream);
// close streams
cstream.Close();
ostream.Close();
}
}
/// <summary>
/// Metoda za asimetrično kriptiranje
/// </summary>
/// <param name="file"></param>
public void AsymetriycCrypt(string file)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
StreamReader streamReader = new StreamReader("javni_kljuc.txt");
string publicKey = streamReader.ReadToEnd();
rsa.FromXmlString(publicKey);
streamReader.Close();
string record = file + ".rsa";
FileStream fstreamU = File.OpenRead(file),
fstreamO = new FileStream(record, FileMode.Create, FileAccess.ReadWrite);
BinaryWriter bw = new BinaryWriter(fstreamO);
BinaryReader binReader = new BinaryReader(fstreamU);
byte[] bytes = binReader.ReadBytes((int)fstreamU.Length);
binReader.Close();
byte[] crypt = rsa.Encrypt(bytes, false);
bw.Write(crypt);
bw.Flush();
bw.Close();
bw.Dispose();
fstreamU.Close();
fstreamU.Dispose();
}
public void Run()
{
var _exportKey = new RSACryptoServiceProvider();
string publicKeyXML = _exportKey.ToXmlString(false);
string privateKeyXML = _exportKey.ToXmlString(true);
var ByteConverter = new UnicodeEncoding();
byte[] dataToEncrypt = ByteConverter.GetBytes("My Secret Data!");
byte[] encryptedData;
using (var RSA = new RSACryptoServiceProvider())
{
RSA.FromXmlString(publicKeyXML);
encryptedData = RSA.Encrypt(dataToEncrypt, false);
}
byte[] decryptedData;
using (var RSA = new RSACryptoServiceProvider())
{
RSA.FromXmlString(privateKeyXML);
decryptedData = RSA.Decrypt(encryptedData, false);
}
string decryptedString = ByteConverter.GetString(decryptedData);
Console.WriteLine(decryptedString); // Displays: My Secret Data! }
}
public UniRx.IObservable <bool> DumpAutoLogin(string filename)
{
return(Observable.Range(0, 1)
.Select(_ => {
if (context.accept_equip == null)
{
throw new System.MissingFieldException("context", "accept_equip");
}
var body = new AutoLoginFile();
body.token = context.token;
using (var rsa = new System.Security.Cryptography.RSACryptoServiceProvider()) {
rsa.FromXmlString(context.public_key);
var encrypted = rsa.Encrypt(context.token_time.ToString());
body.password = Convert.ToBase64String(encrypted);
}
var json = Newtonsoft.Json.JsonConvert.SerializeObject(body);
var pbkdf = new Rfc2898DeriveBytes(json, SecureHelper.APP_SALT.GetByte(Convert.FromBase64String), 3483);
body.signature = Convert.ToBase64String(pbkdf.GetBytes(256));
JsonDB db = new JsonDB("account");
var obj = JToken.FromObject(body);
db.Put(filename, obj);
return true;
}));
}
// 暗号化
public static byte[] Encript(String publicKey, byte[] src)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(publicKey);
return rsa.Encrypt(src, false);
}
/// <summary>
/// RSA 加密
/// </summary>
/// <param name="sSource" >明文</param>
/// <param name="sPublicKey" >公钥</param>
public static string EncryptString(string sSource, string sPublicKey)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
string plaintext = sSource;
rsa.FromXmlString(sPublicKey);
byte[] cipherbytes;
byte[] byteEn = rsa.Encrypt(Encoding.UTF8.GetBytes("a"), false);
cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(plaintext), false);
StringBuilder sbString = new StringBuilder();
for (int i = 0; i < cipherbytes.Length; i++)
{
sbString.Append(cipherbytes[i] + ",");
}
return sbString.ToString();
}
private static byte[] cifrar(string texto, string xmlKeys)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(xmlKeys);
byte[] datosEnc = rsa.Encrypt(Encoding.Default.GetBytes(texto), false);
return datosEnc;
}
public string EncryptData(string data)
{
try
{
//initialze the byte arrays to the public key information.
byte[] PublicKey = _publicKey.ToArray();
byte[] Exponent = _exponent.ToArray();
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Create a new instance of RSAParameters.
RSAParameters RSAKeyInfo = new RSAParameters();
//Set RSAKeyInfo to the public key values.
RSAKeyInfo.Modulus = PublicKey;
RSAKeyInfo.Exponent = Exponent;
//Import key parameters into RSA.
RSA.ImportParameters(RSAKeyInfo);
var dataBytes = ASCIIEncoding.ASCII.GetBytes(data);
var encryptedBytes = RSA.Encrypt(dataBytes, false);
var encryptedValue = BitConverter.ToString(encryptedBytes).Replace("-", "").ToLower();
return encryptedValue;
}
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
}
return null;
}
public override void Encrypt()
{
//RSA Rsa = new RSA();
//base.Component.Text = Rsa.encode(base.Component.tp.Text);
try
{
UnicodeEncoding ByteConverter = new UnicodeEncoding();
byte[] encryptedData;
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSA.ImportParameters(RSA.ExportParameters(false));
byte[] Data = ByteConverter.GetBytes(base.Component.tp.Text.ToString());
encryptedData = RSA.Encrypt(Data , false);
}
base.Component.Text = ByteConverter.GetString(encryptedData);
}
//Catch and display a CryptographicException
//to the console.
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
base.Component.Text = base.Component.tp.Text.ToString();
}
}
public string EncryptString(string inputString, int dwKeySize,
string xmlString)
{
RSACryptoServiceProvider rsaCryptoServiceProvider =
new RSACryptoServiceProvider(dwKeySize);
rsaCryptoServiceProvider.FromXmlString(xmlString);
int keySize = dwKeySize / 8;
byte[] bytes = Encoding.UTF32.GetBytes(inputString);
int maxLength = keySize - 42;
int dataLength = bytes.Length;
int iterations = dataLength / maxLength;
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i <= iterations; i++)
{
byte[] tempBytes = new byte[
(dataLength - maxLength * i > maxLength) ? maxLength :
dataLength - maxLength * i];
Buffer.BlockCopy(bytes, maxLength * i, tempBytes, 0,
tempBytes.Length);
byte[] encryptedBytes = rsaCryptoServiceProvider.Encrypt(tempBytes,
true);
Array.Reverse(encryptedBytes);
stringBuilder.Append(Convert.ToBase64String(encryptedBytes));
}
return stringBuilder.ToString();
}
public string EncryptData(string data2Encrypt, string strPublicKey)
{
RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
provider.FromXmlString(strPublicKey);
byte[] bytes = Encoding.UTF8.GetBytes(data2Encrypt);
return Convert.ToBase64String(provider.Encrypt(bytes, false));
}
/// <summary>
/// 加密
/// </summary>
/// <param name="publicKey">公钥</param>
/// <param name="data">要加密的字串</param>
/// <returns></returns>
public virtual string Encode(string publicKey, string data)
{
var rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(publicKey);
var cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(data), false);
return Convert.ToBase64String(cipherbytes);
}
private readonly static RSAParameters PrivateParams = Rsa.ExportParameters(true); //Complete key pairs.
/// <summary>
/// Encrypt an input string
/// </summary>
/// <param name="input">the input string to be encrpty</param>
/// <param name="signature">the private key signature</param>
/// <returns>A Base 64 encrypted string or empty if can't encrpyt</returns>
public static string Encrpyt(string input, out byte[] signature)
{
signature = null;
try
{
if (string.IsNullOrEmpty(input)) return string.Empty;
var provider = new RSACryptoServiceProvider(new CspParameters { Flags = CspProviderFlags.UseMachineKeyStore });
provider.ImportParameters(PublicParams);
var buffer = Encoding.ASCII.GetBytes(input);
var encryptedbuffer = provider.Encrypt(buffer, false);
var hash = new SHA1Managed();
provider.ImportParameters(PrivateParams);
var hashedData = hash.ComputeHash(encryptedbuffer);
signature = provider.SignHash(hashedData, CryptoConfig.MapNameToOID("SHA1"));
var stringBuilder = new StringBuilder();
stringBuilder.Append(Convert.ToBase64String(encryptedbuffer));
return stringBuilder.ToString();
}
catch
{
return string.Empty;
}
}
public string EncryptString( string inputString, int dwKeySize, string xmlString )
{
// TODO: Add Proper Exception Handlers
RSACryptoServiceProvider rsaCryptoServiceProvider = new RSACryptoServiceProvider( dwKeySize );
rsaCryptoServiceProvider.FromXmlString( xmlString );
int keySize = dwKeySize / 8;
byte[] bytes = Encoding.UTF32.GetBytes( inputString );
// The hash function in use by the .NET RSACryptoServiceProvider here is SHA1
// int maxLength = ( keySize ) - 2 - ( 2 * SHA1.Create().ComputeHash( rawBytes ).Length );
int maxLength = keySize - 42;
int dataLength = bytes.Length;
int iterations = dataLength / maxLength;
StringBuilder stringBuilder = new StringBuilder();
for( int i = 0; i <= iterations; i++ )
{
byte[] tempBytes = new byte[ ( dataLength - maxLength * i > maxLength ) ? maxLength : dataLength - maxLength * i ];
Buffer.BlockCopy( bytes, maxLength * i, tempBytes, 0, tempBytes.Length );
byte[] encryptedBytes = rsaCryptoServiceProvider.Encrypt( tempBytes, true );
// Be aware the RSACryptoServiceProvider reverses the order of encrypted bytes after encryption and before decryption.
// If you do not require compatibility with Microsoft Cryptographic API (CAPI) and/or other vendors.
// Comment out the next line and the corresponding one in the DecryptString function.
Array.Reverse( encryptedBytes );
// Why convert to base 64?
// Because it is the largest power-of-two base printable using only ASCII characters
stringBuilder.Append( Convert.ToBase64String( encryptedBytes ) );
}
return stringBuilder.ToString();
}
public static void EncryptSomeText()
{
//Init keys
GeneratePublicAndPrivateKeys();
UnicodeEncoding ByteConverter = new UnicodeEncoding();
byte[] dataToEncrypt = ByteConverter.GetBytes("My ultra secret message!");
byte[] encryptedData;
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSA.FromXmlString(publicKeyXML);
encryptedData = RSA.Encrypt(dataToEncrypt, false);
}
byte[] decryptedData;
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSA.FromXmlString(privateKeyXML);
decryptedData = RSA.Decrypt(encryptedData, false);
}
string decryptedString = ByteConverter.GetString(decryptedData);
Console.WriteLine(decryptedString);
}
public static string Text_Encryption(string text, int bits, string encryption_key)
{
StringBuilder result = new StringBuilder("");
try
{
RSACryptoServiceProvider rsacsp = new RSACryptoServiceProvider(bits);
rsacsp.FromXmlString(encryption_key);
int key = bits / 8;
Byte[] bites = Encoding.UTF32.GetBytes(text);
int max_length = key - 42;
int data_length = bites.Length;
int iterations = data_length / max_length;
for (int i = 0; i <= iterations; i++)
{
int total_bytes = (data_length - max_length * i > max_length) ? max_length : data_length - max_length * i;
Byte[] temp_bytes = new Byte[total_bytes];
Buffer.BlockCopy(bites, max_length * i, temp_bytes, 0, temp_bytes.Length);
Byte[] encrypted_bytes = rsacsp.Encrypt(temp_bytes, true);
Array.Reverse(encrypted_bytes);
result.Append(Convert.ToBase64String(encrypted_bytes));
}
}
catch (Exception e)
{
result.Append("<Error>" + e.Message + "</Error>");
}
return result.ToString();
}
public static Boolean Test(int keySize)
{
Boolean bRes = true;
Byte[] abPlain = { 0, 1, 2, 3, 4, 5, 6, 7 };
Byte[] abCipher = null;
int kl = keySize;
try
{
using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(kl))
{
abCipher = rsa.Encrypt(abPlain);
Log.Comment("Cipher is : ");
PrintByteArray(abCipher);
abCipher = rsa.Decrypt(abCipher);
}
Log.Comment("Decrypted plaintext is : ");
PrintByteArray(abCipher);
if (!Compare(abPlain, abCipher))
{
bRes = false;
Log.Comment("Failed to decrypt to the original plaintext");
}
}
catch (Exception e)
{
Log.Comment("Exception ocured :\n" + e.ToString());
bRes = false;
}
return bRes;
}
public static string Encrypt(string data)
{
try
{
var rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(_publicKey);
var dataToEncrypt = _encoder.GetBytes(data);
var encryptedByteArray = rsa.Encrypt(dataToEncrypt, false).ToArray();
var length = encryptedByteArray.Count();
var item = 0;
var sb = new StringBuilder();
foreach (var x in encryptedByteArray)
{
item++;
sb.Append(x);
if (item < length)
sb.Append(",");
}
return sb.ToString();
}
catch (Exception)
{
throw new RSAException();
}
}
public string RSAEncrypt(string xmlPublicKey, byte[] EncryptString)
{
System.Security.Cryptography.RSACryptoServiceProvider rSACryptoServiceProvider = new System.Security.Cryptography.RSACryptoServiceProvider();
rSACryptoServiceProvider.FromXmlString(xmlPublicKey);
byte[] inArray = rSACryptoServiceProvider.Encrypt(EncryptString, false);
return(System.Convert.ToBase64String(inArray));
}
static public byte[] RSAEncrypt(int bits, byte[] dataToEncrypt, RSAParameters rsaKeyInfo, bool doOAEPPadding)
{
try
{
byte[] encryptedData;
//Create a new instance of RSACryptoServiceProvider.
using (var rsa = new RSACryptoServiceProvider(bits))
{
//Import the RSA Key information. This only needs
//toinclude the public key information.
rsa.ImportParameters(rsaKeyInfo);
var rsaExportParameters = rsa.ExportParameters(true);
var rsaFormatter = new RSAPKCS1SignatureFormatter(rsa);
rsaFormatter.SetHashAlgorithm("SHA256");
//Encrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
encryptedData = rsa.Encrypt(dataToEncrypt, doOAEPPadding);
}
return encryptedData;
}
//Catch and display a CryptographicException
//to the console.
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
return null;
}
}
static public byte[] RSAEncrypt(byte[] DataToEncrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
{
try
{
byte[] encryptedData;
//Create a new instance of RSACryptoServiceProvider.
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
//Import the RSA Key information. This only needs
//toinclude the public key information.
RSA.ImportParameters(RSAKeyInfo);
//Encrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
encryptedData = RSA.Encrypt(DataToEncrypt, DoOAEPPadding);
}
return encryptedData;
}
//Catch and display a CryptographicException
//to the console.
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
return null;
}
}
//static RSACryptoServiceProvider RSA;
//public static void ExportParameters()
//{
// var publicKey = RSA.ExportParameters(false);
// // +Exponent { byte[3]}
// //+Modulus { byte[256]}
//}
public async Task<byte[]> Encrypt(byte[] Exponent, byte[] Modulus)
{
// https://sites.google.com/a/jsc-solutions.net/backlog/knowledge-base/2015/201503/20150323
// encrypted state sharing.
// what about import?
// http://bouncy-castle.1462172.n4.nabble.com/Interoperability-issue-with-SunJCE-OAEP-td4656157.html
// http://www.w3.org/TR/WebCryptoAPI/#rsa-oaep
// RSA/ECB/OAEPWithSHA-1AndMGF1Padding
// X:\jsc.svn\examples\java\hybrid\JVMCLRCryptoKeyExport\JVMCLRCryptoKeyExport\Program.cs
//var n = new RSACryptoServiceProvider(2048);
var n = new RSACryptoServiceProvider();
// can we import in java android?
n.ImportParameters(
new RSAParameters { Exponent = Exponent, Modulus = Modulus }
);
// http://stackoverflow.com/questions/9839274/rsa-encryption-by-supplying-modulus-and-exponent
var value = n.Encrypt(
Encoding.UTF8.GetBytes("hello from server"), fOAEP: true
);
//Array.Reverse(value);
return value;
}
public byte[] Encrypt(byte[] Data, int Offset, int Length)
{
lock (rsa)
{
int ExpectedSize = (KeySize / 8) * (Length / EncChunkSize);
using (MemoryStream stream = new MemoryStream(Data.Length + ExpectedSize))
{
int LengthLeft = Length;
if (PublicKey != null && PublicKey.Length > 0)
{
rsa.FromXmlString(PublicKey);
}
for (int i = Offset; i < Length; i += EncChunkSize)
{
int size = i + EncChunkSize < Length ? EncChunkSize : LengthLeft;
byte[] temp = new byte[size];
Array.Copy(Data, i, temp, 0, size);
byte[] encrypted = rsa.Encrypt(temp, PkcsPadding);
stream.Write(encrypted, 0, encrypted.Length);
if (LengthLeft >= EncChunkSize)
{
LengthLeft -= size;
}
}
return(stream.ToArray());
}
}
}
/// <summary>
/// 公钥加密
/// </summary>
/// <param name="publichKey"></param>
/// <param name="strData"></param>
public static string EncryptRSA(string publicKey, string strData)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(publicKey);
byte[] dataRSAed = rsa.Encrypt(Encoding.UTF8.GetBytes(strData), false);
return CommonHelper.ByteArrayToString(dataRSAed);
}
public string RSAEncrypt(string xmlPublicKey, byte[] EncryptString)
{
RSACryptoServiceProvider provider1 = new RSACryptoServiceProvider();
provider1.FromXmlString(xmlPublicKey);
byte[] buffer1 = provider1.Encrypt(EncryptString, false);
return Convert.ToBase64String(buffer1);
}
/// <summary>
/// 公開鍵を使って文字列を暗号化する
/// </summary>
/// <param name="str">暗号化する文字列</param>
/// <returns>暗号化された文字列</returns>
public static string ClientEncrypt(string str)
{
try
{
//RSACryptoServiceProviderオブジェクトの作成
var rsa = new System.Security.Cryptography.RSACryptoServiceProvider(KeySize);
//公開鍵を指定
rsa.FromXmlString(clientPublicKey);
//暗号化する文字列をバイト配列に
byte[] data = System.Text.Encoding.UTF8.GetBytes(str);
// データサイズのチェック
if (data.Length > rsa.KeySize / 8 - 11)
{
throw new Exception();
}
//暗号化する
//（XP以降の場合のみ2項目にTrueを指定し、OAEPパディングを使用できる）
// RSACryptoServiceProvider.KeySize プロパティで取得できるキーサイズが1024ビットだとすると、暗号化されるデータの最大長は、 1024/8-11=117バイト となります。
byte[] encryptedData = rsa.Encrypt(data, false);
//Base64で結果を文字列に変換
return(System.Convert.ToBase64String(encryptedData));
}
catch (Exception)
{
}
return(null);
}
protected void btnEncrypt_Click(object sender, EventArgs e)
{
try
{
string dataToEncrypt = "revathis";
// byte[] inputData = null;
byte[] encryptedData;
// inputData= Convert.ToByte(dataToEncrypt);
using (RSACryptoServiceProvider rsaServiceProvider = new RSACryptoServiceProvider())
{
// dataToEncrypt
//inputData = rsaServiceProvider.
encryptedData= rsaServiceProvider.Encrypt(Encoding.ASCII.GetBytes(dataToEncrypt), false);
Response.Write("Encrypted Data: ");
foreach (byte byteItem in encryptedData)
{
Response.Write(byteItem);
}
}
}
catch (Exception)
{
throw;
}
}
public static string RSAEncrypt(string source, string xmlKey) {
using (var rsa = new RSACryptoServiceProvider(1024)) {
rsa.FromXmlString(xmlKey);
var encrypted = rsa.Encrypt(Encoding.UTF8.GetBytes(source), false);
return BytesToHex(encrypted);
}
}
static void Main(string[] args)
{
byte[] key = Encoding.UTF8.GetBytes("fade3390ab9d49c88f2e0e69ed6e40af");
System.Security.Cryptography.RSACryptoServiceProvider RSACryp = null;
RSACryp = GetPublicKey();
byte[] bytesEncrypted = RSACryp.Encrypt(key, false);
var str = Convert.ToBase64String(bytesEncrypted);
}
public string RSAEncrypt(string xmlPublicKey, string m_strEncryptString)
{
System.Security.Cryptography.RSACryptoServiceProvider rSACryptoServiceProvider = new System.Security.Cryptography.RSACryptoServiceProvider();
rSACryptoServiceProvider.FromXmlString(xmlPublicKey);
byte[] bytes = new System.Text.UnicodeEncoding().GetBytes(m_strEncryptString);
byte[] inArray = rSACryptoServiceProvider.Encrypt(bytes, false);
return(System.Convert.ToBase64String(inArray));
}
/// <summary>
/// Encrypt data by public key.
/// </summary>
/// <param name="dataBytes">Need to encrypt data</param>
/// <param name="fOEAP"></param>
/// <returns></returns>
public byte[] EncryptByPublicKey(byte[] dataBytes, bool fOEAP)
{
if (PublicRsa is null)
{
throw new ArgumentException("public key can not null");
}
return(PublicRsa.Encrypt(dataBytes, fOEAP));
}
/// <summary>
/// 公開鍵を使って文字列を暗号化する
/// </summary>
/// <param name="str">暗号化する文字列</param>
/// <param name="publicKey">暗号化に使用する公開鍵(XML形式)</param>
/// <returns>暗号化された文字列</returns>
public static string Encrypt(string str, string publicKey)
{
System.Security.Cryptography.RSACryptoServiceProvider rsa =
new System.Security.Cryptography.RSACryptoServiceProvider();
rsa.FromXmlString(publicKey);
byte[] data = System.Text.Encoding.UTF8.GetBytes(str);
byte[] encryptedData = rsa.Encrypt(data, false);
return(System.Convert.ToBase64String(encryptedData));
}
public string UseSystemRsaDataEncrypt(string needEncryptContent)
{
#region Use System Default Encrypt Mether Handler Data
RSAParameters rsaDefineRap = ConvertPublicKeyToRsaInfo();
string modulus = Convert.ToBase64String(rsaDefineRap.Modulus);
string exponent = Convert.ToBase64String(rsaDefineRap.Exponent);
string publickey = @"<RSAKeyValue><Modulus>" + modulus + "</Modulus><Exponent>" + exponent + "</Exponent></RSAKeyValue>";
RSACryptoServiceProvider rsaCrypt = new System.Security.Cryptography.RSACryptoServiceProvider();
rsaCrypt.FromXmlString(publickey);
byte[] contentBytes = System.Text.Encoding.UTF8.GetBytes(needEncryptContent);
int maxBlockSize = rsaCrypt.KeySize / 8 - 11;
if (contentBytes.Length <= maxBlockSize)
{
return(Convert.ToBase64String(rsaCrypt.Encrypt(contentBytes, false)));
}
using (MemoryStream PlaiStream = new MemoryStream(contentBytes))
using (MemoryStream CrypStream = new MemoryStream())
{
Byte[] Buffer = new Byte[maxBlockSize];
int BlockSize = PlaiStream.Read(Buffer, 0, maxBlockSize);
while (BlockSize > 0)
{
#region Merge Spilt More Part About Rsa Encrypt String
Byte[] ToEncrypt = new Byte[BlockSize];
Array.Copy(Buffer, 0, ToEncrypt, 0, BlockSize);
Byte[] Cryptograph = DataEncryptWithRsa(ToEncrypt);
CrypStream.Write(Cryptograph, 0, Cryptograph.Length);
BlockSize = PlaiStream.Read(Buffer, 0, maxBlockSize);
#endregion
}
byte[] encryBytes = rsaCrypt.Encrypt(System.Text.Encoding.UTF8.GetBytes("Hello World"), false);
return(Convert.ToBase64String(encryBytes));
}
#endregion
}
/// <summary>
/// RSA加密数据
/// </summary>
/// <param name="express">要加密数据</param>
/// <param name="KeyContainerName">密匙容器的名称</param>
/// <returns></returns>
public static string RSAEncryption(string express, string KeyContainerName = null)
{
System.Security.Cryptography.CspParameters param = new System.Security.Cryptography.CspParameters();
param.KeyContainerName = KeyContainerName ?? "default"; //密匙容器的名称，保持加密解密一致才能解密成功
using (System.Security.Cryptography.RSACryptoServiceProvider rsa = new System.Security.Cryptography.RSACryptoServiceProvider(param))
{
byte[] plaindata = System.Text.Encoding.ASCII.GetBytes(express); //将要加密的字符串转换为字节数组
byte[] encryptdata = rsa.Encrypt(plaindata, false); //将加密后的字节数据转换为新的加密字节数组
return(Convert.ToBase64String(encryptdata)); //将加密后的字节数组转换为字符串
}
}
public static string encrypt(string elementToEncrypt, string pathPrivateKey)
{
string pem = System.IO.File.ReadAllText(pathPrivateKey);
byte[] Buffer = getBytesFromPEMFile(pem, "PUBLIC KEY");
System.Security.Cryptography.RSACryptoServiceProvider rsa = new System.Security.Cryptography.RSACryptoServiceProvider();
System.Security.Cryptography.RSAParameters rsaParam = rsa.ExportParameters(false);
rsaParam.Modulus = Buffer;
rsa.ImportParameters(rsaParam);
byte[] text = Encoding.UTF8.GetBytes(elementToEncrypt); // Convert.FromBase64String(elementToEncrypt);
byte[] encryptedMessageByte = rsa.Encrypt(text, false);
return(Convert.ToBase64String(encryptedMessageByte));
}
/// <summary>
/// 公開鍵を使って暗号化する
/// </summary>
/// <param name="str">暗号化するデータ</param>
/// <returns>暗号化されたデータ</returns>
public static byte[] EncryptBigData(byte[] targetData)
{
try
{
//RSACryptoServiceProviderオブジェクトの作成
var rsa = new System.Security.Cryptography.RSACryptoServiceProvider(KeySize);
//公開鍵を指定
rsa.FromXmlString(publicKey);
int blockNumber = targetData.Length;
blockNumber /= rsa.KeySize / 8 - 11;
if (targetData.Length % (rsa.KeySize / 8 - 11) != 0)
{
blockNumber++;
}
int totalSize = blockNumber * (rsa.KeySize / 8);
byte[] resultData = new byte[totalSize];
for (int index = 0; index < blockNumber; index++)
{
//暗号化する
//（XP以降の場合のみ2項目にTrueを指定し、OAEPパディングを使用できる）
// RSACryptoServiceProvider.KeySize プロパティで取得できるキーサイズが1024ビットだとすると、暗号化されるデータの最大長は、 1024/8-11=117バイト となります。
int tempSize = rsa.KeySize / 8 - 11;
if (targetData.Length - index * tempSize < tempSize)
{
tempSize = targetData.Length - index * tempSize;
}
byte[] tempData = new byte[tempSize];
Buffer.BlockCopy(targetData, index * (rsa.KeySize / 8 - 11), tempData, 0, tempSize);
byte[] encryptedData = rsa.Encrypt(tempData, false);
Buffer.BlockCopy(encryptedData, 0, resultData, index * (rsa.KeySize / 8), encryptedData.Length);
}
return(resultData);
}
catch (Exception)
{
}
return(null);
}
public void RSA_SendString(String _TxData)
{
//Pad the string length with whitespace to make a size evenly divisible into blocks:
int toAdd = _TxData.Length % BlockSize;
for (int i = 0; i < toAdd; i++)
{
_TxData = _TxData.Insert(_TxData.Length, " ");
}
//Figure out how many blocks need to be transmitted:
int numBlocks = _TxData.Length / BlockSize;
//Start the message transmit:
m_CommStack.StartEncryptedMessage(numBlocks);
//Encrypt the blocks and dump into the output stream:
for (int i = 0; i < numBlocks; i++)
{
char[] temp = _TxData.ToCharArray(i * BlockSize, BlockSize);
byte[] bytes = new byte[BlockSize];
int j = 0;
foreach (char c in temp)
{
bytes[j++] = Convert.ToByte(c);
}
byte[] encrypted = m_RSAEncryptSvc.Encrypt(bytes, false);
//Transmit the encrypted block.
m_CommStack.TransmitEncryptedBlock(BlockSize, encrypted);
}
//Transmit end encrypted message
m_CommStack.EndEncryptedMessage();
}
public string Encrypt(string publicKey, string plainText)
{
System.Security.Cryptography.CspParameters cspParams = null;
System.Security.Cryptography.RSACryptoServiceProvider rsaProvider = null;
byte[] plainBytes = null;
byte[] encryptedBytes = null;
string result = "";
try
{
cspParams = new System.Security.Cryptography.CspParameters();
cspParams.ProviderType = 1;
rsaProvider = new System.Security.Cryptography.RSACryptoServiceProvider(cspParams);
rsaProvider.FromXmlString(publicKey);
plainBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
encryptedBytes = rsaProvider.Encrypt(plainBytes, false);
result = Convert.ToBase64String(encryptedBytes);
}
catch (Exception ex) { Log(ex.Message); }
return(result);
}