private static string GetEncryptedString(byte[] OriginalKeyInByteArr, byte[] IVBytes, string PlainText)
{
byte[] encrypted;
AesCryptoServiceProvider myAes = new AesCryptoServiceProvider();
myAes.Key = OriginalKeyInByteArr;
myAes.IV = IVBytes;
AesCryptoServiceProvider aesAlg = new AesCryptoServiceProvider();
ICryptoTransform encryptor = aesAlg.CreateEncryptor(myAes.Key, myAes.IV);
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(PlainText);
}
encrypted = msEncrypt.ToArray();
}
}
var encryptedInBase64 = Convert.ToBase64String(encrypted);
var encryptedInHex = GetHexStringFromBytes(encrypted);
return encryptedInHex;
}
void Button1Click(object sender, EventArgs e)
{
//if (save_encrypt.ShowDialog() == DialogResult.OK)
//{
FileStream encrypt_file = File.Create(openfile.FileName+"_encrypt");
AesCryptoServiceProvider AES_ALGORITHM = new AesCryptoServiceProvider();
CryptoStream csEncrypt = new CryptoStream(encrypt_file, AES_ALGORITHM.CreateEncryptor(),CryptoStreamMode.Write);
StreamWriter swEncStream = new StreamWriter(csEncrypt);
StreamReader srFile = new StreamReader(textBox1.Text);
string currLine = srFile.ReadLine();
while(currLine != null)
{
swEncStream.WriteLine(currLine);
currLine = srFile.ReadLine();
}
srFile.Close();
swEncStream.Flush();
swEncStream.Close();
FileStream keyfile = File.Create(openfile.FileName+".key");
BinaryWriter binFile = new BinaryWriter(keyfile);
key = AES_ALGORITHM.Key;
iv = AES_ALGORITHM.IV;
binFile.Write(AES_ALGORITHM.Key);
binFile.Write(AES_ALGORITHM.IV);
binFile.Flush();
binFile.Close();
//}
}
private static byte[] AliceSendData(string msg)
{
Console.WriteLine(string.Format("Alice Send Msg: {0}", msg));
byte[] rawdata = Encoding.UTF8.GetBytes(msg);
byte[] encryptedData = null;
using (var aliceAlgorithm = new ECDiffieHellmanCng(aliceKey))
using (CngKey bobPubKey = CngKey.Import(bobPubKeyBlob, CngKeyBlobFormat.EccPublicBlob))
{
byte[] symmkey = aliceAlgorithm.DeriveKeyMaterial(bobPubKey);
Console.WriteLine(string.Format("Alice Create this symmtric key with {0}", Convert.ToBase64String(symmkey)));
var aes = new AesCryptoServiceProvider();
aes.Key = symmkey;
aes.GenerateIV();
using (ICryptoTransform encryptor = aes.CreateEncryptor())
using (MemoryStream ms = new MemoryStream())
{
var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
ms.Write(aes.IV, 0, aes.IV.Length);
cs.Write(rawdata, 0, rawdata.Length);
cs.Close();
encryptedData = ms.ToArray();
}
aes.Clear();
}
Console.WriteLine(Convert.ToBase64String(encryptedData));
return encryptedData;
}
public static byte[] Encrypt(byte[] data, string privateKey)
{
// We hash the private key string to ensure we have a key with the correct
// number of bytes.
var privateKeyHash = HashKey(privateKey);
using (var provider = new AesCryptoServiceProvider())
{
provider.Key = privateKeyHash;
provider.Mode = CipherMode.CBC;
provider.Padding = PaddingMode.PKCS7;
using (var ms = new MemoryStream())
{
ms.Write(provider.IV, 0, 16);
using (var encryptor = provider.CreateEncryptor())
{
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
cs.FlushFinalBlock();
}
return ms.ToArray();
}
}
}
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="data">待加密数据</param>
/// <param name="key">密钥</param>
/// <returns>密文字节数组</returns>
public static byte[] AesEncrypt(string data, byte[] key)
{
byte[] result;
using (SymmetricAlgorithm algorithm = new AesCryptoServiceProvider())
{
algorithm.Mode = CipherMode.ECB;
algorithm.Padding = PaddingMode.PKCS7;
using (ICryptoTransform transform = algorithm.CreateEncryptor(key, key))
{
using (MemoryStream ms = new MemoryStream())
{
using (Stream cs = new CryptoStream(ms, transform, CryptoStreamMode.Write))
{
using (StreamWriter writer = new StreamWriter(cs))
{
writer.Write(data);
}
result = ms.ToArray();
}
}
}
}
return result;
}
string CreateEncryptedSensitiveVariablesFile(string fileName, string encryptionPassword, Dictionary<string, string> variables)
{
using (var algorithm = new AesCryptoServiceProvider
{
Key = Calamari.Deployment.SensitiveVariables.GetEncryptionKey(encryptionPassword)
})
using (var encryptor = algorithm.CreateEncryptor())
using (var encryptedTextStream = new MemoryStream())
using (var jsonStream = new MemoryStream())
using (var streamWriter = new StreamWriter(jsonStream, Encoding.UTF8))
using (var jsonWriter = new JsonTextWriter(streamWriter))
{
using (var cryptoStream = new CryptoStream(encryptedTextStream, encryptor, CryptoStreamMode.Write))
{
var serializer = new JsonSerializer();
serializer.Serialize(jsonWriter, variables);
jsonWriter.Flush();
streamWriter.Flush();
var jsonBytes = jsonStream.ToArray();
cryptoStream.Write(jsonBytes, 0, jsonBytes.Length);
}
var encryptedBytes = encryptedTextStream.ToArray();
fileSystem.OverwriteFile(fileName, Convert.ToBase64String(encryptedBytes));
return Convert.ToBase64String(algorithm.IV);
}
}
/// <summary>
/// AES Encryption
/// </summary>
public static string Encrypt(string clearText)
{
if (clearText == null) return null;
// AesCryptoServiceProvider
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 128;
aes.GenerateIV();
aes.Key = Encoding.UTF8.GetBytes(AesKey);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
// Convert string to byte array
byte[] src = Encoding.Unicode.GetBytes(clearText);
// encryption
using (ICryptoTransform encrypt = aes.CreateEncryptor())
{
byte[] dest = encrypt.TransformFinalBlock(src, 0, src.Length);
// Convert byte array to Base64 strings
return Convert.ToBase64String(aes.IV) + Convert.ToBase64String(dest);
}
}
public static string Encrypt(long id)
{
byte[] encrypted;
using (var aesAlg = new AesCryptoServiceProvider())
{
aesAlg.Key = AesCryptoServiceProvider.Key;
aesAlg.IV = AesCryptoServiceProvider.IV;
var encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
using (var msEncrypt = new MemoryStream())
{
using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (var swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(id);
}
encrypted = msEncrypt.ToArray();
}
}
}
return Convert.ToBase64String(encrypted);
}
protected override string EncryptByBlocks(byte[] key,
List<byte> plainText)
{
var cipherText = new StringBuilder();
if (plainText.Count % BlockSize == 0)
{
AddDummyBlock(plainText);
}
using (var aes = new AesCryptoServiceProvider())
{
aes.BlockSize = BlockSize * 8;
aes.KeySize = KeySize * 8;
aes.Padding = PaddingMode.None;
aes.Key = key;
aes.GenerateIV();
cipherText.Append(BytesToHexString(aes.IV));
using (var encr = aes.CreateEncryptor())
{
while (plainText.Count != 0)
{
var block = DetachBlock(plainText);
if (block.Length < BlockSize)
{
block = CompleteBlock(block);
}
var encrypted = new byte[BlockSize];
encr.TransformBlock(block, 0, BlockSize, encrypted, 0);
cipherText.Append(BytesToHexString(encrypted));
aes.IV = encrypted;
}
}
}
return cipherText.ToString();
}
public byte[] Encription(string message, byte[] bobPubKeyBlob)
{
byte[] rawData = Encoding.UTF8.GetBytes(message);
byte[] encryptedData = null;
using (var aliceAlgorithm = new ECDiffieHellmanCng(privKey))
using (CngKey bobPubKey = CngKey.Import(bobPubKeyBlob,
CngKeyBlobFormat.EccPublicBlob))
{
byte[] symmKey = aliceAlgorithm.DeriveKeyMaterial(bobPubKey);
using (var aes = new AesCryptoServiceProvider())
{
aes.Key = symmKey;
aes.GenerateIV();
using (ICryptoTransform encryptor = aes.CreateEncryptor())
using (MemoryStream ms = new MemoryStream())
{
// create CryptoStream and encrypt data to send
var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
// write initialization vector not encrypted
ms.Write(aes.IV, 0, aes.IV.Length);
cs.Write(rawData, 0, rawData.Length);
cs.Close();
encryptedData = ms.ToArray();
}
aes.Clear();
}
}
return encryptedData;
}
/// <summary>
/// Encryptes a string using 3DES
/// </summary>
/// <param name="data">The data to encrypt</param>
/// <param name="key">The key to use</param>
/// <param name="IV">Initialization Vector</param>
/// <returns>An encrypted, base64 encoded string</returns>
public static byte[] EncryptAES(string data, byte[] key, byte[] IV)
{
string retVal = string.Empty;
var tsp = new System.Security.Cryptography.AesCryptoServiceProvider();
// default padding and mode
tsp.Mode = CipherMode.CBC;
tsp.Padding = PaddingMode.PKCS7;
// get a crypt transform interface
ICryptoTransform ct = tsp.CreateEncryptor(key, IV);
// setup a memory stream
MemoryStream ms = new MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, ct, CryptoStreamMode.Write))
{
// write the string through the crypto stream
byte[] db = System.Text.Encoding.ASCII.GetBytes(data);
cs.Write(db, 0, db.Length);
// flush
cs.FlushFinalBlock();
// convert the data in the memory stream to base64 text
ms.Seek(0, SeekOrigin.Begin);
var edata = ms.ToArray();
return edata;
}
}
/// <summary>
/// Encrypts a plainText string using the system key retrieved from the Web Service
/// </summary>
/// <param name="plainText">String to encrypt</param>
/// <returns>EncryptedData with encrypted string and IV used</returns>
public EncryptedData Encrypt(string plainText)
{
lock (_locker)
{
using (var crypto = new AesCryptoServiceProvider())
{
try
{
UnprotectKey();
// Create the streams used for encryption.
using (MemoryStream msEncrypt = new MemoryStream())
using (var encryptor = crypto.CreateEncryptor(_key, crypto.IV))
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
return new EncryptedData(msEncrypt.ToArray(), crypto.IV);
}
}
finally
{
ProtectKey();
}
}
}
}
/// <summary>
/// uses the AES FIPS-140 compliant algorithm to encrypt a string
/// </summary>
/// <param name="plainText">the text to encrypt</param>
/// <param name="passPhrase">the pass phase to do the encryption</param>
/// <param name="salt">a salt value to ensure ciphertext using the same text/password is different</param>
/// <param name="iterations">number of iterations to derive the key (higher is slower but more secure) - optional parameter with a default of 1000</param>
/// <returns></returns>
public static String EncryptAES(String plainText, String passPhrase, String salt, int iterations = 1000)
{
VerifyAesSettings(passPhrase, salt);
byte[] saltBytes = Encoding.ASCII.GetBytes(salt);
var aesProvider = new AesCryptoServiceProvider();
var derivedBytes = new Rfc2898DeriveBytes(passPhrase, saltBytes, iterations);
Byte[] derivedKey = derivedBytes.GetBytes(32); // 256 bits
Byte[] derivedInitVector = derivedBytes.GetBytes(16); // 128 bits
Byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
aesProvider.KeySize = 256;
aesProvider.Padding = PaddingMode.ISO10126;
aesProvider.Mode = CipherMode.CBC;
ICryptoTransform encryptor = aesProvider.CreateEncryptor(derivedKey, derivedInitVector);
var memStream = new MemoryStream();
var cryptoStream = new CryptoStream(memStream, encryptor, CryptoStreamMode.Write);
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
Byte[] cipherTextBytes = memStream.ToArray();
memStream.Close();
cryptoStream.Close();
return Convert.ToBase64String(cipherTextBytes);
}
public void SetUp()
{
using ( AesCryptoServiceProvider aesAlg = new AesCryptoServiceProvider() ) {
m_Encryptor = aesAlg.CreateEncryptor();
m_Decryptor = aesAlg.CreateDecryptor();
}
}
public void Encrypt(string filename)
{
FileStream fsInput = new FileStream(filename, FileMode.Open, FileAccess.Read);
FileStream fsOutput = new FileStream(filename + ".crypt", FileMode.Create, FileAccess.Write);
AesCryptoServiceProvider Aes = new AesCryptoServiceProvider();
Aes.KeySize = 128;
Aes.GenerateIV();
Aes.GenerateKey();
byte[] output = _algorithm_asym.Encrypt(Aes.Key, false);
fsOutput.Write(output, 0, 256);
output = _algorithm_asym.Encrypt(Aes.IV, false);
fsOutput.Write(output, 0, 256);
ICryptoTransform encrypt = Aes.CreateEncryptor();
CryptoStream cryptostream = new CryptoStream(fsOutput, encrypt, CryptoStreamMode.Write);
byte[] bytearrayinput = new byte[fsInput.Length - 1];
fsInput.Read(bytearrayinput, 0, bytearrayinput.Length);
cryptostream.Write(bytearrayinput, 0, bytearrayinput.Length);
fsInput.Close();
fsOutput.Close();
}
/// <summary>
/// AES encryption
/// </summary>
public string Encrypt(string text)
{
// AES cryptographic service provider
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 128;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
aes.IV = Encoding.UTF8.GetBytes(AesIV);
aes.Key = Encoding.UTF8.GetBytes(AesKey);
// String → byte
byte[] src = Encoding.Unicode.GetBytes(text);
//encryption
using (ICryptoTransform encrypt = aes.CreateEncryptor())
{
byte[] dest = encrypt.TransformFinalBlock(src, 0, src.Length);
// byte→Base64
return Convert.ToBase64String(dest);
}
}
public static byte[] Encrypt(byte[] input, byte[] key)
{
if (key == null || key.Length == 0) throw new Exception("Key can not be empty.");
using (var md5 = new MD5CryptoServiceProvider())
{
key = md5.ComputeHash(key);
}
byte[] data = input, encdata = new byte[0];
try
{
using (var ms = new MemoryStream())
{
using (var aesProvider = new AesCryptoServiceProvider() { Key = key })
{
aesProvider.GenerateIV();
using (var cs = new CryptoStream(ms, aesProvider.CreateEncryptor(), CryptoStreamMode.Write))
{
ms.Write(aesProvider.IV, 0, aesProvider.IV.Length); // write first 16 bytes IV, followed by encrypted message
cs.Write(data, 0, data.Length);
}
}
encdata = ms.ToArray();
}
}
catch
{
}
return encdata;
}
public static byte[] EncryptString(byte[] toEncrypt, byte[] encryptionKey)
{
if (encryptionKey == null || encryptionKey.Length == 0) throw new ArgumentException("encryptionKey");
using (var provider = new AesCryptoServiceProvider())
{
provider.Key = encryptionKey;
provider.Mode = CipherMode.CBC;
provider.Padding = PaddingMode.PKCS7;
using (var encryptor = provider.CreateEncryptor(provider.Key, provider.IV))
{
using (var ms = new MemoryStream())
{
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(toEncrypt, 0, toEncrypt.Length);
cs.FlushFinalBlock();
var retVal = new byte[16 + ms.Length];
provider.IV.CopyTo(retVal, 0);
ms.ToArray().CopyTo(retVal, 16);
return retVal;
}
}
}
}
}
public static void EncryptAndUpload(string file, string awsPath, string key)
{
if (bool.Parse(ConfigurationManager.AppSettings["ManagedEncryption"]))
{
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(key, appKey);
using (var aes = new AesCryptoServiceProvider())
{
aes.Key = deriveBytes.GetBytes(aes.KeySize / 8);
aes.IV = deriveBytes.GetBytes(aes.BlockSize / 8);
using (var temp = new FileStream(file + "_encrypted", FileMode.Create))
{
using (var stream = new CryptoStream(new FileStream(file, FileMode.Open), aes.CreateEncryptor(), CryptoStreamMode.Read))
{
stream.CopyTo(temp);
}
}
UploadFile(file + "_encrypted", awsPath);
File.Delete(file + "_encrypted");
}
}
else
UploadFile(file, awsPath);
}
public static byte[] Protect(byte[] encryptionKey, byte[] validationKey, byte[] initializationVector, byte[] plainText)
{
using (var provider = new AesCryptoServiceProvider())
{
using (ICryptoTransform transform = provider.CreateEncryptor(encryptionKey, initializationVector))
{
using (var ms = new MemoryStream())
{
ms.Write(initializationVector, 0, initializationVector.Length);
using (var cryptoStream = new CryptoStream(ms, transform, CryptoStreamMode.Write))
{
// Encrypted payload
cryptoStream.Write(plainText, 0, plainText.Length);
cryptoStream.FlushFinalBlock();
// Compute signature
using (var sha = new HMACSHA256(validationKey))
{
checked
{
byte[] signature = sha.ComputeHash(ms.GetBuffer(), 0, (int)ms.Length);
// Write the signature to the paylod
ms.Write(signature, 0, signature.Length);
// Final bytes
return ms.ToArray();
}
}
}
}
}
}
}
public static string AESEncryptor(string plainText, byte[] Key, byte[] IV)
{
byte[] data = ASCIIEncoding.ASCII.GetBytes(plainText);
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
string encryptedString = Convert.ToBase64String(aes.CreateEncryptor(Key, IV).TransformFinalBlock(data, 0, data.Length));
return encryptedString;
}
public ICryptoTransform CreateEncryptor(byte[] key, byte[] iv)
{
using (var provider = new AesCryptoServiceProvider {Padding = _paddingMode})
{
return provider.CreateEncryptor(key, iv);
}
}
public static byte[] EncryptString(string toEncrypt, byte[] encryptionKey)
{
if (string.IsNullOrEmpty(toEncrypt)) throw new ArgumentException("toEncrypt");
if (encryptionKey == null || encryptionKey.Length == 0) throw new ArgumentException("encryptionKey");
var toEncryptBytes = Encoding.UTF8.GetBytes(toEncrypt);
using (var provider = new AesCryptoServiceProvider())
{
provider.Key = encryptionKey;
provider.Mode = CipherMode.CBC;
provider.Padding = PaddingMode.PKCS7;
using (var encryptor = provider.CreateEncryptor(provider.Key, provider.IV))
{
using (var ms = new MemoryStream())
{
ms.Write(provider.IV, 0, 16);
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(toEncryptBytes, 0, toEncryptBytes.Length);
cs.FlushFinalBlock();
}
return ms.ToArray();
}
}
}
}
public static string Request(string requestParams, string devKey, string devIV, string devID) {
// Create an unencrypted request as an array of bytes
byte[] request = UTF8Encoding.UTF8.GetBytes(requestParams);
byte[] key = UTF8Encoding.UTF8.GetBytes(devKey);
byte[] iv = UTF8Encoding.UTF8.GetBytes(devIV);
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.Key = key;
aes.IV = iv;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.Zeros;
// Get the transformer from the AES Encryptor
ICryptoTransform cTransform = aes.CreateEncryptor();
// Use the transformer to encrypt our request
byte[] result = cTransform.TransformFinalBlock(request, 0, request.Length);
aes.Clear();
// Encode to base64
string encryptedRequest = Convert.ToBase64String(result, 0, result.Length);
// Send request to API
string requestUri = "http://api.blackoutrugby.com/?d=" + devID + "&er=" + encryptedRequest;
string xmlResponse = getWebResponse(requestUri);
return XmlToJson(xmlResponse);
}
public static string encriptar(string texto, string key)
{
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
MD5 md5Hash = MD5.Create();
string chave = GetMd5Hash(md5Hash, key);
aes.Key = System.Text.Encoding.UTF8.GetBytes(chave);
aes.BlockSize = 128;
aes.IV = System.Text.Encoding.UTF8.GetBytes("6abraswa+hep&#Ac");
ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
byte[] encrypted;
// Create the streams used for encryption.
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(texto);
}
encrypted = msEncrypt.ToArray();
}
}
return Convert.ToBase64String(encrypted);
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <returns></returns>
public static byte[] AesEncrypt(string data, byte[] key)
{
if (key.Length != 16)
{
var ex = new Exception("the length of AES ecrypted key must be 16bit.");
throw ex;
}
byte[] result;
using (SymmetricAlgorithm algorithm = new AesCryptoServiceProvider())
{
algorithm.Mode = CipherMode.ECB;
algorithm.Padding = PaddingMode.PKCS7;
using (ICryptoTransform transform = algorithm.CreateEncryptor(key, key))
{
using (MemoryStream ms = new MemoryStream())
{
using (Stream cs = new CryptoStream(ms, transform, CryptoStreamMode.Write))
{
using (StreamWriter writer = new StreamWriter(cs))
{
writer.Write(data);
}
result = ms.ToArray();
}
}
}
}
return result;
}
public static string EncryptString(string message, string passphrase = null)
{
if (string.IsNullOrEmpty(message))
{
throw new ArgumentException("message is empty!", message);
}
if (string.IsNullOrEmpty(passphrase))
{
passphrase = ConfigurationManager.AppSettings.Get("Common.Cryptography.DefaultPassPhrase");
}
// First hash the passphrase to get a 256bit key
var sha = new SHA256CryptoServiceProvider();
var passphraseHash = sha.ComputeHash(Encoding.UTF8.GetBytes(passphrase));
var aes = new AesCryptoServiceProvider { KeySize = 256, Key = passphraseHash };
var memoryStream = new MemoryStream();
var cryptoStream = new CryptoStream(memoryStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
using (var writer = new StreamWriter(cryptoStream, Encoding.UTF8))
{
writer.Write(message);
}
var results = memoryStream.ToArray();
var finalArray = new byte[aes.IV.Length + results.Length];
Array.Copy(aes.IV, 0, finalArray, 0, aes.IV.Length);
Array.Copy(results, 0, finalArray, aes.IV.Length, results.Length);
return HttpServerUtility.UrlTokenEncode(finalArray);
}
/// <summary>
/// Encrypt a message using AES in CBC (cipher-block chaining) mode.
/// </summary>
/// <param name="plaintext">The message (plaintext) to encrypt</param>
/// <param name="key">An AES key</param>
/// <param name="iv">The IV to use or null to use a 0 IV</param>
/// <param name="addHmac">When set, a SHA256-based HMAC (HMAC256) of 32 bytes using the same key is added to the plaintext
/// before it is encrypted.</param>
/// <returns>The ciphertext derived by encrypting the orignal message using AES in CBC mode</returns>
public static byte[] EncryptAesCbc(byte[] plaintext, byte[] key, byte[] iv = null, bool addHmac = false)
{
using (AesCryptoServiceProvider aes = new AesCryptoServiceProvider())
{
aes.Key = key;
if (iv == null)
iv = NullIv;
aes.Mode = CipherMode.CBC;
aes.IV = iv;
// Encrypt the message with the key using CBC and InitializationVector=0
byte[] cipherText;
using (System.IO.MemoryStream ciphertext = new System.IO.MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ciphertext, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(plaintext, 0, plaintext.Length);
if (addHmac)
{
byte[] hmac = new HMACSHA256(key).ComputeHash(plaintext);
cs.Write(hmac, 0, hmac.Length);
}
cs.Flush();
}
cipherText = ciphertext.ToArray();
}
return cipherText;
}
}
private async static Task<byte[]> AliceSendsData(string message)
{
Console.WriteLine("Alice send message {0}", message);
byte[] rawData = Encoding.UTF8.GetBytes(message);
byte[] encryptedData = null;
using(var aliceAlgo = new ECDiffieHellmanCng(aliceKey))
{
using(CngKey bobPubKey = CngKey.Import(bobPubKeyBlob, CngKeyBlobFormat.GenericPublicBlob))
{
byte[] symmKey = aliceAlgo.DeriveKeyMaterial(bobPubKey);
Console.WriteLine("Alice create this symm key with Bobs public key information : {0}", Convert.ToBase64String(symmKey));
using(var aes = new AesCryptoServiceProvider())
{
aes.Key = symmKey;
aes.GenerateIV();
using(ICryptoTransform encryptor = aes.CreateEncryptor())
{
using(MemoryStream ms = new MemoryStream())
{
var cs = new CryptoStream(ms, encryptor,CryptoStreamMode.Write);
await ms.WriteAsync(aes.IV, 0, aes.IV.Length);
cs.Write(rawData, 0, rawData.Length);
cs.Close();
encryptedData = ms.ToArray();
}
}
aes.Clear();
}
}
}
Console.WriteLine("Alice message is encrypted : {0}", Convert.ToBase64String(encryptedData));
return encryptedData;
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="str">待加密字符串</param>
/// <returns>加密后字符串</returns>
public static string AesEncrypt(string str)
{
try
{
string key = AES_KEY;
//分组加密算法
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
byte[] inputByteArray = Encoding.UTF8.GetBytes(str);//得到需要加密的字节数组
//设置密钥及密钥向量
aes.Key = Encoding.UTF8.GetBytes(key);
//aes.IV = Encoding.UTF8.GetBytes(key);
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
byte[] cipherBytes = null;
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cipherBytes = ms.ToArray();//得到加密后的字节数组
cs.Close();
ms.Close();
}
}
return Convert.ToBase64String(cipherBytes);
}
catch { }
return str;
}
byte[] Transform(byte[] dataBytes, byte[] passwordBytes, bool encrypt)
{
/// <summary>Encrypt by using AES-256 algorithm.</summary>
// Create an instance of the AES class.
var cipher = new System.Security.Cryptography.AesCryptoServiceProvider();
// Calculate salt to make it harder to guess key by using a dictionary attack.
var hmac = new System.Security.Cryptography.HMACSHA1(passwordBytes);
var salt = hmac.ComputeHash(passwordBytes);
// Generate Secret Key from the password and salt.
// Note: Set number of iterations to 10 in order for JavaScript example to work faster.
var secretKey = new System.Security.Cryptography.Rfc2898DeriveBytes(passwordBytes, salt, 10);
// Create a encryptor from the existing SecretKey bytes by using
// 32 bytes (256 bits) for the secret key and
// 16 bytes (128 bits) for the initialization vector (IV).
var key = secretKey.GetBytes(32);
var iv = secretKey.GetBytes(16);
// Get cryptor as System.Security.Cryptography.ICryptoTransform class.
var cryptor = encrypt
? cipher.CreateEncryptor(key, iv)
: cipher.CreateDecryptor(key, iv);
// Create new Input.
var inputBuffer = new byte[dataBytes.Length];
// Copy data bytes to input buffer.
System.Buffer.BlockCopy(dataBytes, 0, inputBuffer, 0, inputBuffer.Length);
// Create a MemoryStream to hold the output bytes.
var stream = new System.IO.MemoryStream();
// Create a CryptoStream through which we are going to be processing our data.
var mode = System.Security.Cryptography.CryptoStreamMode.Write;
var cryptoStream = new System.Security.Cryptography.CryptoStream(stream, cryptor, mode);
// Start the crypting process.
cryptoStream.Write(inputBuffer, 0, inputBuffer.Length);
// Finish crypting.
cryptoStream.FlushFinalBlock();
// Convert data from a memoryStream into a byte array.
var outputBuffer = stream.ToArray();
// Close both streams.
stream.Close();
cryptoStream.Close();
return(outputBuffer);
}
/// <summary>
/// 加密
/// </summary>
/// <param name="plainBytes">明文字节数组</param>
/// <returns>返回密文字节数组</returns>
public byte[] Encrypt(byte[] plainBytes)
{
var aes = new System.Security.Cryptography.AesCryptoServiceProvider();
aes.Mode = this.CipherMode;
aes.Padding = this.PaddingMode;
aes.Key = GetKeyBytes();
if (aes.Mode == CipherMode.CBC && IV == null)
{
IV = initIV(keyBytes.Length);
}
if (IV != null)
{
aes.IV = IV;
}
var encryptor = aes.CreateEncryptor();
var bResult = encryptor.TransformFinalBlock(plainBytes, 0, plainBytes.Length);
return(bResult);
}
static public string AesLoginDynamicKey = @"d_&^t"; // 5
/// <summary>
/// 문자열을 AES로 암호화 한다
/// </summary>
public static string Encrypt(string dynamincKey, string text)
{
var comleteAesKey = dynamincKey.Substring(0, 5) + AesKey;
System.Security.Cryptography.AesCryptoServiceProvider aes = new System.Security.Cryptography.AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 128;
aes.IV = Encoding.UTF8.GetBytes(AesIV);
aes.Key = Encoding.UTF8.GetBytes(comleteAesKey);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
// 문자열을 바이트형 배열로 변환
byte[] src = Encoding.Unicode.GetBytes(text);
// 암호화 한다
using (ICryptoTransform encrypt = aes.CreateEncryptor())
{
byte[] dest = encrypt.TransformFinalBlock(src, 0, src.Length);
// 바이트형 배열에서 Base64형식의 문자열로 변환
return(Convert.ToBase64String(dest));
}
}