static Boolean TestKnownEnc(Aes aes, Byte[] Key, Byte[] IV, Byte[] Plain, Byte[] Cipher)
{
Byte[] CipherCalculated;
Console.WriteLine("Encrypting the following bytes:");
PrintByteArray(Plain);
Console.WriteLine("With the following Key:");
PrintByteArray(Key);
Console.WriteLine("and IV:");
PrintByteArray(IV);
Console.WriteLine("Expecting this ciphertext:");
PrintByteArray(Cipher);
ICryptoTransform sse = aes.CreateEncryptor(Key, IV);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, sse, CryptoStreamMode.Write);
cs.Write(Plain,0,Plain.Length);
cs.FlushFinalBlock();
CipherCalculated = ms.ToArray();
cs.Close();
Console.WriteLine("Computed this cyphertext:");
PrintByteArray(CipherCalculated);
if (!Compare(Cipher, CipherCalculated)) {
Console.WriteLine("ERROR: result is different from the expected");
return false;
}
Console.WriteLine("OK");
return true;
}
public static bool ForCodeCoverage()
{
AesManaged aes = new AesManaged();
using (ICryptoTransform cte = aes.CreateEncryptor(), ctd = aes.CreateDecryptor())
{
byte[] plain1 = new byte[64];
for (int i = 0; i < plain1.Length; i++)
plain1[i] = (byte)i;
byte[] encr1 = cte.TransformFinalBlock(plain1, 0, plain1.Length);
using(MemoryStream ms = new MemoryStream())
using(CryptoStream cs = new CryptoStream(ms, ctd, CryptoStreamMode.Write))
{
cs.Write(encr1, 0, 16);
cs.Write(encr1, 16, 16);
cs.Write(encr1, 32, 16);
cs.Write(encr1, 48, encr1.Length-48);
cs.FlushFinalBlock();
byte[] plain2 = ms.ToArray();
if (!Compare(plain1, plain2))
{
Console.WriteLine("CodeCoverage case failed");
return false;
}
return true;
}
}
}
private static byte[] AES_Decrypt(byte[] bytesToBeDecrypted, byte[] passwordBytes)
{
byte[] decryptedBytes = null;
using (MemoryStream ms = new MemoryStream())
{
using (RijndaelManaged AES = new RijndaelManaged())
{
try
{
AES.KeySize = AESKeySize_256;
AES.Key = passwordBytes;
AES.Mode = AESCipherMode_ECB;
AES.Padding = AESPadding_PKCS7;
using (CryptoStream cs = new CryptoStream(ms, AES.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(bytesToBeDecrypted, 0, bytesToBeDecrypted.Length);
cs.Close();
}
decryptedBytes = ms.ToArray();
}
catch (CryptographicException e)
{
throw e;
}
}
}
return decryptedBytes;
}
public static string Encrypt(string originalString, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
// 把字符串放到byte数组中
byte[] inputByteArray = Encoding.Default.GetBytes(originalString);
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey); //建立加密对象的密钥和偏移量
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey); //原文使用ASCIIEncoding.ASCII方法的
//GetBytes方法
MemoryStream ms = new MemoryStream(); //使得输入密码必须输入英文文本
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
ret.ToString();
return ret.ToString();
}
public static string Decrypt(string originalString, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = new byte[originalString.Length / 2];
for (int x = 0; x < originalString.Length / 2; x++)
{
int i = (Convert.ToInt32(originalString.Substring(x * 2, 2), 16));
inputByteArray[x] = (byte)i;
}
//建立加密对象的密钥和偏移量，此值重要，不能修改
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
//建立StringBuild对象，CreateDecrypt使用的是流对象，必须把解密后的文本变成流对象
StringBuilder ret = new StringBuilder();
return System.Text.Encoding.Default.GetString(ms.ToArray());
}
public static string Encrypt(string plainText, string passPhrase)
{
byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
using (PasswordDeriveBytes password = new PasswordDeriveBytes(passPhrase, null))
{
byte[] keyBytes = password.GetBytes(keysize / 8);
using (RijndaelManaged symmetricKey = new RijndaelManaged())
{
symmetricKey.Mode = CipherMode.CBC;
using (ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes))
{
using (MemoryStream memoryStream = new MemoryStream())
{
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
byte[] cipherTextBytes = memoryStream.ToArray();
return Convert.ToBase64String(cipherTextBytes);
}
}
}
}
}
}
public static string Decrypt(string stringToDecrypt)
{
string sEncryptionKey = "thuynnxkey";
byte[] key = { };
byte[] IV = { 10, 20, 30, 40, 50, 60, 70, 80 };
byte[] inputByteArray = new byte[stringToDecrypt.Length];
try
{
key = Encoding.UTF8.GetBytes(sEncryptionKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(stringToDecrypt);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(key, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
Encoding encoding = Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch (System.Exception ex)
{
SiAuto.Main.LogString("Lỗi :", ex.ToString());
return (string.Empty);
}
}
public static string Decrypt(string inName, string password)
{
PasswordDeriveBytes pdb = new PasswordDeriveBytes(password, keySalt);
Rijndael alg = Rijndael.Create();
alg.Key = pdb.GetBytes(32);
alg.IV = pdb.GetBytes(16);
using (var fin = new FileStream(inName, FileMode.Open, FileAccess.Read))
using (var fout = new MemoryStream())
using (var cs = new CryptoStream(fout, alg.CreateDecryptor(), CryptoStreamMode.Write))
{
byte[] buffer = new byte[4096];
int bytesRead;
do
{
bytesRead = fin.Read(buffer, 0, buffer.Length);
cs.Write(buffer, 0, bytesRead);
}
while (bytesRead != 0);
cs.FlushFinalBlock();
return Encoding.ASCII.GetString(fout.ToArray());
}
}
public static byte[] Encrypt(byte[] data, string password)
{
byte[] result = null;
byte[] passwordBytes = Encoding.Default.GetBytes(password);
using (MemoryStream ms = new MemoryStream())
{
using (RijndaelManaged AES = new RijndaelManaged())
{
AES.KeySize = keySize;
AES.BlockSize = 128;
var key = new Rfc2898DeriveBytes(passwordBytes, salt, 1000);
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
AES.Mode = CipherMode.CBC;
using (var cs = new CryptoStream(ms, AES.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
cs.Close();
}
result = ms.ToArray();
}
}
return result;
}
public static byte[] AES_Encrypt(byte[] bytesToBeEncrypted, byte[] passwordBytes)
{
byte[] encryptedBytes = null;
// Set your salt here, change it to meet your flavor:
// The salt bytes must be at least 8 bytes.
byte[] saltBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
using (MemoryStream ms = new MemoryStream())
{
using (RijndaelManaged AES = new RijndaelManaged())
{
AES.KeySize = 256;
AES.BlockSize = 128;
var key = new Rfc2898DeriveBytes(passwordBytes, saltBytes, 1000);
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
AES.Mode = CipherMode.CBC;
using (var cs = new CryptoStream(ms, AES.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(bytesToBeEncrypted, 0, bytesToBeEncrypted.Length);
cs.Close();
}
encryptedBytes = ms.ToArray();
}
}
return encryptedBytes;
//end public byte[] AES_Encrypt
}
public static string DecryptString(string input, string cryptographicProvider_PublicKey, string cryptographicProvider_IV)
{
try
{
input = input.Replace(CryptographicProviderKey, String.Empty);
using (var dataString = new MemoryStream())
{
var service = new TripleDESCryptoServiceProvider().CreateDecryptor(Encoding.UTF8.GetBytes(cryptographicProvider_PublicKey),
Encoding.UTF8.GetBytes(cryptographicProvider_IV));
using (var cryptoStream = new CryptoStream(dataString, service, CryptoStreamMode.Write))
{
var inputData = Convert.FromBase64String(input);
cryptoStream.Write(inputData, 0, inputData.Length);
cryptoStream.FlushFinalBlock();
var dataResult = dataString.ToArray();
var resultString = Encoding.UTF8.GetString(Convert.FromBase64String(Convert.ToBase64String(dataResult)));
cryptoStream.Close();
return resultString;
}
}
}
catch (Exception e)
{
return e.ToString();
}
}
//This method is to decrypt the password given by user.
public static string Decrypt(string data, string password)
{
if (String.IsNullOrEmpty(data))
throw new ArgumentException("No data given");
if (String.IsNullOrEmpty(password))
throw new ArgumentException("No password given");
byte[] rawData = Convert.FromBase64String(data.Replace(" ", "+"));
if (rawData.Length < 8)
throw new ArgumentException("Invalid input data");
// setup the decryption algorithm
byte[] salt = new byte[8];
for (int i = 0; i < salt.Length; i++)
salt[i] = rawData[i];
Rfc2898DeriveBytes keyGenerator = new Rfc2898DeriveBytes(password, salt);
TripleDES tdes = TripleDES.Create();
//Rijndael aes = Rijndael.Create();
tdes.IV = keyGenerator.GetBytes(tdes.BlockSize / 8);
tdes.Key = keyGenerator.GetBytes(tdes.KeySize / 8);
// decrypt the data
using (MemoryStream memoryStream = new MemoryStream())
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, tdes.CreateDecryptor(), CryptoStreamMode.Write))
{
cryptoStream.Write(rawData, 8, rawData.Length - 8);
cryptoStream.Close();
byte[] decrypted = memoryStream.ToArray();
return Encoding.Unicode.GetString(decrypted);
}
}
/// <summary>
/// Encrypt some text and return an encrypted byte array.
/// </summary>
/// <param name="TextValue">The Text to encrypt</param>
/// <returns>byte[] of the encrypted value</returns>
public byte[] Encrypt(string TextValue)
{
//Translates our text value into a byte array.
Byte[] bytes = UTFEncoder.GetBytes(TextValue);
//Used to stream the data in and out of the CryptoStream.
MemoryStream memoryStream = new MemoryStream();
/*
* We will have to write the unencrypted bytes to the
* stream, then read the encrypted result back from the
* stream.
*/
#region Write the decrypted value to the encryption stream
CryptoStream cs = new CryptoStream(memoryStream,
EncryptorTransform, CryptoStreamMode.Write);
cs.Write(bytes, 0, bytes.Length);
cs.FlushFinalBlock();
#endregion
#region Read encrypted value back out of the stream
memoryStream.Position = 0;
byte[] encrypted = new byte[memoryStream.Length];
memoryStream.Read(encrypted, 0, encrypted.Length);
#endregion
//Clean up.
cs.Close();
memoryStream.Close();
return encrypted;
}
private string DeCryption(string content, string sKey, string sIV)
{
try
{
byte[] inputByteArray = Convert.FromBase64String(content);
using (DESCryptoServiceProvider desProvider = new DESCryptoServiceProvider())
{
//byte[] inputByteArray = Convert.FromBase64String(content);
desProvider.Key = System.Text.Encoding.ASCII.GetBytes(sKey);
desProvider.IV = System.Text.Encoding.ASCII.GetBytes(sIV);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms,desProvider.CreateDecryptor(), CryptoStreamMode.Write))
{
//cs.Clear();
cs.Write(inputByteArray,0,inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = System.Text.Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
return str;
}
}
catch
{
return "String Not Base64 Encode!!!";
}
}
// Decrypt a byte array into a byte array using a key and an IV
public static byte[] Decrypt(byte[] cipherData, byte[] Key, byte[] IV)
{
// Create a MemoryStream that is going to accept the decrypted bytes
MemoryStream ms = new MemoryStream();
// Create a symmetric algorithm.
// We are going to use Rijndael because it is strong and available on all platforms.
// You can use other algorithms, to do so substitute the next line with something like
// TripleDES alg = TripleDES.Create();
Rijndael alg = Rijndael.Create();
// Now set the key and the IV.
// We need the IV (Initialization Vector) because the algorithm is operating in its default
// mode called CBC (Cipher Block Chaining). The IV is XORed with the first block (8 byte)
// of the data after it is decrypted, and then each decrypted block is XORed with the previous
// cipher block. This is done to make encryption more secure.
// There is also a mode called ECB which does not need an IV, but it is much less secure.
alg.Key = Key;
alg.IV = IV;
// Create a CryptoStream through which we are going to be pumping our data.
// CryptoStreamMode.Write means that we are going to be writing data to the stream
// and the output will be written in the MemoryStream we have provided.
CryptoStream cs = new CryptoStream(ms, alg.CreateDecryptor(), CryptoStreamMode.Write);
// Write the data and make it do the decryption
cs.Write(cipherData, 0, cipherData.Length);
// Close the crypto stream (or do FlushFinalBlock).
// This will tell it that we have done our decryption and there is no more data coming in,
// and it is now a good time to remove the padding and finalize the decryption process.
cs.Close();
// Now get the decrypted data from the MemoryStream.
// Some people make a mistake of using GetBuffer() here, which is not the right way.
byte[] decryptedData = ms.ToArray();
return decryptedData;
}
public static string Decrypt(this string text, string lKey)
{
try
{
using (Aes aes = new AesManaged())
{
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(Encoding.UTF8.GetString(IVa, 0, IVa.Length), Encoding.UTF8.GetBytes(lKey));
aes.Key = deriveBytes.GetBytes(128 / 8);
aes.IV = aes.Key;
using (MemoryStream decryptionStream = new MemoryStream())
{
using (CryptoStream decrypt = new CryptoStream(decryptionStream, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
byte[] encryptedData = Convert.FromBase64String(text);
decrypt.Write(encryptedData, 0, encryptedData.Length);
decrypt.Flush();
}
byte[] decryptedData = decryptionStream.ToArray();
string decryptedText = Encoding.UTF8.GetString(decryptedData, 0, decryptedData.Length);
return decryptedText;
}
}
}
catch
{
return String.Empty;
}
}
public string Encrypt(string item, string password)
{
if (item == null) {
throw new ArgumentNullException ("item");
}
if (string.IsNullOrEmpty (password)) {
throw new ArgumentNullException ("password");
}
var des = new DESCryptoServiceProvider ();
des.GenerateIV ();
var rfc2898DeriveBytes = new Rfc2898DeriveBytes (password, des.IV, ITERATIONS);
byte[] key = rfc2898DeriveBytes.GetBytes (8);
using (var memoryStream = new MemoryStream()) {
using (var cryptoStream = new CryptoStream(memoryStream, des.CreateEncryptor(key, des.IV), CryptoStreamMode.Write)) {
memoryStream.Write (des.IV, 0, des.IV.Length);
byte[] bytes = Encoding.UTF8.GetBytes (item);
cryptoStream.Write (bytes, 0, bytes.Length);
cryptoStream.FlushFinalBlock ();
return Convert.ToBase64String (memoryStream.ToArray ());
}
}
}
//This method is to encrypt the password given by user.
public static string Encrypt(string data, string password)
{
if (String.IsNullOrEmpty(data))
throw new ArgumentException("No data given");
if (String.IsNullOrEmpty(password))
throw new ArgumentException("No password given");
// setup the encryption algorithm
Rfc2898DeriveBytes keyGenerator = new Rfc2898DeriveBytes(password, 8);
TripleDES tdes = TripleDES.Create();
//Rijndael aes = Rijndael.Create();
tdes.IV = keyGenerator.GetBytes(tdes.BlockSize / 8);
tdes.Key = keyGenerator.GetBytes(tdes.KeySize / 8);
// encrypt the data
byte[] rawData = Encoding.Unicode.GetBytes(data);
using (MemoryStream memoryStream = new MemoryStream())
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, tdes.CreateEncryptor(), CryptoStreamMode.Write))
{
memoryStream.Write(keyGenerator.Salt, 0, keyGenerator.Salt.Length);
cryptoStream.Write(rawData, 0, rawData.Length);
cryptoStream.Close();
byte[] encrypted = memoryStream.ToArray();
return Convert.ToBase64String(encrypted);
}
}
public static string Encrypt(this string text, string lKey)
{
try
{
using (Aes aes = new AesManaged())
{
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(Encoding.UTF8.GetString(IVa, 0, IVa.Length), Encoding.UTF8.GetBytes(lKey));
aes.Key = deriveBytes.GetBytes(128 / 8);
aes.IV = aes.Key;
using (MemoryStream encryptionStream = new MemoryStream())
{
using (CryptoStream encrypt = new CryptoStream(encryptionStream, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
byte[] cleanText = Encoding.UTF8.GetBytes(text);
encrypt.Write(cleanText, 0, cleanText.Length);
encrypt.FlushFinalBlock();
}
byte[] encryptedData = encryptionStream.ToArray();
string encryptedText = Convert.ToBase64String(encryptedData);
return encryptedText;
}
}
}
catch
{
return String.Empty;
}
}
public static Boolean Test() {
String Text = "This is some test text";
Console.WriteLine("Original text : " + Text);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, new ToBase64Transform(), CryptoStreamMode.Write);
cs.Write(Encoding.ASCII.GetBytes(Text), 0, Text.Length);
cs.Close();
Console.WriteLine("Encoded : " + Encoding.ASCII.GetString(ms.ToArray()));
MemoryStream ms1 = new MemoryStream();
CryptoStream cs1 = new CryptoStream(ms1, new FromBase64Transform(), CryptoStreamMode.Write);
cs1.Write(ms.ToArray(), 0, (int)ms.ToArray().Length);
cs1.Close();
Console.WriteLine("Decoded : " + Encoding.ASCII.GetString(ms1.ToArray()));
String mod = Encoding.ASCII.GetString((Byte[])ms.ToArray().Clone());
mod = mod.Insert(17, "\n").Insert(4, " ").Insert(8,"\t");
Byte[] modified = Encoding.ASCII.GetBytes(mod);
MemoryStream ms2 = new MemoryStream();
CryptoStream cs2 = new CryptoStream(ms2, new FromBase64Transform(), CryptoStreamMode.Write);
cs2.Write(modified, 0, (int)modified.Length);
cs2.Close();
Console.WriteLine("Decoded (with whitespaces) : " + Encoding.ASCII.GetString(ms2.ToArray()));
if (!Compare(ms1.ToArray(), ms2.ToArray())) return false;
return true;
}
/// <summary>
/// Encrypt string using AES 128
/// </summary>
/// <param name="plaintext"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string Encrypt(string plaintext, string key)
{
byte[] keybytes = Encoding.UTF8.GetBytes(key);
RijndaelManaged aes = new RijndaelManaged();
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.None;
byte[] IVbytes = Encoding.ASCII.GetBytes("dongbinhuiasxiny");
ICryptoTransform encryptor = aes.CreateEncryptor(keybytes, IVbytes);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
byte[] plainBytes = Encoding.UTF8.GetBytes(Convert.ToBase64String(Encoding.UTF8.GetBytes(plaintext)));
cs.Write(plainBytes, 0, plainBytes.Length);
cs.FlushFinalBlock();
byte[] cipherBytes = ms.ToArray();
ms.Close();
cs.Close();
return Convert.ToBase64String(cipherBytes, 0, cipherBytes.Length);
}
private static void EncryptData(String inName, String outName, byte[] desKey, byte[] desIV)
{
//Create the file streams to handle the input and output files.
FileStream fin = new FileStream(inName, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time.
SymmetricAlgorithm des = new DESCryptoServiceProvider();
des.Padding = PaddingMode.PKCS7;
CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(desKey, desIV), CryptoStreamMode.Write);
Console.WriteLine("Encrypting...");
//Read from the input file, then encrypt and write to the output file.
while(rdlen < totlen)
{
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
Console.WriteLine("{0} bytes processed", rdlen);
}
encStream.Close();
}
//cmThe function used to decrypt the text
private static string Decrypt(string strText, string SaltKey)
{
byte[] byKey = { };
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef };
byte[] inputByteArray = new byte[strText.Length + 1];
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(SaltKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch (Exception ex)
{
return ex.Message;
}
}
public static void Main() {
string PlainText = "Titan";
byte[] PlainBytes = new byte[5];
PlainBytes = Encoding.ASCII.GetBytes(PlainText.ToCharArray());
PrintByteArray(PlainBytes);
byte[] CipherBytes = new byte[8];
PasswordDeriveBytes pdb = new PasswordDeriveBytes("Titan", null);
byte[] IV = new byte[8];
byte[] Key = pdb.CryptDeriveKey("RC2", "SHA1", 40, IV);
PrintByteArray(Key);
PrintByteArray(IV);
// Now use the data to encrypt something
RC2CryptoServiceProvider rc2 = new RC2CryptoServiceProvider();
Console.WriteLine(rc2.Padding);
Console.WriteLine(rc2.Mode);
ICryptoTransform sse = rc2.CreateEncryptor(Key, IV);
MemoryStream ms = new MemoryStream();
CryptoStream cs1 = new CryptoStream(ms, sse, CryptoStreamMode.Write);
cs1.Write(PlainBytes, 0, PlainBytes.Length);
cs1.FlushFinalBlock();
CipherBytes = ms.ToArray();
cs1.Close();
Console.WriteLine(Encoding.ASCII.GetString(CipherBytes));
PrintByteArray(CipherBytes);
ICryptoTransform ssd = rc2.CreateDecryptor(Key, IV);
CryptoStream cs2 = new CryptoStream(new MemoryStream(CipherBytes), ssd, CryptoStreamMode.Read);
byte[] InitialText = new byte[5];
cs2.Read(InitialText, 0, 5);
Console.WriteLine(Encoding.ASCII.GetString(InitialText));
PrintByteArray(InitialText);
}
/// <summary>
/// ถอดรหัสข้อมูล
/// </summary>
/// <param name="Value">ข้อมูลที่ต้องการให้ถอดรหัส</param>
/// <returns>ข้อมูลหลังจากถอดรหัส</returns>
/// <example>
/// clsSecurity.Decrypt("e0NDKIlUhHF3qcIdkmGpZw==");
/// </example>
public string Decrypt(string Value)
{
#region Variable
SymmetricAlgorithm mCSP;
ICryptoTransform ct = null;
MemoryStream ms = null;
CryptoStream cs = null;
byte[] byt;
byte[] result;
#endregion
#region Procedure
mCSP = new RijndaelManaged();
try
{
mCSP.Key = _key;
mCSP.IV = _initVector;
ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);
byt = Convert.FromBase64String(Value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
result = ms.ToArray();
}
catch
{
result = null;
}
finally
{
if (ct != null)
ct.Dispose();
if (ms != null)
if (ms.CanRead)
{
ms.Dispose();
}
if (cs != null)
if (cs.CanRead)
{
cs.Dispose();
}
}
try
{
return ASCIIEncoding.UTF8.GetString(result);
}
catch (Exception)
{
return "";
}
#endregion
}
protected byte[] Transform(byte[] buffer, ICryptoTransform transform)
{
MemoryStream stream = new MemoryStream();
using (CryptoStream cs = new CryptoStream(stream, transform, CryptoStreamMode.Write))
{
cs.Write(buffer, 0, buffer.Length);
}
return stream.ToArray();
}
public byte[] Encrypt(byte[] cipherText)
{
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
cryptoStream.Write(cipherText, 0, (int)cipherText.Length);
cryptoStream.FlushFinalBlock();
memoryStream.Close();
return memoryStream.ToArray();
}
public static byte[] Decrypt(byte[] cipherData, byte[] Key, byte[] IV)
{
MemoryStream ms = new MemoryStream();
Rijndael alg = Rijndael.Create();
alg.Key = Key;
alg.IV = IV;
CryptoStream cs = new CryptoStream(ms, alg.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(cipherData, 0, (int)cipherData.Length);
cs.Close();
return ms.ToArray();
}
public string DecryptionDESEcb(string strText, string strKey)
{
string deFile = System.IO.File.ReadAllText(@"C:\Users\Lukas\Desktop\DesAlgoritmas\EncryptedText.txt");
byte[] bykey = { };
byte[] iv = { 0x01, 0x06, 0x06, 0x02, 0x09, 0x06, 0x02, 0x07 };
byte[] input = new byte[deFile.Length];
try
{
bykey = Encoding.UTF8.GetBytes(strKey);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.Mode = CipherMode.ECB;
input = Convert.FromBase64String(deFile);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(bykey, iv), CryptoStreamMode.Write);
cs.Write(input, 0, input.Length);
cs.FlushFinalBlock();
Encoding en = Encoding.UTF8;
File.WriteAllText(@"C:\Users\Lukas\Desktop\DesAlgoritmas\DecryptedText.txt", en.GetString(ms.ToArray()));
return(en.GetString(ms.ToArray()));
}
catch (Exception ex) { }
return(null);
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="Data">被加密的明文</param>
/// <param name="Key">密钥</param>
/// <param name="Vector">向量</param>
/// <returns>密文</returns>
public static Byte[] AESEncrypt(Byte[] Data, String Key, String Vector)
{
Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
Byte[] bVector = new Byte[16];
Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);
Byte[] Cryptograph = null; // 加密后的密文
Rijndael Aes = Rijndael.Create();
try
{
// 开辟一块内存流
using (MemoryStream Memory = new MemoryStream())
{
// 把内存流对象包装成加密流对象
using (CryptoStream Encryptor = new CryptoStream(Memory,
Aes.CreateEncryptor(bKey, bVector),
CryptoStreamMode.Write))
{
// 明文数据写入加密流
Encryptor.Write(Data, 0, Data.Length);
Encryptor.FlushFinalBlock();
Cryptograph = Memory.ToArray();
}
}
}
catch
{
Cryptograph = null;
}
return(Cryptograph);
}
public static string Encrypt(string plainText, string password, string saltKey, string viKey)
{
byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
byte[] keyBytes = new Rfc2898DeriveBytes(password, Encoding.ASCII.GetBytes(saltKey)).GetBytes(256 / 8);
var symmetricKey = new RijndaelManaged()
{
Mode = CipherMode.CBC, Padding = PaddingMode.Zeros
};
var encryptor = symmetricKey.CreateEncryptor(keyBytes, Encoding.ASCII.GetBytes(viKey));
byte[] cipherTextBytes;
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
cipherTextBytes = memoryStream.ToArray();
cryptoStream.Close();
}
memoryStream.Close();
}
return(Convert.ToBase64String(cipherTextBytes));
}
private string EncryptMessageForMs(string payload, bool sendsResponse = true)
{
using (var aes = Aes.Create())
{
aes.Padding = PaddingMode.None;
aes.Mode = CipherMode.CBC;
using (ICryptoTransform encryptor = aes.CreateEncryptor(_aesKey, _aesIv))
{
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(PrepareEncrypt(payload, encryptor.OutputBlockSize));
}
var msFnc = "fenc";
if (!sendsResponse)
{
msFnc = "enc";
}
return($"jdev/sys/{msFnc}/{WebUtility.UrlEncode(Convert.ToBase64String(memoryStream.ToArray()))}");
}
}
}
}
public static byte[] Transform(ICryptoTransform transform, byte[] buffer)
{
byte[] buffer2 = null;
using (MemoryStream stream = new MemoryStream())
{
CryptoStream stream2 = null;
try
{
stream2 = new CryptoStream(stream, transform, CryptoStreamMode.Write);
stream2.Write(buffer, 0, buffer.Length);
stream2.FlushFinalBlock();
buffer2 = stream.ToArray();
}
finally
{
if (stream2 != null)
{
stream2.Close();
stream2.Dispose();
}
}
}
return(buffer2);
}
/**
* decrypts with AES 128 ECB to bytes
*/
public byte[] DecryptToBytes(string encryptedText)
{
if (string.IsNullOrEmpty(encryptedText))
{
return(null);
}
byte[] encryptedTextAsArray = Convert.FromBase64String(encryptedText);
using (Aes aes = Aes.Create())
{
aes.Key = _encriptionKey;
aes.Mode = CipherMode;
aes.BlockSize = 128;
aes.Padding = Padding;
byte[] IV = new byte[aes.BlockSize / 8];
byte[] cipherText = new byte[encryptedTextAsArray.Length - IV.Length];
Array.Copy(encryptedTextAsArray, IV, IV.Length);
Array.Copy(encryptedTextAsArray, IV.Length, cipherText, 0, cipherText.Length);
aes.IV = IV;
ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(cipherText, 0, cipherText.Length);
cryptoStream.FlushFinalBlock();
return(memoryStream.ToArray());
}
}
}
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string text, string sKey)
{
var des = new DESCryptoServiceProvider();
var len = text.Length / 2;
byte[] inputByteArray = new byte[len];
int x;
for (x = 0; x < len; x++)
{
var i = Convert.ToInt32(text.Substring(x * 2, 2), 16);
inputByteArray[x] = (byte)i;
}
var bKey = Encoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8));
des.Key = bKey;
des.IV = bKey;
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return(Encoding.Default.GetString(ms.ToArray()));
}
/// <summary>
/// Encrypts using AES/CBC/PKCS7 an input byte array with a given key and IV
/// </summary>
public static byte[] AESEncrypt(byte[] input, byte[] key, byte[] iv)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
if (iv == null)
{
throw new ArgumentNullException(nameof(iv));
}
using (var aes = Aes.Create())
{
aes.BlockSize = 128;
aes.KeySize = 128;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
using (var aesTransform = aes.CreateEncryptor(key, iv))
using (var ms = new MemoryStream())
using (var cs = new CryptoStream(ms, aesTransform, CryptoStreamMode.Write))
{
cs.Write(input, 0, input.Length);
cs.FlushFinalBlock();
return(ms.ToArray());
}
}
}
/// <summary>
/// Encrypts a byte array generating a byte array of cipher text.
/// </summary>
/// <param name="plainTextBytes">
/// Plain text bytes to be encrypted.
/// </param>
/// <returns>
/// Cipher text formatted as a byte array.
/// </returns>
public byte[] EncryptToBytes(byte[] plainTextBytes)
{
// Add salt at the beginning of the plain text bytes (if needed).
byte[] plainTextBytesWithSalt = AddSalt(plainTextBytes);
// Encryption will be performed using memory stream.
MemoryStream memoryStream = new MemoryStream();
// Let's make cryptographic operations thread-safe.
lock (this)
{
// To perform encryption, we must use the Write mode.
CryptoStream cryptoStream = new CryptoStream(
memoryStream,
encryptor,
CryptoStreamMode.Write);
// Start encrypting data.
cryptoStream.Write(plainTextBytesWithSalt,
0,
plainTextBytesWithSalt.Length);
// Finish the encryption operation.
cryptoStream.FlushFinalBlock();
// Move encrypted data from memory into a byte array.
byte[] cipherTextBytes = memoryStream.ToArray();
// Close memory streams.
memoryStream.Close();
cryptoStream.Close();
// Return encrypted data.
return(cipherTextBytes);
}
}
public static string DesDecrypt(string pToDecrypt)
{
//转义特殊字符
pToDecrypt = pToDecrypt.Replace("-", "+");
pToDecrypt = pToDecrypt.Replace("_", "/");
pToDecrypt = pToDecrypt.Replace("~", "=");
byte[] inputByteArray = Convert.FromBase64String(pToDecrypt);
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
{
//des.Key = UTF8Encoding.ASCII.GetByteCount
des.Key = UTF8Encoding.UTF8.GetBytes(sKey);
des.IV = UTF8Encoding.UTF8.GetBytes(sKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
return(str);
}
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="encryptString">待加密的密文</param>
/// <param name="encryptKey">加密密匙</param>
/// <returns></returns>
public static string AESEncrypt(string encryptString, string encryptKey)
{
string returnValue;
byte[] temp = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
Rijndael AESProvider = Rijndael.Create();
try
{
byte[] byteEncryptString = Encoding.Default.GetBytes(encryptString);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, AESProvider.CreateEncryptor(Encoding.Default.GetBytes(encryptKey), temp), CryptoStreamMode.Write);
cryptoStream.Write(byteEncryptString, 0, byteEncryptString.Length);
cryptoStream.FlushFinalBlock();
returnValue = Convert.ToBase64String(memoryStream.ToArray());
}
catch (Exception ex)
{
throw ex;
}
return(returnValue);
}
/// <summary>
/// DES解密
/// </summary>
/// <param name="decryptString">密文</param>
/// <param name="decryptKey">密匙（8位）</param>
/// <returns></returns>
public static string DESDecrypt(string decryptString, string decryptKey)
{
string returnValue;
try
{
byte[] temp = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
DESCryptoServiceProvider dES = new DESCryptoServiceProvider();
byte[] byteDecryptString = Convert.FromBase64String(decryptString);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, dES.CreateDecryptor(Encoding.Default.GetBytes(decryptKey), temp), CryptoStreamMode.Write);
cryptoStream.Write(byteDecryptString, 0, byteDecryptString.Length);
cryptoStream.FlushFinalBlock();
returnValue = Encoding.Default.GetString(memoryStream.ToArray());
}
catch (Exception ex)
{
throw ex;
}
return(returnValue);
}
/// <summary>
/// 암호화 한다.
/// </summary>
/// <param name="_strSouceString"></param>
/// <returns></returns>
public string Encrypting(string _strSouceString)
{
byte[] bytSource;
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
ICryptoTransform encrypto = _tdes.CreateEncryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
bytSource = encoding.GetBytes(_strSouceString);
//if (encoding_codename == null)
// bytSource = Encoding.Default.GetBytes(_strSouceString); //Convert.FromBase64String(_strSouceString); //encoding.GetBytes(_strSouceString);
//else
// bytSource = Encoding.GetEncoding(encoding_codename).GetBytes(_strSouceString);
cs.Write(bytSource, 0, bytSource.Length);
cs.FlushFinalBlock();
return(Convert.ToBase64String(ms.ToArray()));
//return encoding.GetString(ms.ToArray());
}
}
/// <summary>
/// DES加密
/// </summary>
/// <param name="Text">加密内容</param>
/// <param name="sKey">Key</param>
/// <returns></returns>
public static string Encrypt(string Text, string sKey)
{
DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();
byte[] bytes = Encoding.Default.GetBytes(Text);
MD5 mD = MD5.Create();
dESCryptoServiceProvider.Key = Encoding.ASCII.GetBytes(BitConverter.ToString(mD.ComputeHash(Encoding.Default.GetBytes(sKey))).Replace("-", null).Substring(0, 8));
dESCryptoServiceProvider.IV = Encoding.ASCII.GetBytes(BitConverter.ToString(mD.ComputeHash(Encoding.Default.GetBytes(sKey))).Replace("-", null).Substring(0, 8));
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, dESCryptoServiceProvider.CreateEncryptor(), CryptoStreamMode.Write);
cryptoStream.Write(bytes, 0, bytes.Length);
cryptoStream.FlushFinalBlock();
StringBuilder stringBuilder = new StringBuilder();
byte[] array = memoryStream.ToArray();
for (int i = 0; i < array.Length; i++)
{
byte b = array[i];
stringBuilder.AppendFormat("{0:X2}", b);
}
return(stringBuilder.ToString());
}
public static byte[] DecryptFile(byte[] bytesToBeDecrypted, byte[] passwordBytes)
{
byte[] decryptedBytes;
using (var ms = new MemoryStream())
{
using (var aes = new RijndaelManaged())
{
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
using (
var cs = new CryptoStream(ms, aes.CreateDecryptor(passwordBytes, passwordBytes),
CryptoStreamMode.Write))
{
cs.Write(bytesToBeDecrypted, 0, bytesToBeDecrypted.Length);
cs.Close();
}
decryptedBytes = ms.ToArray();
}
}
return(decryptedBytes);
}
public string EncryptString(string inputString)
{
MemoryStream memStream = null;
try
{
byte[] key = { };
byte[] IV = { 12, 21, 43, 17, 57, 35, 67, 27 };
string encryptKey = "aXb2uy4z"; // MUST be 8 characters
key = Encoding.UTF8.GetBytes(encryptKey);
byte[] byteInput = Encoding.UTF8.GetBytes(inputString);
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
memStream = new MemoryStream();
ICryptoTransform transform = provider.CreateEncryptor(key, IV);
CryptoStream cryptoStream = new CryptoStream(memStream, transform, CryptoStreamMode.Write);
cryptoStream.Write(byteInput, 0, byteInput.Length);
cryptoStream.FlushFinalBlock();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
return(Convert.ToBase64String(memStream.ToArray()));
}
public static string DES_Decode(string source, string sKey)
{
if (sKey == "" || sKey == null)
{
sKey = "12345678";
}
byte[] inputByteArray = System.Convert.FromBase64String(source);//Encoding.UTF8.GetBytes(source);
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
{
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
return(str);
}
}
/// <summary>
/// 암호화 풀기
/// </summary>
/// <param name="plainText"></param>
/// <returns></returns>
public string GetDeCryptString(string plainText)
{
Debug.Assert(null != AESKEY);
Debug.Assert(null != AESIV);
Debug.Assert(false == string.IsNullOrEmpty(plainText));
RijndaelManaged aes = new RijndaelManaged
{
KeySize = 256,
BlockSize = 128,
Mode = CipherMode.CBC,
Padding = PaddingMode.PKCS7,
Key = AESKEY,
IV = AESIV
};
var decrypt = aes.CreateDecryptor();
byte[] xBuff = null;
using (var ms = new MemoryStream())
{
using (var cs = new CryptoStream(ms, decrypt, CryptoStreamMode.Write))
{
byte[] xXml = Convert.FromBase64String(plainText);
cs.Write(xXml, 0, xXml.Length);
}
xBuff = ms.ToArray();
}
string Output = Encoding.UTF8.GetString(xBuff);
return(Output);
}
public static string Decrypt(string cipherText, string EncryptionKey)
{
try {
cipherText = cipherText.Replace(" ", "+");
byte[] cipherBytes = Convert.FromBase64String(cipherText);
using (Aes encryptor = Aes.Create()) {
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
encryptor.Key = pdb.GetBytes(32);
encryptor.IV = pdb.GetBytes(16);
using (MemoryStream ms = new MemoryStream()) {
using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write)) {
cs.Write(cipherBytes, 0, cipherBytes.Length);
cs.Close();
}
cipherText = Encoding.Unicode.GetString(ms.ToArray());
}
}
Console.WriteLine(cipherText);
return(cipherText);
} catch (Exception e) {
string message = "Wrong Password";
return(message);
}
}
public string Decrypt(byte[] encryptedMessage, byte[] iv, byte[] key)
{
string message;
using (Aes aes = new AesCryptoServiceProvider())
{
aes.KeySize = 256;
aes.BlockSize = 128;
aes.Key = key;
aes.IV = iv;
// Decrypt the message
using (MemoryStream plaintext = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(plaintext, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(encryptedMessage, 0, encryptedMessage.Length);
cs.Close();
message = Encoding.UTF8.GetString(plaintext.ToArray());
}
}
}
return(message);
}
public static string Encrypt(string textToEncrypt)
{
try
{
var toReturn = "";
var ivByte = Encoding.UTF8.GetBytes(Resources.TextEncryptIV.Substring(0, 8));
var keyByte = Encoding.UTF8.GetBytes(Resources.TextEncryptKey.Substring(0, 8));
var inputByteArray = Encoding.UTF8.GetBytes(textToEncrypt);
using (var des = new DESCryptoServiceProvider())
{
var ms = new MemoryStream();
var cs = new CryptoStream(ms, des.CreateEncryptor(keyByte, ivByte), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
toReturn = Convert.ToBase64String(ms.ToArray());
}
return(toReturn);
}
catch (Exception ae)
{
throw new Exception(ae.Message, ae.InnerException);
}
}
/// <summary>
/// Encrypts the byte array.
/// </summary>
public static byte[] EncryptBytes(byte[] bytes, byte[] secretKey, byte[] iv)
{
RijndaelManaged alg = null;
try
{
alg = new RijndaelManaged() { Key = secretKey, IV = iv };
using (MemoryStream memStream = new MemoryStream())
{
using (CryptoStream cryptoStream =
new CryptoStream(memStream, alg.CreateEncryptor(secretKey, iv), CryptoStreamMode.Write))
{
cryptoStream.Write(bytes, 0, bytes.Length);
}
return memStream.ToArray();
}
}
finally
{
alg?.Clear();
}
}
/// <summary>
/// 加密
/// </summary>
/// <param name="pToEncrypt"></param>
/// <returns></returns>
public string Encrypt(string pToEncrypt)
{
if (string.IsNullOrEmpty(pToEncrypt))
{
return(string.Empty);
}
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
//把字符串放到byte数组中
//原来使用的UTF8编码，我改成Unicode编码了，不行
byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);
//建立加密对象的密钥和偏移量
//使得输入密码必须输入英文文本
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(pv);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return(BitConverter.ToString(ms.ToArray()).Replace("-", ""));
}
private static string _Decrypt(string cipherText, Keys objKey)
{
var cipherBytes = Convert.FromBase64String(cipherText.Trim());
using (var encryptor = Aes.Create())
{
if (encryptor == null)
{
return(cipherText);
}
var pdb = new Rfc2898DeriveBytes(objKey.KeyCode, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
encryptor.Key = pdb.GetBytes(32); encryptor.IV = pdb.GetBytes(16);
using (var ms = new MemoryStream())
{
using (var cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(cipherBytes, 0, cipherBytes.Length); cs.Close();
}
cipherText = Encoding.Unicode.GetString(ms.ToArray());
}
}
return(cipherText.Trim());
}
/// <summary>
/// Encrypts the specified algorithm.
/// The type of algorithm is SymmetricAlgorithm, so the Encrypt
/// supports all kind of Symmetric Algorithm (cf: DES, TripleDes etc).
/// </summary>
///
/// <param name="algorithm">The algorithm.</param>
/// <param name="plainText">The plain text.</param>
/// <param name="key">The key.</param>
/// <param name="cipherMode">The cipher mode.</param>
/// <param name="paddingMode">The padding mode.</param>
/// <returns> The string base on base64. </returns>
public static string Encrypt(SymmetricAlgorithm algorithm, string plainText, byte[] key,
CipherMode cipherMode, PaddingMode paddingMode)
{
byte[] plainBytes;
byte[] cipherBytes;
algorithm.Key = key;
algorithm.Mode = cipherMode;
algorithm.Padding = paddingMode;
BinaryFormatter bf = new BinaryFormatter();
using (MemoryStream stream = new MemoryStream())
{
bf.Serialize(stream, plainText);
plainBytes = stream.ToArray();
}
using (MemoryStream ms = new MemoryStream())
{
// Defines a stream for cryptographic transformations
CryptoStream cs = new CryptoStream(ms, algorithm.CreateEncryptor(), CryptoStreamMode.Write);
// Writes a sequence of bytes for encrption
cs.Write(plainBytes, 0, plainBytes.Length);
// Closes the current stream and releases any resources
cs.Close();
// Save the ciphered message into one byte array
cipherBytes = ms.ToArray();
// Closes the memorystream object
ms.Close();
}
string base64Text = Convert.ToBase64String(cipherBytes);
return(base64Text);
}
public static string Encrypt(string encryptString)
{
string EncryptionKey = "0ram@1234xxxxxxxxxxtttttuuuuuiiiiio";
byte[] clearBytes = Encoding.Unicode.GetBytes(encryptString);
using (Aes encryptor = Aes.Create())
{
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] {
0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76
});
encryptor.Key = pdb.GetBytes(32);
encryptor.IV = pdb.GetBytes(16);
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(clearBytes, 0, clearBytes.Length);
cs.Close();
}
encryptString = Convert.ToBase64String(ms.ToArray());
}
}
return(encryptString);
}
static byte[] Decrypt(byte[] value, byte[] password)
{
byte[] Decrypt = null;
var salt = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
using (MemoryStream memoryStream = new MemoryStream())
{
using (RijndaelManaged rijndaelManaged = new RijndaelManaged {
KeySize = 256, BlockSize = 128, Mode = CipherMode.CBC
})
{
Rfc2898DeriveBytes rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, salt, 1000);
rijndaelManaged.Key = rfc2898DeriveBytes.GetBytes(rijndaelManaged.KeySize / 8);
rijndaelManaged.IV = rfc2898DeriveBytes.GetBytes(rijndaelManaged.BlockSize / 8);
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, rijndaelManaged.CreateDecryptor(), CryptoStreamMode.Write))
{
cryptoStream.Write(value, 0, value.Length);
cryptoStream.Close();
}
Decrypt = memoryStream.ToArray();
}
}
return(Decrypt);
}
/// <summary>
/// 加密方法
/// </summary>
/// <param name="Source">待加密的串</param>
/// <returns>经过加密的串</returns>
public static string Encrypto(string Source)
{
if (Key.Length != KeySize)
{
return("");
}
//if (Source.Length <= KeyPostion)
// Source += Key;
//else
// Source.Insert(KeyPostion, Key);
byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
MemoryStream ms = new MemoryStream();
mobjCryptoService.Key = GetLegalKey(Key);
mobjCryptoService.IV = GetLegalIV();
ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
cs.Write(bytIn, 0, bytIn.Length);
cs.FlushFinalBlock();
ms.Close();
byte[] bytOut = ms.ToArray();
string encryStr = Convert.ToBase64String(bytOut);
//200字节处放32位密码
if (encryStr.Length <= KeyPostion)
{
encryStr += Key;
}
else
{
encryStr = encryStr.Insert(KeyPostion, Key);
}
return(encryStr);
}
/// <summary>
/// DES解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
/// <returns>解密成功返回解密后的字符串，失败返源串</returns>
public static string Decrypt(string decryptString, string decryptKey = "12345678")
{
if (string.IsNullOrEmpty(decryptString))
{
return(string.Empty);
}
try
{
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] rgbIV = Keys;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return(Encoding.UTF8.GetString(mStream.ToArray()));
}
catch
{
return(decryptString);
}
}
public static string Encrypt(string sourceString)
{
byte[] btKey = Encoding.UTF8.GetBytes(sKey);
byte[] btIV = Encoding.UTF8.GetBytes(sKey);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
using (MemoryStream ms = new MemoryStream())
{
byte[] inData = Encoding.UTF8.GetBytes(sourceString);
try
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(btKey, btIV), CryptoStreamMode.Write))
{
cs.Write(inData, 0, inData.Length);
cs.FlushFinalBlock();
}
return(Convert.ToBase64String(ms.ToArray()));
}
catch
{
throw;
}
}
}
public static string EncryptRijndael(string original)
{
byte[] encrypted;
byte[] toEncrypt;
UTF8Encoding utf8Converter = new UTF8Encoding();
toEncrypt = utf8Converter.GetBytes(original);
RijndaelManaged myRijndael = new RijndaelManaged();
MemoryStream ms = new MemoryStream();
ICryptoTransform encryptor = myRijndael.CreateEncryptor(Key, IV);
CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
cs.Write(toEncrypt, 0, toEncrypt.Length);
cs.FlushFinalBlock();
encrypted = ms.ToArray();
string encryptedString = Convert.ToBase64String(encrypted);
return encryptedString;
}
public static string Decrypt(string cipherText)
{
try
{
string EncryptionKey = "MAKV2SPBNI99212";
cipherText = cipherText.Replace(" ", "+");
byte[] cipherBytes = Convert.FromBase64String(cipherText);
using (Aes encryptor = Aes.Create())
{
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
encryptor.Key = pdb.GetBytes(32);
encryptor.IV = pdb.GetBytes(16);
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(cipherBytes, 0, cipherBytes.Length);
cs.Close();
}
cipherText = Encoding.Unicode.GetString(ms.ToArray());
}
}
return cipherText;
}
catch (Exception ex)
{
return "0";
}
}
