コード例 #1
0
        /// <summary>
        /// Encrypts/decrypts a byte array
        /// </summary>
        /// <param name="buffer">Bytes to crypt</param>
        /// <param name="key">"Password" for encryption</param>
        /// <param name="iv">"Salt" for encryption. A starting point for encryption.</param>
        /// <param name="encrypt">Do you wish to encrypt or decrypt?</param>
        /// <param name="algorithm">Encryption algorithm. AES/DES/TripleDES</param>
        /// <returns></returns>
        public static byte[] Crypt(byte[] buffer, byte[] key, byte[] iv, bool encrypt = true, string algorithm = "aes")
        {

            AesCryptoServiceProvider aes = null;
            DESCryptoServiceProvider des = null;
            TripleDESCryptoServiceProvider tripsDes = null;

            ICryptoTransform cryptor;

            switch (algorithm.ToLower())
            {

                case "aes":
                    aes = new AesCryptoServiceProvider();
                    aes.Key = key;
                    aes.IV = iv;
                    //aes.Padding = PaddingMode.None;

                    if (encrypt) cryptor = aes.CreateEncryptor();
                    else cryptor = aes.CreateDecryptor();

                    break;

                case "des":
                    des = new DESCryptoServiceProvider();
                    des.Key = key;
                    des.IV = iv;
                    //des.Padding = PaddingMode.None;

                    if (encrypt) cryptor = des.CreateEncryptor();
                    else cryptor = des.CreateDecryptor();

                    break;

                case "tripledes":
                    tripsDes = new TripleDESCryptoServiceProvider();
                    tripsDes.Key = key;
                    tripsDes.IV = iv;
                    //tripsDes.Padding = PaddingMode.None;


                    if (encrypt) cryptor = tripsDes.CreateEncryptor();
                    else cryptor = tripsDes.CreateDecryptor();

                    break;

                default:
                    throw new ArgumentException(algorithm + " is not an implemented encryption algorithm. Use AES/DES/TripleDES.");

            }
            try
            {

                return cryptor.TransformFinalBlock(buffer, 0, buffer.Length);

            }
            catch (CryptographicException)
            {
                throw new ArgumentException("Ensure you have the right key/IV.");
            }
            finally
            {

                                        cryptor.Dispose();
                if (aes != null)        aes.Dispose();
                if (des != null)        des.Dispose();
                if (tripsDes != null)   tripsDes.Dispose();

            }

        }
コード例 #2
0
        static void Main(string[] args)
        {
            const int n = 100 * 1000;
            var sw = new Stopwatch();
            Random r = new Random();
            var data = new byte[1024];
            var key8B = new byte[8];
            var key16B = new byte[16];
            var key24B = new byte[24];
            var key32B = new byte[32];
            r.NextBytes(data);
            r.NextBytes(key8B);
            r.NextBytes(key16B);
            r.NextBytes(key24B);
            r.NextBytes(key32B);
            Action<string> outputToConsole = (s) =>
            {
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.WriteLine(s);
            };

            // AES
            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("AES");
            var aes = new AesCryptoServiceProvider();
            aes.Padding = PaddingMode.PKCS7;
            aes.Key = key16B;
            Action doAes = () => EncryptDecryptAndDispose(aes.CreateEncryptor(), aes.CreateDecryptor(), data);
            doAes.Repeat(n)
                .OutputPerformance(sw, outputToConsole)();
            aes.Dispose();

            // RSA
            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("DES");
            var des = new DESCryptoServiceProvider();
            des.IV = key8B;
            des.Key = key8B;
            Action doDes = () => EncryptDecryptAndDispose(des.CreateEncryptor(), des.CreateDecryptor(), data);
            doDes.Repeat(n)
                .OutputPerformance(sw, outputToConsole)();
            des.Dispose();

            // RC2
            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("RC2");
            var rc2 = new RC2CryptoServiceProvider();
            rc2.IV = key8B;
            rc2.Key = key8B;
            Action doRc2 = () => EncryptDecryptAndDispose(rc2.CreateEncryptor(), rc2.CreateDecryptor(), data);
            doRc2.Repeat(n)
                .OutputPerformance(sw, outputToConsole)();
            rc2.Dispose();

            // Rijndael
            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("Rijndael");
            var rijndael = new RijndaelManaged();
            rijndael.IV = key16B;
            rijndael.Key = key16B;
            Action doRijndael = () => EncryptDecryptAndDispose(rijndael.CreateEncryptor(), rijndael.CreateDecryptor(), data);
            doRijndael.Repeat(n)
                .OutputPerformance(sw, outputToConsole)();
            rijndael.Dispose();

            // 3DES
            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("3DES");
            var tripleDes = new TripleDESCryptoServiceProvider();
            tripleDes.IV = key8B;
            tripleDes.Key = key24B;
            Action do3des = () => EncryptDecryptAndDispose(tripleDes.CreateEncryptor(), tripleDes.CreateDecryptor(), data);
            do3des.Repeat(n)
                .OutputPerformance(sw, outputToConsole)();
            tripleDes.Dispose();

            // RSA
            Console.ForegroundColor = ConsoleColor.DarkCyan;
            Console.WriteLine("RSA");
            RSAParameters param = new RSAParameters();
            param.Exponent = new byte[] {0, 1, 0};
            var store = new X509Store(StoreLocation.LocalMachine);
            store.Open(OpenFlags.ReadOnly);
            X509Certificate cert = null;
            foreach (X509Certificate cer in store.Certificates)
            {
                if (cer != null)
                {
                    cert = cer;
                    break;
                }
            }
            param.Modulus = cert.GetPublicKey();

            var rsa = new RSACryptoServiceProvider();
            rsa.ImportParameters(param);

            Action doRsa = () =>
                {

                    var encryptedData = rsa.Encrypt(key32B, true);
                    //var decryptedData = rsa.Decrypt(encryptedData, true);
                };
            doRsa.Repeat(n)
                .OutputPerformance(sw, outputToConsole)();
            rsa.Dispose();

            Console.Read();
        }
コード例 #3
0
ファイル: DECCryptography.cs プロジェクト: flyeven/Utility
        /// <summary>
        /// 加密字符串
        /// </summary>
        /// <param name="basicData">源字符串</param>
        /// <returns>加密后的字符串</returns>
        public string EncryptString(string basicData)
        {
            DESCryptoServiceProvider provider = null;
            MemoryStream ms = null;
            CryptoStream cst = null;
            StreamWriter sw = null;

            try
            {
                byte[] byteKey = System.Text.ASCIIEncoding.ASCII.GetBytes(_cryptographyKey);

                provider = new DESCryptoServiceProvider();
                ms = new MemoryStream();
                cst = new CryptoStream(ms, provider.CreateEncryptor(byteKey, byteKey), CryptoStreamMode.Write);

                sw = new StreamWriter(cst);
                sw.Write(basicData);
                sw.Flush();
                cst.FlushFinalBlock();
                sw.Flush();

                return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
            }
            catch
            {
                return null;
            }
            finally
            {
                if (provider != null)
                    provider.Dispose();
                if (ms != null)
                    ms.Dispose();
                if (cst != null)
                    cst.Dispose();
                if (sw != null)
                    sw.Dispose();
            }
        }
コード例 #4
0
ファイル: DECCryptography.cs プロジェクト: flyeven/Utility
        /// <summary>
        /// 解密字符串
        /// </summary>
        /// <param name="basicData">加密了的字符串</param>
        /// <returns>解密后的字符串</returns>
        public string DecryptString(string basicData)
        {
            DESCryptoServiceProvider provider = null;
            MemoryStream ms = null;
            CryptoStream cst = null;
            StreamReader sr = null;

            try
            {
                byte[] byteEnc;
                byte[] byteKey = System.Text.ASCIIEncoding.ASCII.GetBytes(_cryptographyKey);

                try
                {
                    byteEnc = Convert.FromBase64String(basicData);
                }
                catch
                {
                    return null;
                }

                provider = new DESCryptoServiceProvider();
                ms = new MemoryStream(byteEnc);
                cst = new CryptoStream(ms, provider.CreateDecryptor(byteKey, byteKey), CryptoStreamMode.Read);
                sr = new StreamReader(cst);
                return sr.ReadToEnd();
            }
            catch
            {
                return null;
            }
            finally
            {
                if (sr != null)
                    sr.Dispose();
                if (cst != null)
                    cst.Dispose();
                if (ms != null)
                    ms.Dispose();
                if (provider != null)
                    provider.Dispose();
            }
        }
コード例 #5
0
ファイル: DESEncryptor.cs プロジェクト: tianjing/Packages
 /// <summary>
 /// Encrypt byte 
 /// </summary>
 /// <param name="data">Bytes to encrypt.</param>
 /// <returns></returns>
 private byte[] EncryptToBytes(byte[] data)
 {
     DESCryptoServiceProvider desc = new DESCryptoServiceProvider();
     try
     {
         desc.Key = mKey;
         desc.IV = mIV;
         desc.Mode = mMode;
         desc.Padding = mPaddingMode;
         return desc.CreateEncryptor().TransformFinalBlock(data, 0, data.Length);
     }
     finally
     {
         if (null != desc)
         {
             desc.Dispose();
         }
     }
 }