快速轻量级.NET客户端加密 - >服务器解密

Question

我有一个简单的客户端/服务器设置.客户端和服务器都有私钥.

.NET为我提供了什么？

ClientData-> ClientEncrypt with KEY-> Transmit to Server-> ServerDecrypt with KEY-> ClientData

任何人都可以建议任何快速简单的库来阅读？

谢谢

Answer 1

using System;
using System.Security.Cryptography;
using System.IO;
using System.Text;

namespace ServiceConsole
{
    public class Obfuscation
    {
        public static byte[] Encrypt(string data)
        {
            return Encrypt(data, SecurityCredentials.KeyString, SecurityCredentials.IvString);
        }

        public static byte[] Encrypt(string data, string key, string iv)
        {
            return Encrypt(data, key, iv, SecurityCredentials.PaddingString);
        }

        public static byte[] Encrypt(string data, string key, string iv, char paddingCharacter)
        {
            byte[] keyBytes = Encoding.UTF8.GetBytes(key.PadLeft(32, paddingCharacter).Substring(0, 32));
            byte[] ivBytes = Encoding.UTF8.GetBytes(iv.PadLeft(32, paddingCharacter).Substring(0, 32));

            RijndaelManaged rijndaelManaged = new RijndaelManaged();
            rijndaelManaged.BlockSize = 256;
            rijndaelManaged.KeySize = 256;

            MemoryStream memoryStream = new MemoryStream();

            ICryptoTransform iCryptoTransform = rijndaelManaged.CreateEncryptor(keyBytes, ivBytes);

            CryptoStream cryptoStream = new CryptoStream(memoryStream, iCryptoTransform, CryptoStreamMode.Write);

            StreamWriter streamWriter = new StreamWriter(cryptoStream);

            streamWriter.Write(data);
            streamWriter.Flush();

            cryptoStream.FlushFinalBlock();

            byte[] returnBytes = memoryStream.ToArray();

            /// Disposal
            streamWriter.Dispose();
            cryptoStream.Dispose();
            iCryptoTransform.Dispose();
            memoryStream.Dispose();
            rijndaelManaged.Clear();
            ///

            return returnBytes;
        }

        public static string Decrypt(byte[] data)
        {
            return Decrypt(data, SecurityCredentials.KeyString, SecurityCredentials.IvString);
        }

        public static string Decrypt(byte[] data, string key, string iv)
        {
            return Decrypt(data, key, iv, SecurityCredentials.PaddingString);
        }

        public static string Decrypt(byte[] data, string key, string iv, char paddingCharacter)
        {
            byte[] keyBytes = Encoding.UTF8.GetBytes(key.PadLeft(32, paddingCharacter).Substring(0, 32));
            byte[] ivBytes = Encoding.UTF8.GetBytes(iv.PadLeft(32, paddingCharacter).Substring(0, 32));

            RijndaelManaged rijndaelManaged = new RijndaelManaged();
            rijndaelManaged.BlockSize = 256;
            rijndaelManaged.KeySize = 256;

            MemoryStream memoryStream = new MemoryStream(data);

            ICryptoTransform iCryptoTransform = rijndaelManaged.CreateDecryptor(keyBytes, ivBytes);

            CryptoStream cryptoStream = new CryptoStream(memoryStream, iCryptoTransform, CryptoStreamMode.Read);

            StreamReader streamReader = new StreamReader(cryptoStream);

            string returnString = streamReader.ReadLine();

            /// Disposal
            streamReader.Dispose();
            cryptoStream.Dispose();
            iCryptoTransform.Dispose();
            memoryStream.Dispose();
            rijndaelManaged.Clear();
            ///

            return returnString;
        }
    }
}