C# + PHP RSA保密通讯

学习中...

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace LiveMGT
{public partial class Main : Form{private readonly string AppID = "703093033";private readonly string AppKey = "e2470a332d21d641298136c2754331aa";private readonly HttpHelper HTTP;public Main(){InitializeComponent();string PuKey = File.ReadAllText(@".\Config\PuKey.xml");INIHelper INIFile = new INIHelper();string Url = INIFile.Read("Server", "Url", "Null", @".\Config\Client.ini");HTTP = new HttpHelper(AppID, AppKey, PuKey, Url);}private void button5_Click(object sender, EventArgs e){HTTP.POST(textBox1.Text,out string reStr,out string errStr);textBox2.Text = errStr;textBox3.Text = reStr;}private void Main_Load(object sender, EventArgs e){}}
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using zlib;namespace LiveMGT
{class HttpHelper{private readonly string AppID;private readonly string AppKey;private readonly string PuKey;private readonly string Url;private string PHPSESSID;#region 初始化/// <summary>/// 初始化/// </summary>public HttpHelper(string _AppID, string _AppKey, string _PuKey, string _Url){AppID = _AppID;AppKey = _AppKey;PuKey = _PuKey;Url = _Url;PHPSESSID = "";}#endregion#region HTTP POST/// <summary>/// HTTP POST/// </summary>/// <param name="dataStr">需要提交的字符串</param>/// <param name="resultStr">提交后网页返回的JSON字符串</param>/// <param name="errStr">如果提交失败返回错误内容</param>/// <returns>成功返回true，失败返回false</returns>public bool POST(string dataStr,out string resultStr,out string errStr) {resultStr = "";errStr = "";if (dataStr == string.Empty || dataStr == "") {errStr = "request_data_err";return false;}try{string NumRan = RanNum();                                       //请求随机string TimeRnd = GetTimeStamp(true);                            //请求时间string KeyRnd = MD5(AppID + TimeRnd + NumRan + AppKey);         //请求密钥KeyRnd = HmacMD5(KeyRnd, AppKey);                               //请求密钥string RSARnd = RSAENC(PuKey, KeyRnd);                          //公钥加密RSARnd = StrToHex(RSARnd);                                      //公钥加密if (RSARnd == ""){errStr = "request_rsa_err";return false;}//-----------------------------------------------------------------------------int dataLen = dataStr.Length;                                   //数据长度dataStr = Compress(dataStr);                                    //数据压缩string postStr = RC4ENC(dataStr, KeyRnd);                       //加密数据byte[] sendData = Encoding.UTF8.GetBytes(postStr);              //发送数据             string cookieStr = PHPSESSID + ";appid=" + AppID + ";time=" + TimeRnd + ";rand=" + NumRan + ";length=" + dataLen + ";key=" + RSARnd;//----------------------------------------------------------------------------- HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);request.Method = "POST";request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36";request.Timeout = 10000;request.KeepAlive = false;request.Headers.Add("Cookie", cookieStr);request.ContentLength = sendData.Length;Stream newStream = request.GetRequestStream();newStream.Write(sendData, 0, sendData.Length);newStream.Close();HttpWebResponse myResponse = (HttpWebResponse)request.GetResponse();StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);string content = reader.ReadToEnd();reader.Close();reader.Dispose();cookieStr = myResponse.Headers.Get("Set-Cookie");resultStr = content;//不管是否成功都返回//-----------------------------------------------------------------------------  if (PHPSESSID == ""){PHPSESSID = MidStrEx(cookieStr, "PHPSESSID=", ";");if (PHPSESSID == string.Empty || PHPSESSID == ""){errStr = "response_phpsessid_err";return false;}PHPSESSID = "PHPSESSID=" + PHPSESSID;}string _appid = MidStrEx(cookieStr, "appid=", ";");if (_appid == string.Empty || _appid == "" || _appid != AppID){errStr = "response_appid_err";return false;}//----------------------------------------------------------------------------- NumRan = MidStrEx(cookieStr, "rand=", ";");                             //请求随机TimeRnd = MidStrEx(cookieStr, "time=", ";");                            //请求时间RSARnd = MidStrEx(cookieStr, "key=", ";");                              //公钥加密dataLen = int.Parse(MidStrEx(cookieStr, "length=", ";"));               //数据长度if (NumRan == string.Empty || NumRan == "" || TimeRnd == string.Empty || TimeRnd == "" || RSARnd == string.Empty || RSARnd == "" || dataLen <= 0){errStr = "response_cooikes_err";return false;}KeyRnd = MD5(AppID + TimeRnd + NumRan + AppKey);                        //请求密钥KeyRnd = HmacMD5(KeyRnd, AppKey);                                       //请求密钥RSARnd = HexToStr(RSARnd);                                              //公钥加密//----------------------------------------------------------------------------- if (RSACheck(content, RSARnd, PuKey) == false){errStr = "response_check_err";return false;}content = RC4DEC(content, KeyRnd);if (content == string.Empty || content == "") {errStr = "response_rc4dec_err";return false;}content = UCompress(content, dataLen);if (content == string.Empty || content == ""){errStr = "response_ucompress_err";return false;}resultStr = content;return true;} catch{return false;}}#endregion#region 取随机数/// <summary>/// 取随机数/// </summary>/// <returns></returns>private static string RanNum() {try{Random rnd = new Random();string num = rnd.Next(11111111, 88888888).ToString();return num;}catch {return "";}}#endregion#region 取字符串中间/// <summary>/// 取字符串中间/// </summary>/// <param name="sourse">需要截取的字符串</param>/// <param name="startstr">字符串前面</param>/// <param name="endstr">字符串后面</param>/// <returns>返回截取后字符串</returns>private static string MidStrEx(string sourse, string startstr, string endstr){try{string result = "";int startindex, endindex;startindex = sourse.IndexOf(startstr);if (startindex == -1)return result;string tmpstr = sourse.Substring(startindex + startstr.Length);endindex = tmpstr.IndexOf(endstr);if (endindex == -1)return result;result = tmpstr.Remove(endindex);return result;}catch{return "";}}#endregion#region 数据解压/// <summary>/// 数据解压/// </summary>/// <param name="strSource">需要解压的字符串</param>/// <param name="sLen">字符串未压缩之前的长度</param>/// <returns>返回解压后字符串</returns>private static string UCompress(string strSource,int sLen){try {int data;int stopByte = -1;byte[] Buffer = Convert.FromBase64String(strSource); // 解base64MemoryStream intms = new MemoryStream(Buffer);ZInputStream inZStream = new ZInputStream(intms);byte[] inByteList = new byte[sLen];int i = 0;while (stopByte != (data = inZStream.Read())){inByteList[i] = (byte)data;i++;}inZStream.Close();return Encoding.UTF8.GetString(inByteList, 0, inByteList.Length);} catch {return "";}}#endregion#region 数据压缩/// <summary>/// 数据压缩/// </summary>/// <param name="Source">需要压缩的字符串</param>/// <returns>压缩后字符串</returns>private static string Compress(string Source){try{byte[] byteData = Encoding.UTF8.GetBytes(Source);MemoryStream ms = new MemoryStream();Stream s = new ZOutputStream(ms, 9);s.Write(byteData, 0, byteData.Length);s.Close();byte[] compressData = (byte[])ms.ToArray();ms.Flush();ms.Close();return Convert.ToBase64String(compressData);}catch{return "";}}#endregion#region 获取当前时间戳/// <summary>  /// 获取当前时间戳  /// </summary>  /// <param name="bflag">为真时获取10位时间戳,为假时获取13位时间戳.bool bflag = true</param>  /// <returns>返回时间戳字符串</returns>  private static string GetTimeStamp(bool bflag){try {TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);if (bflag)return Convert.ToInt64(ts.TotalSeconds).ToString();elsereturn Convert.ToInt64(ts.TotalMilliseconds).ToString();} catch{return "";}}#endregion#region 用MD5加密字符串/// <summary>/// 用MD5加密字符串/// </summary>/// <param name="password">待加密的字符串</param>/// <returns>返回的加密后的字符串</returns>private static string MD5(string password){try {MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();byte[] hashedDataBytes;hashedDataBytes = md5Hasher.ComputeHash(Encoding.UTF8.GetBytes(password));StringBuilder tmp = new StringBuilder();md5Hasher.Clear();md5Hasher.Dispose();foreach (byte i in hashedDataBytes){tmp.Append(i.ToString("x2"));}return tmp.ToString();//默认情况} catch{return "";}}#endregion#region HmacMD5加密/// <summary>/// HmacMD5加密/// </summary>/// <param name="source">需要加密的字符串</param>/// <param name="keyStr">用于加密的密钥</param>/// <returns>加密后的字符串</returns>private static string HmacMD5(string source, string keyStr){try {HMACMD5 provider = new HMACMD5(Encoding.UTF8.GetBytes(keyStr));byte[] hashedPassword = provider.ComputeHash(Encoding.UTF8.GetBytes(source));StringBuilder displayString = new StringBuilder();for (int i = 0; i < hashedPassword.Length; i++){displayString.Append(hashedPassword[i].ToString("X2"));}provider.Clear();provider.Dispose();return displayString.ToString().ToLower();//转换到小写}catch{return "";}}#endregion#region RC4加密/// <summary>/// RC4加密/// </summary>/// <param name="source">需要加密的字符串</param>/// <param name="keyStr">用于加密的密钥</param>/// <returns>返回加密后的字符串</returns>private static string RC4ENC(string source, string keyStr){try{byte[] contents = Encoding.UTF8.GetBytes(source);return Convert.ToBase64String(RC4(contents, keyStr));//转为base64编码}catch{return "";}}#endregion#region RC4解密/// <summary>/// RC4解密/// </summary>/// <param name="source">需要加密的字符串</param>/// <param name="keyStr">用于加密的密钥</param>/// <returns>返回解密后的字符串</returns>private static string RC4DEC(string source, string keyStr){try{byte[] data = Convert.FromBase64String(source);//base64编码还原byte[] str = RC4(data, keyStr);return Encoding.UTF8.GetString(str);}catch{return "";}}#endregion#region RC4加密解密/// <summary>/// RC4加密解密/// </summary>/// <param name="source">需要加密的字符串</param>/// <param name="keyStr">用于加密的密钥</param>/// <returns>加密后的字节集</returns>private static byte[] RC4(byte[] contents, string keyStr){byte[] results = new byte[contents.Length];byte[] pwds = Encoding.UTF8.GetBytes(keyStr);byte[] key = new byte[256];byte[] box = new byte[256];for (int i = 0; i < 256; i++){key[i] = pwds[i % pwds.Length];box[i] = (byte)i;}for (int j = 0, i = 0; i < 256; i++){j = (j + box[i] + key[i]) % 256;byte tmp = box[i];box[i] = box[j];box[j] = tmp;}for (int a = 0, j = 0, i = 0; i < contents.Length; i++){a = (a + 1) % 256;j = (j + box[a]) % 256;byte tmp = box[a];box[a] = box[j];box[j] = tmp;byte k = box[((box[a] + box[j]) % 256)];results[i] = (byte)(contents[i] ^ k);}return results;      }#endregion#region 字符串到十六进制/// <summary>/// 字符串到十六进制/// </summary>/// <param name="source">需要转十六进制的字符串</param>/// <returns>返回编好后的十六进制字符串</returns>private static string StrToHex(string source){try {string result = string.Empty;byte[] arrByte = Encoding.UTF8.GetBytes(source);for (int i = 0; i < arrByte.Length; i++){result += Convert.ToString(arrByte[i], 16);}return result.ToUpper();} catch{return "";}}#endregion#region 十六进制到字符串/// <summary>/// 十六进制到字符串/// </summary>/// <param name="hex">需要解码到字符串的十六进制文本</param>/// <returns>返回解码后的十六进制字符串</returns>private static string HexToStr(string hex){try{byte[] arrByte = new byte[hex.Length / 2];int index = 0;for (int i = 0; i < hex.Length; i += 2){arrByte[index++] = Convert.ToByte(hex.Substring(i, 2), 16);}return Encoding.UTF8.GetString(arrByte);} catch{return "";}}#endregion#region RSA公钥加密/// <summary>/// RSA公钥加密/// </summary>/// <param name="xmlPublicKey">公钥XML文件</param>/// <param name="content">需要加密的内容</param>/// <returns>返回加密后字符串</returns>private static string RSAENC(string xmlPublicKey, string content){try{string encryptedContent = string.Empty;using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider()){rsa.FromXmlString(xmlPublicKey);byte[] encryptedData = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);encryptedContent = Convert.ToBase64String(encryptedData);}return encryptedContent;}catch {return "";}}#endregion#region RSA验证/// <summary>/// /// </summary>/// <param name="str">需要验证的文本</param>/// <param name="sign">私钥签名的字符串</param>/// <param name="str_publicKey">公钥XML文件</param>/// <returns>返回验证结果</returns>private static bool RSACheck(string str, string sign, string str_publicKey){try{byte[] SignedData = Convert.FromBase64String(sign);ASCIIEncoding ByteConverter = new ASCIIEncoding();byte[] DataToVerify = ByteConverter.GetBytes(str);RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider();RSAalg.FromXmlString(str_publicKey);bool result = RSAalg.VerifyData(DataToVerify, new SHA1CryptoServiceProvider(), SignedData);RSAalg.Clear();RSAalg.Dispose();return result;}catch{return false;}}#endregion}
}

PHP

<?php
//-----------------------APP基础配置----------------------------
define("app_id", "703093033");
define("app_key", "e2470a332d21d641298136c2754331aa");
//-----------------------RSA密钥配置----------------------------
define("private_key", "-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----");
//-----------------------校验函数定义----------------------------
//十六进制转字符串
function hexToStr($hex){$string="";for($i=0;$i<strlen($hex)-1;$i+=2)$string.=chr(hexdec($hex[$i].$hex[$i+1]));return $string;
}
//字符串转十六进制
function strToHex($string){$hex="";for($i=0;$i<strlen($string);$i++)$hex.=dechex(ord($string[$i]));$hex=strtoupper($hex);return $hex;
}
//私钥解密由加密函数加密后的base64编码
function rsadec($data){     $pi_key = openssl_pkey_get_private(private_key);$data = base64_decode($data);$decrypted = "";$isOkay = openssl_private_decrypt($data, $decrypted, $pi_key);if(!$isOkay){return false;}    return $decrypted;
}
//RSA签名
function getSign($signString){$privKeyId = openssl_pkey_get_private(private_key);$signature = '';openssl_sign($signString, $signature, $privKeyId);openssl_free_key($privKeyId);return base64_encode($signature);
}
//HMAC_MD5加密
function hmac($data, $key){if (function_exists('hash_hmac')) {return hash_hmac('md5', $data, $key);}$key = (strlen($key) > 64) ? pack('H32', 'md5') : str_pad($key, 64, chr(0));$ipad = substr($key,0, 64) ^ str_repeat(chr(0x36), 64);$opad = substr($key,0, 64) ^ str_repeat(chr(0x5C), 64);return md5($opad.pack('H32', md5($ipad.$data)));
}
//rc4加密并返回base64编码
function rc4enc($pwd, $data){return base64_encode(rc4($pwd, $data));
}
//解密由加密函数加密后的base64编码
function rc4dec($pwd, $data){$data = base64_decode($data);return rc4($pwd, $data);
}
//RC4加密解密
function rc4($pwd, $data){$cipher      = "";$key[]       = "";$box[]       = "";$pwd_length  = strlen($pwd);$data_length = strlen($data);for ($i = 0; $i < 256; $i++) {$key[$i] = ord($pwd[$i % $pwd_length]);$box[$i] = $i;}for ($j = $i = 0; $i < 256; $i++) {$j       = ($j + $box[$i] + $key[$i]) % 256;$tmp     = $box[$i];$box[$i] = $box[$j];$box[$j] = $tmp;}for ($a = $j = $i = 0; $i < $data_length; $i++) {$a       = ($a + 1) % 256;$j       = ($j + $box[$a]) % 256;$tmp     = $box[$a];$box[$a] = $box[$j];$box[$j] = $tmp;$k       = $box[(($box[$a] + $box[$j]) % 256)];$cipher .= chr(ord($data[$i]) ^ $k);}return $cipher;
}//回复验证信息
function sendMsg($msg){$time = time();$rand = rand(11111111, 88888888);$md5 = md5(app_id.$time.$rand.app_key);$md5 = hmac($md5,app_key);setcookie("appid",app_id,time() + 300);  //5分钟内有效setcookie("time",$time,time() + 300);        //5分钟内有效setcookie("rand",$rand,time() + 300);        //5分钟内有效//----------------------------------------------$len = strlen($msg);                       //长度setcookie("length",$len,time() + 300);       //5分钟内有效//----------------------------------------------$str = base64_encode(gzcompress($msg, 9)); //压缩$str = rc4enc($md5,$str);                  //加密$key = getSign($str);                      //签名$key = strToHex($key);setcookie("key",$key,time() + 300);       //5分钟内有效//----------------------------------------------echo $str;exit();
}
//-----------------------取出_COOKIE----------------------------
$appid = $_COOKIE["appid"];      //请求标识
$time = $_COOKIE["time"];        //请求时间
$rand = $_COOKIE["rand"];        //请求随机
$length = $_COOKIE["length"];    //数据长度
$key = $_COOKIE["key"];          //公钥加密
$now = time() - 1;             //现行时间戳(减1防止提交太快造成负数)
//判断参数合法性
if($appid == "" or $time =="" or $rand =="" or $length =="" or $key ==""){echo "COOKIE_ERR";exit();
}
//判断appid
if($appid != app_id){echo "AppID_ERR";exit();
}
//请求间隔
$interval = $time - $now;
//必须是10秒之内的请求
if($interval < 0 or $interval > 10){echo "interval_err";exit();
}
//判断随机数
if($rand <= 0){ echo "rand_err";exit();
}
//还原加密串
$key = hexToStr($key);
if($key == ""){echo "key_err";exit();
}
//解密加密串
$key = rsadec($key);
if($key == ""){ echo "rsa_err";exit();
}
//检测公钥加密
$md5 = md5($appid.$time.$rand.app_key);
$md5 = hmac($md5,app_key);
if($key != $md5){                  echo "rc4_err";exit();
}
//取请求数据
$post = file_get_contents('php://input');
if($post == ""){echo "post_err";exit();
}
//解密数据
$post = rc4dec($key,$post);
if($post == ""){echo "rc4dec_err";exit();
}
//解压数据
$post = gzuncompress(base64_decode($post));
if($post == ""){echo "gzuncompress_err";exit();
}echo sendMsg($post);?>

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