temu客户端程序

AllBase/SignHelper.cs

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+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace AllBase
+{
+    public static class SignHelper
+    {
+        public static string GetSign()
+        {
+            string url = BaseClass.LoginApiUrl + "?obj=littlecow/sign&act=get_sign";
+            string sign = GetHtml.GetUtf8(url, BaseClass.ChromeUserAgent);
+            if (!string.IsNullOrEmpty(sign))
+            {
+                Encoding utf8 = Encoding.UTF8;
+                Encoding ascii = Encoding.ASCII;
+
+                string input = sign;
+                sign = ascii.GetString(Encoding.Convert(utf8, ascii, utf8.GetBytes(input)));
+                sign = sign.Trim('?');
+            }
+            return sign;
+        }
+
+        public static string DESDecrypt(string decrypt, string key = "")
+        {
+            if (string.IsNullOrEmpty(key))
+            {
+                key = "20190813";
+            }
+            try
+            {
+                DESCryptoServiceProvider oDESCryptoServiceProvider = new DESCryptoServiceProvider();
+
+                byte[] inputByteArray = new byte[decrypt.Length / 2];
+                for (int x = 0; x < decrypt.Length / 2; x++)
+                {
+                    int i = (Convert.ToInt32(decrypt.Substring(x * 2, 2), 16));
+                    inputByteArray[x] = (byte)i;
+                }
+                oDESCryptoServiceProvider.Key = ASCIIEncoding.ASCII.GetBytes(key);
+                oDESCryptoServiceProvider.IV = ASCIIEncoding.ASCII.GetBytes(key);
+                MemoryStream oMemoryStream = new MemoryStream();
+                CryptoStream oCryptoStream = new CryptoStream(oMemoryStream, oDESCryptoServiceProvider.CreateDecryptor(), CryptoStreamMode.Write);
+                oCryptoStream.Write(inputByteArray, 0, inputByteArray.Length);
+                oCryptoStream.FlushFinalBlock();
+                return Encoding.Default.GetString(oMemoryStream.ToArray());
+            }
+            catch (System.Exception ex)
+            {
+                LogSave.Add(ex.ToString());
+                return string.Empty;
+            }
+        }
+
+        public static Dictionary<string, object> BuildSign(Dictionary<string, object> dict, string clientSecret)
+        {
+            var result = new Dictionary<string, object>();
+            // 去除空值并排序
+            dict = dict.Where(d => d.Value != null)
+                .OrderBy(d => d.Key)
+                .ToDictionary((d) => d.Key, (d) => d.Value);
+            // 拼接
+            string signString = "";
+            // 反射处理非基本类型字段的json转换
+            string[] types = { "String", "DateTime", "Int64", "Boolean", "Float", "Double", "Long", "Int32" };
+            foreach (var item in dict.Keys.ToArray())
+            {
+                if (!types.Contains(dict[item]?.GetType().Name))
+                {
+                    dict[item] = JsonConvert.SerializeObject(dict[item]);
+                }
+                object value = null;
+                dict.TryGetValue(item, out value);
+                // 布尔值大写造成的签名错误
+                if (value.ToString().ToLower().Equals("false")) value = "false";
+                if (value.ToString().ToLower().Equals("true")) value = "true";
+                signString += item + value.ToString();
+                result.Add(item, value.ToString());
+            }
+            signString = clientSecret + signString + clientSecret;
+            Console.WriteLine("拼接内容:" + signString);
+            // MD5加密
+            using (var md5 = MD5.Create())
+            {
+                signString = GetMd5Hash(md5, signString).ToUpper();
+            }
+            Console.WriteLine("签名:" + signString);
+            result.Add("sign", signString);
+            return result;
+        }
+
+        static string GetMd5Hash(MD5 md5Hash, string input)
+        {
+            byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));
+            StringBuilder sBuilder = new StringBuilder();
+            for (int i = 0; i < data.Length; i++)
+            {
+                sBuilder.Append(data[i].ToString("x2"));
+            }
+            return sBuilder.ToString();
+        }
+
+    }
+}