c# 对接第三方接口实现签名
官网文档要求如下：
Sign算法说明
举例：假设请求参数键值对如下
| appkey : test2-xx page_no : 0 end_time : 2016-08-01 13:00:00 start_time : 2016-08-01 12:00:00 page_size : 40 sid : test2 timestamp : 1470042310 |
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第一步 对数所有请求参数按照键名进行正序排序，排序结果如下，注意要保持键值对的对应关系且appsecret不参与运算。
| appkey : test2-xx end_time : 2016-08-01 13:00:00 page_no : 0 page_size : 40 sid : test2 start_time : 2016-08-01 12:00:00 timestamp : 1470042310 |
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第二步 循环对每个键值进行处理：
| 1.处理 appkey |
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第三步 计算sign
| 1.获取appsecret 假如当前实例中的 appsecret 为 12345 2.将appsecret拼接在第二步的结果后面，注意没有任何拼接符，结果如下：06-appkey:0008-test2-xx;08-end_time:0019-2016-08-01 13:00:00;07-page_no:0001-0;09-page_size:0002-40;03-sid:0005-test2;10-start_time:0019-2016-08-01 12:00:00;09-timestamp:0010-147004231012345 3.将上述字符串进行md5加密后即可得到sign，要求MD5方法返回的是32位小写的MD5值，计算结果如下： ad4e6fe037ea6e3ba4768317be9d1309 4.将计算的sign作为一个请求参数放到参数列表中 sid : test2 appkey : test2-xx timestamp : 1470042310 start_time : 2016-08-01 12:00:00 end_time : 2016-08-01 13:00:00 page_no : 0 page_size : 40 sign : ad4e6fe037ea6e3ba4768317be9d1309 |
using System.Drawing;
using System.Text;
using System;
using static System.Net.Mime.MediaTypeNames;
using System.Reflection;
using System.Xml;
using System.Collections.Generic;
using System.Xml.Linq;
using System.Linq;Console.Write("开始：");
UTF8LengthPadding.Main();
Console.ReadLine();public class UTF8LengthPadding
{public static void Main(){//秘钥string appsecret = "12345";//参数类Parm parm = new Parm();//存放参数数据的集合Dictionary<string, string> dic = new Dictionary<string, string>();//循环类 添加到集合中Type myEntityType = parm.GetType();PropertyInfo[] properties = myEntityType.GetProperties();foreach (PropertyInfo property in properties){string propertyName = property.Name;object propertyValue = property.GetValue(parm);dic.Add(propertyName, propertyValue.ToString());}//对key进行排序var sortedKeys = dic.OrderBy(kvp => kvp.Key).ToDictionary(kvp => kvp.Key);//拼接结果string prestr = "";//最终结果string finalStr = "";foreach (var item in sortedKeys.Keys){//key的长度int keyLength = item.Length;//不足两位补0string key = keyLength.ToString("00");//拼接prestr = prestr + key;//组装key值prestr = prestr + "-" + item + ":";//组装value长度string valueStr = dic[item];//value长度int valueLength = valueStr.Length;//不足四位补0string value = valueLength.ToString("0000");//拼接prestr = prestr + value;//组装valueprestr = prestr + "-" + valueStr + ";";}//去掉最后一个;if (prestr.Length > 0){prestr = prestr.Substring(0, prestr.Length - 1);}//第三步 计算sign md5加密后,返回的是32位小写的MD5值finalStr = prestr + appsecret;Console.WriteLine(finalStr); // 输出Console.WriteLine(GetMD5_32(finalStr)); // 输出}/// <summary>/// 获得32位的MD5加密/// </summary>/// <param name="input"></param>/// <returns></returns>public static string GetMD5_32(string input){System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create();byte[] data = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(input));StringBuilder sb = new StringBuilder();for (int i = 0; i < data.Length; i++){sb.Append(data[i].ToString("x2"));}return sb.ToString();}
}public class Parm
{public string appkey { get; set; } = "test2-xx";public string page_no { get; set; } = "0";public string end_time { get; set; } = "2016-08-01 13:00:00";public string start_time { get; set; } = "2016-08-01 12:00:00";public string page_size { get; set; } = "40";public string sid { get; set; } = "test2";public string timestamp { get; set; } = "1470042310";
}