给Wbi签名算法的Demo添加C#实现 (#719)
Co-authored-by: 社会易姐QwQ <45892418+SocialSisterYi@users.noreply.github.com>
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@ -115,7 +115,7 @@
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## Wbi签名算法实现Demo
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该 Demo 提供 [Python](#Python)、[JavaScript](#JavaScript)、[Golang](#Golang) 语言
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该 Demo 提供 [Python](#Python)、[JavaScript](#JavaScript)、[Golang](#Golang)、[C#](#CSharp) 语言
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### Python
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@ -422,60 +422,100 @@ func main() {
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fmt.Println(string(body))
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}
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```
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### Java
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需要 `hutool` 依赖
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### CSharp
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```java
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package com.example.demo;
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无需依赖外部库
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import cn.hutool.crypto.SecureUtil;
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```cs
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.Json.Nodes;
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import java.util.*;
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class Program
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{
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private static HttpClient _httpClient = new();
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public class WbiTest {
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private static final int[] mixinKeyEncTab = new int[]{
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46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,
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33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,
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61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,
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36, 20, 34, 44, 52
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private static readonly int[] MixinKeyEncTab =
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{
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46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49, 33, 9, 42, 19, 29, 28, 14, 39,
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12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40, 61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63,
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57, 62, 11, 36, 20, 34, 44, 52
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};
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public static String getMixinKey(String imgKey, String subKey) {
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String s = imgKey + subKey;
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StringBuilder key = new StringBuilder();
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for (int i = 0; i < 32; i++) {
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key.append(s.charAt(mixinKeyEncTab[i]));
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}
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return key.toString();
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//对 imgKey 和 subKey 进行字符顺序打乱编码
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private static string GetMixinKey(string orig)
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{
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return MixinKeyEncTab.Aggregate("", (s, i) => s + orig[i])[..32];
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}
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public static void main(String[] args) {
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String imgKey = "653657f524a547ac981ded72ea172057";
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String subKey = "6e4909c702f846728e64f6007736a338";
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String mixinKey = getMixinKey(imgKey, subKey);
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System.out.println(mixinKey);
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//72136226c6a73669787ee4fd02a74c27
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//{
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// foo: '114',
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// bar: '514',
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// zab: 1919810
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//}
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LinkedHashMap<String, Object> map = new LinkedHashMap<>();
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map.put("foo", "114");
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map.put("bar", "514");
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map.put("zab", 1919810);
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map.put("wts", System.currentTimeMillis() / 1000);
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StringJoiner param = new StringJoiner("&");
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//排序 + 拼接字符串
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map.entrySet().stream()
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.sorted(Map.Entry.comparingByKey())
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.forEach(entry -> param.add(entry.getKey() + "=" + entry.getValue().toString()));
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String s = param + mixinKey;
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String wbiSign = SecureUtil.md5(s);
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System.out.println(wbiSign);
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String finalParam = param + "&w_rid=" + wbiSign;
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System.out.println(finalParam);
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private static Dictionary<string, string> EncWbi(Dictionary<string, string> parameters, string imgKey,
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string subKey)
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{
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string mixinKey = GetMixinKey(imgKey + subKey);
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string currTime = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
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//添加 wts 字段
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parameters["wts"] = currTime;
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// 按照 key 重排参数
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parameters = parameters.OrderBy(p => p.Key).ToDictionary(p => p.Key, p => p.Value);
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//过滤 value 中的 "!'()*" 字符
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parameters = parameters.ToDictionary(
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kvp => kvp.Key,
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kvp => new string(kvp.Value.Where(chr => !"!'()*".Contains(chr)).ToArray())
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);
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// 序列化参数
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string query = new FormUrlEncodedContent(parameters).ReadAsStringAsync().Result;
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//计算 w_rid
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using MD5 md5 = MD5.Create();
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byte[] hashBytes = md5.ComputeHash(Encoding.UTF8.GetBytes(query + mixinKey));
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string wbiSign = BitConverter.ToString(hashBytes).Replace("-", "").ToLower();
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parameters["w_rid"] = wbiSign;
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return parameters;
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}
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// 获取最新的 img_key 和 sub_key
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private static async Task<(string, string)> GetWbiKeys()
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{
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HttpResponseMessage responseMessage = await _httpClient.SendAsync(new HttpRequestMessage
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{
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Method = HttpMethod.Get,
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RequestUri = new Uri("https://api.bilibili.com/x/web-interface/nav"),
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});
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JsonNode response = JsonNode.Parse(await responseMessage.Content.ReadAsStringAsync())!;
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string imgUrl = (string)response["data"]!["wbi_img"]!["img_url"]!;
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imgUrl = imgUrl.Split("/")[^1].Split(".")[0];
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string subUrl = (string)response["data"]!["wbi_img"]!["sub_url"]!;
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subUrl = subUrl.Split("/")[^1].Split(".")[0];
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return (imgUrl, subUrl);
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}
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public static async Task Main()
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{
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var (imgKey, subKey) = await GetWbiKeys();
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Dictionary<string, string> signedParams = EncWbi(
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parameters: new Dictionary<string, string>
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{
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{ "foo", "114" },
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{ "bar", "514" },
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{ "baz", "1919810" }
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},
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imgKey: imgKey,
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subKey: subKey
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);
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string query = await new FormUrlEncodedContent(signedParams).ReadAsStringAsync();
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Console.WriteLine(query);
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}
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}
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```
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输出内容为进行 Wbi 签名的后参数的 url query 形式
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```
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bar=514&baz=1919810&foo=114&wts=1687541921&w_rid=26e82b1b9b3a11dbb1807a9228a40d3b
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```
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