在HTTP请求c#的Authorization标头中获取签名的OAuth请求

using System;
using System.Net.Http;
using System.Security.Cryptography;
using System.Text;

class Program
{
    static void Main()
    {
        // 创建HttpClient实例
        HttpClient client = new HttpClient();

        // 设置OAuth参数
        string consumerKey = "your_consumer_key";
        string consumerSecret = "your_consumer_secret";
        string nonce = Guid.NewGuid().ToString();
        string timestamp = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
        string signatureMethod = "HMAC-SHA1";
        string version = "1.0";

        // 生成签名
        string signature = GenerateSignature(consumerSecret, nonce, timestamp, signatureMethod, version);

        // 添加Authorization标头
        string authorizationHeader = $"OAuth oauth_consumer_key=\"{consumerKey}\", oauth_nonce=\"{nonce}\", oauth_signature_method=\"{signatureMethod}\", oauth_timestamp=\"{timestamp}\", oauth_version=\"{version}\", oauth_signature=\"{signature}\"";
        client.DefaultRequestHeaders.Add("Authorization", authorizationHeader);

        // 发送HTTP请求
        HttpResponseMessage response = client.GetAsync("your_request_url").Result;
        string responseBody = response.Content.ReadAsStringAsync().Result;
        Console.WriteLine(responseBody);
    }

    static string GenerateSignature(string consumerSecret, string nonce, string timestamp, string signatureMethod, string version)
    {
        string baseString = $"oauth_consumer_key={consumerKey}&oauth_nonce={nonce}&oauth_signature_method={signatureMethod}&oauth_timestamp={timestamp}&oauth_version={version}";

        // 使用HMAC-SHA1算法计算签名
        using (HMACSHA1 hmac = new HMACSHA1(Encoding.ASCII.GetBytes(consumerSecret)))
        {
            byte[] hashBytes = hmac.ComputeHash(Encoding.ASCII.GetBytes(baseString));
            return Convert.ToBase64String(hashBytes);
        }
    }
}