我按照以下说明进行操作http://dev.twitter.com/pages/auth#request-token http://dev.twitter.com/pages/auth#request-token，并开发了一个c#类来进行OAuth授权。我使用了页面上的参数，输出的签名基本字符串和签名与页面上的一致。所以我认为算法部分是正确的。然后我将参数替换为我的 Twitter 应用程序中的参数，但无法从 Twitter 服务获取请求令牌。响应数据为“无法验证 oauth 签名和令牌”。
这是我发送的请求（我使用 http，而不是 https 进行调试）：
POST http://api.twitter.com/oauth/request_token HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Authorization: OAuth oauth_callback="http%3A%2F%2Flocalhost%3A3005%2Fthe_dance%2Fprocess_callback%3Fservice_provider_id%3D11", oauth_consumer_key="GDdmIQH6jhtmLUypg82g", oauth_nonce="QP70eNmVz8jvdPevU3oJD2AfF7R7odC2XJcn4XlZJqk", oauth_signature_method="HMAC-SHA1", oauth_timestamp="1272323042", oauth_version="1.0", oauth_signagure="IP%2FEEoc4tKdiobM%2FKH5cPK69cJM%3D"
Host: api.twitter.com
Proxy-Connection: Keep-Alive
这是回应：
HTTP/1.1 401 Unauthorized
Connection: Keep-Alive
Connection: Proxy-Support
Content-Length: 44
Via: 1.1 APS-PRXY-09
Expires: Tue, 31 Mar 1981 05:00:00 GMT
Date: Fri, 08 Apr 2011 05:47:20 GMT
Content-Type: text/html; charset=utf-8
Server: hi
Proxy-Support: Session-Based-Authentication
Status: 401 Unauthorized
X-Transaction: 1302241640-40339-46793
Last-Modified: Fri, 08 Apr 2011 05:47:20 GMT
X-Runtime: 0.01519
Pragma: no-cache
X-Revision: DEV
Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0
Set-Cookie: k=207.46.55.29.1302241640766556; path=/; expires=Fri, 15-Apr-11 05:47:20 GMT; domain=.twitter.com
Set-Cookie: guest_id=13022416407746962; path=/; expires=Sun, 08 May 2011 05:47:20 GMT
Set-Cookie: _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCEiBpjMvAToHaWQiJWMzMTViOGZiNDkzMDRi%250ANjNhMmQwYmVkZDBhNTc2NTc4IgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--177afd5c0f6fe30005ab9a9412e6f85ab03cbfa7; domain=.twitter.com; path=/; HttpOnly
Vary: Accept-Encoding
Failed to validate oauth signature and token
这就是我生成标准化参数的方法：
string.Join("&", (from d in this.BuildParameterDict()
select string.Format("{0}={1}", OAuthEncoding.Encode(d.Key), OAuthEncoding.Encode(d.Value))))
The 构建参数字典方法将排序构建一个列表，其中：来自查询字符串的参数；来自身体的参数；特定于“oauth”的参数，“oauth_signature”除外。
然后通过以下方式生成签名基字符串：
StringBuilder sb = new StringBuilder();
sb.Append(OAuthEncoding.Encode(this._request.Method));
sb.Append('&');
sb.Append(OAuthEncoding.Encode(this.GetNormalUri()));
sb.Append('&');
sb.Append(OAuthEncoding.Encode(this.GetNormalParameters()));
这是使用上面页面中的参数生成的基本字符串：
POST&https%3A%2F%2Fapi.twitter.com%2Foauth%2Frequest_token&oauth_callback%3Dhttp%253A%252F%252Flocalhost%253A3005%252Fthe_dance%252Fprocess_callback%253Fservice_provider_id%253D11%26oauth_consumer_key%3DGDdm IQH6jhtmLUypg82g%26oauth_nonce%3DQP70eNmVz8jvdPevU3oJD2AfF7R7odC2XJcn4XlZJqk%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp% 3D1272323042%26oauth_version%3D1.0
它与该页面上的字符串相同。
