/// <summary>
/// Generates the hmac of an api request
/// </summary>
/// <param name="headers"> a Dictionary of headers</param>
/// <param name="path"> the path of this api </param>
/// <param name="content"> the content for this HMAC</param>
public Dictionary <String, String> sign(Dictionary <String, String> headers, String path, String content = "")
{
ApiAuthResponse authRequest = sign(headers["content-type"], null, path, System.Text.Encoding.ASCII.GetBytes(content));
headers["Content-MD5"] = authRequest.contentMD5;
headers["DATE"] = authRequest.date;
headers["Authorization"] = authRequest.authoirisation;
// headers["debugAuth"] = authRequest._debugAuth;
return(headers);
}
public WebRequest sign(WebRequest request, String path, String content)
{
ApiAuthResponse authRequest = sign(request.ContentType, request.Headers.Get("date"), path, System.Text.Encoding.ASCII.GetBytes(content));
request.Headers.Add("Content-MD5", authRequest.contentMD5);
//request.Headers.Add( "DATE",authRequest.date);
request.Headers.Add("Authorization", authRequest.authoirisation);
// request.Headers.Add("debugAuth", authRequest._debugAuth );
return(request);
}
public ApiAuthResponse sign(String contentType, String date, String path, Byte[] content)
{
//generate a hash of the content
MD5 content_hash_md5 = MD5.Create();
content_hash_md5.ComputeHash(content);
String content_hash = Convert.ToBase64String(content_hash_md5.Hash);
if (!String.IsNullOrEmpty(date))
{
DateTime _date = TimeZoneInfo.ConvertTimeToUtc(DateTime.Now);
date = _date.ToString("R");
}
String canonical_string = contentType + "," + content_hash + "," + path + "," + date;
byte[] canonical_bytes = System.Text.Encoding.ASCII.GetBytes(canonical_string);
HMACSHA1 hmacsha1 = new HMACSHA1(System.Text.Encoding.ASCII.GetBytes(this.secret));
hmacsha1.ComputeHash(canonical_bytes);
String hmac = Convert.ToBase64String(hmacsha1.Hash); //BitConverter.ToString(hmacsha1.Hash).Replace("-", String.Empty).ToLower();
ApiAuthResponse response = new ApiAuthResponse();
response.contentMD5 = content_hash;
response.date = date;
response.authoirisation = "APIAuth " + this.access_id + ":" + hmac;
//response._debugAuth = canonical_string;
return(response);
}
