ServiceStack.WebRequestUtils.AddDigestAuth C# (CSharp) 메소드

        internal static void AddDigestAuth(this WebRequest client, string userName, string password, AuthenticationInfo authInfo)
        {
            // by adamfowleruk
            // See Client Request at http://en.wikipedia.org/wiki/Digest_access_authentication

            string ncUse = padNC(authInfo.nc);
            authInfo.nc++; // incrememnt for subsequent requests

            string ha1raw = userName + ":" + authInfo.realm + ":" + password;
            string ha1 = CalculateMD5Hash(ha1raw);


            string ha2raw = client.Method + ":" + client.RequestUri.PathAndQuery;
            string ha2 = CalculateMD5Hash(ha2raw);

            string md5rraw = ha1 + ":" + authInfo.nonce + ":" + ncUse + ":" + authInfo.cnonce + ":" + authInfo.qop + ":" + ha2;
            string response = CalculateMD5Hash(md5rraw);


            string header =
                "Digest username=\"" + userName + "\", realm=\"" + authInfo.realm + "\", nonce=\"" + authInfo.nonce + "\", uri=\"" +
                    client.RequestUri.PathAndQuery + "\", cnonce=\"" + authInfo.cnonce + "\", nc=" + ncUse + ", qop=\"" + authInfo.qop + "\", response=\"" + response +
                    "\", opaque=\"" + authInfo.opaque + "\"";

            client.Headers[HttpHeaders.Authorization] = header;

        }
#endif