public string ToQueryStringFragment(NameValueCollection additionalParameters, bool includeHMAC = true)
{
NameValueCollection nameValueCollection = new NameValueCollection();
if (this.KeyVersion > 1)
{
nameValueCollection.Add("pt", ((int)this.PayloadType).ToString(NumberFormatInfo.InvariantInfo));
}
else
{
CryptoKeyPayloadType payloadType = this.PayloadType;
if (payloadType != CryptoKeyPayloadType.SvmFeedbackEncryption)
{
throw new InvalidOperationException(string.Format("Key of type {0} is not supported by legacy payloads, Key version must be greater than 1", Enum.GetName(typeof(CryptoKeyPayloadType), this.PayloadType)));
}
AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType legacyPayloadType = AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType.SvmFeedback;
NameValueCollection nameValueCollection2 = nameValueCollection;
string name = "pt";
int num = (int)legacyPayloadType;
nameValueCollection2.Add(name, num.ToString(NumberFormatInfo.InvariantInfo));
}
nameValueCollection.Add("kv", this.KeyVersion.ToString(NumberFormatInfo.InvariantInfo));
nameValueCollection.Add("ts", this.UtcTimestamp.ToFileTimeUtc().ToString(NumberFormatInfo.InvariantInfo));
nameValueCollection.Add("iv", AuthkeyAuthenticationRequest.UrlEncodeBase64String(Convert.ToBase64String(this.InitializationVector)));
nameValueCollection.Add("authKey", AuthkeyAuthenticationRequest.UrlEncodeBase64String(Convert.ToBase64String(this.Payload)));
if (includeHMAC && this.MessageAuthenticationCode != null)
{
nameValueCollection.Add("hmac", AuthkeyAuthenticationRequest.UrlEncodeBase64String(Convert.ToBase64String(this.MessageAuthenticationCode)));
}
if (additionalParameters != null)
{
nameValueCollection.Add(additionalParameters);
}
return(AuthkeyAuthenticationRequest.ConstructQueryString(nameValueCollection));
}
public SignedUrl(NameValueCollection queryString)
{
this.KeyVersion = byte.Parse(queryString["kv"], NumberFormatInfo.InvariantInfo);
if (this.KeyVersion > 1)
{
this.PayloadType = (CryptoKeyPayloadType)int.Parse(queryString["pt"], NumberFormatInfo.InvariantInfo);
}
else
{
AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType legacyPayloadType = (AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType) int.Parse(queryString["pt"], NumberFormatInfo.InvariantInfo);
AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType legacyPayloadType2 = legacyPayloadType;
if (legacyPayloadType2 != AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType.SvmFeedback)
{
throw new SecurityException("failed to parse query string collection");
}
this.PayloadType = CryptoKeyPayloadType.SvmFeedbackEncryption;
}
this.UtcTimestamp = DateTime.FromFileTimeUtc(long.Parse(queryString["ts"], NumberFormatInfo.InvariantInfo));
this.InitializationVector = Convert.FromBase64String(AuthkeyAuthenticationRequest.UrlDecodeBase64String(queryString["iv"]));
this.Payload = Convert.FromBase64String(AuthkeyAuthenticationRequest.UrlDecodeBase64String(queryString["authKey"]));
this.MessageAuthenticationCode = Convert.FromBase64String(AuthkeyAuthenticationRequest.UrlDecodeBase64String(queryString["hmac"]));
}
