public ECPoint RandomizeToken(AnonymousTokenState state, GenerateTokenResponseModel tokenResponse, ECPoint K)
{
var Q = _ecParameters.Curve.DecodePoint(Convert.FromBase64String(tokenResponse.SignedPoint));
var c = new BigInteger(Convert.FromBase64String(tokenResponse.ProofChallenge));
var z = new BigInteger(Convert.FromBase64String(tokenResponse.ProofResponse));
return(_initiator.RandomiseToken(_ecParameters, K, state.P, Q, c, z, state.r));
}
public ECPoint RandomizeToken(AnonymousTokenState state, GenerateTokenResponseModel tokenResponse, ECPublicKeyParameters K)
{
var Q = _ecParameters.Curve.DecodePoint(Hex.Decode(tokenResponse.QAsHex));
var c = new BigInteger(Hex.Decode(tokenResponse.ProofCAsHex));
var z = new BigInteger(Hex.Decode(tokenResponse.ProofZAsHex));
return(_initiator.RandomiseToken(_ecParameters, K, state.P, Q, c, z, state.r));
}
private async Task <ECPoint> GetPublicKeyAsync(GenerateTokenResponseModel tokenResponse)
{
string kid = tokenResponse.Kid;
var request = new HttpRequestMessage(HttpMethod.Get, OAuthConf.OAUTH2_ANONTOKEN_URL + "/atks");
var response = await new HttpClient().SendAsync(request);
if (!response.IsSuccessStatusCode)
{
throw new WebServiceHttpException(response, OAuthConf.OAUTH2_ANONTOKEN_URL + "/atks");
}
var anonTokenKeyStoreResponse = JsonConvert.DeserializeObject <AnonymousTokenKeyStoreResponseModel>(await response.Content.ReadAsStringAsync());
return(DecodePublicKey(anonTokenKeyStoreResponse.Keys.Single(k => k.Kid == kid)));
}
