com.google.u2f.codec.ClientDataCodec.java Source code

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Here is the source code for com.google.u2f.codec.ClientDataCodec.java

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// Copyright 2014 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

package com.google.u2f.codec;

import com.google.gson.JsonObject;

public class ClientDataCodec {
    // Constants for ClientData.typ
    public static final String REQUEST_TYPE_REGISTER = "navigator.id.finishEnrollment";
    public static final String REQUEST_TYPE_AUTHENTICATE = "navigator.id.getAssertion";

    // Constants for building ClientData.challenge
    public static final String JSON_PROPERTY_REQUEST_TYPE = "typ";
    public static final String JSON_PROPERTY_SERVER_CHALLENGE_BASE64 = "challenge";
    public static final String JSON_PROPERTY_SERVER_ORIGIN = "origin";
    public static final String JSON_PROPERTY_CHANNEL_ID = "cid_pubkey";

    /** Computes ClientData.challenge */
    public static String encodeClientData(String requestType, String serverChallengeBase64, String origin,
            JsonObject jsonChannelId) {
        JsonObject browserData = new JsonObject();
        browserData.addProperty(JSON_PROPERTY_REQUEST_TYPE, requestType);
        browserData.addProperty(JSON_PROPERTY_SERVER_CHALLENGE_BASE64, serverChallengeBase64);
        browserData.add(JSON_PROPERTY_CHANNEL_ID, jsonChannelId);
        browserData.addProperty(JSON_PROPERTY_SERVER_ORIGIN, origin);
        return browserData.toString();
    }
}