com.yubico.yubikit.fido.webauthn.AuthenticatorAssertionResponse Maven / Gradle / Ivy

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This module provides FIDO support for the YubiKit SDK.
There is a newer version: 2.7.0
/*
 * Copyright (C) 2020-2023 Yubico.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.yubico.yubikit.fido.webauthn;

import static com.yubico.yubikit.fido.webauthn.SerializationUtils.deserializeBytes;
import static com.yubico.yubikit.fido.webauthn.SerializationUtils.serializeBytes;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

import javax.annotation.Nullable;

public class AuthenticatorAssertionResponse extends AuthenticatorResponse {
    public static final String AUTHENTICATOR_DATA = "authenticatorData";
    public static final String SIGNATURE = "signature";
    public static final String USER_HANDLE = "userHandle";

    private final byte[] authenticatorData;
    private final byte[] signature;
    @Nullable
    private final byte[] userHandle;

    public AuthenticatorAssertionResponse(
            byte[] clientDataJson,
            byte[] authenticatorData,
            byte[] signature,
            @Nullable byte[] userHandle
    ) {
        super(clientDataJson);
        this.authenticatorData = authenticatorData;
        this.signature = signature;
        this.userHandle = userHandle;
    }

    public byte[] getAuthenticatorData() {
        return authenticatorData;
    }

    public byte[] getSignature() {
        return signature;
    }

    @Nullable
    public byte[] getUserHandle() {
        return userHandle;
    }

    @Override
    public Map toMap(SerializationType serializationType) {
        Map map = new HashMap<>();
        map.put(CLIENT_DATA_JSON, serializeBytes(getClientDataJson(), serializationType));
        map.put(AUTHENTICATOR_DATA, serializeBytes(authenticatorData, serializationType));
        map.put(SIGNATURE, serializeBytes(signature, serializationType));
        if (userHandle != null) {
            map.put(USER_HANDLE, serializeBytes(userHandle, serializationType));
        }
        return map;
    }

    public static AuthenticatorAssertionResponse fromMap(
            Map map,
            SerializationType serializationType
    ) {
        return new AuthenticatorAssertionResponse(
                deserializeBytes(Objects.requireNonNull(map.get(CLIENT_DATA_JSON)), serializationType),
                deserializeBytes(Objects.requireNonNull(map.get(AUTHENTICATOR_DATA)), serializationType),
                deserializeBytes(Objects.requireNonNull(map.get(SIGNATURE)), serializationType),
                deserializeBytes(map.get(USER_HANDLE), serializationType));
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        AuthenticatorAssertionResponse that = (AuthenticatorAssertionResponse) o;

        if (!Arrays.equals(authenticatorData, that.authenticatorData)) return false;
        if (!Arrays.equals(signature, that.signature)) return false;
        return Arrays.equals(userHandle, that.userHandle);
    }

    @Override
    public int hashCode() {
        int result = Arrays.hashCode(authenticatorData);
        result = 31 * result + Arrays.hashCode(signature);
        result = 31 * result + Arrays.hashCode(userHandle);
        return result;
    }
}