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Core API and generic implementation of JSON Web Token (JWT) based authentication

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/**
 * Copyright (C) Telicent Ltd
 *
 * 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 io.telicent.servlet.auth.jwt;

/**
 * OAuth2 related constants
 */
public class OAuth2Constants {

    private OAuth2Constants() {
    }

    /**
     * Error code for invalid tokens
     */
    public static final String ERROR_INVALID_TOKEN = "invalid_token";
    /**
     * Error code for invalid requests
     */
    public static final String ERROR_INVALID_REQUEST = "invalid_request";

    /**
     * Challenge parameter used in HTTP Bearer Auth challenges to indicate a particular error state per RFC 6750
     */
    public static final String CHALLENGE_PARAMETER_ERROR = "error";
    /**
     * Challenge parameter used in HTTP Bearer Auth challenges to provide a detailed error description per RFC 6750
     */
    public static final String CHALLENGE_PARAMETER_ERROR_DESCRIPTION = "error_description";
}