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OAuth 2.0 SDK with OpenID Connection extensions for developing client and server applications.

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/*
 * oauth2-oidc-sdk
 *
 * Copyright 2012-2016, Connect2id Ltd and contributors.
 *
 * 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.nimbusds.oauth2.sdk.pkce;


import com.nimbusds.oauth2.sdk.auth.Secret;


/**
 * Authorisation code verifier.
 *
 * 

Related specifications: * *

    *
  • Proof Key for Code Exchange by OAuth Public Clients (RFC 7636). *
*/ public class CodeVerifier extends Secret { /** * The minimum character length of a code verifier. */ public static final int MIN_LENGTH = 43; /** * The maximum character length of a code verifier. */ public static final int MAX_LENGTH = 128; /** * Creates a new code verifier with the specified value. * * @param value The code verifier value. Must not contain characters * other than [A-Z] / [a-z] / [0-9] / "-" / "." / "_" / * "~". The verifier length must be at least 43 * characters but not more than 128 characters. Must not * be {@code null} or empty string. */ public CodeVerifier(final String value) { super(value); if (value.length() < MIN_LENGTH) { throw new IllegalArgumentException("The code verifier must be at least " + MIN_LENGTH + " characters"); } if (value.length() > MAX_LENGTH) { throw new IllegalArgumentException("The code verifier must not be longer than " + MAX_LENGTH + " characters"); } } /** * Generates a new code verifier represented by a secure random 256-bit * number that is Base64URL-encoded (as a 43 character string, which is * the {@link #MIN_LENGTH minimum character length} of a code * verifier). */ public CodeVerifier() { super(32); } @Override public boolean equals(final Object object) { return object instanceof CodeVerifier && super.equals(object); } }




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