1 /* 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.security.cert; 27 28 /** 29 * <p>Performs one or more checks on each {@code Certificate} of a 30 * {@code CertPath}. 31 * 32 * <p>A {@code CertPathChecker} implementation is typically created to extend 33 * a certification path validation algorithm. For example, an implementation 34 * may check for and process a critical private extension of each certificate 35 * in a certification path. 36 * 37 * @since 1.8 38 */ 39 public interface CertPathChecker { 40 41 /** 42 * Initializes the internal state of this {@code CertPathChecker}. 43 * 44 * <p>The {@code forward} flag specifies the order that certificates will 45 * be passed to the {@link #check check} method (forward or reverse). 46 * 47 * @param forward the order that certificates are presented to the 48 * {@code check} method. If {@code true}, certificates are 49 * presented from target to trust anchor (forward); if 50 * {@code false}, from trust anchor to target (reverse). 51 * @throws CertPathValidatorException if this {@code CertPathChecker} is 52 * unable to check certificates in the specified order 53 */ 54 void init(boolean forward) throws CertPathValidatorException; 55 56 /** 57 * Indicates if forward checking is supported. Forward checking refers 58 * to the ability of the {@code CertPathChecker} to perform its checks 59 * when certificates are presented to the {@code check} method in the 60 * forward direction (from target to trust anchor). 61 * 62 * @return {@code true} if forward checking is supported, {@code false} 63 * otherwise 64 */ 65 boolean isForwardCheckingSupported(); 66 67 /** 68 * Performs the check(s) on the specified certificate using its internal 69 * state. The certificates are presented in the order specified by the 70 * {@code init} method. 71 * 72 * @param cert the {@code Certificate} to be checked 73 * @throws CertPathValidatorException if the specified certificate does 74 * not pass the check 75 */ 76 void check(Certificate cert) throws CertPathValidatorException; 77 } 78
