| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.harmony.security.x509; |
| |
| import java.io.IOException; |
| import org.apache.harmony.security.asn1.ASN1BitString; |
| import org.apache.harmony.security.asn1.ASN1Type; |
| |
| /** |
| * Key Usage Extension (OID = 2.5.29.15). |
| * |
| * The ASN.1 definition for Key Usage Extension is: |
| * |
| * <pre> |
| * id-ce-keyUsage OBJECT IDENTIFIER ::= { id-ce 15 } |
| * |
| * KeyUsage ::= BIT STRING { |
| * digitalSignature (0), |
| * nonRepudiation (1), |
| * keyEncipherment (2), |
| * dataEncipherment (3), |
| * keyAgreement (4), |
| * keyCertSign (5), |
| * cRLSign (6), |
| * encipherOnly (7), |
| * decipherOnly (8) |
| * } |
| * </pre> |
| * (as specified in RFC 3280 http://www.ietf.org/rfc/rfc3280.txt) |
| */ |
| public final class KeyUsage extends ExtensionValue { |
| |
| /** The names of the usages. */ |
| private static final String[] USAGES = { |
| "digitalSignature", |
| "nonRepudiation", |
| "keyEncipherment", |
| "dataEncipherment", |
| "keyAgreement", |
| "keyCertSign", |
| "cRLSign", |
| "encipherOnly", |
| "decipherOnly", |
| }; |
| |
| /** the value of extension */ |
| private final boolean[] keyUsage; |
| |
| /** |
| * Creates the extension object on the base of its encoded form. |
| */ |
| public KeyUsage(byte[] encoding) throws IOException { |
| super(encoding); |
| this.keyUsage = (boolean[]) ASN1.decode(encoding); |
| } |
| |
| public boolean[] getKeyUsage() { |
| return keyUsage; |
| } |
| |
| @Override public byte[] getEncoded() { |
| if (encoding == null) { |
| encoding = ASN1.encode(keyUsage); |
| } |
| return encoding; |
| } |
| |
| @Override public void dumpValue(StringBuilder sb, String prefix) { |
| sb.append(prefix).append("KeyUsage [\n"); |
| for (int i = 0; i < keyUsage.length; i++) { |
| if (keyUsage[i]) { |
| sb.append(prefix).append(" ").append(USAGES[i]).append('\n'); |
| } |
| } |
| sb.append(prefix).append("]\n"); |
| } |
| |
| /** |
| * X.509 Extension value encoder/decoder. |
| */ |
| private static final ASN1Type ASN1 = new ASN1BitString.ASN1NamedBitList(9); |
| |
| } |