Java tutorial
/* * Copyright 2004 - 2013 Wayne Grant * 2013 - 2016 Kai Kramer * * This file is part of KeyStore Explorer. * * KeyStore Explorer is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * KeyStore Explorer is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with KeyStore Explorer. If not, see <http://www.gnu.org/licenses/>. */ package net.sf.keystore_explorer.crypto.x509; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.bouncycastle.asn1.ASN1Encodable; import org.bouncycastle.asn1.ASN1EncodableVector; import org.bouncycastle.asn1.ASN1Primitive; import org.bouncycastle.asn1.ASN1Sequence; import org.bouncycastle.asn1.DERSequence; import org.bouncycastle.asn1.x509.GeneralSubtree; /** * Implements <code>GeneralSubtrees</code> from RFC 5280: * <pre> * GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree * </pre> * */ public class GeneralSubtrees implements ASN1Encodable { private List<GeneralSubtree> subtrees; /** * Create <code>GeneralSubtrees</code> from list of <code>GeneralSubtree</code> * objects. * * @param subtrees */ public GeneralSubtrees(List<GeneralSubtree> subtrees) { this.subtrees = subtrees; } /** * Create <code>GeneralSubtrees</code> from array of <code>GeneralSubtree</code> * objects. * * @param subtrees */ public GeneralSubtrees(GeneralSubtree[] subtrees) { this.subtrees = new ArrayList<GeneralSubtree>(Arrays.asList(subtrees)); } private GeneralSubtrees(ASN1Sequence seq) { subtrees = new ArrayList<GeneralSubtree>(); for (int i = 0; i < seq.size(); i++) { subtrees.add(GeneralSubtree.getInstance(seq.getObjectAt(i))); } } public static GeneralSubtrees getInstance(Object obj) { if (obj instanceof GeneralSubtrees) { return (GeneralSubtrees) obj; } if (obj instanceof ASN1Sequence) { return new GeneralSubtrees((ASN1Sequence) obj); } throw new IllegalArgumentException("invalid ASN1Sequence"); } public List<GeneralSubtree> getGeneralSubtrees() { return subtrees; } @Override public ASN1Primitive toASN1Primitive() { ASN1EncodableVector vec = new ASN1EncodableVector(); for (int i = 0; i < subtrees.size(); i++) { vec.add(subtrees.get(i)); } return new DERSequence(vec); } }