Java tutorial
/***** BEGIN LICENSE BLOCK ***** * Version: EPL 1.0/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Eclipse Public * License Version 1.0 (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.eclipse.org/legal/epl-v10.html * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * Copyright (C) 2008 Ola Bini <ola.bini@gmail.com> * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the EPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the EPL, the GPL or the LGPL. ***** END LICENSE BLOCK *****/ package org.jruby.ext.openssl.impl; import java.util.Enumeration; import org.bouncycastle.asn1.ASN1Encodable; import org.bouncycastle.asn1.ASN1EncodableVector; import org.bouncycastle.asn1.ASN1ObjectIdentifier; import org.bouncycastle.asn1.ASN1OctetString; import org.bouncycastle.asn1.ASN1Sequence; import org.bouncycastle.asn1.ASN1TaggedObject; import org.bouncycastle.asn1.DEROctetString; import org.bouncycastle.asn1.DERTaggedObject; import org.bouncycastle.asn1.DLSequence; import org.bouncycastle.asn1.x509.AlgorithmIdentifier; import org.jruby.util.ByteList; /** PKCS7_ENC_CONTENT * * @author <a href="mailto:ola.bini@gmail.com">Ola Bini</a> */ public class EncContent { /** * Describe contentType here. */ private int contentType; /** * Describe cipher here. */ private CipherSpec cipher; /** * Describe algorithm here. */ private AlgorithmIdentifier algorithm; /** * Describe encData here. */ private ASN1OctetString encData; /** * Get the <code>ContentType</code> value. * * @return an <code>int</code> value */ public final int getContentType() { return contentType; } /** * Set the <code>ContentType</code> value. * * @param newContentType The new ContentType value. */ public final void setContentType(final int newContentType) { this.contentType = newContentType; } /** * Get the <code>Cipher</code> value. * * @return a <code>Cipher</code> value */ public final CipherSpec getCipher() { return cipher; } /** * Set the <code>Cipher</code> value. * * @param newCipher The new Cipher value. */ public final void setCipher(final CipherSpec newCipher) { this.cipher = newCipher; } /** * Get the <code>Algorithm</code> value. * * @return an <code>AlgorithmIdentifier</code> value */ public final AlgorithmIdentifier getAlgorithm() { return algorithm; } /** * Set the <code>Algorithm</code> value. * * @param newAlgorithm The new Algorithm value. */ public final void setAlgorithm(final AlgorithmIdentifier newAlgorithm) { this.algorithm = newAlgorithm; } /** * Get the <code>EncData</code> value. * * @return an <code>ASN1OctetString</code> value */ public final ASN1OctetString getEncData() { return encData; } /** * Set the <code>EncData</code> value. * * @param newEncData The new EncData value. */ public final void setEncData(final ASN1OctetString newEncData) { this.encData = newEncData; } @Override public String toString() { return "#<EncContent contentType=" + contentType + " algorithm=" + (algorithm == null ? "null" : ASN1Registry.o2a(algorithm.getAlgorithm())) + " content=" + encData + ">"; } /** * EncryptedContentInfo ::= SEQUENCE { * contentType ContentType, * contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier, * encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL } * * EncryptedContent ::= OCTET STRING */ public static EncContent fromASN1(ASN1Encodable content) { ASN1Sequence sequence = (ASN1Sequence) content; ASN1ObjectIdentifier contentType = (ASN1ObjectIdentifier) (sequence.getObjectAt(0)); int nid = ASN1Registry.obj2nid(contentType); EncContent ec = new EncContent(); ec.setContentType(nid); ec.setAlgorithm(AlgorithmIdentifier.getInstance(sequence.getObjectAt(1))); if (sequence.size() > 2 && sequence.getObjectAt(2) instanceof ASN1TaggedObject && ((ASN1TaggedObject) (sequence.getObjectAt(2))).getTagNo() == 0) { ASN1Encodable ee = ((ASN1TaggedObject) (sequence.getObjectAt(2))).getObject(); if (ee instanceof ASN1Sequence && ((ASN1Sequence) ee).size() > 0) { ByteList combinedOctets = new ByteList(); Enumeration enm = ((ASN1Sequence) ee).getObjects(); while (enm.hasMoreElements()) { byte[] octets = ((ASN1OctetString) enm.nextElement()).getOctets(); combinedOctets.append(octets); } ec.setEncData(new DEROctetString(combinedOctets.bytes())); } else { ec.setEncData((ASN1OctetString) ee); } } return ec; } public ASN1Encodable asASN1() { ASN1EncodableVector vector = new ASN1EncodableVector(); vector.add(ASN1Registry.nid2obj(contentType).toASN1Primitive()); vector.add(algorithm.toASN1Primitive()); if (encData != null) { vector.add(new DERTaggedObject(false, 0, encData)); } return new DLSequence(vector); } }// EncContent