| /* |
| * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.pkcs12; |
| |
| import java.io.*; |
| import java.security.*; |
| |
| import sun.security.util.DerInputStream; |
| import sun.security.util.DerOutputStream; |
| import sun.security.util.DerValue; |
| import sun.security.x509.AlgorithmId; |
| import sun.security.pkcs.ParsingException; |
| |
| |
| /** |
| * A MacData type, as defined in PKCS#12. |
| * |
| * @author Sharon Liu |
| */ |
| |
| class MacData { |
| |
| private String digestAlgorithmName; |
| private AlgorithmParameters digestAlgorithmParams; |
| private byte[] digest; |
| private byte[] macSalt; |
| private int iterations; |
| |
| // the ASN.1 encoded contents of this class |
| private byte[] encoded = null; |
| |
| /** |
| * Parses a PKCS#12 MAC data. |
| */ |
| MacData(DerInputStream derin) |
| throws IOException, ParsingException |
| { |
| DerValue[] macData = derin.getSequence(2); |
| |
| // Parse the digest info |
| DerInputStream digestIn = new DerInputStream(macData[0].toByteArray()); |
| DerValue[] digestInfo = digestIn.getSequence(2); |
| |
| // Parse the DigestAlgorithmIdentifier. |
| AlgorithmId digestAlgorithmId = AlgorithmId.parse(digestInfo[0]); |
| this.digestAlgorithmName = digestAlgorithmId.getName(); |
| this.digestAlgorithmParams = digestAlgorithmId.getParameters(); |
| // Get the digest. |
| this.digest = digestInfo[1].getOctetString(); |
| |
| // Get the salt. |
| this.macSalt = macData[1].getOctetString(); |
| |
| // Iterations is optional. The default value is 1. |
| if (macData.length > 2) { |
| this.iterations = macData[2].getInteger(); |
| } else { |
| this.iterations = 1; |
| } |
| } |
| |
| MacData(String algName, byte[] digest, byte[] salt, int iterations) |
| throws NoSuchAlgorithmException |
| { |
| if (algName == null) |
| throw new NullPointerException("the algName parameter " + |
| "must be non-null"); |
| |
| AlgorithmId algid = AlgorithmId.get(algName); |
| this.digestAlgorithmName = algid.getName(); |
| this.digestAlgorithmParams = algid.getParameters(); |
| |
| if (digest == null) { |
| throw new NullPointerException("the digest " + |
| "parameter must be non-null"); |
| } else if (digest.length == 0) { |
| throw new IllegalArgumentException("the digest " + |
| "parameter must not be empty"); |
| } else { |
| this.digest = digest.clone(); |
| } |
| |
| this.macSalt = salt; |
| this.iterations = iterations; |
| |
| // delay the generation of ASN.1 encoding until |
| // getEncoded() is called |
| this.encoded = null; |
| |
| } |
| |
| MacData(AlgorithmParameters algParams, byte[] digest, |
| byte[] salt, int iterations) throws NoSuchAlgorithmException |
| { |
| if (algParams == null) |
| throw new NullPointerException("the algParams parameter " + |
| "must be non-null"); |
| |
| AlgorithmId algid = AlgorithmId.get(algParams); |
| this.digestAlgorithmName = algid.getName(); |
| this.digestAlgorithmParams = algid.getParameters(); |
| |
| if (digest == null) { |
| throw new NullPointerException("the digest " + |
| "parameter must be non-null"); |
| } else if (digest.length == 0) { |
| throw new IllegalArgumentException("the digest " + |
| "parameter must not be empty"); |
| } else { |
| this.digest = digest.clone(); |
| } |
| |
| this.macSalt = salt; |
| this.iterations = iterations; |
| |
| // delay the generation of ASN.1 encoding until |
| // getEncoded() is called |
| this.encoded = null; |
| |
| } |
| |
| String getDigestAlgName() { |
| return digestAlgorithmName; |
| } |
| |
| byte[] getSalt() { |
| return macSalt; |
| } |
| |
| int getIterations() { |
| return iterations; |
| } |
| |
| byte[] getDigest() { |
| return digest; |
| } |
| |
| /** |
| * Returns the ASN.1 encoding of this object. |
| * @return the ASN.1 encoding. |
| * @exception IOException if error occurs when constructing its |
| * ASN.1 encoding. |
| */ |
| public byte[] getEncoded() throws NoSuchAlgorithmException, IOException |
| { |
| if (this.encoded != null) |
| return this.encoded.clone(); |
| |
| DerOutputStream out = new DerOutputStream(); |
| DerOutputStream tmp = new DerOutputStream(); |
| |
| DerOutputStream tmp2 = new DerOutputStream(); |
| // encode encryption algorithm |
| AlgorithmId algid = AlgorithmId.get(digestAlgorithmName); |
| algid.encode(tmp2); |
| |
| // encode digest data |
| tmp2.putOctetString(digest); |
| |
| tmp.write(DerValue.tag_Sequence, tmp2); |
| |
| // encode salt |
| tmp.putOctetString(macSalt); |
| |
| // encode iterations |
| tmp.putInteger(iterations); |
| |
| // wrap everything into a SEQUENCE |
| out.write(DerValue.tag_Sequence, tmp); |
| this.encoded = out.toByteArray(); |
| |
| return this.encoded.clone(); |
| } |
| |
| } |