mirror of
https://github.com/openjdk/jdk.git
synced 2025-08-26 14:24:46 +02:00
100 lines
3.1 KiB
Java
100 lines
3.1 KiB
Java
/*
|
|
* Copyright (c) 1998, 2023, 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 com.sun.crypto.provider;
|
|
|
|
import java.math.*;
|
|
import java.io.*;
|
|
import java.util.Arrays;
|
|
|
|
import sun.security.x509.AlgorithmId;
|
|
import sun.security.util.*;
|
|
|
|
|
|
/**
|
|
* This class implements the <code>PrivateKeyInfo</code> type,
|
|
* which is defined in PKCS #8 as follows:
|
|
*
|
|
* <pre>
|
|
* PrivateKeyInfo ::= SEQUENCE {
|
|
* version INTEGER,
|
|
* privateKeyAlgorithm AlgorithmIdentifier,
|
|
* privateKey OCTET STRING,
|
|
* attributes [0] IMPLICIT Attributes OPTIONAL }
|
|
* </pre>
|
|
*
|
|
* @author Jan Luehe
|
|
*/
|
|
final class PrivateKeyInfo {
|
|
|
|
// the version number defined by the PKCS #8 standard
|
|
private static final BigInteger VERSION = BigInteger.ZERO;
|
|
|
|
// the private-key algorithm
|
|
private final AlgorithmId algid;
|
|
|
|
// the private-key value
|
|
private final byte[] privkey;
|
|
|
|
/**
|
|
* Constructs a PKCS#8 PrivateKeyInfo from its ASN.1 encoding.
|
|
*/
|
|
PrivateKeyInfo(byte[] encoded) throws IOException {
|
|
DerValue val = new DerValue(encoded);
|
|
|
|
try {
|
|
if (val.tag != DerValue.tag_Sequence)
|
|
throw new IOException("private key parse error: not a sequence");
|
|
|
|
// version
|
|
BigInteger parsedVersion = val.data.getBigInteger();
|
|
if (!parsedVersion.equals(VERSION)) {
|
|
throw new IOException("version mismatch: (supported: " +
|
|
VERSION + ", parsed: " + parsedVersion);
|
|
}
|
|
|
|
// privateKeyAlgorithm
|
|
this.algid = AlgorithmId.parse(val.data.getDerValue());
|
|
|
|
// privateKey
|
|
this.privkey = val.data.getOctetString();
|
|
|
|
// OPTIONAL attributes not supported yet
|
|
} finally {
|
|
val.clear();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the private-key algorithm.
|
|
*/
|
|
AlgorithmId getAlgorithm() {
|
|
return this.algid;
|
|
}
|
|
|
|
public void clear() {
|
|
Arrays.fill(privkey, (byte)0);
|
|
}
|
|
}
|