119 lines
4.3 KiB
Java
119 lines
4.3 KiB
Java
/*
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* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.jgss.krb5;
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import org.ietf.jgss.*;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.IOException;
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import java.io.ByteArrayOutputStream;
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/**
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* This class represents the new format of GSS MIC tokens, as specified
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* in RFC 4121
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*
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* MIC tokens = { 16-byte token-header | HMAC }
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* where HMAC is on { plaintext | 16-byte token-header }
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*
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* @author Seema Malkani
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*/
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class MicToken_v2 extends MessageToken_v2 {
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public MicToken_v2(Krb5Context context,
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byte[] tokenBytes, int tokenOffset, int tokenLen,
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MessageProp prop) throws GSSException {
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super(Krb5Token.MIC_ID_v2, context,
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tokenBytes, tokenOffset, tokenLen, prop);
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}
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public MicToken_v2(Krb5Context context, InputStream is, MessageProp prop)
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throws GSSException {
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super(Krb5Token.MIC_ID_v2, context, is, prop);
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}
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public void verify(byte[] data, int offset, int len) throws GSSException {
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if (!verifySign(data, offset, len))
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throw new GSSException(GSSException.BAD_MIC, -1,
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"Corrupt checksum or sequence number in MIC token");
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}
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public void verify(InputStream data) throws GSSException {
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byte[] dataBytes = null;
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try {
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dataBytes = new byte[data.available()];
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data.read(dataBytes);
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} catch (IOException e) {
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// Error reading application data
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throw new GSSException(GSSException.BAD_MIC, -1,
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"Corrupt checksum or sequence number in MIC token");
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}
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verify(dataBytes, 0, dataBytes.length);
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}
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public MicToken_v2(Krb5Context context, MessageProp prop,
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byte[] data, int pos, int len)
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throws GSSException {
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super(Krb5Token.MIC_ID_v2, context);
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// debug("Application data to MicToken verify is [" +
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// getHexBytes(data, pos, len) + "]\n");
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if (prop == null) prop = new MessageProp(0, false);
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genSignAndSeqNumber(prop, data, pos, len);
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}
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public MicToken_v2(Krb5Context context, MessageProp prop, InputStream data)
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throws GSSException, IOException {
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super(Krb5Token.MIC_ID_v2, context);
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byte[] dataBytes = new byte[data.available()];
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data.read(dataBytes);
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// debug("Application data to MicToken cons is [" +
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// getHexBytes(dataBytes) + "]\n");
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if (prop == null) prop = new MessageProp(0, false);
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genSignAndSeqNumber(prop, dataBytes, 0, dataBytes.length);
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}
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public byte[] encode() throws IOException {
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// XXX Fine tune this initial size
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ByteArrayOutputStream bos = new ByteArrayOutputStream(50);
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encode(bos);
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return bos.toByteArray();
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}
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public int encode(byte[] outToken, int offset) throws IOException {
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byte[] token = encode();
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System.arraycopy(token, 0, outToken, offset, token.length);
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return token.length;
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}
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public void encode(OutputStream os) throws IOException {
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encodeHeader(os);
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os.write(checksum);
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}
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}
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