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package sun.security.jgss.krb5;

import org.ietf.jgss.*;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.io.ByteArrayOutputStream;

This class represents the new format of GSS MIC tokens, as specified in RFC 4121 MIC tokens = { 16-byte token-header | HMAC } where HMAC is on { plaintext | 16-byte token-header }
Author:Seema Malkani
/** * This class represents the new format of GSS MIC tokens, as specified * in RFC 4121 * * MIC tokens = { 16-byte token-header | HMAC } * where HMAC is on { plaintext | 16-byte token-header } * * @author Seema Malkani */
class MicToken_v2 extends MessageToken_v2 { public MicToken_v2(Krb5Context context, byte[] tokenBytes, int tokenOffset, int tokenLen, MessageProp prop) throws GSSException { super(Krb5Token.MIC_ID_v2, context, tokenBytes, tokenOffset, tokenLen, prop); } public MicToken_v2(Krb5Context context, InputStream is, MessageProp prop) throws GSSException { super(Krb5Token.MIC_ID_v2, context, is, prop); } public void verify(byte[] data, int offset, int len) throws GSSException { if (!verifySign(data, offset, len)) throw new GSSException(GSSException.BAD_MIC, -1, "Corrupt checksum or sequence number in MIC token"); } public void verify(InputStream data) throws GSSException { byte[] dataBytes = null; try { dataBytes = new byte[data.available()]; data.read(dataBytes); } catch (IOException e) { // Error reading application data throw new GSSException(GSSException.BAD_MIC, -1, "Corrupt checksum or sequence number in MIC token"); } verify(dataBytes, 0, dataBytes.length); } public MicToken_v2(Krb5Context context, MessageProp prop, byte[] data, int pos, int len) throws GSSException { super(Krb5Token.MIC_ID_v2, context); // debug("Application data to MicToken verify is [" + // getHexBytes(data, pos, len) + "]\n"); if (prop == null) prop = new MessageProp(0, false); genSignAndSeqNumber(prop, data, pos, len); } public MicToken_v2(Krb5Context context, MessageProp prop, InputStream data) throws GSSException, IOException { super(Krb5Token.MIC_ID_v2, context); byte[] dataBytes = new byte[data.available()]; data.read(dataBytes); // debug("Application data to MicToken cons is [" + // getHexBytes(dataBytes) + "]\n"); if (prop == null) prop = new MessageProp(0, false); genSignAndSeqNumber(prop, dataBytes, 0, dataBytes.length); } public byte[] encode() throws IOException { // XXX Fine tune this initial size ByteArrayOutputStream bos = new ByteArrayOutputStream(50); encode(bos); return bos.toByteArray(); } public int encode(byte[] outToken, int offset) throws IOException { byte[] token = encode(); System.arraycopy(token, 0, outToken, offset, token.length); return token.length; } public void encode(OutputStream os) throws IOException { encodeHeader(os); os.write(checksum); } }