| /* |
| * Copyright (c) 2000, 2012, 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. |
| */ |
| |
| /* |
| * |
| * (C) Copyright IBM Corp. 1999 All Rights Reserved. |
| * Copyright 1997 The Open Group Research Institute. All rights reserved. |
| */ |
| |
| package sun.security.krb5; |
| |
| import sun.security.krb5.EncryptionKey; |
| import sun.security.krb5.internal.*; |
| import sun.security.krb5.internal.crypto.*; |
| import java.io.IOException; |
| |
| class KrbSafe extends KrbAppMessage { |
| |
| private byte[] obuf; |
| private byte[] userData; |
| |
| public KrbSafe(byte[] userData, |
| Credentials creds, |
| EncryptionKey subKey, |
| KerberosTime timestamp, |
| SeqNumber seqNumber, |
| HostAddress saddr, |
| HostAddress raddr |
| ) throws KrbException, IOException { |
| EncryptionKey reqKey = null; |
| if (subKey != null) |
| reqKey = subKey; |
| else |
| reqKey = creds.key; |
| |
| obuf = mk_safe(userData, |
| reqKey, |
| timestamp, |
| seqNumber, |
| saddr, |
| raddr |
| ); |
| } |
| |
| public KrbSafe(byte[] msg, |
| Credentials creds, |
| EncryptionKey subKey, |
| SeqNumber seqNumber, |
| HostAddress saddr, |
| HostAddress raddr, |
| boolean timestampRequired, |
| boolean seqNumberRequired |
| ) throws KrbException, IOException { |
| |
| KRBSafe krb_safe = new KRBSafe(msg); |
| |
| EncryptionKey reqKey = null; |
| if (subKey != null) |
| reqKey = subKey; |
| else |
| reqKey = creds.key; |
| |
| userData = rd_safe( |
| krb_safe, |
| reqKey, |
| seqNumber, |
| saddr, |
| raddr, |
| timestampRequired, |
| seqNumberRequired, |
| creds.client |
| ); |
| } |
| |
| public byte[] getMessage() { |
| return obuf; |
| } |
| |
| public byte[] getData() { |
| return userData; |
| } |
| |
| private byte[] mk_safe(byte[] userData, |
| EncryptionKey key, |
| KerberosTime timestamp, |
| SeqNumber seqNumber, |
| HostAddress sAddress, |
| HostAddress rAddress |
| ) throws Asn1Exception, IOException, KdcErrException, |
| KrbApErrException, KrbCryptoException { |
| |
| Integer usec = null; |
| Integer seqno = null; |
| |
| if (timestamp != null) |
| usec = timestamp.getMicroSeconds(); |
| |
| if (seqNumber != null) { |
| seqno = seqNumber.current(); |
| seqNumber.step(); |
| } |
| |
| KRBSafeBody krb_safeBody = |
| new KRBSafeBody(userData, |
| timestamp, |
| usec, |
| seqno, |
| sAddress, |
| rAddress |
| ); |
| |
| byte[] temp = krb_safeBody.asn1Encode(); |
| Checksum cksum = new Checksum( |
| Checksum.SAFECKSUMTYPE_DEFAULT, |
| temp, |
| key, |
| KeyUsage.KU_KRB_SAFE_CKSUM |
| ); |
| |
| KRBSafe krb_safe = new KRBSafe(krb_safeBody, cksum); |
| |
| temp = krb_safe.asn1Encode(); |
| |
| return krb_safe.asn1Encode(); |
| } |
| |
| private byte[] rd_safe(KRBSafe krb_safe, |
| EncryptionKey key, |
| SeqNumber seqNumber, |
| HostAddress sAddress, |
| HostAddress rAddress, |
| boolean timestampRequired, |
| boolean seqNumberRequired, |
| PrincipalName cname |
| ) throws Asn1Exception, KdcErrException, |
| KrbApErrException, IOException, KrbCryptoException { |
| |
| byte[] temp = krb_safe.safeBody.asn1Encode(); |
| |
| if (!krb_safe.cksum.verifyKeyedChecksum(temp, key, |
| KeyUsage.KU_KRB_SAFE_CKSUM)) { |
| throw new KrbApErrException( |
| Krb5.KRB_AP_ERR_MODIFIED); |
| } |
| |
| check(krb_safe.safeBody.timestamp, |
| krb_safe.safeBody.usec, |
| krb_safe.safeBody.seqNumber, |
| krb_safe.safeBody.sAddress, |
| krb_safe.safeBody.rAddress, |
| seqNumber, |
| sAddress, |
| rAddress, |
| timestampRequired, |
| seqNumberRequired, |
| cname |
| ); |
| |
| return krb_safe.safeBody.userData; |
| } |
| } |