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Posted to commits@directory.apache.org by dr...@apache.org on 2015/01/22 22:47:55 UTC

[16/45] directory-kerberos git commit: DIRKRB-149 New layout structure with the new name "Apache Kerby"

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorCode.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorCode.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorCode.java
new file mode 100644
index 0000000..43a0b07
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorCode.java
@@ -0,0 +1,128 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbEnum;
+
+public enum KrbErrorCode implements KrbEnum {
+    KDC_ERR_NONE(0, "No error"),
+    KDC_ERR_NAME_EXP(1, "Client's entry in database has expired"),
+    KDC_ERR_SERVICE_EXP(2, "Server's entry in database has expired"),
+    KDC_ERR_BAD_PVNO(3, "Requested protocol version number not supported"),
+    KDC_ERR_C_OLD_MAST_KVNO(4, "Client's key encrypted in old master key"),
+    KDC_ERR_S_OLD_MAST_KVNO(5, "Server's key encrypted in old master key"),
+    KDC_ERR_C_PRINCIPAL_UNKNOWN(6, "Client not found in Kerberos database"),
+    KDC_ERR_S_PRINCIPAL_UNKNOWN(7, "Server not found in Kerberos database"),
+    KDC_ERR_PRINCIPAL_NOT_UNIQUE(8, "Multiple principal entries in database"),
+    KDC_ERR_NULL_KEY(9, "The client or server has a null key"),
+    KDC_ERR_CANNOT_POSTDATE(10, "Ticket not eligible for postdating"),
+    KDC_ERR_NEVER_VALID(11, "Requested start time is later than end time"),
+    KDC_ERR_POLICY(12, "KDC policy rejects request"),
+    KDC_ERR_BADOPTION(13, "KDC cannot accommodate requested option"),
+    KDC_ERR_ETYPE_NOSUPP(14, "KDC has no support for encryption type"),
+    KDC_ERR_SUMTYPE_NOSUPP(15, "KDC has no support for checksum type"),
+    KDC_ERR_PADATA_TYPE_NOSUPP(16, "KDC has no support for padata type"),
+    KDC_ERR_TRTYPE_NOSUPP(17, "KDC has no support for transited type"),
+    KDC_ERR_CLIENT_REVOKED(18, "Clients credentials have been revoked"),
+    KDC_ERR_SERVICE_REVOKED(19, "Credentials for server have been revoked"),
+    KDC_ERR_TGT_REVOKED(20, "TGT has been revoked"),
+    KDC_ERR_CLIENT_NOTYET(21, "Client not yet valid; try again later"),
+    KDC_ERR_SERVICE_NOTYET(22, "Server not yet valid; try again later"),
+    KDC_ERR_KEY_EXPIRED(23, "Password has expired; change password to reset"),
+    KDC_ERR_PREAUTH_FAILED(24, "Pre-authentication information was invalid"),
+    KDC_ERR_PREAUTH_REQUIRED(25, "Additional pre-authentication required"),
+    KDC_ERR_SERVER_NOMATCH(26, "Requested server and ticket don't match"),
+    KDC_ERR_MUST_USE_USER2USER(27, "Server valid for user2user only"),
+    KDC_ERR_PATH_NOT_ACCEPTED(28, "KDC Policy rejects transited path"),
+    KDC_ERR_SVC_UNAVAILABLE(29, "A service is not available"),
+    KRB_AP_ERR_BAD_INTEGRITY(31, "Integrity check on decrypted field failed"),
+    KRB_AP_ERR_TKT_EXPIRED(32, "Ticket expired"),
+    KRB_AP_ERR_TKT_NYV(33, "Ticket not yet valid"),
+    KRB_AP_ERR_REPEAT(34, "Request is a replay"),
+    KRB_AP_ERR_NOT_US(35, "The ticket isn't for us"),
+    KRB_AP_ERR_BADMATCH(36, "Ticket and authenticator don't match"),
+    KRB_AP_ERR_SKEW(37, "Clock skew too great"),
+    KRB_AP_ERR_BADADDR(38, "Incorrect net address"),
+    KRB_AP_ERR_BADVERSION(39, "Protocol version mismatch"),
+    KRB_AP_ERR_MSG_TYPE(40, "Invalid msg type"),
+    KRB_AP_ERR_MODIFIED(41, "Message stream modified"),
+    KRB_AP_ERR_BADORDER(42, "Message out of order"),
+    KRB_AP_ERR_BADKEYVER(44, "Specified version of key is not available"),
+    KRB_AP_ERR_NOKEY(45, "Service key not available"),
+    KRB_AP_ERR_MUT_FAIL(46, "Mutual authentication failed"),
+    KRB_AP_ERR_BADDIRECTION(47, "Incorrect message direction"),
+    KRB_AP_ERR_METHOD(48, "Alternative authentication method required"),
+    KRB_AP_ERR_BADSEQ(49, "Incorrect sequence number in message"),
+    KRB_AP_ERR_INAPP_CKSUM(50, "Inappropriate type of checksum in message"),
+    KRB_AP_PATH_NOT_ACCEPTED(51, "Policy rejects transited path"),
+    RESPONSE_TOO_BIG(52, "Response too big for UDP; retry with TCP"),
+    KRB_ERR_GENERIC(60, "Generic error (description in e-text)"),
+    FIELD_TOOLONG(61, "Field is too long for this implementation"),
+    KDC_ERR_CLIENT_NOT_TRUSTED(62, "Client is not trusted"),
+    KDC_NOT_TRUSTED(63, "KDC is not trusted"),
+    KDC_ERR_INVALID_SIG(64, "Signature is invalid"),
+    KDC_ERR_DH_KEY_PARAMETERS_NOT_ACCEPTED(65, "Diffie-Hellman (DH) key parameters not accepted."),
+    CERTIFICATE_MISMATCH(66, "Certificates do not match"),
+    KRB_AP_ERR_NO_TGT(67, "No TGT available to validate USER-TO-USER"),
+    WRONG_REALM(68, "Wrong realm"),
+    KRB_AP_ERR_USER_TO_USER_REQUIRED(69, "Ticket must be for USER-TO-USER"),
+    KDC_ERR_CANT_VERIFY_CERTIFICATE(70, "Can't verify certificate"),
+    KDC_ERR_INVALID_CERTIFICATE(71, "Invalid certificate"),
+    KDC_ERR_REVOKED_CERTIFICATE(72, "Revoked certificate"),
+    KDC_ERR_REVOCATION_STATUS_UNKNOWN(73, "Revocation status unknown"),
+    REVOCATION_STATUS_UNAVAILABLE(74, "Revocation status unavailable"),
+    KDC_ERR_CLIENT_NAME_MISMATCH(75, "Client names do not match"),
+    KDC_NAME_MISMATCH(76, "KDC names do not match"),
+    KDC_ERR_INCONSISTENT_KEY_PURPOSE(77, "Inconsistent key purpose"),
+    KDC_ERR_DIGEST_IN_CERT_NOT_ACCEPTED(78, "Digest in certificate not accepted"),
+    KDC_ERR_PA_CHECKSUM_MUST_BE_INCLUDED(79, "PA checksum must be included"),
+    KDC_ERR_DIGEST_IN_SIGNED_DATA_NOT_ACCEPTED(80, "Digest in signed data not accepted"),
+    KDC_ERR_PUBLIC_KEY_ENCRYPTION_NOT_SUPPORTED(81, "Public key encryption not supported"),
+
+    KRB_TIMEOUT(5000, "Network timeout");
+
+    private final int value;
+    private final String message;
+
+    private KrbErrorCode(int value, String message) {
+        this.value = value;
+        this.message = message;
+    }
+
+    public static KrbErrorCode fromValue(Integer value) {
+        if (value != null) {
+            for (KrbEnum e : values()) {
+                if (e.getValue() == value.intValue()) {
+                    return (KrbErrorCode) e;
+                }
+            }
+        }
+
+        return KRB_ERR_GENERIC;
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorException.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorException.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorException.java
new file mode 100644
index 0000000..e2c2658
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbErrorException.java
@@ -0,0 +1,35 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb;
+
+import org.apache.kerby.kerberos.kerb.spec.common.KrbError;
+
+public class KrbErrorException extends KrbException {
+    private KrbError krbError;
+
+    public KrbErrorException(KrbError krbError) {
+        super(krbError.getErrorCode().getMessage());
+        this.krbError = krbError;
+    }
+
+    public KrbError getKrbError() {
+        return krbError;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbException.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbException.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbException.java
new file mode 100644
index 0000000..878e264
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/KrbException.java
@@ -0,0 +1,43 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb;
+
+public class KrbException extends Exception {
+
+    public KrbException(String message) {
+        super(message);
+    }
+
+    public KrbException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public KrbException(KrbErrorCode errorCode) {
+        super(errorCode.getMessage());
+    }
+
+    public KrbException(KrbErrorCode errorCode, Throwable cause) {
+        super(errorCode.getMessage(), cause);
+    }
+
+    public KrbException(KrbErrorCode errorCode, String message) {
+        super(message + " with error code: " + errorCode.name());
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/codec/KrbCodec.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/codec/KrbCodec.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/codec/KrbCodec.java
new file mode 100644
index 0000000..8204267
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/codec/KrbCodec.java
@@ -0,0 +1,93 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.codec;
+
+import org.apache.kerby.asn1.LimitedByteBuffer;
+import org.apache.kerby.asn1.type.AbstractAsn1Type;
+import org.apache.kerby.asn1.type.Asn1Type;
+import org.apache.kerby.kerberos.kerb.KrbException;
+import org.apache.kerby.kerberos.kerb.spec.ap.ApReq;
+import org.apache.kerby.kerberos.kerb.spec.common.KrbMessage;
+import org.apache.kerby.kerberos.kerb.spec.common.KrbMessageType;
+import org.apache.kerby.kerberos.kerb.spec.kdc.AsRep;
+import org.apache.kerby.kerberos.kerb.spec.kdc.AsReq;
+import org.apache.kerby.kerberos.kerb.spec.kdc.TgsRep;
+import org.apache.kerby.kerberos.kerb.spec.kdc.TgsReq;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+public class KrbCodec {
+
+    public static byte[] encode(Asn1Type krbObj) throws KrbException {
+        return krbObj.encode();
+    }
+
+    public static <T extends Asn1Type> T decode(byte[] content, Class<T> krbType) throws KrbException {
+        return decode(ByteBuffer.wrap(content), krbType);
+    }
+
+    public static <T extends Asn1Type> T decode(ByteBuffer content, Class<T> krbType) throws KrbException {
+        Asn1Type implObj = null;
+        try {
+            implObj = krbType.newInstance();
+        } catch (Exception e) {
+            throw new KrbException("Decoding failed", e);
+        }
+
+        try {
+            implObj.decode(content);
+        } catch (IOException e) {
+            throw new KrbException("Decoding failed", e);
+        }
+
+        return (T) implObj;
+    }
+
+    public static KrbMessage decodeMessage(ByteBuffer byteBuffer) throws IOException {
+        LimitedByteBuffer limitedBuffer = new LimitedByteBuffer(byteBuffer);
+        int tag = AbstractAsn1Type.readTag(limitedBuffer);
+        int tagNo = AbstractAsn1Type.readTagNo(limitedBuffer, tag);
+        int length = AbstractAsn1Type.readLength(limitedBuffer);
+        LimitedByteBuffer valueBuffer = new LimitedByteBuffer(limitedBuffer, length);
+
+        KrbMessage msg = null;
+        KrbMessageType msgType = KrbMessageType.fromValue(tagNo);
+        if (msgType == KrbMessageType.TGS_REQ) {
+            msg = new TgsReq();
+        } else if (msgType == KrbMessageType.AS_REP) {
+            msg = new AsRep();
+        } else if (msgType == KrbMessageType.AS_REQ) {
+            msg = new AsReq();
+        } else if (msgType == KrbMessageType.TGS_REP) {
+            msg = new TgsRep();
+        } else if (msgType == KrbMessageType.AP_REQ) {
+            msg = new ApReq();
+        } else if (msgType == KrbMessageType.AP_REP) {
+            msg = new ApReq();
+        } else {
+            throw new IOException("To be supported krb message type with tag: " + tag);
+        }
+        msg.decode(tag, tagNo, valueBuffer);
+
+        return msg;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosString.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosString.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosString.java
new file mode 100644
index 0000000..3078b72
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosString.java
@@ -0,0 +1,34 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import org.apache.kerby.asn1.type.Asn1GeneralString;
+
+/**
+ KerberosString  ::= GeneralString -- (IA5String)
+ */
+public class KerberosString extends Asn1GeneralString {
+    public KerberosString() {
+    }
+
+    public KerberosString(String value) {
+        super(value);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosStrings.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosStrings.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosStrings.java
new file mode 100644
index 0000000..ce1e79a
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosStrings.java
@@ -0,0 +1,43 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import java.util.List;
+
+public class KerberosStrings extends KrbSequenceOfType<KerberosString> {
+
+    public KerberosStrings() {
+        super();
+    }
+
+    public KerberosStrings(List<String> strings) {
+        super();
+        setValues(strings);
+    }
+
+    public void setValues(List<String> values) {
+        clear();
+        if (values != null) {
+            for (String value : values) {
+                addElement(new KerberosString(value));
+            }
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosTime.java
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diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosTime.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosTime.java
new file mode 100644
index 0000000..3614253
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KerberosTime.java
@@ -0,0 +1,118 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import org.apache.kerby.asn1.type.Asn1GeneralizedTime;
+
+import java.util.Date;
+import java.util.TimeZone;
+
+/**
+ KerberosTime    ::= GeneralizedTime -- with no fractional seconds
+ */
+public class KerberosTime extends Asn1GeneralizedTime {
+    private static final TimeZone UTC = TimeZone.getTimeZone("UTC");
+
+    public static final KerberosTime NEVER = new KerberosTime(Long.MAX_VALUE);
+
+    public static final int MINUTE = 60000;
+
+    public static final int DAY = MINUTE * 1440;
+
+    public static final int WEEK = MINUTE * 10080;
+
+    public KerberosTime() {
+        super(0L);
+    }
+
+    /**
+     * time in milliseconds
+     */
+    public KerberosTime(long time) {
+        super(time);
+    }
+
+    /**
+     * Return time in milliseconds
+     */
+    public long getTime() {
+        if (getValue() != null) {
+            return getValue().getTime();
+        }
+        return 0L;
+    }
+
+    /**
+     * time in milliseconds
+     */
+    public void setTime(long time) {
+        setValue(new Date(time));
+    }
+
+    public long getTimeInSeconds() {
+        return getTime() / 1000;
+    }
+
+    public boolean lessThan(KerberosTime ktime) {
+        return getValue().compareTo(ktime.getValue()) < 0;
+    }
+
+    public boolean lessThan(long time) {
+        return getValue().getTime() <= time * 1000;
+    }
+
+    public boolean greaterThan(KerberosTime ktime) {
+        return getValue().compareTo(ktime.getValue()) > 0;
+    }
+
+    /**
+     * time in milliseconds
+     */
+    public boolean isInClockSkew(long clockSkew) {
+        long delta = Math.abs(getTime() - System.currentTimeMillis());
+
+        return delta < clockSkew;
+    }
+
+    public KerberosTime copy() {
+        long time = getTime();
+        KerberosTime result = new KerberosTime(time);
+        return result;
+    }
+
+    /**
+     * time in milliseconds
+     */
+    public KerberosTime extend(long duration) {
+        long result = getTime() + duration;
+        return new KerberosTime(result);
+    }
+
+    /**
+     * Return diff time in milliseconds
+     */
+    public long diff(KerberosTime other) {
+        return getTime() - other.getTime();
+    }
+
+    public static KerberosTime now() {
+        return new KerberosTime(new Date().getTime());
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbAppSequenceType.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbAppSequenceType.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbAppSequenceType.java
new file mode 100644
index 0000000..bee83da
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbAppSequenceType.java
@@ -0,0 +1,57 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.TaggingSequence;
+
+/**
+ * This is for application specific sequence tagged with a number.
+ */
+public abstract class KrbAppSequenceType extends TaggingSequence {
+    public KrbAppSequenceType(int tagNo, Asn1FieldInfo[] fieldInfos) {
+        super(tagNo, fieldInfos, true);
+    }
+
+    protected int getFieldAsInt(int index) {
+        Integer value = getFieldAsInteger(index);
+        if (value != null) {
+            return value.intValue();
+        }
+        return -1;
+    }
+
+    protected void setFieldAsString(int index, String value) {
+        setFieldAs(index, new KerberosString(value));
+    }
+
+    protected KerberosTime getFieldAsTime(int index) {
+        KerberosTime value = getFieldAs(index, KerberosTime.class);
+        return value;
+    }
+
+    protected void setFieldAsTime(int index, long value) {
+        setFieldAs(index, new KerberosTime(value));
+    }
+
+    protected void setField(int index, KrbEnum krbEnum) {
+        setFieldAsInt(index, krbEnum.getValue());
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbEnum.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbEnum.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbEnum.java
new file mode 100644
index 0000000..5eb184c
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbEnum.java
@@ -0,0 +1,24 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+public interface KrbEnum {
+    public int getValue();
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbIntegers.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbIntegers.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbIntegers.java
new file mode 100644
index 0000000..36fa3f2
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbIntegers.java
@@ -0,0 +1,54 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import org.apache.kerby.asn1.type.Asn1Integer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class KrbIntegers extends KrbSequenceOfType<Asn1Integer> {
+
+    public KrbIntegers() {
+        super();
+    }
+
+    public KrbIntegers(List<Integer> values) {
+        super();
+        setValues(values);
+    }
+
+    public void setValues(List<Integer> values) {
+        clear();
+        if (values != null) {
+            for (Integer value : values) {
+                addElement(new Asn1Integer(value));
+            }
+        }
+    }
+
+    public List<Integer> getValues() {
+        List<Integer> results = new ArrayList<Integer>();
+        for (Asn1Integer value : getElements()) {
+            results.add(value.getValue());
+        }
+        return results;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceOfType.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceOfType.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceOfType.java
new file mode 100644
index 0000000..c4ea121
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceOfType.java
@@ -0,0 +1,43 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import org.apache.kerby.asn1.type.Asn1SequenceOf;
+import org.apache.kerby.asn1.type.Asn1String;
+import org.apache.kerby.asn1.type.Asn1Type;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class KrbSequenceOfType<T extends Asn1Type> extends Asn1SequenceOf<T> {
+
+    public List<String> getAsStrings() {
+        List<T> elements = getElements();
+        List<String> results = new ArrayList<String>();
+        for (T ele : elements) {
+            if (ele instanceof Asn1String) {
+                results.add(((Asn1String) ele).getValue());
+            } else {
+                throw new RuntimeException("The targeted field type isn't of string");
+            }
+        }
+        return results;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceType.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceType.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceType.java
new file mode 100644
index 0000000..4cdb181
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/KrbSequenceType.java
@@ -0,0 +1,55 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1SequenceType;
+
+public abstract class KrbSequenceType extends Asn1SequenceType {
+
+    public KrbSequenceType(Asn1FieldInfo[] fieldInfos) {
+        super(fieldInfos);
+    }
+
+    protected int getFieldAsInt(int index) {
+        Integer value = getFieldAsInteger(index);
+        if (value != null) {
+            return value.intValue();
+        }
+        return -1;
+    }
+
+    protected void setFieldAsString(int index, String value) {
+        setFieldAs(index, new KerberosString(value));
+    }
+
+    protected KerberosTime getFieldAsTime(int index) {
+        KerberosTime value = getFieldAs(index, KerberosTime.class);
+        return value;
+    }
+
+    protected void setFieldAsTime(int index, long value) {
+        setFieldAs(index, new KerberosTime(value));
+    }
+
+    protected void setField(int index, KrbEnum value) {
+        setFieldAsInt(index, value.getValue());
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOption.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOption.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOption.java
new file mode 100644
index 0000000..4cd9e40
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOption.java
@@ -0,0 +1,58 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.ap;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbEnum;
+
+/**
+ APOptions       ::= KrbFlags
+ -- reserved(0),
+ -- use-session-key(1),
+ -- mutual-required(2)
+ */
+public enum ApOption implements KrbEnum {
+    NONE(-1),
+    RESERVED(0x80000000),
+    USE_SESSION_KEY(0x40000000),
+    MUTUAL_REQUIRED(0x20000000),
+    ETYPE_NEGOTIATION(0x00000002),
+    USE_SUBKEY(0x00000001);
+
+    private final int value;
+
+    private ApOption(int value) {
+        this.value = value;
+    }
+
+    @Override
+    public int getValue() {
+        return value;
+    }
+
+    public static ApOption fromValue(int value) {
+        for (KrbEnum e : values()) {
+            if (e.getValue() == value) {
+                return (ApOption) e;
+            }
+        }
+
+        return NONE;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOptions.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOptions.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOptions.java
new file mode 100644
index 0000000..17d69e1
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApOptions.java
@@ -0,0 +1,33 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.ap;
+
+import org.apache.kerby.kerberos.kerb.spec.common.KrbFlags;
+
+public class ApOptions extends KrbFlags {
+
+    public ApOptions() {
+        this(0);
+    }
+
+    public ApOptions(int value) {
+        setFlags(value);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApRep.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApRep.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApRep.java
new file mode 100644
index 0000000..8da7c7b
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApRep.java
@@ -0,0 +1,65 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.ap;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.kerberos.kerb.spec.common.KrbMessage;
+import org.apache.kerby.kerberos.kerb.spec.common.EncryptedData;
+import org.apache.kerby.kerberos.kerb.spec.common.KrbMessageType;
+
+/**
+ AP-REP          ::= [APPLICATION 15] SEQUENCE {
+ pvno            [0] INTEGER (5),
+ msg-type        [1] INTEGER (15),
+ enc-part        [2] EncryptedData -- EncAPRepPart
+ }
+ */
+public class ApRep extends KrbMessage {
+    private static int ENC_PART = 2;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(PVNO, 0, Asn1Integer.class),
+            new Asn1FieldInfo(MSG_TYPE, 1, Asn1Integer.class),
+            new Asn1FieldInfo(ENC_PART, 2, EncryptedData.class)
+    };
+
+    public ApRep() {
+        super(KrbMessageType.AP_REP, fieldInfos);
+    }
+
+    private EncAPRepPart encRepPart;
+
+    public EncAPRepPart getEncRepPart() {
+        return encRepPart;
+    }
+
+    public void setEncRepPart(EncAPRepPart encRepPart) {
+        this.encRepPart = encRepPart;
+    }
+
+    public EncryptedData getEncryptedEncPart() {
+        return getFieldAs(ENC_PART, EncryptedData.class);
+    }
+
+    public void setEncryptedEncPart(EncryptedData encryptedEncPart) {
+        setFieldAs(ENC_PART, encryptedEncPart);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApReq.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApReq.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApReq.java
new file mode 100644
index 0000000..5a78f6c
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/ApReq.java
@@ -0,0 +1,89 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.ap;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.kerberos.kerb.spec.common.KrbMessage;
+import org.apache.kerby.kerberos.kerb.spec.common.EncryptedData;
+import org.apache.kerby.kerberos.kerb.spec.common.KrbMessageType;
+import org.apache.kerby.kerberos.kerb.spec.ticket.Ticket;
+
+/**
+ AP-REQ          ::= [APPLICATION 14] SEQUENCE {
+ pvno            [0] INTEGER (5),
+ msg-type        [1] INTEGER (14),
+ ap-options      [2] APOptions,
+ ticket          [3] Ticket,
+ authenticator   [4] EncryptedData -- Authenticator
+ }
+ */
+public class ApReq extends KrbMessage {
+    private static int AP_OPTIONS = 2;
+    private static int TICKET = 3;
+    private static int AUTHENTICATOR = 4;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(PVNO, Asn1Integer.class),
+            new Asn1FieldInfo(MSG_TYPE, Asn1Integer.class),
+            new Asn1FieldInfo(AP_OPTIONS, ApOptions.class),
+            new Asn1FieldInfo(TICKET, Ticket.class),
+            new Asn1FieldInfo(AUTHENTICATOR, EncryptedData.class)
+    };
+
+    private Authenticator authenticator;
+
+    public ApReq() {
+        super(KrbMessageType.AP_REQ, fieldInfos);
+    }
+
+    public ApOptions getApOptions() {
+        return getFieldAs(AP_OPTIONS, ApOptions.class);
+    }
+
+    public void setApOptions(ApOptions apOptions) {
+        setFieldAs(AP_OPTIONS, apOptions);
+    }
+
+    public Ticket getTicket() {
+        return getFieldAs(TICKET, Ticket.class);
+    }
+
+    public void setTicket(Ticket ticket) {
+        setFieldAs(TICKET, ticket);
+    }
+
+    public Authenticator getAuthenticator() {
+        return authenticator;
+    }
+
+    public void setAuthenticator(Authenticator authenticator) {
+        this.authenticator = authenticator;
+    }
+
+    public EncryptedData getEncryptedAuthenticator() {
+        return getFieldAs(AUTHENTICATOR, EncryptedData.class);
+    }
+
+    public void setEncryptedAuthenticator(EncryptedData encryptedAuthenticator) {
+        setFieldAs(AUTHENTICATOR, encryptedAuthenticator);
+    }
+}
+

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/Authenticator.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/Authenticator.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/Authenticator.java
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index 0000000..4c4dc86
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/Authenticator.java
@@ -0,0 +1,144 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.ap;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.kerberos.kerb.spec.KerberosString;
+import org.apache.kerby.kerberos.kerb.spec.KerberosTime;
+import org.apache.kerby.kerberos.kerb.spec.KrbAppSequenceType;
+import org.apache.kerby.kerberos.kerb.spec.common.AuthorizationData;
+import org.apache.kerby.kerberos.kerb.spec.common.CheckSum;
+import org.apache.kerby.kerberos.kerb.spec.common.EncryptionKey;
+import org.apache.kerby.kerberos.kerb.spec.common.PrincipalName;
+
+/**
+ Authenticator   ::= [APPLICATION 2] SEQUENCE  {
+ authenticator-vno       [0] INTEGER (5),
+ crealm                  [1] Realm,
+ cname                   [2] PrincipalName,
+ cksum                   [3] Checksum OPTIONAL,
+ cusec                   [4] Microseconds,
+ ctime                   [5] KerberosTime,
+ subkey                  [6] EncryptionKey OPTIONAL,
+ seq-number              [7] UInt32 OPTIONAL,
+ authorization-data      [8] AuthorizationData OPTIONAL
+ }
+ */
+public class Authenticator extends KrbAppSequenceType {
+    public static int TAG = 2;
+    private static int AUTHENTICATOR_VNO = 0;
+    private static int CREALM = 1;
+    private static int CNAME = 2;
+    private static int CKSUM = 3;
+    private static int CUSEC = 4;
+    private static int CTIME = 5;
+    private static int SUBKEY = 6;
+    private static int SEQ_NUMBER = 7;
+    private static int AUTHORIZATION_DATA = 8;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(AUTHENTICATOR_VNO, 0, Asn1Integer.class),
+            new Asn1FieldInfo(CREALM, 1, KerberosString.class),
+            new Asn1FieldInfo(CNAME, 2, PrincipalName.class),
+            new Asn1FieldInfo(CKSUM, 3, CheckSum.class),
+            new Asn1FieldInfo(CUSEC, 4, Asn1Integer.class),
+            new Asn1FieldInfo(CTIME, 5, KerberosTime.class),
+            new Asn1FieldInfo(SUBKEY, 6, EncryptionKey.class),
+            new Asn1FieldInfo(SEQ_NUMBER, 7, Asn1Integer.class),
+            new Asn1FieldInfo(AUTHORIZATION_DATA, 8, AuthorizationData.class)
+    };
+
+    public Authenticator() {
+        super(TAG, fieldInfos);
+    }
+
+    public int getAuthenticatorVno() {
+        return getFieldAsInt(AUTHENTICATOR_VNO);
+    }
+
+    public void setAuthenticatorVno(int authenticatorVno) {
+        setFieldAsInt(AUTHENTICATOR_VNO, authenticatorVno);
+    }
+
+    public String getCrealm() {
+        return getFieldAsString(CREALM);
+    }
+
+    public void setCrealm(String crealm) {
+        setFieldAsString(CREALM, crealm);
+    }
+
+    public PrincipalName getCname() {
+        return getFieldAs(CNAME, PrincipalName.class);
+    }
+
+    public void setCname(PrincipalName cname) {
+        setFieldAs(CNAME, cname);
+    }
+
+    public CheckSum getCksum() {
+        return getFieldAs(CKSUM, CheckSum.class);
+    }
+
+    public void setCksum(CheckSum cksum) {
+        setFieldAs(CKSUM, cksum);
+    }
+
+    public int getCusec() {
+        return getFieldAsInt(CUSEC);
+    }
+
+    public void setCusec(int cusec) {
+        setFieldAsInt(CUSEC, cusec);
+    }
+
+    public KerberosTime getCtime() {
+        return getFieldAsTime(CTIME);
+    }
+
+    public void setCtime(KerberosTime ctime) {
+        setFieldAs(CTIME, ctime);
+    }
+
+    public EncryptionKey getSubKey() {
+        return getFieldAs(SUBKEY, EncryptionKey.class);
+    }
+
+    public void setSubKey(EncryptionKey subKey) {
+        setFieldAs(SUBKEY, subKey);
+    }
+
+    public int getSeqNumber() {
+        return getFieldAsInt(SEQ_NUMBER);
+    }
+
+    public void setSeqNumber(Integer seqNumber) {
+        setFieldAsInt(SEQ_NUMBER, seqNumber);
+    }
+
+    public AuthorizationData getAuthorizationData() {
+        return getFieldAs(AUTHORIZATION_DATA, AuthorizationData.class);
+    }
+
+    public void setAuthorizationData(AuthorizationData authorizationData) {
+        setFieldAs(AUTHORIZATION_DATA, authorizationData);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/EncAPRepPart.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/EncAPRepPart.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/EncAPRepPart.java
new file mode 100644
index 0000000..5c35170
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/ap/EncAPRepPart.java
@@ -0,0 +1,85 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.ap;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.kerberos.kerb.spec.KerberosTime;
+import org.apache.kerby.kerberos.kerb.spec.KrbAppSequenceType;
+import org.apache.kerby.kerberos.kerb.spec.common.EncryptionKey;
+
+/**
+ EncAPRepPart    ::= [APPLICATION 27] SEQUENCE {
+ ctime           [0] KerberosTime,
+ cusec           [1] Microseconds,
+ subkey          [2] EncryptionKey OPTIONAL,
+ seq-number      [3] UInt32 OPTIONAL
+ }
+ */
+public class EncAPRepPart extends KrbAppSequenceType {
+    public static int TAG = 27;
+    private static int CTIME = 0;
+    private static int CUSEC = 1;
+    private static int SUBKEY = 2;
+    private static int SEQ_NUMBER = 3;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(CTIME, 0, KerberosTime.class),
+            new Asn1FieldInfo(CUSEC, 1, Asn1Integer.class),
+            new Asn1FieldInfo(SUBKEY, 2, EncryptionKey.class),
+            new Asn1FieldInfo(SEQ_NUMBER, 3, Asn1Integer.class)
+    };
+
+    public EncAPRepPart() {
+        super(TAG, fieldInfos);
+    }
+
+    public KerberosTime getCtime() {
+        return getFieldAsTime(CTIME);
+    }
+
+    public void setCtime(KerberosTime ctime) {
+        setFieldAs(CTIME, ctime);
+    }
+
+    public int getCusec() {
+        return getFieldAsInt(CUSEC);
+    }
+
+    public void setCusec(int cusec) {
+        setFieldAsInt(CUSEC, cusec);
+    }
+
+    public EncryptionKey getSubkey() {
+        return getFieldAs(SUBKEY, EncryptionKey.class);
+    }
+
+    public void setSubkey(EncryptionKey subkey) {
+        setFieldAs(SUBKEY, subkey);
+    }
+
+    public int getSeqNumber() {
+        return getFieldAsInt(SEQ_NUMBER);
+    }
+
+    public void setSeqNumber(Integer seqNumber) {
+        setFieldAsInt(SEQ_NUMBER, seqNumber);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AdToken.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AdToken.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AdToken.java
new file mode 100644
index 0000000..51f9b5b
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AdToken.java
@@ -0,0 +1,49 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceType;
+
+/**
+ AD-TOKEN ::= SEQUENCE {
+    token     [0]  OCTET STRING,
+ }
+*/
+public class AdToken extends KrbSequenceType {
+    private static int TOKEN = 0;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(TOKEN, KrbToken.class)
+    };
+
+    public AdToken() {
+        super(fieldInfos);
+    }
+
+    public KrbToken getToken() {
+        return getFieldAs(TOKEN, KrbToken.class);
+    }
+
+    public void setToken(KrbToken token) {
+        setFieldAs(TOKEN, token);
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationData.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationData.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationData.java
new file mode 100644
index 0000000..70c1450
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationData.java
@@ -0,0 +1,32 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceOfType;
+
+/**
+ AuthorizationData       ::= SEQUENCE OF SEQUENCE {
+ ad-type         [0] Int32,
+ ad-data         [1] OCTET STRING
+ }
+ */
+public class AuthorizationData extends KrbSequenceOfType<AuthorizationDataEntry> {
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationDataEntry.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationDataEntry.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationDataEntry.java
new file mode 100644
index 0000000..62cb19f
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationDataEntry.java
@@ -0,0 +1,62 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.asn1.type.Asn1OctetString;
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceType;
+
+/**
+ AuthorizationData       ::= SEQUENCE OF SEQUENCE {
+ ad-type         [0] Int32,
+ ad-data         [1] OCTET STRING
+ }
+ */
+public class AuthorizationDataEntry extends KrbSequenceType {
+    private static int AD_TYPE = 0;
+    private static int AD_DATA = 1;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(AD_TYPE, 0, Asn1Integer.class),
+            new Asn1FieldInfo(AD_DATA, 1, Asn1OctetString.class)
+    };
+
+    public AuthorizationDataEntry() {
+        super(fieldInfos);
+    }
+
+    public AuthorizationType getAuthzType() {
+        Integer value = getFieldAsInteger(AD_TYPE);
+        return AuthorizationType.fromValue(value);
+    }
+
+    public void setAuthzType(AuthorizationType authzType) {
+        setFieldAsInt(AD_TYPE, authzType.getValue());
+    }
+
+    public byte[] getAuthzData() {
+        return getFieldAsOctets(AD_DATA);
+    }
+
+    public void setAuthzData(byte[] authzData) {
+        setFieldAsOctets(AD_DATA, authzData);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationType.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationType.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationType.java
new file mode 100644
index 0000000..a8ce0cd
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/AuthorizationType.java
@@ -0,0 +1,143 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbEnum;
+
+public enum AuthorizationType implements KrbEnum {
+    /**
+     * Constant for the "null" authorization type.
+     */
+    NULL(0),
+
+    /**
+     * Constant for the "if relevant" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_IF_RELEVANT(1),
+
+    /**
+     * Constant for the "intended for server" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_INTENDED_FOR_SERVER(2),
+
+    /**
+     * Constant for the  "intended for application class" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_INTENDED_FOR_APPLICATION_CLASS(3),
+
+    /**
+     * Constant for the "kdc issued" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_KDC_ISSUED(4),
+
+    /**
+     * Constant for the "or" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_OR(5),
+
+    /**
+     * Constant for the "mandatory ticket extensions" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_MANDATORY_TICKET_EXTENSIONS(6),
+
+    /**
+     * Constant for the "in ticket extensions" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_IN_TICKET_EXTENSIONS(7),
+
+    /**
+     * Constant for the "mandatory-for-kdc" authorization type.
+     *
+     * RFC 4120
+     */
+    AD_MANDATORY_FOR_KDC(8),
+
+    /**
+     * Constant for the "OSF DCE" authorization type.
+     *
+     * RFC 1510
+     */
+    OSF_DCE(64),
+
+    /**
+     * Constant for the "sesame" authorization type.
+     *
+     * RFC 1510
+     */
+    SESAME(65),
+
+    /**
+     * Constant for the "OSF-DCE pki certid" authorization type.
+     *
+     * RFC 1510
+     */
+    AD_OSF_DCE_PKI_CERTID(66),
+
+    /**
+     * Constant for the "sesame" authorization type.
+     *
+     * RFC 1510
+     */
+    AD_WIN2K_PAC(128),
+
+    /**
+     * Constant for the "sesame" authorization type.
+     *
+     * RFC 1510
+     */
+    AD_ETYPE_NEGOTIATION(129);
+
+    private final int value;
+
+    private AuthorizationType(int value) {
+        this.value = value;
+    }
+
+    @Override
+    public int getValue() {
+        return value;
+    }
+
+    public static AuthorizationType fromValue(Integer value) {
+        if (value != null) {
+            for (KrbEnum e : values()) {
+                if (e.getValue() == value.intValue()) {
+                    return (AuthorizationType) e;
+                }
+            }
+        }
+
+        return NULL;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSum.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSum.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSum.java
new file mode 100644
index 0000000..9822c02
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSum.java
@@ -0,0 +1,95 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.asn1.type.Asn1OctetString;
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceType;
+
+import java.util.Arrays;
+
+/**
+ Checksum        ::= SEQUENCE {
+ cksumtype       [0] Int32,
+ checksum        [1] OCTET STRING
+ }
+ */
+public class CheckSum extends KrbSequenceType {
+    private static int CKSUM_TYPE = 0;
+    private static int CHECK_SUM = 1;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+        new Asn1FieldInfo(CKSUM_TYPE, 0, Asn1Integer.class),
+        new Asn1FieldInfo(CHECK_SUM, 1, Asn1OctetString.class)
+    };
+
+    public CheckSum() {
+        super(fieldInfos);
+    }
+
+    public CheckSum(CheckSumType cksumType, byte[] checksum) {
+        this();
+
+        setCksumtype(cksumType);
+        setChecksum(checksum);
+    }
+
+    public CheckSum(int cksumType, byte[] checksum) {
+        this(CheckSumType.fromValue(cksumType), checksum);
+    }
+
+    public CheckSumType getCksumtype() {
+        Integer value = getFieldAsInteger(CKSUM_TYPE);
+        return CheckSumType.fromValue(value);
+    }
+
+    public void setCksumtype(CheckSumType cksumtype) {
+        setFieldAsInt(CKSUM_TYPE, cksumtype.getValue());
+    }
+
+    public byte[] getChecksum() {
+        return getFieldAsOctets(CHECK_SUM);
+    }
+
+    public void setChecksum(byte[] checksum) {
+        setFieldAsOctets(CHECK_SUM, checksum);
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (this == other) return true;
+        if (other == null || getClass() != other.getClass()) return false;
+
+        CheckSum that = (CheckSum) other;
+
+        if (getCksumtype() != that.getCksumtype()) return false;
+
+        return Arrays.equals(getChecksum(), that.getChecksum());
+    }
+
+    public boolean isEqual(CheckSum other) {
+        return this.equals(other);
+    }
+
+    public boolean isEqual(byte[] cksumBytes) {
+        return Arrays.equals(getChecksum(), cksumBytes);
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSumType.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSumType.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSumType.java
new file mode 100644
index 0000000..b7be286
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/CheckSumType.java
@@ -0,0 +1,115 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbEnum;
+
+public enum CheckSumType implements KrbEnum {
+    NONE(0, "none", "None checksum type"),
+
+    CRC32(0x0001, "crc32", "CRC-32"),
+
+    RSA_MD4(0x0002, "md4", "RSA-MD4"),
+
+    RSA_MD4_DES(0x0003, "md4-des", "RSA-MD4 with DES cbc mode"),
+
+    DES_CBC(0x0004, "des-cbc", "DES cbc mode"),
+    DES_MAC(0x0004, "des-mac", "DES cbc mode"),
+
+    //des-mac-k
+
+    //rsa-md4-des-k
+
+    RSA_MD5(0x0007, "md5", "RSA-MD5"),
+
+    RSA_MD5_DES(0x0008, "md5-des", "RSA-MD5 with DES cbc mode"),
+
+    NIST_SHA(0x0009, "sha", "NIST-SHA"),
+
+    HMAC_SHA1_DES3(0x000c, "hmac-sha1-des3", "HMAC-SHA1 DES3 key"),
+    HMAC_SHA1_DES3_KD(0x000c, "hmac-sha1-des3-kd", "HMAC-SHA1 DES3 key"),
+
+    ////RFC 3962. Used with ENCTYPE_AES128_CTS_HMAC_SHA1_96
+    HMAC_SHA1_96_AES128(0x000f, "hmac-sha1-96-aes128", "HMAC-SHA1 AES128 key"),
+
+    //RFC 3962. Used with ENCTYPE_AES256_CTS_HMAC_SHA1_96
+    HMAC_SHA1_96_AES256(0x0010, "hmac-sha1-96-aes256", "HMAC-SHA1 AES256 key"),
+
+    //RFC 6803
+    CMAC_CAMELLIA128(0x0011, "cmac-camellia128", "CMAC Camellia128 key"),
+
+    //RFC 6803
+    CMAC_CAMELLIA256(0x0012, "cmac-camellia256", "CMAC Camellia256 key"),
+
+    //Microsoft netlogon cksumtype
+    MD5_HMAC_ARCFOUR(-137, "md5-hmac-rc4", "Microsoft MD5 HMAC"),
+
+    //Microsoft md5 hmac cksumtype
+    HMAC_MD5_ARCFOUR(-138, "hmac-md5-arcfour", "Microsoft HMAC MD5"),
+    HMAC_MD5_ENC(-138, "hmac-md5-enc", "Microsoft HMAC MD5"),
+    HMAC_MD5_RC4(-138, "hmac-md5-rc4", "Microsoft HMAC MD5");
+
+    private final int value;
+
+    private final String name;
+
+    private final String displayName;
+
+    private CheckSumType(int value, String name, String displayName) {
+        this.value = value;
+        this.name = name;
+        this.displayName = displayName;
+    }
+
+    @Override
+    public int getValue() {
+        return value;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    public static CheckSumType fromValue(Integer value) {
+        if (value != null) {
+            for (KrbEnum e : values()) {
+                if (e.getValue() == value) {
+                    return (CheckSumType) e;
+                }
+            }
+        }
+        return NONE;
+    }
+
+    public static CheckSumType fromName(String name) {
+        if (name != null) {
+            for (CheckSumType cs : values()) {
+                if (cs.getName() == name) {
+                    return (CheckSumType) cs;
+                }
+            }
+        }
+        return NONE;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptedData.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptedData.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptedData.java
new file mode 100644
index 0000000..3875000
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptedData.java
@@ -0,0 +1,96 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.asn1.type.Asn1OctetString;
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceType;
+
+import java.util.Arrays;
+
+/**
+ EncryptedData   ::= SEQUENCE {
+ etype   [0] Int32 -- EncryptionType --,
+ kvno    [1] UInt32 OPTIONAL,
+ cipher  [2] OCTET STRING -- ciphertext
+ }
+ */
+public class EncryptedData extends KrbSequenceType {
+    private static int ETYPE = 0;
+    private static int KVNO = 1;
+    private static int CIPHER = 2;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(ETYPE, 0, Asn1Integer.class),
+            new Asn1FieldInfo(KVNO, 1, Asn1Integer.class),
+            new Asn1FieldInfo(CIPHER, 2, Asn1OctetString.class)
+    };
+
+    public EncryptedData() {
+        super(fieldInfos);
+    }
+
+    public EncryptionType getEType() {
+        Integer value = getFieldAsInteger(ETYPE);
+        return EncryptionType.fromValue(value);
+    }
+
+    public void setEType(EncryptionType eType) {
+        setFieldAsInt(ETYPE, eType.getValue());
+    }
+
+    public int getKvno() {
+        Integer value = getFieldAsInteger(KVNO);
+        if (value != null) {
+            return value.intValue();
+        }
+        return -1;
+    }
+
+    public void setKvno(int kvno) {
+        setFieldAsInt(KVNO, kvno);
+    }
+
+    public byte[] getCipher() {
+        return getFieldAsOctets(CIPHER);
+    }
+
+    public void setCipher(byte[] cipher) {
+        setFieldAsOctets(CIPHER, cipher);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        EncryptedData that = (EncryptedData) o;
+
+        /*
+        if (getKvno() != -1 && that.getKvno() != -1 &&
+                getKvno() != that.getKvno()) return false;
+        */
+
+        if (getEType() != that.getEType()) return false;
+
+        return Arrays.equals(getCipher(), that.getCipher());
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionKey.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionKey.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionKey.java
new file mode 100644
index 0000000..6f7f540
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionKey.java
@@ -0,0 +1,107 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.asn1.type.Asn1FieldInfo;
+import org.apache.kerby.asn1.type.Asn1Integer;
+import org.apache.kerby.asn1.type.Asn1OctetString;
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceType;
+
+import java.util.Arrays;
+
+/**
+ EncryptionKey   ::= SEQUENCE {
+ keytype         [0] Int32 -- actually encryption type --,
+ keyvalue        [1] OCTET STRING
+ }
+ */
+public class EncryptionKey extends KrbSequenceType {
+    private static int KEY_TYPE = 0;
+    private static int KEY_VALUE = 1;
+
+    private int kvno = -1;
+
+    static Asn1FieldInfo[] fieldInfos = new Asn1FieldInfo[] {
+            new Asn1FieldInfo(KEY_TYPE, 0, Asn1Integer.class),
+            new Asn1FieldInfo(KEY_VALUE, 1, Asn1OctetString.class)
+    };
+
+    public EncryptionKey() {
+        super(fieldInfos);
+    }
+
+    public EncryptionKey(int keyType, byte[] keyData) {
+        this(keyType, keyData, -1);
+    }
+
+    public EncryptionKey(int keyType, byte[] keyData, int kvno) {
+        this(EncryptionType.fromValue(keyType), keyData, kvno);
+    }
+
+    public EncryptionKey(EncryptionType keyType, byte[] keyData) {
+        this(keyType, keyData, -1);
+    }
+
+    public EncryptionKey(EncryptionType keyType, byte[] keyData, int kvno) {
+        this();
+        setKeyType(keyType);
+        setKeyData(keyData);
+        setKvno(kvno);
+    }
+
+    public EncryptionType getKeyType() {
+        Integer value = getFieldAsInteger(KEY_TYPE);
+        return EncryptionType.fromValue(value);
+    }
+
+    public void setKeyType(EncryptionType keyType) {
+        setFieldAsInt(KEY_TYPE, keyType.getValue());
+    }
+
+    public byte[] getKeyData() {
+        return getFieldAsOctets(KEY_VALUE);
+    }
+
+    public void setKeyData(byte[] keyData) {
+        setFieldAsOctets(KEY_VALUE, keyData);
+    }
+
+    public void setKvno(int kvno) {
+        this.kvno = kvno;
+    }
+
+    public int getKvno() {
+        return kvno;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        EncryptionKey that = (EncryptionKey) o;
+
+        if (kvno != -1 && that.kvno != -1 && kvno != that.kvno) return false;
+
+        if (getKeyType() != that.getKeyType()) return false;
+
+        return Arrays.equals(getKeyData(), that.getKeyData());
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionType.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionType.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionType.java
new file mode 100644
index 0000000..45c2427
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EncryptionType.java
@@ -0,0 +1,132 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbEnum;
+
+/**
+ * According to krb5.hin
+ */
+public enum EncryptionType implements KrbEnum {
+
+    NONE(0, "none", "None encryption type"),
+
+    DES_CBC_CRC(0x0001, "des-cbc-crc", "DES cbc mode with CRC-32"),
+
+    DES_CBC_MD4(0x0002, "des-cbc-md4", "DES cbc mode with RSA-MD4"),
+
+    DES_CBC_MD5(0x0003, "des-cbc-md5", "DES cbc mode with RSA-MD5"),
+    DES(0x0003, "des", "DES cbc mode with RSA-MD5"),
+
+    DES_CBC_RAW(0x0004, "des-cbc-raw", "DES cbc mode raw"),
+
+    DES3_CBC_SHA(0x0005, "des3-cbc-sha", "DES-3 cbc with SHA1"),
+
+    DES3_CBC_RAW(0x0006, "des3-cbc-raw", "Triple DES cbc mode raw"),
+
+    DES_HMAC_SHA1(0x0008, "des-hmac-sha1", "DES with HMAC/sha1"),
+
+    DSA_SHA1_CMS(0x0009, "dsa-sha1-cms", "DSA with SHA1, CMS signature"),
+
+    MD5_RSA_CMS(0x000a, "md5-rsa-cms", "MD5 with RSA, CMS signature"),
+
+    SHA1_RSA_CMS(0x000b, "sha1-rsa-cms", "SHA1 with RSA, CMS signature"),
+
+    RC2_CBC_ENV(0x000c, "rc2-cbc-env", "RC2 cbc mode, CMS enveloped data"),
+
+    RSA_ENV(0x000d, "rsa-env", "RSA encryption, CMS enveloped data"),
+
+    RSA_ES_OAEP_ENV(0x000e, "rsa-es-oaep-env", "RSA w/OEAP encryption, CMS enveloped data"),
+
+    DES3_CBC_ENV(0x000f, "des3-cbc-env", "DES-3 cbc mode, CMS enveloped data"),
+
+    DES3_CBC_SHA1(0x0010, "des3-cbc-sha1", "Triple DES cbc mode with HMAC/sha1"),
+    DES3_HMAC_SHA1(0x0010, "des3-hmac-sha1", "Triple DES cbc mode with HMAC/sha1"),
+    DES3_CBC_SHA1_KD(0x0010, "des3-cbc-sha1-kd", "Triple DES cbc mode with HMAC/sha1"),
+
+    AES128_CTS_HMAC_SHA1_96 (0x0011, "aes128-cts-hmac-sha1-96", "AES-128 CTS mode with 96-bit SHA-1 HMAC"),
+    AES128_CTS (0x0011, "aes128-cts", "AES-128 CTS mode with 96-bit SHA-1 HMAC"),
+
+    AES256_CTS_HMAC_SHA1_96(0x0012, "aes256-cts-hmac-sha1-96", "AES-256 CTS mode with 96-bit SHA-1 HMAC"),
+    AES256_CTS(0x0012, "aes256-cts", "AES-256 CTS mode with 96-bit SHA-1 HMAC"),
+
+    ARCFOUR_HMAC(0x0017, "arcfour-hmac", "ArcFour with HMAC/md5"),
+    RC4_HMAC(0x0017, "rc4-hmac", "ArcFour with HMAC/md5"),
+    ARCFOUR_HMAC_MD5(0x0017, "arcfour-hmac-md5", "ArcFour with HMAC/md5"),
+
+    ARCFOUR_HMAC_EXP(0x0018, "arcfour-hmac-exp", "Exportable ArcFour with HMAC/md5"),
+    RC4_HMAC_EXP(0x0018, "rc4-hmac-exp", "Exportable ArcFour with HMAC/md5"),
+    ARCFOUR_HMAC_MD5_EXP(0x0018, "arcfour-hmac-md5-exp", "Exportable ArcFour with HMAC/md5"),
+
+    CAMELLIA128_CTS_CMAC(0x0019, "camellia128-cts-cmac", "Camellia-128 CTS mode with CMAC"),
+    CAMELLIA128_CTS(0x0019, "camellia128-cts", "Camellia-128 CTS mode with CMAC"),
+
+    CAMELLIA256_CTS_CMAC(0x001a, "camellia256-cts-cmac", "Camellia-256 CTS mode with CMAC"),
+    CAMELLIA256_CTS(0x001a, "camellia256-cts", "Camellia-256 CTS mode with CMAC");
+
+    //UNKNOWN(0x01ff, "UNKNOWN", "Unknown encryption type");
+
+    private final int value;
+
+    private final String name;
+
+    private final String displayName;
+
+    private EncryptionType(int value, String name, String displayName) {
+        this.value = value;
+        this.name = name;
+        this.displayName = displayName;
+    }
+
+    @Override
+    public int getValue() {
+        return value;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    public static EncryptionType fromValue(Integer value) {
+        if (value != null) {
+            for (KrbEnum e : values()) {
+                if (e.getValue() == value) {
+                    return (EncryptionType) e;
+                }
+            }
+        }
+        return NONE;
+    }
+
+    public static EncryptionType fromName(String name) {
+        if (name != null) {
+            for (EncryptionType e : values()) {
+                if (e.getName().equals(name)) {
+                    return (EncryptionType) e;
+                }
+            }
+        }
+        return NONE;
+    }
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo.java
new file mode 100644
index 0000000..7a82e4d
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo.java
@@ -0,0 +1,29 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceOfType;
+
+/**
+ ETYPE-INFO              ::= SEQUENCE OF ETYPE-INFO-ENTRY
+ */
+public class EtypeInfo extends KrbSequenceOfType<EtypeInfoEntry> {
+
+}

http://git-wip-us.apache.org/repos/asf/directory-kerberos/blob/ceacb982/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo2.java
----------------------------------------------------------------------
diff --git a/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo2.java b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo2.java
new file mode 100644
index 0000000..0635db9
--- /dev/null
+++ b/kerby-kerb/kerb-core/src/main/java/org/apache/kerby/kerberos/kerb/spec/common/EtypeInfo2.java
@@ -0,0 +1,29 @@
+/**
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.kerby.kerberos.kerb.spec.common;
+
+import org.apache.kerby.kerberos.kerb.spec.KrbSequenceOfType;
+
+/**
+ ETYPE-INFO2             ::= SEQUENCE SIZE (1..MAX) OF ETYPE-INFO2-ENTRY
+ */
+public class EtypeInfo2 extends KrbSequenceOfType<EtypeInfo2Entry> {
+
+}