org.apache.directory.shared.kerberos.components
Class EncryptedData

java.lang.Object
  org.apache.directory.shared.asn1.AbstractAsn1Object
      org.apache.directory.shared.kerberos.components.EncryptedData

All Implemented Interfaces:

org.apache.directory.shared.asn1.Asn1Object

Direct Known Subclasses:

PaEncTimestamp

public class EncryptedData
extends org.apache.directory.shared.asn1.AbstractAsn1Object

A structure storing an encrypted data element. The ASN.1 grammar is :

 EncryptedData   ::= SEQUENCE {
        etype   [0] Int32 -- EncryptionType --,
        kvno    [1] UInt32 OPTIONAL,
        cipher  [2] OCTET STRING -- ciphertext
 }

Author:

Apache Directory Project

Field Summary

static boolean

HAS_KVNO A constant used when the key is not present

Constructor Summary

EncryptedData()
Creates a new instance of EncryptedData.

EncryptedData(EncryptionType eType, byte[] cipher)
Creates a new instance of EncryptedData.

EncryptedData(EncryptionType eType, int kvno, byte[] cipher)
Creates a new instance of EncryptedData.

Method Summary

int	computeLength() Compute the EncryptedData length
ByteBuffer	encode(ByteBuffer buffer) Encode the EncryptedData message to a PDU.
boolean	equals(Object obj)
byte[]	getCipher() Returns the raw cipher text.
EncryptionType	getEType() Returns the EncryptionType.
int	getKvno() Returns the key version.
int	hashCode()
boolean	hasKvno() Tells if there is a key version.
void	setCipher(byte[] cipher) Set the cipher text
void	setEType(EncryptionType eType) Set the EncryptionType
void	setKvno(int kvno) Set the key version
String	toString()
String	toString(String tabs)

Methods inherited from class org.apache.directory.shared.asn1.AbstractAsn1Object

addLength, getCurrentLength, getExpectedLength, getParent, getTlvId, setCurrentLength, setExpectedLength, setParent

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

HAS_KVNO

public static final boolean HAS_KVNO

A constant used when the key is not present

See Also:

Constant Field Values

Constructor Detail

EncryptedData

public EncryptedData()

Creates a new instance of EncryptedData.

EncryptedData

public EncryptedData(EncryptionType eType,
                     int kvno,
                     byte[] cipher)

Creates a new instance of EncryptedData.

Parameters:

eType - The encription algorithm

kvno - The key version

cipher - the encrypted text

EncryptedData

public EncryptedData(EncryptionType eType,
                     byte[] cipher)

Creates a new instance of EncryptedData.

Parameters:

eType - The encription algorithm

cipher - the encrypted text

Method Detail

getEType

public EncryptionType getEType()

Returns the EncryptionType.

Returns:

The EncryptionType.

setEType

public void setEType(EncryptionType eType)

Set the EncryptionType

Parameters:

eType - the EncryptionType

getKvno

public int getKvno()

Returns the key version.

Returns:

The key version.

setKvno

public void setKvno(int kvno)

Set the key version

Parameters:

kvno - The key version

hasKvno

public boolean hasKvno()

Tells if there is a key version.

Returns:

true if there is a key version.

getCipher

public byte[] getCipher()

Returns the raw cipher text.

Returns:

The raw cipher text.

setCipher

public void setCipher(byte[] cipher)

Set the cipher text

Parameters:

cipher - The cipher text

computeLength

public int computeLength()

Compute the EncryptedData length

 EncryptedData :
 
 0x30 L1 EncryptedData sequence
  |
  +--> 0xA1 L2 etype tag
  |     |
  |     +--> 0x02 L2-1 etype (int)
  |
  +--> [0xA2 L3 kvno tag
  |     |
  |     +--> 0x30 L3-1 kvno (int)] (optional)
  |
  +--> 0xA2 L4 cipher tag
        |
        +--> 0x04 L4-1 cipher (OCTET STRING)
 

encode

public ByteBuffer encode(ByteBuffer buffer)
                  throws org.apache.directory.shared.asn1.EncoderException

Encode the EncryptedData message to a PDU.

 EncryptedData :
 
 0x30 LL
   0xA0 LL 
     0x02 0x01 etype (integer)
   [0xA1 LL 
     0x02 0x01 kvno (integer)] (optional)
   0xA2 LL 
     0x04 LL cipher (OCTET STRING)
 

Specified by:

encode in interface org.apache.directory.shared.asn1.Asn1Object

Overrides:

encode in class org.apache.directory.shared.asn1.AbstractAsn1Object

Parameters:

buffer - The buffer where to put the PDU. It should have been allocated before, with the right size.

Returns:

The constructed PDU.

Throws:

org.apache.directory.shared.asn1.EncoderException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

See Also:

Object.toString()

toString

public String toString(String tabs)

See Also:

Object.toString()