Package com.hierynomus.spnego

Class NegTokenInit

java.lang.Object

com.hierynomus.spnego.NegTokenInit

Direct Known Subclasses:

NegTokenInit2

public class NegTokenInit
extends java.lang.Object

This class can encode and decode the SPNEGO negTokenInit Token.

The entire token is an ASN.1 DER encoded sequence of bytes in little endian byte encoding.

The following is the full ASN.1 specification of the token:

 GSSAPI          ::=  [APPLICATION 0] IMPLICIT SEQUENCE {
   mech                MechType,
   negTokenInit        NegotiationToken
 }

 NegotiationToken ::=  CHOICE {
   negTokenInit   [0]  NegTokenInit,
   negTokenTarg   [1]  NegTokenTarg
 }

 NegTokenInit     ::=  SEQUENCE {
   mechTypes      [0]  MechTypeList  OPTIONAL,
   reqFlags       [1]  ContextFlags  OPTIONAL,
   mechToken      [2]  OCTET STRING  OPTIONAL,
   mechListMIC    [3]  OCTET STRING  OPTIONAL
 }

 MechTypeList     ::=  SEQUENCE of MechType

 ContextFlags     ::=  BIT_STRING {
   delegFlag      (0),
   mutualFlag     (1),
   replayFlag     (2),
   sequenceFlag   (3),
   anonFlag       (4),
   confFlag       (5),
   integFlag      (6)
 }

 MechType         ::=  OBJECT IDENTIFIER
 

In the context of this class only the NegTokenInit is covered.

• When an InitToken is sent, it is prepended by the generic GSSAPI header.
• The "mech" field of the GSSAPI header is always set to the SPNEGO OID (1.3.6.1.5.5.2)
• The negTokenInit will have a lead byte of 0xa0 (the CHOICE tagged object).

Field Summary

Fields

Modifier and Type	Field	Description
protected byte[]	mechToken

Constructor Summary

Constructors

Constructor	Description
NegTokenInit()

Method Summary

Modifier and Type	Method	Description
void	addSupportedMech(com.hierynomus.asn1.types.primitive.ASN1ObjectIdentifier oid)
java.util.List<com.hierynomus.asn1.types.primitive.ASN1ObjectIdentifier>	getSupportedMechTypes()
protected void	parseSpnegoToken(com.hierynomus.asn1.types.ASN1Object spnegoToken)
protected void	parseTagged(com.hierynomus.asn1.types.constructed.ASN1TaggedObject asn1TaggedObject)
NegTokenInit	read(byte[] bytes)
void	setMechToken(byte[] mechToken)
void	write(Buffer<?> buffer)
protected void	writeGss(Buffer<?> buffer, com.hierynomus.asn1.types.ASN1Object negToken)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mechToken

protected byte[] mechToken

Constructor Detail

NegTokenInit

public NegTokenInit()

Method Detail

write

public void write(Buffer<?> buffer)
           throws SpnegoException

Throws:

SpnegoException

read

public NegTokenInit read(byte[] bytes)
                  throws SpnegoException

Throws:

SpnegoException

parseTagged

protected void parseTagged(com.hierynomus.asn1.types.constructed.ASN1TaggedObject asn1TaggedObject)
                    throws SpnegoException

Throws:

SpnegoException

addSupportedMech

public void addSupportedMech(com.hierynomus.asn1.types.primitive.ASN1ObjectIdentifier oid)

setMechToken

public void setMechToken(byte[] mechToken)

getSupportedMechTypes

public java.util.List<com.hierynomus.asn1.types.primitive.ASN1ObjectIdentifier> getSupportedMechTypes()

writeGss

protected void writeGss(Buffer<?> buffer,
                        com.hierynomus.asn1.types.ASN1Object negToken)
                 throws java.io.IOException

Throws:

java.io.IOException

parseSpnegoToken

protected void parseSpnegoToken(com.hierynomus.asn1.types.ASN1Object spnegoToken)
                         throws SpnegoException

Throws:

SpnegoException