sun.security.mule.krb5.internal.crypto
Class HmacMd5ArcFourCksumType

java.lang.Object
  sun.security.mule.krb5.internal.crypto.CksumType
      sun.security.mule.krb5.internal.crypto.HmacMd5ArcFourCksumType

public class HmacMd5ArcFourCksumType
extends CksumType

This class encapsulates the checksum type for HMAC RC4

Author:

Seema Malkani

Constructor Summary

HmacMd5ArcFourCksumType()

Method Summary

byte[]	calculateChecksum(byte[] data, int size)
byte[]	calculateKeyedChecksum(byte[] data, int size, byte[] key, int usage) Calculates keyed checksum.
int	cksumSize()
int	cksumType()
int	confounderSize()
boolean	isSafe()
int	keySize()
int	keyType()
boolean	verifyKeyedChecksum(byte[] data, int size, byte[] key, byte[] checksum, int usage) Verifies keyed checksum.

Methods inherited from class sun.security.mule.krb5.internal.crypto.CksumType

getInstance, getInstance, isChecksumEqual

Methods inherited from class java.lang.Object

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

Constructor Detail

HmacMd5ArcFourCksumType

public HmacMd5ArcFourCksumType()

Method Detail

confounderSize

public int confounderSize()

Specified by:

confounderSize in class CksumType

cksumType

public int cksumType()

Specified by:

cksumType in class CksumType

isSafe

public boolean isSafe()

Specified by:

isSafe in class CksumType

cksumSize

public int cksumSize()

Specified by:

cksumSize in class CksumType

keyType

public int keyType()

Specified by:

keyType in class CksumType

keySize

public int keySize()

Specified by:

keySize in class CksumType

calculateChecksum

public byte[] calculateChecksum(byte[] data,
                                int size)

Specified by:

calculateChecksum in class CksumType

calculateKeyedChecksum

public byte[] calculateKeyedChecksum(byte[] data,
                                     int size,
                                     byte[] key,
                                     int usage)
                              throws KrbCryptoException

Calculates keyed checksum.

Specified by:

calculateKeyedChecksum in class CksumType

Parameters:

data - the data used to generate the checksum.

size - length of the data.

key - the key used to encrypt the checksum.

Returns:

keyed checksum.

Throws:

KrbCryptoException

verifyKeyedChecksum

public boolean verifyKeyedChecksum(byte[] data,
                                   int size,
                                   byte[] key,
                                   byte[] checksum,
                                   int usage)
                            throws KrbCryptoException

Verifies keyed checksum.

Specified by:

verifyKeyedChecksum in class CksumType

Parameters:

data - the data.

size - the length of data.

key - the key used to encrypt the checksum.

checksum -

Returns:

true if verification is successful.

Throws:

KrbCryptoException