Package org.apache.kerby.kerberos.kerb.crypto.cksum

Class ConfounderedDesCheckSum

java.lang.Object

org.apache.kerby.kerberos.kerb.crypto.AbstractCryptoTypeHandler

org.apache.kerby.kerberos.kerb.crypto.cksum.AbstractCheckSumTypeHandler

org.apache.kerby.kerberos.kerb.crypto.cksum.AbstractKeyedCheckSumTypeHandler

org.apache.kerby.kerberos.kerb.crypto.cksum.ConfounderedDesCheckSum

All Implemented Interfaces:

CheckSumTypeHandler, CryptoTypeHandler

Direct Known Subclasses:

DesCbcCheckSum, RsaMd4DesCheckSum, RsaMd5DesCheckSum

public abstract class ConfounderedDesCheckSum
extends AbstractKeyedCheckSumTypeHandler

Constructor Summary

Constructors

Constructor	Description
ConfounderedDesCheckSum(HashProvider hashProvider, int computeSize, int outputSize)

Method Summary

Modifier and Type	Method	Description
protected byte[]	deriveKey(byte[] key)
protected byte[]	doChecksumWithKey(byte[] data, int start, int len, byte[] key, int usage)
boolean	verifyWithKey(byte[] data, byte[] key, int usage, byte[] checksum)
protected byte[]	xorKey(byte[] key)

Methods inherited from class org.apache.kerby.kerberos.kerb.crypto.cksum.AbstractKeyedCheckSumTypeHandler

checksumWithKey, checksumWithKey, keyMaker, keyMaker

Methods inherited from class org.apache.kerby.kerberos.kerb.crypto.cksum.AbstractCheckSumTypeHandler

checksum, checksum, cksumSize, computeSize, confounderSize, displayName, isSafe, keySize, name, outputSize, verify, verify

Methods inherited from class org.apache.kerby.kerberos.kerb.crypto.AbstractCryptoTypeHandler

checksumEqual, checksumEqual, encProvider, hashProvider

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.kerby.kerberos.kerb.crypto.CheckSumTypeHandler

cksumType

Methods inherited from interface org.apache.kerby.kerberos.kerb.crypto.CryptoTypeHandler

encProvider, hashProvider

Constructor Details

ConfounderedDesCheckSum

public ConfounderedDesCheckSum(HashProvider hashProvider,
 int computeSize,
 int outputSize)

Method Details

doChecksumWithKey

protected byte[] doChecksumWithKey(byte[] data,
 int start,
 int len,
 byte[] key,
 int usage)
                            throws org.apache.kerby.kerberos.kerb.KrbException

Overrides:

doChecksumWithKey in class AbstractKeyedCheckSumTypeHandler

Throws:

org.apache.kerby.kerberos.kerb.KrbException

deriveKey

protected byte[] deriveKey(byte[] key)

xorKey

protected byte[] xorKey(byte[] key)

verifyWithKey

public boolean verifyWithKey(byte[] data,
 byte[] key,
 int usage,
 byte[] checksum)
                      throws org.apache.kerby.kerberos.kerb.KrbException

Specified by:

verifyWithKey in interface CheckSumTypeHandler

Overrides:

verifyWithKey in class AbstractKeyedCheckSumTypeHandler

Throws:

org.apache.kerby.kerberos.kerb.KrbException