org.apache.directory.server.kerberos.shared.crypto.encryption

Class Aes128CtsSha1Encryption

java.lang.Object

org.apache.directory.server.kerberos.shared.crypto.encryption.EncryptionEngine

org.apache.directory.server.kerberos.shared.crypto.encryption.Aes128CtsSha1Encryption

All Implemented Interfaces:

ChecksumEngine

public class Aes128CtsSha1Encryption
extends EncryptionEngine

Author:

Apache Directory Project

Constructor Summary

Constructors

Constructor and Description
Aes128CtsSha1Encryption()

Method Summary

Modifier and Type	Method and Description
byte[]	calculateChecksum(byte[] data, byte[] key, KeyUsage usage) Calculate a checksum given raw bytes and an (optional) key.
byte[]	calculateIntegrity(byte[] data, byte[] key, KeyUsage usage)
ChecksumType	checksumType() Returns the checksum type of this checksum engine.
byte[]	decrypt(byte[] cipherText, byte[] keyBytes)
protected byte[]	deriveKey(byte[] baseKey, byte[] usage, int n, int k)
byte[]	encrypt(byte[] plainText, byte[] keyBytes)
int	getChecksumLength()
int	getConfounderLength()
byte[]	getDecryptedData(EncryptionKey key, EncryptedData data, KeyUsage usage)
EncryptedData	getEncryptedData(EncryptionKey key, byte[] plainText, KeyUsage usage)
EncryptionType	getEncryptionType()
int	getKeyLength()

Methods inherited from class org.apache.directory.server.kerberos.shared.crypto.encryption.EncryptionEngine

concatenateBytes, deriveRandom, getBit, getRandomBytes, getUsageKc, getUsageKe, getUsageKi, padString, removeLeadingBytes, removeTrailingBytes, setBit

Methods inherited from class java.lang.Object

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

Constructor Detail

Aes128CtsSha1Encryption

public Aes128CtsSha1Encryption()

Method Detail

getEncryptionType

public EncryptionType getEncryptionType()

Specified by:

getEncryptionType in class EncryptionEngine

checksumType

public ChecksumType checksumType()

Description copied from interface: ChecksumEngine

Returns the checksum type of this checksum engine.

Returns:

The checksum type.

getKeyLength

public int getKeyLength()

getConfounderLength

public int getConfounderLength()

Specified by:

getConfounderLength in class EncryptionEngine

getChecksumLength

public int getChecksumLength()

Specified by:

getChecksumLength in class EncryptionEngine

calculateChecksum

public byte[] calculateChecksum(byte[] data,
                                byte[] key,
                                KeyUsage usage)

Description copied from interface: ChecksumEngine

Calculate a checksum given raw bytes and an (optional) key.

Specified by:

calculateChecksum in interface ChecksumEngine

Parameters:

data - The data

key - The key

usage - The Key usage number

Returns:

The checksum value.

calculateIntegrity

public byte[] calculateIntegrity(byte[] data,
                                 byte[] key,
                                 KeyUsage usage)

Specified by:

calculateIntegrity in class EncryptionEngine

getDecryptedData

public byte[] getDecryptedData(EncryptionKey key,
                               EncryptedData data,
                               KeyUsage usage)
                        throws KerberosException

Specified by:

getDecryptedData in class EncryptionEngine

Throws:

KerberosException

getEncryptedData

public EncryptedData getEncryptedData(EncryptionKey key,
                                      byte[] plainText,
                                      KeyUsage usage)

Specified by:

getEncryptedData in class EncryptionEngine

encrypt

public byte[] encrypt(byte[] plainText,
                      byte[] keyBytes)

Specified by:

encrypt in class EncryptionEngine

decrypt

public byte[] decrypt(byte[] cipherText,
                      byte[] keyBytes)

Specified by:

decrypt in class EncryptionEngine

deriveKey

protected byte[] deriveKey(byte[] baseKey,
                           byte[] usage,
                           int n,
                           int k)