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

Class CipherTextHandler

java.lang.Object

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

public class CipherTextHandler
extends java.lang.Object

A Hashed Adapter encapsulating ASN.1 cipher text engines to perform encrypt() and decrypt() operations.

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.Map<EncryptionType,java.lang.Class<? extends EncryptionEngine>>	DEFAULT_CIPHERS a map of the default encryption types to the encryption engine class names
private static org.slf4j.Logger	LOG_KRB The loggers for this class

Constructor Summary

Constructors

Constructor and Description
CipherTextHandler()

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(EncryptionKey key, EncryptedData data, KeyUsage usage) Decrypt a block of data.
EncryptedData	encrypt(EncryptionKey key, byte[] plainText, KeyUsage usage)
private EncryptionEngine	getEngine(EncryptionKey key)
EncryptedData	seal(EncryptionKey key, org.apache.directory.api.asn1.Asn1Object message, KeyUsage usage) Performs an encode and an encrypt.

Methods inherited from class java.lang.Object

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

Field Detail

LOG_KRB

private static final org.slf4j.Logger LOG_KRB

The loggers for this class

DEFAULT_CIPHERS

private static final java.util.Map<EncryptionType,java.lang.Class<? extends EncryptionEngine>> DEFAULT_CIPHERS

a map of the default encryption types to the encryption engine class names

Constructor Detail

CipherTextHandler

public CipherTextHandler()

Method Detail

seal

public EncryptedData seal(EncryptionKey key,
                          org.apache.directory.api.asn1.Asn1Object message,
                          KeyUsage usage)
                   throws KerberosException

Performs an encode and an encrypt.

Parameters:

key - The key to use for encrypting.

encodable - The Kerberos object to encode.

usage - The key usage.

Returns:

The Kerberos EncryptedData.

Throws:

KerberosException

encrypt

public EncryptedData encrypt(EncryptionKey key,
                             byte[] plainText,
                             KeyUsage usage)
                      throws KerberosException

Throws:

KerberosException

decrypt

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

Decrypt a block of data.

Parameters:

key - The key used to decrypt the data

data - The data to decrypt

usage - The key usage number

Returns:

The decrypted data as a byte[]

Throws:

KerberosException - If the decoding failed

getEngine

private EncryptionEngine getEngine(EncryptionKey key)
                            throws KerberosException

Throws:

KerberosException