org.bouncycastle.openpgp.operator.bc
Class BcPBEDataDecryptorFactory

java.lang.Object
  org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory
      org.bouncycastle.openpgp.operator.bc.BcPBEDataDecryptorFactory

All Implemented Interfaces:

PGPDataDecryptorFactory

public class BcPBEDataDecryptorFactory
extends PBEDataDecryptorFactory

A PBEDataDecryptorFactory for handling PBE decryption operations using the Bouncy Castle lightweight API to implement cryptographic primitives.

Constructor Summary

BcPBEDataDecryptorFactory(char[] pass, BcPGPDigestCalculatorProvider calculatorProvider)
Base constructor.

Method Summary

PGPDataDecryptor	createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key) Constructs a data decryptor.
byte[]	recoverSessionData(int keyAlgorithm, byte[] key, byte[] secKeyData) Decrypts session data from an encrypted data packet.

Methods inherited from class org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory

makeKeyFromPassPhrase

Methods inherited from class java.lang.Object

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

Constructor Detail

BcPBEDataDecryptorFactory

public BcPBEDataDecryptorFactory(char[] pass,
                                 BcPGPDigestCalculatorProvider calculatorProvider)

Base constructor.

Parameters:

pass - the passphrase to use as the primary source of key material.

calculatorProvider - a digest calculator provider to provide calculators to support the key generation calculation required.

Method Detail

recoverSessionData

public byte[] recoverSessionData(int keyAlgorithm,
                                 byte[] key,
                                 byte[] secKeyData)
                          throws PGPException

Description copied from class: PBEDataDecryptorFactory

Decrypts session data from an encrypted data packet.

Specified by:

recoverSessionData in class PBEDataDecryptorFactory

Parameters:

keyAlgorithm - the encryption algorithm used to encrypt the session data.

key - the key bytes for the encryption algorithm.

secKeyData - the encrypted session data to decrypt.

Returns:

the decrypted session data.

Throws:

PGPException - if an error occurs decrypting the session data.

createDataDecryptor

public PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket,
                                            int encAlgorithm,
                                            byte[] key)
                                     throws PGPException

Description copied from interface: PGPDataDecryptorFactory

Constructs a data decryptor.

Parameters:

withIntegrityPacket - true if the packet to be decrypted has integrity checking enabled.

encAlgorithm - the identifier of the encryption algorithm to decrypt with.

key - the bytes of the key for the cipher.

Returns:

a data decryptor that can decrypt (and verify) streams of encrypted data.

Throws:

PGPException - if an error occurs initialising the decryption and integrity checking functions.