Bouncy Castle Cryptography Library 1.69

org.bouncycastle.openpgp.operator.bc
Class BcPBEDataDecryptorFactory

java.lang.Object
  extended byorg.bouncycastle.openpgp.operator.PBEDataDecryptorFactory
      extended byorg.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.

Bouncy Castle Cryptography Library 1.69