org.bouncycastle.openpgp.operator.bc
Class BcPublicKeyDataDecryptorFactory

java.lang.Object
  org.bouncycastle.openpgp.operator.AbstractPublicKeyDataDecryptorFactory
      org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory

All Implemented Interfaces:

PGPDataDecryptorFactory, PublicKeyDataDecryptorFactory

public class BcPublicKeyDataDecryptorFactory

extends AbstractPublicKeyDataDecryptorFactory

A decryptor factory for handling public key decryption operations.

Constructor Summary

BcPublicKeyDataDecryptorFactory(PGPPrivateKey pgpPrivKey)

Method Summary

PGPDataDecryptor	createDataDecryptor(AEADEncDataPacket aeadEncDataPacket, PGPSessionKey sessionKey) Constructs a data decryptor for AEAD Encrypted Data packets.
PGPDataDecryptor	createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key) Constructs a data decryptor for SED or v1 SEIPD packets.
PGPDataDecryptor	createDataDecryptor(SymmetricEncIntegrityPacket seipd, PGPSessionKey sessionKey) Constructs a data decryptor for v2 SEIPD packets.
byte[]	recoverSessionData(int keyAlgorithm, byte[][] secKeyData, int pkeskVersion) Recover the plain session info by decrypting the encrypted session key.

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

checkRange, containsSKAlg, prependSKAlgorithmToSessionData, recoverSessionData, recoverSessionData

Methods inherited from class java.lang.Object

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

Constructor Detail

BcPublicKeyDataDecryptorFactory

public BcPublicKeyDataDecryptorFactory(PGPPrivateKey pgpPrivKey)

Method Detail

recoverSessionData

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

Description copied from interface: PublicKeyDataDecryptorFactory

Recover the plain session info by decrypting the encrypted session key. This method returns the decrypted session info as-is (without prefixing missing cipher algorithm), so the return value is: [sym-alg]?[session-key][checksum]?

Parameters:

keyAlgorithm - public key algorithm

secKeyData - encrypted session key data

pkeskVersion - version of the PKESK packet

Returns:

decrypted session info

Throws:

PGPException

createDataDecryptor

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

Description copied from interface: PGPDataDecryptorFactory

Constructs a data decryptor for SED or v1 SEIPD packets.

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.

createDataDecryptor

public PGPDataDecryptor createDataDecryptor(AEADEncDataPacket aeadEncDataPacket,
                                            PGPSessionKey sessionKey)
                                     throws PGPException

Description copied from interface: PGPDataDecryptorFactory

Constructs a data decryptor for AEAD Encrypted Data packets. This method is used with OpenPGP v5 AEAD.

Parameters:

aeadEncDataPacket - AEAD encrypted data packet

sessionKey - decrypted session key

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.

createDataDecryptor

public PGPDataDecryptor createDataDecryptor(SymmetricEncIntegrityPacket seipd,
                                            PGPSessionKey sessionKey)
                                     throws PGPException

Description copied from interface: PGPDataDecryptorFactory

Constructs a data decryptor for v2 SEIPD packets. This method is used with OpenPGP v6 AEAD.

Parameters:

seipd - version 2 symmetrically encrypted integrity-protected data packet using AEAD.

sessionKey - decrypted session key

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.