Package org.bouncycastle.openpgp.operator

Class AbstractPublicKeyDataDecryptorFactory

java.lang.Object

org.bouncycastle.openpgp.operator.AbstractPublicKeyDataDecryptorFactory

All Implemented Interfaces:

PGPDataDecryptorFactory, PublicKeyDataDecryptorFactory

Direct Known Subclasses:

BcPublicKeyDataDecryptorFactory

public abstract class AbstractPublicKeyDataDecryptorFactory
extends java.lang.Object
implements PublicKeyDataDecryptorFactory

Constructor Summary

Constructors

Constructor	Description
AbstractPublicKeyDataDecryptorFactory()

Method Summary

Modifier and Type	Method	Description
protected static void	checkRange(int pLen, byte[] enc)
protected boolean	containsSKAlg(int pkeskVersion)
protected byte[]	prependSKAlgorithmToSessionData(PublicKeyEncSessionPacket pkesk, InputStreamPacket encData, byte[] decryptedSessionData)
byte[]	recoverSessionData(int keyAlgorithm, byte[][] secKeyData)	Recover the plain session info by decrypting the encrypted session key.
byte[]	recoverSessionData(PublicKeyEncSessionPacket pkesk, InputStreamPacket encData)	Recover the plain session info by decrypting the encrypted session key.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.bouncycastle.openpgp.operator.PGPDataDecryptorFactory

createDataDecryptor, createDataDecryptor, createDataDecryptor

Methods inherited from interface org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory

recoverSessionData

Constructor Detail

AbstractPublicKeyDataDecryptorFactory

public AbstractPublicKeyDataDecryptorFactory()

Method Detail

recoverSessionData

public final byte[] recoverSessionData(PublicKeyEncSessionPacket pkesk,
                                       InputStreamPacket encData)
                                throws PGPException

Description copied from interface: PublicKeyDataDecryptorFactory

Recover the plain session info by decrypting the encrypted session key. The session info ALWAYS has the symmetric algorithm ID prefixed, so the return value is:

[sym-alg][session-key][checksum]?

Specified by:

recoverSessionData in interface PublicKeyDataDecryptorFactory

Parameters:

pkesk - public-key encrypted session-key packet

encData - encrypted data (sed/seipd/oed) packet

Returns:

decrypted session info

Throws:

PGPException

recoverSessionData

public byte[] recoverSessionData(int keyAlgorithm,
                                 byte[][] secKeyData)
                          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]?

Specified by:

recoverSessionData in interface PublicKeyDataDecryptorFactory

Parameters:

keyAlgorithm - public key algorithm

secKeyData - encrypted session key data

Returns:

decrypted session info

Throws:

PGPException

prependSKAlgorithmToSessionData

protected byte[] prependSKAlgorithmToSessionData(PublicKeyEncSessionPacket pkesk,
                                                 InputStreamPacket encData,
                                                 byte[] decryptedSessionData)
                                          throws PGPException

Throws:

PGPException

containsSKAlg

protected boolean containsSKAlg(int pkeskVersion)

checkRange

protected static void checkRange(int pLen,
                                 byte[] enc)
                          throws PGPException

Throws:

PGPException