Module org.sejda.sambox

Package org.sejda.sambox.encryption

Class Algorithm9

java.lang.Object

org.sejda.sambox.encryption.Algorithm9

All Implemented Interfaces:

PasswordAlgorithm

public class Algorithm9
extends Object
implements PasswordAlgorithm

Algorithm 9 as defined in Chap 7.6.3.4.7 of ISO 32000-2

Field Summary

Fields

Modifier and Type	Field	Description
private final AESEngineNoPadding	engine
private final Algorithm2AHash	hashAlgo
private final byte[]	ownerKeySalt
private final byte[]	ownerValidationSalt
private final byte[]	u

Constructor Summary

Constructors

Constructor	Description
Algorithm9(Algorithm2AHash hashAlgo, byte[] u)
Algorithm9(Algorithm2AHash hashAlgo, byte[] u, byte[] ownerValidationSalt, byte[] ownerKeySalt)

Method Summary

Modifier and Type	Method	Description
byte[]	computeOE(EncryptionContext context)
byte[]	computePassword(EncryptionContext context)

Methods inherited from class java.lang.Object

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

Field Details

ownerValidationSalt

private final byte[] ownerValidationSalt

ownerKeySalt

private final byte[] ownerKeySalt

u

private final byte[] u

hashAlgo

private final Algorithm2AHash hashAlgo

engine

private final AESEngineNoPadding engine

Constructor Details

Algorithm9

Algorithm9(Algorithm2AHash hashAlgo,
 byte[] u,
 byte[] ownerValidationSalt,
 byte[] ownerKeySalt)

Algorithm9

Algorithm9(Algorithm2AHash hashAlgo,
 byte[] u)

Method Details

computePassword

public byte[] computePassword(EncryptionContext context)

Specified by:

computePassword in interface PasswordAlgorithm

Returns:

the computed password based on the given input security params

computeOE

public byte[] computeOE(EncryptionContext context)