Package com.itextpdf.kernel.crypto.securityhandler

Class StandardHandlerUsingAes128

java.lang.Object

com.itextpdf.kernel.crypto.securityhandler.SecurityHandler

com.itextpdf.kernel.crypto.securityhandler.StandardSecurityHandler

com.itextpdf.kernel.crypto.securityhandler.StandardHandlerUsingStandard40

com.itextpdf.kernel.crypto.securityhandler.StandardHandlerUsingStandard128

com.itextpdf.kernel.crypto.securityhandler.StandardHandlerUsingAes128

public class StandardHandlerUsingAes128
extends StandardHandlerUsingStandard128

Field Summary

Fields

Modifier and Type	Field	Description
private static byte[]	salt

Fields inherited from class com.itextpdf.kernel.crypto.securityhandler.StandardHandlerUsingStandard40

arcfour, documentId, keyLength, metadataPad, pad

Fields inherited from class com.itextpdf.kernel.crypto.securityhandler.StandardSecurityHandler

permissions, PERMS_MASK_1_FOR_REVISION_2, PERMS_MASK_1_FOR_REVISION_3_OR_GREATER, PERMS_MASK_2, usedOwnerPassword

Fields inherited from class com.itextpdf.kernel.crypto.securityhandler.SecurityHandler

extra, md5, mkey, nextObjectKey, nextObjectKeySize

Constructor Summary

Constructors

Constructor	Description
StandardHandlerUsingAes128(PdfDictionary encryptionDictionary, byte[] password, byte[] documentId, boolean encryptMetadata)
StandardHandlerUsingAes128(PdfDictionary encryptionDictionary, byte[] userPassword, byte[] ownerPassword, int permissions, boolean encryptMetadata, boolean embeddedFilesOnly, byte[] documentId)

Method Summary

Modifier and Type	Method	Description
IDecryptor	getDecryptor()	Gets decryptor object.
OutputStreamEncryption	getEncryptionStream(java.io.OutputStream os)	Gets a stream wrapper, responsible for encryption.
void	setHashKeyForNextObject(int objNumber, int objGeneration)	Note: For most of the supported security handlers algorithm to calculate encryption key for particular object is the same.
protected void	setSpecificHandlerDicEntries(PdfDictionary encryptionDictionary, boolean encryptMetadata, boolean embeddedFilesOnly)

Methods inherited from class com.itextpdf.kernel.crypto.securityhandler.StandardHandlerUsingStandard128

calculatePermissions, computeGlobalEncryptionKey, computeOwnerKey, computeUserKey, isValidPassword

Methods inherited from class com.itextpdf.kernel.crypto.securityhandler.StandardHandlerUsingStandard40

computeUserPassword

Methods inherited from class com.itextpdf.kernel.crypto.securityhandler.StandardSecurityHandler

equalsArray, generateOwnerPasswordIfNullOrEmpty, getIsoBytes, getPermissions, isUsedOwnerPassword, setPermissions, setStandardHandlerDicEntries

Methods inherited from class com.itextpdf.kernel.crypto.securityhandler.SecurityHandler

getMkey, getNextObjectKey, initMd5MessageDigest

Methods inherited from class java.lang.Object

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

Field Detail

salt

private static final byte[] salt

Constructor Detail

StandardHandlerUsingAes128

public StandardHandlerUsingAes128(PdfDictionary encryptionDictionary,
                                  byte[] userPassword,
                                  byte[] ownerPassword,
                                  int permissions,
                                  boolean encryptMetadata,
                                  boolean embeddedFilesOnly,
                                  byte[] documentId)

StandardHandlerUsingAes128

public StandardHandlerUsingAes128(PdfDictionary encryptionDictionary,
                                  byte[] password,
                                  byte[] documentId,
                                  boolean encryptMetadata)

Method Detail

getEncryptionStream

public OutputStreamEncryption getEncryptionStream(java.io.OutputStream os)

Description copied from class: SecurityHandler

Gets a stream wrapper, responsible for encryption.

Overrides:

getEncryptionStream in class StandardHandlerUsingStandard40

Parameters:

os - OutputStream to be wrapped

Returns:

OutputStreamEncryption, responsible for encryption.

getDecryptor

public IDecryptor getDecryptor()

Description copied from class: SecurityHandler

Gets decryptor object.

Overrides:

getDecryptor in class StandardHandlerUsingStandard40

Returns:

IDecryptor

setHashKeyForNextObject

public void setHashKeyForNextObject(int objNumber,
                                    int objGeneration)

Description copied from class: SecurityHandler

Note: For most of the supported security handlers algorithm to calculate encryption key for particular object is the same.

Overrides:

setHashKeyForNextObject in class SecurityHandler

Parameters:

objNumber - number of particular object for encryption

objGeneration - generation of particular object for encryption

setSpecificHandlerDicEntries

protected void setSpecificHandlerDicEntries(PdfDictionary encryptionDictionary,
                                            boolean encryptMetadata,
                                            boolean embeddedFilesOnly)

Overrides:

setSpecificHandlerDicEntries in class StandardHandlerUsingStandard128