Package com.itextpdf.kernel.crypto.securityhandler

Class PubSecHandlerUsingAes128

java.lang.Object

com.itextpdf.kernel.crypto.securityhandler.SecurityHandler

com.itextpdf.kernel.crypto.securityhandler.PubKeySecurityHandler

com.itextpdf.kernel.crypto.securityhandler.PubSecHandlerUsingAes128

Direct Known Subclasses:

PubSecHandlerUsingAes256

       public class PubSecHandlerUsingAes128 extends PubKeySecurityHandler
      

Field Summary

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

extra, md5, mkey, nextObjectKey, nextObjectKeySize

Constructor Summary

Constructors

Constructor	Description
PubSecHandlerUsingAes128(PdfDictionary encryptionDictionary, Certificate[] certs, int[] permissions, boolean encryptMetadata, boolean embeddedFilesOnly)
PubSecHandlerUsingAes128(PdfDictionary encryptionDictionary, Key certificateKey, Certificate certificate, String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess, boolean encryptMetadata)

Method Summary

Modifier and Type	Method	Description
IDecryptor	getDecryptor()	Gets decryptor object.
protected String	getDigestAlgorithm()
OutputStreamEncryption	getEncryptionStream(OutputStream os)	Gets a stream wrapper, responsible for encryption.
protected void	initKey(byte[] globalKey, int keyLength)
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	setPubSecSpecificHandlerDicEntries(PdfDictionary encryptionDictionary, boolean encryptMetadata, boolean embeddedFilesOnly)

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

addAllRecipients, computeGlobalKey, computeGlobalKeyOnReading, createRecipientsArray, initKeyAndFillDictionary, initKeyAndReadDictionary

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

Constructor Details

PubSecHandlerUsingAes128

             public PubSecHandlerUsingAes128
             (PdfDictionary encryptionDictionary, Certificate[] certs, int[] permissions, boolean encryptMetadata, boolean embeddedFilesOnly)
            

PubSecHandlerUsingAes128

             public PubSecHandlerUsingAes128
             (PdfDictionary encryptionDictionary, Key certificateKey, Certificate certificate, String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess, boolean encryptMetadata)
            

Method Details

getEncryptionStream

             public OutputStreamEncryption getEncryptionStream
             (OutputStream os)
            

Description copied from class: SecurityHandler

Gets a stream wrapper, responsible for encryption.

Specified by:

getEncryptionStream in class SecurityHandler

Parameters:

os - OutputStream to be wrapped

Returns:

OutputStreamEncryption, responsible for encryption.

getDecryptor

             public IDecryptor getDecryptor()
            

Description copied from class: SecurityHandler

Gets decryptor object.

Specified by:

getDecryptor in class SecurityHandler

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

getDigestAlgorithm

             protected String getDigestAlgorithm()
            

Specified by:

getDigestAlgorithm in class PubKeySecurityHandler

initKey

             protected void initKey
             (byte[] globalKey, int keyLength)
            

Specified by:

initKey in class PubKeySecurityHandler

setPubSecSpecificHandlerDicEntries

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

Specified by:

setPubSecSpecificHandlerDicEntries in class PubKeySecurityHandler