Class PubKeySecurityHandler

java.lang.Object

com.itextpdf.kernel.crypto.securityhandler.SecurityHandler

com.itextpdf.kernel.crypto.securityhandler.PubKeySecurityHandler

Direct Known Subclasses:

PubSecHandlerUsingAes128, PubSecHandlerUsingStandard40

public abstract class PubKeySecurityHandler
extends SecurityHandler

Field Summary

Fields

Modifier and Type	Field	Description
private static final IBouncyCastleFactory	BOUNCY_CASTLE_FACTORY
private static final int	DEFAULT_KEY_LENGTH
private List<PublicKeyRecipient>	recipients
private byte[]	seed
private static final int	SEED_LENGTH

Fields inherited from class SecurityHandler

extra, md5, mkey, nextObjectKey, nextObjectKeySize

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PubKeySecurityHandler()

Method Summary

Modifier and Type	Method	Description
protected void	addAllRecipients(Certificate[] certs, int[] permissions)
private void	addRecipient(Certificate cert, int permission)
protected byte[]	computeGlobalKey(String messageDigestAlgorithm, boolean encryptMetadata)
protected static byte[]	computeGlobalKeyOnReading(PdfDictionary encryptionDictionary, PrivateKey certificateKey, Certificate certificate, String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess, boolean encryptMetadata, String digestAlgorithm)
private IKeyTransRecipientInfo	computeRecipientInfo(X509Certificate x509Certificate, byte[] abyte0)
private IASN1Primitive	createDERForRecipient(byte[] in, X509Certificate cert)
protected PdfArray	createRecipientsArray()
protected abstract String	getDigestAlgorithm()
private byte[]	getEncodedRecipient(int index)
private PdfArray	getEncodedRecipients()
private int	getKeyLength(PdfDictionary encryptionDict)
private int	getRecipientsSize()
private byte[]	getSeed()
protected abstract void	initKey(byte[] globalKey, int keyLength)
protected void	initKeyAndFillDictionary(PdfDictionary encryptionDictionary, Certificate[] certs, int[] permissions, boolean encryptMetadata, boolean embeddedFilesOnly)
protected void	initKeyAndReadDictionary(PdfDictionary encryptionDictionary, Key certificateKey, Certificate certificate, String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess, boolean encryptMetadata)
protected abstract void	setPubSecSpecificHandlerDicEntries(PdfDictionary encryptionDictionary, boolean encryptMetadata, boolean embeddedFilesOnly)

Methods inherited from class SecurityHandler

getDecryptor, getEncryptionStream, getMkey, getNextObjectKey, initMd5MessageDigest, setHashKeyForNextObject

Methods inherited from class Object

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

Field Details

BOUNCY_CASTLE_FACTORY

private static final IBouncyCastleFactory BOUNCY_CASTLE_FACTORY

SEED_LENGTH

private static final int SEED_LENGTH

See Also:

• Constant Field Values

DEFAULT_KEY_LENGTH

private static final int DEFAULT_KEY_LENGTH

See Also:

• Constant Field Values

recipients

private List<PublicKeyRecipient> recipients

seed

private byte[] seed

Constructor Details

PubKeySecurityHandler

protected PubKeySecurityHandler()

Method Details

computeGlobalKey

protected byte[] computeGlobalKey(String messageDigestAlgorithm,
 boolean encryptMetadata)

computeGlobalKeyOnReading

protected static byte[] computeGlobalKeyOnReading(PdfDictionary encryptionDictionary,
 PrivateKey certificateKey,
 Certificate certificate,
 String certificateKeyProvider,
 IExternalDecryptionProcess externalDecryptionProcess,
 boolean encryptMetadata,
 String digestAlgorithm)

addAllRecipients

protected void addAllRecipients(Certificate[] certs,
 int[] permissions)

createRecipientsArray

protected PdfArray createRecipientsArray()

setPubSecSpecificHandlerDicEntries

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

getDigestAlgorithm

protected abstract String getDigestAlgorithm()

initKey

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

initKeyAndFillDictionary

protected void initKeyAndFillDictionary(PdfDictionary encryptionDictionary,
 Certificate[] certs,
 int[] permissions,
 boolean encryptMetadata,
 boolean embeddedFilesOnly)

initKeyAndReadDictionary

protected void initKeyAndReadDictionary(PdfDictionary encryptionDictionary,
 Key certificateKey,
 Certificate certificate,
 String certificateKeyProvider,
 IExternalDecryptionProcess externalDecryptionProcess,
 boolean encryptMetadata)

addRecipient

private void addRecipient(Certificate cert,
 int permission)

getSeed

private byte[] getSeed()

getRecipientsSize

private int getRecipientsSize()

getEncodedRecipient

private byte[] getEncodedRecipient(int index)
                            throws IOException,
GeneralSecurityException

Throws:

IOException

GeneralSecurityException

getEncodedRecipients

private PdfArray getEncodedRecipients()

createDERForRecipient

private IASN1Primitive createDERForRecipient(byte[] in,
 X509Certificate cert)
                                      throws IOException,
GeneralSecurityException

Throws:

IOException

GeneralSecurityException

computeRecipientInfo

private IKeyTransRecipientInfo computeRecipientInfo(X509Certificate x509Certificate,
 byte[] abyte0)
                                             throws GeneralSecurityException,
IOException

Throws:

GeneralSecurityException

IOException

getKeyLength

private int getKeyLength(PdfDictionary encryptionDict)