org.sejda.sambox.pdmodel.encryption

Class PublicKeyProtectionPolicy

java.lang.Object

org.sejda.sambox.pdmodel.encryption.ProtectionPolicy

org.sejda.sambox.pdmodel.encryption.PublicKeyProtectionPolicy

public final class PublicKeyProtectionPolicy
extends ProtectionPolicy

The protection policy to use to protect a document with the public key security handler. PDF documents are encrypted so that they can be decrypted by one or more recipients. Each recipient have its own access permission. The following code sample shows how to protect a document using the public key security handler. In this code sample, doc is a PDDocument object.

 PublicKeyProtectionPolicy policy = new PublicKeyProtectionPolicy();
 PublicKeyRecipient recip = new PublicKeyRecipient();
 AccessPermission ap = new AccessPermission();
 ap.setCanModify(false);
 recip.setPermission(ap);

 // load the recipient's certificate
 InputStream inStream = new FileInputStream(certificate_path);
 CertificateFactory cf = CertificateFactory.getInstance("X.509");
 X509Certificate certificate = (X509Certificate)cf.generateCertificate(inStream);
 inStream.close();

 recip.setX509(certificate); // set the recipient's certificate
 policy.addRecipient(recip);
 policy.setEncryptionKeyLength(128); // the document will be encrypted with 128 bits secret key
 doc.protect(policy);
 doc.save(out);
 

Author:

Benoit Guillon

See Also:

AccessPermission, PublicKeyRecipient

Field Summary

Fields

Modifier and Type	Field and Description
List<PublicKeyRecipient>	recipients

Constructor Summary

Constructors

Constructor and Description
PublicKeyProtectionPolicy() Creates a new PublicKeyProtectionPolicy with an empty recipients list.

Method Summary

Modifier and Type	Method and Description
void	addRecipient(PublicKeyRecipient recipient) Adds a new recipient to the recipients list.
X509Certificate	getDecryptionCertificate() Returns the decryption certificate.
int	getNumberOfRecipients() Returns the number of recipients
Iterator<PublicKeyRecipient>	getRecipientsIterator() Returns an iterator to browse the list of recipients.
boolean	removeRecipient(PublicKeyRecipient recipient) Removes a recipient from the recipients list.
void	setDecryptionCertificate(X509Certificate decryptionCertificate) Sets the decryption certificate

Methods inherited from class org.sejda.sambox.pdmodel.encryption.ProtectionPolicy

getEncryptionKeyLength, setEncryptionKeyLength

Methods inherited from class java.lang.Object

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

Field Detail

recipients

public final List<PublicKeyRecipient> recipients

Constructor Detail

PublicKeyProtectionPolicy

public PublicKeyProtectionPolicy()

Creates a new PublicKeyProtectionPolicy with an empty recipients list.

Method Detail

addRecipient

public void addRecipient(PublicKeyRecipient recipient)

Adds a new recipient to the recipients list.

Parameters:

recipient - A new recipient.

removeRecipient

public boolean removeRecipient(PublicKeyRecipient recipient)

Removes a recipient from the recipients list.

Parameters:

recipient - The recipient to remove.

Returns:

true If a recipient was found and removed.

getRecipientsIterator

public Iterator<PublicKeyRecipient> getRecipientsIterator()

Returns an iterator to browse the list of recipients. Object found in this iterator are PublicKeyRecipient.

Returns:

The recipients list iterator.

getDecryptionCertificate

public X509Certificate getDecryptionCertificate()

Returns the decryption certificate.

Returns:

the decryption certificate

setDecryptionCertificate

public void setDecryptionCertificate(X509Certificate decryptionCertificate)

Sets the decryption certificate

Parameters:

decryptionCertificate - the new decryption certificate.

getNumberOfRecipients

public int getNumberOfRecipients()

Returns the number of recipients

Returns:

the number of recipients