public class PdfEncryption extends PdfObjectWrapper<PdfDictionary>
Constructor and Description |
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PdfEncryption(byte[] userPassword, byte[] ownerPassword, int permissions, int encryptionType, byte[] documentId)
Creates the encryption.
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PdfEncryption(Certificate[] certs, int[] permissions, int encryptionType)
Creates the certificate encryption.
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PdfEncryption(PdfDictionary pdfDict, byte[] password, byte[] documentId) |
PdfEncryption(PdfDictionary pdfDict, Key certificateKey, Certificate certificate, String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess) |
Modifier and Type | Method and Description |
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byte[] |
computeUserPassword(byte[] ownerPassword)
Computes user password if standard encryption handler is used with Standard40, Standard128 or AES128 algorithm.
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static PdfObject |
createInfoId(byte[] id, boolean modified) |
byte[] |
decryptByteArray(byte[] b) |
byte[] |
encryptByteArray(byte[] b) |
void |
flush()
To manually flush a PdfObject behind this wrapper, you have to ensure that this object is added to the document, i.e.
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static byte[] |
generateNewDocumentId() |
int |
getCryptoMode() |
byte[] |
getDocumentId() |
OutputStreamEncryption |
getEncryptionStream(OutputStream os) |
Long |
getPermissions() |
boolean |
isEmbeddedFilesOnly() |
boolean |
isMetadataEncrypted() |
boolean |
isOpenedWithFullPermission() |
protected boolean |
isWrappedObjectMustBeIndirect()
Defines if the object behind this wrapper must be an indirect object in the resultant document.
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void |
setHashKeyForNextObject(int objNumber, int objGeneration) |
ensureObjectIsAddedToDocument, getPdfObject, isFlushed, makeIndirect, makeIndirect, markObjectAsIndirect, setForbidRelease, setModified, setPdfObject, unsetForbidRelease
public PdfEncryption(byte[] userPassword, byte[] ownerPassword, int permissions, int encryptionType, byte[] documentId)
userPassword
- the user password. Can be null or empty
ownerPassword
- the owner password. Can be null or empty
permissions
- the user permissions
encryptionType
- the type of encryption. It can be one of STANDARD_ENCRYPTION_40, STANDARD_ENCRYPTION_128 or ENCRYPTION_AES128. Optionally DO_NOT_ENCRYPT_METADATA can be ored to output the metadata in cleartext
PdfException
- if the document is already open
public PdfEncryption(Certificate[] certs, int[] permissions, int encryptionType)
certs
- the public certificates to be used for the encryption
permissions
- the user permissions for each of the certificates
encryptionType
- the type of encryption. It can be one of STANDARD_ENCRYPTION_40, STANDARD_ENCRYPTION_128 or ENCRYPTION_AES128.
PdfException
- if the document is already open
public PdfEncryption(PdfDictionary pdfDict, byte[] password, byte[] documentId)
public PdfEncryption(PdfDictionary pdfDict, Key certificateKey, Certificate certificate, String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess)
public static byte[] generateNewDocumentId()
public static PdfObject createInfoId(byte[] id, boolean modified)
public Long getPermissions()
public int getCryptoMode()
public boolean isMetadataEncrypted()
public boolean isEmbeddedFilesOnly()
public byte[] getDocumentId()
public void setHashKeyForNextObject(int objNumber, int objGeneration)
public OutputStreamEncryption getEncryptionStream(OutputStream os)
public byte[] encryptByteArray(byte[] b)
public byte[] decryptByteArray(byte[] b)
public boolean isOpenedWithFullPermission()
public byte[] computeUserPassword(byte[] ownerPassword)
ownerPassword
- owner password of the encrypted document.
public void flush()
PdfObject
behind this wrapper, you have to ensure that this object is added to the document, i.e. it has an indirect reference. Basically this means that before flushing you need to explicitly call PdfObjectWrapper.makeIndirect(PdfDocument)
. For example: wrapperInstance.makeIndirect(document).flush(); Note that not every wrapper require this, only those that have such warning in documentation.
flush
in class PdfObjectWrapper<PdfDictionary>
protected boolean isWrappedObjectMustBeIndirect()
PdfObjectWrapper
isWrappedObjectMustBeIndirect
in class PdfObjectWrapper<PdfDictionary>
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