Package org.openpdf.renderer.decrypt

Class PDFDecrypterFactory

java.lang.Object

org.openpdf.renderer.decrypt.PDFDecrypterFactory

@Deprecated
public class PDFDecrypterFactory
extends Object

Deprecated.

Produces a PDFDecrypter for documents given a (possibly non-existent) Encrypt dictionary. Supports decryption of versions 1, 2 and 4 of the password-based encryption mechanisms as described in PDF Reference version 1.7. This means that it supports RC4 and AES encryption with keys of 40-128 bits; esentially, password-protected documents with compatibility up to Acrobat 8.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CF_IDENTITY	Deprecated. The name of the standard Identity CryptFilter
private static final int	DEFAULT_KEY_LENGTH	Deprecated. Default key length for versions where key length is optional

Constructor Summary

Constructors

Constructor	Description
PDFDecrypterFactory()	Deprecated.

Method Summary

Modifier and Type	Method	Description
static PDFDecrypter	createDecryptor(PDFObject encryptDict, PDFObject documentId, PDFPassword password)	Deprecated. Create a decryptor for a given encryption dictionary.
static boolean	isFilterExist(PDFObject encryptDict)	Deprecated.

Methods inherited from class java.lang.Object

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

Field Details

CF_IDENTITY

public static final String CF_IDENTITY

Deprecated.

The name of the standard Identity CryptFilter

See Also:

• Constant Field Values

DEFAULT_KEY_LENGTH

private static final int DEFAULT_KEY_LENGTH

Deprecated.

Default key length for versions where key length is optional

See Also:

• Constant Field Values

Constructor Details

PDFDecrypterFactory

public PDFDecrypterFactory()

Deprecated.

Method Details

createDecryptor

public static PDFDecrypter createDecryptor(PDFObject encryptDict,
 PDFObject documentId,
 PDFPassword password)
                                    throws IOException,
EncryptionUnsupportedByPlatformException,
EncryptionUnsupportedByProductException,
PDFAuthenticationFailureException

Deprecated.

Create a decryptor for a given encryption dictionary. A check is immediately performed that the supplied password decrypts content described by the encryption specification.

Parameters:

encryptDict - the Encrypt dict as found in the document's trailer. May be null, in which case the IdentityDecrypter will be returned.

documentId - the object with key "ID" in the trailer's dictionary. Should always be present if Encrypt is.

password - the password to use; may be null

Returns:

The decryptor that should be used for all encrypted data in the PDF

Throws:

IOException - will typically be a PDFParseException, indicating an IO problem, an error in the structure of the document, or a failure to obtain various ciphers from the installed JCE providers

EncryptionUnsupportedByPlatformException - if the encryption is not supported by the environment in which the code is executing

EncryptionUnsupportedByProductException - if PDFRenderer does not currently support the specified encryption

PDFAuthenticationFailureException - if the supplied password was not able to

isFilterExist

public static boolean isFilterExist(PDFObject encryptDict)

Deprecated.

Parameters:

encryptDict - the Encrypt dict as found in the document's trailer.

Returns:

true if the Filter exist in the current dictionary