diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/encryption/PDEncryptionDictionary.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdmodel/encryption/PDEncryptionDictionary.java | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/encryption/PDEncryptionDictionary.java b/src/main/java/org/pdfbox/pdmodel/encryption/PDEncryptionDictionary.java deleted file mode 100644 index 08f18fb..0000000 --- a/src/main/java/org/pdfbox/pdmodel/encryption/PDEncryptionDictionary.java +++ /dev/null @@ -1,193 +0,0 @@ -/**
- * Copyright (c) 2003, www.pdfbox.org
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of pdfbox; nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://www.pdfbox.org
- *
- */
-package org.pdfbox.pdmodel.encryption;
-
-import org.pdfbox.cos.COSDictionary;
-import org.pdfbox.cos.COSInteger;
-import org.pdfbox.cos.COSName;
-import org.pdfbox.cos.COSNumber;
-
-/**
- * This represents the base class for encryption dictionaries. All PDF implementations
- * are expected to implement the Standard encryption algorithm, but others can be plugged in.
- *
- * See PDF Reference 1.4 section "3.5 Encryption"
- *
- * @author Ben Litchfield (ben@csh.rit.edu)
- * @version $Revision: 1.5 $
- */
-public abstract class PDEncryptionDictionary
-{
- /**
- * See PDF Reference 1.4 Table 3.13.
- */
- public static final int VERSION0_UNDOCUMENTED_UNSUPPORTED = 0;
- /**
- * See PDF Reference 1.4 Table 3.13.
- */
- public static final int VERSION1_40_BIT_ALGORITHM = 1;
- /**
- * See PDF Reference 1.4 Table 3.13.
- */
- public static final int VERSION2_VARIABLE_LENGTH_ALGORITHM = 2;
- /**
- * See PDF Reference 1.4 Table 3.13.
- */
- public static final int VERSION3_UNPUBLISHED_ALGORITHM = 3;
- /**
- * See PDF Reference 1.4 Table 3.13.
- */
- public static final int VERSION4_SECURITY_HANDLER = 4;
-
- /**
- * The default security handler.
- */
- public static final String DEFAULT_NAME = "Standard";
-
- /**
- * The default length for the encryption key.
- */
- public static final int DEFAULT_LENGTH = 40;
-
- /**
- * The default version, according to the PDF Reference.
- */
- public static final int DEFAULT_VERSION = VERSION0_UNDOCUMENTED_UNSUPPORTED;
-
- /**
- * The cos model wrapped object.
- */
- protected COSDictionary encryptionDictionary = null;
-
- /**
- * Constructor.
- *
- * @param dictionary The pre-existing encryption dictionary.
- */
- protected PDEncryptionDictionary( COSDictionary dictionary )
- {
- encryptionDictionary = dictionary;
- }
-
- /**
- * Constructor, sub classes need to fill out the required fields.
- */
- protected PDEncryptionDictionary()
- {
- encryptionDictionary = new COSDictionary();
- setLength( DEFAULT_LENGTH );
- setVersion( DEFAULT_VERSION );
- }
-
- /**
- * This will get the dictionary associated with this encryption dictionary.
- *
- * @return The COS dictionary that this object wraps.
- */
- public COSDictionary getCOSDictionary()
- {
- return encryptionDictionary;
- }
-
- /**
- * Read-only field of the encryption filter name. The default value is
- * "Standard" for the built in security handler.
- *
- * @return The name of the encryption handler.
- */
- public String getFilter()
- {
- String filter = DEFAULT_NAME;
- COSName cosFilter = (COSName)encryptionDictionary.getDictionaryObject( COSName.FILTER );
- if( cosFilter != null )
- {
- filter = cosFilter.getName();
- }
- return filter;
- }
-
- /**
- * This will return the V entry of the encryption dictionary.<br /><br />
- * See PDF Reference 1.4 Table 3.13.
- *
- * @return The encryption version to use.
- */
- public int getVersion()
- {
- int version = DEFAULT_VERSION;
- COSNumber cosVersion = (COSNumber)encryptionDictionary.getDictionaryObject( COSName.getPDFName( "V" ) );
- if( cosVersion != null )
- {
- version = cosVersion.intValue();
- }
- return version;
- }
-
- /**
- * This will set the V entry of the encryption dictionary.<br /><br />
- * See PDF Reference 1.4 Table 3.13. <br /><br/>
- * <b>Note: This value is used to decrypt the pdf document. If you change this when
- * the document is encrypted then decryption will fail!.</b>
- *
- * @param version The new encryption version.
- */
- public void setVersion( int version )
- {
- encryptionDictionary.setItem( COSName.getPDFName( "V" ), new COSInteger( version ) );
- }
-
- /**
- * This will return the Length entry of the encryption dictionary.<br /><br />
- * The length in <b>bits</b> for the encryption algorithm. This will return a multiple of 8.
- *
- * @return The length in bits for the encryption algorithm
- */
- public int getLength()
- {
- int length = DEFAULT_LENGTH;
- COSNumber cosLength = (COSNumber)encryptionDictionary.getDictionaryObject( COSName.LENGTH );
- if( cosLength != null )
- {
- length = cosLength.intValue();
- }
- return length;
- }
-
- /**
- * This will set the number of bits to use for the encryption algorithm.
- *
- * @param length The new key length.
- */
- public void setLength( int length )
- {
- encryptionDictionary.setItem( COSName.LENGTH, new COSInteger( length ) );
- }
-}
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