Examples of org.apache.pdfbox.exceptions.CryptographyException

org.apache.pdfbox.exceptions.CryptographyException
An exception that indicates that something has gone wrong during a cryptography operation. @author Ben Litchfield @version $Revision: 1.4 $

            this.openProtection(m);
            document.dereferenceObjectStreams();
        }
        catch(BadSecurityHandlerException e)
        {
            throw new CryptographyException(e);
        }
    }

View Full Code Here

                new StandardProtectionPolicy(ownerPassword, userPassword, new AccessPermission());
            this.protect(policy);
        }
        catch(BadSecurityHandlerException e)
        {
            throw new CryptographyException(e);
        }
    }

View Full Code Here

            this.openProtection(m);
            document.dereferenceObjectStreams();
        }
        catch(BadSecurityHandlerException e)
        {
            throw new CryptographyException(e);
        }
    }

View Full Code Here

                new StandardProtectionPolicy(ownerPassword, userPassword, new AccessPermission());
            this.protect(policy);
        }
        catch(BadSecurityHandlerException e)
        {
            throw new CryptographyException(e);
        }
    }

View Full Code Here

            DecryptionMaterial decryptionMaterial)
        throws CryptographyException, IOException
    {
        if(!(decryptionMaterial instanceof StandardDecryptionMaterial))
        {
            throw new CryptographyException("Provided decryption material is not compatible with the document");
        }


        StandardDecryptionMaterial material = (StandardDecryptionMaterial)decryptionMaterial;


        String password = material.getPassword();
        if(password == null)
        {
            password = "";
        }


        int dicPermissions = encDictionary.getPermissions();
        int dicRevision = encDictionary.getRevision();
        int dicLength = encDictionary.getLength()/8;


        //some documents may have not document id, see
        //test\encryption\encrypted_doc_no_id.pdf
        byte[] documentIDBytes = null;
        if( documentIDArray != null && documentIDArray.size() >= 1 )
        {
            COSString id = (COSString)documentIDArray.getObject( 0 );
            documentIDBytes = id.getBytes();
        }
        else
        {
            documentIDBytes = new byte[0];
        }


        // we need to know whether the meta data was encrypted for password calculation
        boolean encryptMetadata = encDictionary.isEncryptMetaData();
        
        byte[] u = encDictionary.getUserKey();
        byte[] o = encDictionary.getOwnerKey();


        boolean isUserPassword =
            isUserPassword(
                password.getBytes("ISO-8859-1"),
                u,
                o,
                dicPermissions,
                documentIDBytes,
                dicRevision,
                dicLength,
                encryptMetadata);
        boolean isOwnerPassword =
            isOwnerPassword(
                password.getBytes("ISO-8859-1"),
                u,
                o,
                dicPermissions,
                documentIDBytes,
                dicRevision,
                dicLength,
                encryptMetadata);


        if( isUserPassword )
        {
            currentAccessPermission = new AccessPermission( dicPermissions );
            encryptionKey =
                computeEncryptedKey(
                    password.getBytes("ISO-8859-1"),
                    o,
                    dicPermissions,
                    documentIDBytes,
                    dicRevision,
                    dicLength,
                    encryptMetadata );
        }
        else if( isOwnerPassword )
        {
            currentAccessPermission = AccessPermission.getOwnerAccessPermission();
            byte[] computedUserPassword = getUserPassword(password.getBytes("ISO-8859-1"),o,dicRevision,dicLength );
            encryptionKey =
                computeEncryptedKey(
                    computedUserPassword,
                    o,
                    dicPermissions,
                    documentIDBytes,
                    dicRevision,
                    dicLength,
                    encryptMetadata);
        }
        else
        {
            throw new CryptographyException(
                "Error: The supplied password does not match either the owner or user password in the document." );
        }


        // detect whether AES encryption is used. This assumes that the encryption algo is 
        // stored in the PDCryptFilterDictionary

View Full Code Here

                idArray.add( idString );
                document.getDocument().setDocumentID( idArray );
            }
            catch( NoSuchAlgorithmException e )
            {
                throw new CryptographyException( e );
            }
            catch(IOException e )
            {
                throw new CryptographyException( e );
            }
        }


        COSString id = (COSString)idArray.getObject( 0 );

View Full Code Here

                    digest = md.digest();
                }
            }
            if( encRevision == 2 && length != 5 )
            {
                throw new CryptographyException(
                    "Error: Expected length=5 actual=" + length );
            }


            //3.3 STEP 4
            byte[] rc4Key = new byte[ (int)length ];
            System.arraycopy( digest, 0, rc4Key, 0, (int)length );


            //3.7 step 2
            if( encRevision == 2 )
            {
                rc4.setKey( rc4Key );
                rc4.write( o, result );
            }
            else if( encRevision == 3 || encRevision == 4)
            {
                byte[] iterationKey = new byte[ rc4Key.length ];
                byte[] otemp = new byte[ o.length ]; //sm
                System.arraycopy( o, 0, otemp, 0, o.length ); //sm
                rc4.write( o, result);//sm


                for( int i=19; i>=0; i-- )
                {
                    System.arraycopy( rc4Key, 0, iterationKey, 0, rc4Key.length );
                    for( int j=0; j< iterationKey.length; j++ )
                    {
                        iterationKey[j] = (byte)(iterationKey[j] ^ (byte)i);
                    }
                    rc4.setKey( iterationKey );
                    result.reset();  //sm
                    rc4.write( otemp, result ); //sm
                    otemp = result.toByteArray(); //sm
                }
            }
            return result.toByteArray();
        }
        catch( NoSuchAlgorithmException e )
        {
            throw new CryptographyException( e );
        }
    }

View Full Code Here

                }


                //step 7
                if( encRevision == 2 && length != 5 )
                {
                    throw new CryptographyException(
                        "Error: length should be 5 when revision is two actual=" + length );
                }
                System.arraycopy( digest, 0, result, 0, length );
            }
            catch( NoSuchAlgorithmException e )
            {
                throw new CryptographyException( e );
            }
            return result;
        }

View Full Code Here

                    result.reset();
                    result.write( finalResult );
                }
                catch( NoSuchAlgorithmException e )
                {
                    throw new CryptographyException( e );
                }
            }
            return result.toByteArray();
        }

View Full Code Here

                        digest = md.digest();
                    }
                }
                if( encRevision == 2 && length != 5 )
                {
                    throw new CryptographyException(
                        "Error: Expected length=5 actual=" + length );
                }


                //STEP 4
                byte[] rc4Key = new byte[ length ];
                System.arraycopy( digest, 0, rc4Key, 0, length );


                //STEP 5
                byte[] paddedUser = truncateOrPad( userPassword );




                //STEP 6
                rc4.setKey( rc4Key );
                ByteArrayOutputStream crypted = new ByteArrayOutputStream();
                rc4.write( new ByteArrayInputStream( paddedUser ), crypted );




                //STEP 7
                if( encRevision == 3 || encRevision == 4 )
                {
                    byte[] iterationKey = new byte[ rc4Key.length ];
                    for( int i=1; i<20; i++ )
                    {
                        System.arraycopy( rc4Key, 0, iterationKey, 0, rc4Key.length );
                        for( int j=0; j< iterationKey.length; j++ )
                        {
                            iterationKey[j] = (byte)(iterationKey[j] ^ (byte)i);
                        }
                        rc4.setKey( iterationKey );
                        ByteArrayInputStream input = new ByteArrayInputStream( crypted.toByteArray() );
                        crypted.reset();
                        rc4.write( input, crypted );
                    }
                }


                //STEP 8
                return crypted.toByteArray();
            }
            catch( NoSuchAlgorithmException e )
            {
                throw new CryptographyException( e.getMessage() );
            }
        }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.pdfbox.exceptions.CryptographyException

org.apache.pdfbox.encryption.DocumentEncryption

org.apache.pdfbox.encryption.PDFEncryption

org.apache.pdfbox.pdmodel.encryption.PublicKeySecurityHandler

org.apache.pdfbox.pdmodel.encryption.SecurityHandler

org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler

org.apache.pdfbox.pdmodel.PDDocument

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.