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Diffstat (limited to 'vcl/source/gdi/pdfwriter_impl.hxx')
-rw-r--r--vcl/source/gdi/pdfwriter_impl.hxx172
1 files changed, 58 insertions, 114 deletions
diff --git a/vcl/source/gdi/pdfwriter_impl.hxx b/vcl/source/gdi/pdfwriter_impl.hxx
index 9457aea5f0c2..5702bee23ea5 100644
--- a/vcl/source/gdi/pdfwriter_impl.hxx
+++ b/vcl/source/gdi/pdfwriter_impl.hxx
@@ -58,6 +58,7 @@ class ImplFontSelectData;
class ImplFontMetricData;
class FontSubsetInfo;
class ZCodec;
+class EncHashTransporter;
// the maximum password length
#define ENCRYPTED_PWD_SIZE 32
@@ -595,7 +596,6 @@ private:
MapMode m_aMapMode; // PDFWriterImpl scaled units
std::vector< PDFPage > m_aPages;
- PDFDocInfo m_aDocInfo;
/* maps object numbers to file offsets (needed for xref) */
std::vector< sal_uInt64 > m_aObjects;
/* contains Bitmaps until they are written to the
@@ -796,116 +796,37 @@ i12626
/* used to cipher the stream data and for password management */
rtlCipher m_aCipher;
rtlDigest m_aDigest;
-/* pad string used for password in Standard security handler */
- sal_uInt8 m_nPadString[ENCRYPTED_PWD_SIZE];
-/* the owner password, in clear text */
- rtl::OUString m_aOwnerPassword;
-/* the padded owner password */
- sal_uInt8 m_nPaddedOwnerPassword[ENCRYPTED_PWD_SIZE];
-/* the encryption dictionary owner password, according to algorithm 3.3 */
- sal_uInt8 m_nEncryptedOwnerPassword[ENCRYPTED_PWD_SIZE];
-/* the user password, in clear text */
- rtl::OUString m_aUserPassword;
-/* the padded user password */
- sal_uInt8 m_nPaddedUserPassword[ENCRYPTED_PWD_SIZE];
-/* the encryption dictionary user password, according to algorithm 3.4 or 3.5 depending on the
- security handler revision */
- sal_uInt8 m_nEncryptedUserPassword[ENCRYPTED_PWD_SIZE];
-
-/* the encryption key, formed with the user password according to algorithm 3.2, maximum length is 16 bytes + 3 + 2
- for 128 bit security */
- sal_uInt8 m_nEncryptionKey[MAXIMUM_RC4_KEY_LENGTH];
+ /* pad string used for password in Standard security handler */
+ static const sal_uInt8 s_nPadString[ENCRYPTED_PWD_SIZE];
+
+ /* the encryption key, formed with the user password according to algorithm 3.2, maximum length is 16 bytes + 3 + 2
+ for 128 bit security */
sal_Int32 m_nKeyLength; // key length, 16 or 5
sal_Int32 m_nRC4KeyLength; // key length, 16 or 10, to be input to the algorith 3.1
-/* set to true if the following stream must be encrypted, used inside writeBuffer() */
+ /* set to true if the following stream must be encrypted, used inside writeBuffer() */
sal_Bool m_bEncryptThisStream;
-/* the numerical value of the access permissions, according to PDF spec, must be signed */
+ /* the numerical value of the access permissions, according to PDF spec, must be signed */
sal_Int32 m_nAccessPermissions;
-/* the document ID, the raw MD5 hash */
- sal_uInt8 m_nDocID[MD5_DIGEST_SIZE];
-/* string buffer to hold document ID, this is the output string */
- rtl::OStringBuffer m_aDocID;
-/* string to hold the PDF creation date */
- rtl::OStringBuffer m_aCreationDateString;
-/* string to hold the PDF creation date, for PDF/A metadata */
- rtl::OStringBuffer m_aCreationMetaDateString;
-/* the buffer where the data are encrypted, dynamically allocated */
+ /* string to hold the PDF creation date */
+ rtl::OString m_aCreationDateString;
+ /* string to hold the PDF creation date, for PDF/A metadata */
+ rtl::OString m_aCreationMetaDateString;
+ /* the buffer where the data are encrypted, dynamically allocated */
sal_uInt8 *m_pEncryptionBuffer;
-/* size of the buffer */
+ /* size of the buffer */
sal_Int32 m_nEncryptionBufferSize;
-/* check and reallocate the buffer for encryption */
- sal_Bool checkEncryptionBufferSize( register sal_Int32 newSize )
- {
- if( m_nEncryptionBufferSize < newSize )
- {
-/* reallocate the buffer, the used function allocate as rtl_allocateMemory
- if the pointer parameter is NULL */
- m_pEncryptionBuffer = (sal_uInt8*)rtl_reallocateMemory( m_pEncryptionBuffer, newSize );
- if( m_pEncryptionBuffer )
- m_nEncryptionBufferSize = newSize;
- else
- m_nEncryptionBufferSize = 0;
- }
- return ( m_nEncryptionBufferSize != 0 );
- }
-/* init the internal pad string */
- void initPadString()
- {
- static const sal_uInt8 nPadString[32] =
- {
- 0x28, 0xBF, 0x4E, 0x5E, 0x4E, 0x75, 0x8A, 0x41, 0x64, 0x00, 0x4E, 0x56, 0xFF, 0xFA, 0x01, 0x08,
- 0x2E, 0x2E, 0x00, 0xB6, 0xD0, 0x68, 0x3E, 0x80, 0x2F, 0x0C, 0xA9, 0xFE, 0x64, 0x53, 0x69, 0x7A
- };
-
- for(sal_uInt32 i = 0; i < sizeof( nPadString ); i++ )
- m_nPadString[i] = nPadString[i];
-
- };
-/* initialize the encryption engine */
- void initEncryption();
-
-/* this function implements part of the PDF spec algorithm 3.1 in encryption, the rest (the actual encryption) is in PDFWriterImpl::writeBuffer */
- void checkAndEnableStreamEncryption( register sal_Int32 nObject )
- {
- if( m_aContext.Encrypt )
- {
- m_bEncryptThisStream = true;
- register sal_Int32 i = m_nKeyLength;
- m_nEncryptionKey[i++] = (sal_uInt8)nObject;
- m_nEncryptionKey[i++] = (sal_uInt8)( nObject >> 8 );
- m_nEncryptionKey[i++] = (sal_uInt8)( nObject >> 16 );
-//the other location of m_nEncryptionKey are already set to 0, our fixed generation number
-// do the MD5 hash
- sal_uInt8 nMD5Sum[ RTL_DIGEST_LENGTH_MD5 ];
- // the i+2 to take into account the generation number, always zero
- rtl_digest_MD5( &m_nEncryptionKey, i+2, nMD5Sum, sizeof(nMD5Sum) );
-// initialize the RC4 with the key
-// key legth: see algoritm 3.1, step 4: (N+5) max 16
- rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, nMD5Sum, m_nRC4KeyLength, NULL, 0 );
- }
- };
+ /* check and reallocate the buffer for encryption */
+ sal_Bool checkEncryptionBufferSize( register sal_Int32 newSize );
+ /* this function implements part of the PDF spec algorithm 3.1 in encryption, the rest (the actual encryption) is in PDFWriterImpl::writeBuffer */
+ void checkAndEnableStreamEncryption( register sal_Int32 nObject );
void disableStreamEncryption() { m_bEncryptThisStream = false; };
-/* */
- void enableStringEncryption( register sal_Int32 nObject )
- {
- register sal_Int32 i = m_nKeyLength;
- m_nEncryptionKey[i++] = (sal_uInt8)nObject;
- m_nEncryptionKey[i++] = (sal_uInt8)( nObject >> 8 );
- m_nEncryptionKey[i++] = (sal_uInt8)( nObject >> 16 );
-//the other location of m_nEncryptionKey are already set to 0, our fixed generation number
-// do the MD5 hash
- sal_uInt8 nMD5Sum[ RTL_DIGEST_LENGTH_MD5 ];
- // the i+2 to take into account the generation number, always zero
- rtl_digest_MD5( &m_nEncryptionKey, i+2, nMD5Sum, sizeof(nMD5Sum) );
-// initialize the RC4 with the key
-// key legth: see algoritm 3.1, step 4: (N+5) max 16
- rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, nMD5Sum, m_nRC4KeyLength, NULL, 0 );
- };
+ /* */
+ void enableStringEncryption( register sal_Int32 nObject );
// test if the encryption is active, if yes than encrypt the unicode string and add to the OStringBuffer parameter
void appendUnicodeTextStringEncrypt( const rtl::OUString& rInString, const sal_Int32 nInObjectNumber, rtl::OStringBuffer& rOutBuffer );
@@ -1097,18 +1018,38 @@ i12626
sal_Bool m_bIsPDF_A1;
PDFWriter& m_rOuterFace;
-/*
-i12626
-methods for PDF security
-
- pad a password according algorithm 3.2, step 1 */
- void padPassword( const rtl::OUString aPassword, sal_uInt8 *paPasswordTarget );
-/* algorithm 3.2: compute an encryption key */
- void computeEncryptionKey( sal_uInt8 *paThePaddedPassword, sal_uInt8 *paEncryptionKey );
-/* algorithm 3.3: computing the encryption dictionary'ss owner password value ( /O ) */
- void computeODictionaryValue();
-/* algorithm 3.4 or 3.5: computing the encryption dictionary's user password value ( /U ) revision 2 or 3 of the standard security handler */
- void computeUDictionaryValue();
+ /*
+ i12626
+ methods for PDF security
+
+ pad a password according algorithm 3.2, step 1 */
+ static void padPassword( const rtl::OUString& i_rPassword, sal_uInt8* o_pPaddedPW );
+ /* algorithm 3.2: compute an encryption key */
+ static bool computeEncryptionKey( EncHashTransporter*,
+ vcl::PDFWriter::PDFEncryptionProperties& io_rProperties,
+ sal_Int32 i_nAccessPermissions
+ );
+ /* algorithm 3.3: computing the encryption dictionary'ss owner password value ( /O ) */
+ static bool computeODictionaryValue( const sal_uInt8* i_pPaddedOwnerPassword, const sal_uInt8* i_pPaddedUserPassword,
+ std::vector< sal_uInt8 >& io_rOValue,
+ sal_Int32 i_nKeyLength
+ );
+ /* algorithm 3.4 or 3.5: computing the encryption dictionary's user password value ( /U ) revision 2 or 3 of the standard security handler */
+ static bool computeUDictionaryValue( EncHashTransporter* i_pTransporter,
+ vcl::PDFWriter::PDFEncryptionProperties& io_rProperties,
+ sal_Int32 i_nKeyLength,
+ sal_Int32 i_nAccessPermissions
+ );
+
+ static void computeDocumentIdentifier( std::vector< sal_uInt8 >& o_rIdentifier,
+ const vcl::PDFWriter::PDFDocInfo& i_rDocInfo,
+ rtl::OString& o_rCString1,
+ rtl::OString& o_rCString2
+ );
+ static sal_Int32 computeAccessPermissions( const vcl::PDFWriter::PDFEncryptionProperties& i_rProperties,
+ sal_Int32& o_rKeyLength, sal_Int32& o_rRC4KeyLength );
+ void setupDocInfo();
+ bool prepareEncryption( const com::sun::star::uno::Reference< com::sun::star::beans::XMaterialHolder >& );
// helper for playMetafile
void implWriteGradient( const PolyPolygon& rPolyPoly, const Gradient& rGradient,
@@ -1117,9 +1058,14 @@ methods for PDF security
VirtualDevice* pDummyVDev, const vcl::PDFWriter::PlayMetafileContext& );
public:
- PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, PDFWriter& );
+ PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, const com::sun::star::uno::Reference< com::sun::star::beans::XMaterialHolder >&, PDFWriter& );
~PDFWriterImpl();
+ static com::sun::star::uno::Reference< com::sun::star::beans::XMaterialHolder >
+ initEncryption( const rtl::OUString& i_rOwnerPassword,
+ const rtl::OUString& i_rUserPassword,
+ bool b128Bit );
+
/* for OutputDevice so the reference device can have a list
* that contains only suitable fonts (subsettable or builtin)
* produces a new font list
@@ -1152,8 +1098,6 @@ public:
}
PDFWriter::PDFVersion getVersion() const { return m_aContext.Version; }
- void setDocInfo( const PDFDocInfo& rInfo );
- const PDFDocInfo& getDocInfo() const { return m_aDocInfo; }
void setDocumentLocale( const com::sun::star::lang::Locale& rLoc )
{ m_aContext.DocumentLocale = rLoc; }
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-30 18:48:29 +0000