diff options
Diffstat (limited to 'vcl/inc/pdf/PDFEncryptorR6.hxx')
| -rw-r--r-- | vcl/inc/pdf/PDFEncryptorR6.hxx | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/vcl/inc/pdf/PDFEncryptorR6.hxx b/vcl/inc/pdf/PDFEncryptorR6.hxx index 219796ccf0a5..a8812fefcd21 100644 --- a/vcl/inc/pdf/PDFEncryptorR6.hxx +++ b/vcl/inc/pdf/PDFEncryptorR6.hxx @@ -13,9 +13,12 @@ #include <string_view> #include <vector> #include <vcl/dllapi.h> +#include <pdf/IPDFEncryptor.hxx> namespace vcl::pdf { +class EncryptionHashTransporter; + /** Algorithm 2.B: Computing a hash (revision 6 and later) * * Described in ISO 32000-2:2020(E) - 7.6.4.3.4 @@ -107,6 +110,52 @@ VCL_DLLPUBLIC std::vector<sal_uInt8> createPerms(sal_Int32 nAccessPermissions, */ VCL_DLLPUBLIC size_t addPaddingToVector(std::vector<sal_uInt8>& rVector, size_t nBlockSize); +class EncryptionContext; + +/** IPDFEncryptor implementation of PDF encryption version 5 revision 6 added in PDF 2.0 + * + * The complete algorithm is defined in PDF 2.0 specification ISO 32000-2:2020(E) + */ +class VCL_DLLPUBLIC PDFEncryptorR6 : public IPDFEncryptor +{ + std::unique_ptr<EncryptionContext> m_pEncryptionContext; + sal_Int32 m_nAccessPermissions = 0; + +public: + PDFEncryptorR6(); + ~PDFEncryptorR6(); + + sal_Int32 getVersion() override { return 5; } + sal_Int32 getRevision() override { return 6; } + sal_Int32 getAccessPermissions() override { return m_nAccessPermissions; } + /** Key length - AES 256 bit */ + sal_Int32 getKeyLength() override { return 256 / 8; } + + std::vector<sal_uInt8> getEncryptedAccessPermissions(std::vector<sal_uInt8>& rKey) override; + + static void initEncryption(EncryptionHashTransporter& rEncryptionHashTransporter, + const OUString& i_rOwnerPassword, const OUString& i_rUserPassword); + + bool prepareEncryption( + const css::uno::Reference<css::beans::XMaterialHolder>& xEncryptionMaterialHolder, + PDFEncryptionProperties& rProperties) override; + + void setupKeysAndCheck(PDFEncryptionProperties& rProperties) override; + + sal_uInt64 calculateSizeIncludingHeader(sal_uInt64 nSize) override; + + void setupEncryption(std::vector<sal_uInt8>& rEncryptionKey, sal_Int32 nObject) override; + + void setupEncryptionWithIV(std::vector<sal_uInt8>& rInitvector, std::vector<sal_uInt8>& rIV); + + /** Encrypts using Algorithm 1.A: Encryption of data using the AES algorithms + * + * Described in ISO 32000-2:2020(E) - 7.6.3.3 + */ + void encrypt(const void* pInput, sal_uInt64 nInputSize, std::vector<sal_uInt8>& rOutput, + sal_uInt64 nOutputsSize) override; +}; + } // end vcl::pdf /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |