diff options
Diffstat (limited to 'include/qpdf/QPDF.hh')
| -rw-r--r-- | include/qpdf/QPDF.hh | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/include/qpdf/QPDF.hh b/include/qpdf/QPDF.hh index 7028bf1c..beb5cb7e 100644 --- a/include/qpdf/QPDF.hh +++ b/include/qpdf/QPDF.hh @@ -224,7 +224,7 @@ class QPDF // Encryption support - enum encryption_method_e { e_none, e_unknown, e_rc4, e_aes }; + enum encryption_method_e { e_none, e_unknown, e_rc4, e_aes, e_aesv3 }; class EncryptionData { public: @@ -326,7 +326,7 @@ class QPDF QPDF_DLL static std::string compute_data_key( std::string const& encryption_key, int objid, int generation, - bool use_aes); + bool use_aes, int encryption_V, int encryption_R); QPDF_DLL static std::string compute_encryption_key( std::string const& password, EncryptionData const& data); @@ -337,6 +337,14 @@ class QPDF int V, int R, int key_len, int P, bool encrypt_metadata, std::string const& id1, std::string& O, std::string& U); + QPDF_DLL + static void compute_encryption_parameters_V5( + char const* user_password, char const* owner_password, + int V, int R, int key_len, int P, bool encrypt_metadata, + std::string const& id1, + std::string& encryption_key, + std::string& O, std::string& U, + std::string& OE, std::string& UE, std::string& Perms); // Return the full user password as stored in the PDF file. If // you are attempting to recover the user password in a // user-presentable form, call getTrimmedUserPassword() instead. @@ -345,6 +353,10 @@ class QPDF // Return human-readable form of user password. QPDF_DLL std::string getTrimmedUserPassword() const; + // Return the previously computed or retrieved encryption key for + // this file + QPDF_DLL + std::string getEncryptionKey() const; // Linearization support @@ -628,6 +640,13 @@ class QPDF void initializeEncryption(); std::string getKeyForObject(int objid, int generation, bool use_aes); void decryptString(std::string&, int objid, int generation); + static std::string compute_encryption_key_from_password( + std::string const& password, EncryptionData const& data); + static std::string recover_encryption_key_with_password( + std::string const& password, EncryptionData const& data); + static std::string recover_encryption_key_with_password( + std::string const& password, EncryptionData const& data, + bool& perms_valid); void decryptStream( Pipeline*& pipeline, int objid, int generation, QPDFObjectHandle& stream_dict, @@ -981,6 +1000,7 @@ class QPDF std::ostream* err_stream; bool attempt_recovery; int encryption_V; + int encryption_R; bool encrypt_metadata; std::map<std::string, encryption_method_e> crypt_filters; encryption_method_e cf_stream; |