Foxit PDF SDK
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Public Member Functions | |
virtual void * | CreateContext (const char *filter, const char *sub_filter, const char *encrypt_info)=0 |
A callback function used to create context for encryption and decryption. More... | |
virtual String | DecryptData (const void *decryptor, const void *encrypted_data, uint32 encrypted_data_len)=0 |
A callback function used to decrypt the encrypted data. More... | |
virtual bool | EncryptData (const void *context, int obj_num, int gen_num, const void *src_data, uint32 src_data_len, void *out_dst_buffer, uint32 *out_dst_buffer_len)=0 |
A callback function used to get encrypted data. More... | |
virtual String | FinishDecryptor (void *decryptor)=0 |
A callback function used to finish the decryption. More... | |
virtual SecurityHandler::CipherType | GetCipher (const void *context)=0 |
A callback function used to get the cipher type. More... | |
virtual uint32 | GetDecryptedSize (const void *context, uint32 src_data_size)=0 |
A callback function used to get the estimated decrypted data size. More... | |
virtual uint32 | GetEncryptedSize (const void *context, int obj_num, int gen_num, const void *src_data, uint32 src_data_len)=0 |
A callback function used to get the estimated encrypted size. More... | |
virtual String | GetEncryptKey (const void *context)=0 |
A callback function used to get the encryption key. More... | |
virtual PDFDoc::EncryptType | GetSecurityType () |
Get the encryption type of security callback. More... | |
virtual uint32 | GetUserPermissions (const void *context, uint32 user_permission)=0 |
A callback function used to get the user permissions. More... | |
virtual bool | IsOwner (const void *context)=0 |
A callback function used to check if current user is the owner of the PDF document. More... | |
virtual bool | ReleaseContext (void *context)=0 |
A callback function used to release the context for encryption and decryption. More... | |
virtual void * | StartDecryptor (const void *context, int obj_num, int gen_num)=0 |
A callback function used to start a decryption. More... | |
virtual bool | UseStandardCryptoMethod (const void *context) |
A callback function to check if to use stanard crypto method or custom crypto method. More... | |
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virtual void | Release ()=0 |
A callback function used to release current callback object itself. More... | |
This class represents a callback object for custom decryption and encryption. If user wants to use custom security callback, user should inherit this callback class and implement the pure virtual functions (as callback functions), and then register the custom security callback object to Foxit PDF SDK by function common::Library::RegisterSecurityCallback with with any custom filter name (following the PDF name conventions). Function common::Library::UnregisterSecurityCallback can be called to unregister the security callback object with the registered filter name.
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pure virtual |
A callback function used to create context for encryption and decryption.
[in] | filter | The filter name of the custom security callback object. |
[in] | sub_filter | The sub filter name that specifies the syntax of the encryption dictionary contents. |
[in] | encrypt_info | The encryption information of the PDF document. |
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pure virtual |
A callback function used to decrypt the encrypted data.
[in] | decryptor | The decryptor implemented and created by user, returned by callback function CustomSecurityCallback::StartDecryptor. |
[in] | encrypted_data | The buffer which stores the encrypted data. |
[in] | encrypted_data_len | The length of encrypted data, in bytes. |
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pure virtual |
A callback function used to get encrypted data.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
[in] | obj_num | The object number for a PDF object. |
[in] | gen_num | The generation number for a PDF object. |
[in] | src_data | The buffer which stores the plain text to be encrypted. |
[in] | src_data_len | The length of the buffer. |
[out] | out_dst_buffer | Output parameter that receives the encrypted content. |
[out] | out_dst_buffer_len | Output parameter that receives the length of the encrypted data. |
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pure virtual |
A callback function used to finish the decryption.
[in] | decryptor | The decryptor implemented and created by user, returned by callback function CustomSecurityCallback::StartDecryptor. |
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pure virtual |
A callback function used to get the cipher type.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
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pure virtual |
A callback function used to get the estimated decrypted data size.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
[in] | src_data_size | Size of source data which is to be decrypted. |
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pure virtual |
A callback function used to get the estimated encrypted size.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
[in] | obj_num | The object number for a PDF object. |
[in] | gen_num | The generation number for a PDF object. |
[in] | src_data | The buffer which stores the plain text to be encrypted. |
[in] | src_data_len | The length of the buffer. |
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pure virtual |
A callback function used to get the encryption key.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
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inlinevirtual |
Get the encryption type of security callback.
Reimplemented from foxit::pdf::SecurityCallback.
Reimplemented in foxit::pdf::RMSSecurityCallback.
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pure virtual |
A callback function used to get the user permissions.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
[in] | user_permission | Original permission settings of the document. Please refer to values starting from PDFDoc::e_PermPrint and this would be one or combination of these values. |
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pure virtual |
A callback function used to check if current user is the owner of the PDF document.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
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pure virtual |
A callback function used to release the context for encryption and decryption.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
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pure virtual |
A callback function used to start a decryption.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |
[in] | obj_num | The object number for a PDF object. |
[in] | gen_num | The generation number for a PDF object. |
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inlinevirtual |
A callback function to check if to use stanard crypto method or custom crypto method.
[in] | context | The context for encryption and decryption, returned by callback function CustomSecurityCallback::CreateContext. |