SetEncryptedPayloadFromFile

Security and encryption

Description

Stores the complete bytes of an encrypted PDF file as the associated payload of the selected unencrypted PDF

Function TPDFlib.SetEncryptedPayloadFromFile(Const FileName, Subtype, PayloadVersion: WideString): Integer;

Function PDFlib::SetEncryptedPayloadFromFile(FileName As String, Subtype As String, PayloadVersion As String) As Long

int DLSetEncryptedPayloadFromFile(int InstanceID, const wchar_t* FileName, const wchar_t* Subtype, const wchar_t* PayloadVersion);

FileName	Path to the complete encrypted PDF payload
Subtype	PDF name identifying the encryption handler, such as `Standard`
PayloadVersion	Optional PDF name identifying the handler version

1	The payload was added
0	The file, metadata, selected document, or wrapper state was invalid

The wrapper uses PDF 2.0 /EncryptedPayload, /AF, /EmbeddedFiles, and a hidden collection whose initial document is the payload

The outer document must remain unencrypted and cannot enable PDF MAC; only one encrypted payload is permitted