Allow PDFs be encrypted, i.e. blocking editing with a random owner password, while still allowing viewing them without needing a password.
Although it is the responsibility of the PDF software to actually block editing when there is no password required for decrypting the file for viewing, this is an improvement we want to add. There has been reasoning that this might be regarded sufficient for tax authorities to accept donation receipts as being forgery-proof.
The tool for encrypting PDF files in the exporters is PDFtk which needs to be installed on the server.
Note: Encryption has not been implemented for the Merged PDF exporter, which created a single PDF file by merging all receipts into it. The resulting file will not be encrypted as the exporter's purpose is preparation for printing and the merged PDF file is usually not given out to donors.
Allow PDFs be encrypted, i.e. blocking editing with a random owner password, while still allowing viewing them without needing a password.
Although it is the responsibility of the PDF software to actually block editing when there is no password required for decrypting the file for viewing, this is an improvement we want to add. There has been reasoning that this might be regarded sufficient for tax authorities to accept donation receipts as being forgery-proof.
The tool for encrypting PDF files in the exporters is PDFtk which needs to be installed on the server.
Note: Encryption has not been implemented for the Merged PDF exporter, which created a single PDF file by merging all receipts into it. The resulting file will not be encrypted as the exporter's purpose is preparation for printing and the merged PDF file is usually not given out to donors.