Initial Requirements

These are the initial requirements for the software.

UI

Features:

• Drop or pick single file
• Display signing options depending on the file format (auto choose if only one available)
• Display current status of file
• Add signature to file
  • Signature preview / placement
  • Choosing from list of options
• Auto updates #47
• Allow error reporting #19

Technical requirements:

• Working build on all 3 platforms from the CI
• Brand identity and mockup
• README.md
• TDD
• Code signing for all platforms
• Production release

Documentation:

• Backend specification
• How to create a backend #20
• Testing methods #13
• Architecture #13
• Development process #21
• Release process

Nice to have:

• Dynamically loaded decoupled backends
• Backend package signing/backends downloaded separately #48

eiDAS backend

Features:

• Working out of the box with any PKCS#11 store like eID app (SK application for ID cards)
• Auto detecting PKCS#11
• Listing certificates and auto choosing certificate if there is only one
• Qualified Timestamps #6
• Validating (any number of) signatures on the document
• Adding (any number of) signatures to the document
• Supporting all file formats

Technical requirements:

• Should use (Digital Signature Service)[https://github.com/esig/dss]
• Has to be written in Java

Signature image to PDF backend

Features:

• Works out of the box on any PDF without any certificates etc.
• Allow placing on image preview of PDF.
• Allow placing on the selected page.

Technical requirements:

• Written in Go or other new programming language other than Java and Node.js

Paper

Topics not covered in the software:

• Legal status
• Computer Science foundations

Nice to have:

• Sustainability (economic)