8/9/2023 0 Comments Sign pdf on ubuntuThanks to the free software projects & developers who made this possible. 5: Signature present in hardware token visible on the PDF backend settings. You can also see the details of the hardware token in PDF backend settings.įig.Signature will be placed on a new PDF file (with suffix -signed) and it will open automatically.3: Add digital signature by drawing a rectangle. Note that, since Poppler 22.03, it is also possible to insert signature in a designated field.įig. Click & drag a square area where you need to place the signature and choose the certificate.2: Digital token password prompt when adding digital sign in the PDF document. This should prompt for the hardware token password.įig.Add digitial signature using menu Tools → Digitally Sign Start the smart card service (usually auto-started, you won’t have to do this): either pcsc_wd.service (for WatchData keys) or rvice.1: Okular PDF certificate database configuration. But why On current Ubuntu versions, it is not possible to import personal. Open Okular and go to Settings → Configure backend → PDF and choose/set the correct certificate database path, if not already set by default.įig. Simple Signer allows you to sign PDF files using a simple GUI.Assuming the latter, the nssdb would be located in the default profile directory $HOME/.mozilla/firefox// (check for existence of the file pkcs11.txt in that directory to be sure). There are 2 options to manage NSSDB: (i) manually by setting up $HOME/.pki/nssdb, or (ii) use the one automatically created by Firefox if you already use it.With all the other prerequisites (token driver installation etc.) in place, follow these steps to get everything working nicely. ![]() Trying to make the hardware token work with Okular gave me some more insights. This blog post written a couple of years ago about using hardware token in GNU/Linux is still actively referred by many users. Turns out, poppler uses nss ( Network Security Services, a Mozilla project) for managing the certificates, and if the token is enrolled in NSS database, Okular should be able to just use it. When the main developer Albert asked for feedback on what important functionality would the community like to see incorporated as part this effort I had asked if it would be possible to use hardware tokens for digital signature. Recently, Poppler (the free software library for rendering PDF used by Evince and Okular) and Okular in particular has gained a lot of improvements in displaying digital signature and actually signing a PDF document digitally (see this, this, this, this, this and this). A notorious use-case is digitally signing PDF documents. ![]() This is a love letter to libre software projects, and also a manual.įor a long time, one of the challenges in using libre software in ‘enterprise’ environments or working with Government documents is that one will eventually be forced to use a proprietary software that isn’t even available for a libre platform like GNU/Linux. And it is now possible to digitally sign a PDF document using libre software. $ gpg -clearsign -output=sign_file.pdf file.We are living in 2022. Recommended (options 3): In Ubuntu install apt-get install xournal as sign and sign all document by yours key. Not recommended (options 2): long way to install w$ on and use the latest Abode Reader DC or try to use deb installation. ![]() Not recommended (options 1): use deb installation commercial Foxit or online solution.
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