We are a small to medium sized business and have our employee's public keys in a shared network read-only folder. We are using self-signed digital signatures created in Acrobat 9 and X.
My understanding is that the digital signatures expire after 5 years.
- How do we validate a document that was signed but now that digital signature has expired?
- Do we need to keep all the public keys including the old expired and newly created versions?
- Aren't the file names the same? How do we keep them in the same folder with identical filenames?