Are PGP signatures legally binding?
Simone van der Hof maintains the Digital Signature Law Survey adressing these issues. In short: digital signatures (such as provided by PGP) are only legally binding on their own under very specific situations in a few countries, if at all. In many countries this is rapidly changing though. Even if the digital signature is not binding in itself, in many jurisdictions one can arrange to accept valid digital signatures as binding via a prior agreement in writing. If you are going to be swapping many digitally-signed agreements with another party, this approach may be useful. You might want to check with a lawyer in your country if the digital signatures will be used for important or valuable contracts.
