Signature token

A signature token is the cryptographic object produced at the moment of signing that groups together: the document''s hash, the timestamp, the signer''s identifier, and the cryptographic signature itself (encrypted with the private key via PKI). This token is embedded in the final PDF according to the PAdES format and allows any verifier — judge, expert, auditor — to reconstruct proof of signature without depending on the platform. The token is self-sufficient: even if Certyneo disappeared, the signature would remain verifiable with a standard PDF reader (Acrobat Reader, pdfsig).