ChaindocPAdES signature verification
Verify PAdES digital signatures in your PDF documents. Upload a signed PDF and Chaindoc validates the cryptographic integrity, certificate chain, timestamps, and eIDAS compliance using the EU DSS library.
Verify PDF Signature
Upload a signed PDF document to validate its digital signatures using EU DSS verification standards.
What PAdES verification checks
PAdES (PDF Advanced Electronic Signatures) is a standard defined by ETSI EN 319 142 that makes PDF signatures suitable for advanced electronic signatures. Chaindoc uses the EU Digital Signature Service (DSS) library to validate signatures against these standards.
Signature integrity
Confirms the PDF hasn't been modified after signing by recalculating and comparing cryptographic hashes.
Certificate validation
Checks the signing certificate's chain, validity period, and revocation status against trusted certificate authorities.
Timestamp verification
Validates embedded timestamps that prove when the signature was created. This matters for long-term validity, especially if a certificate expires later.
eIDAS compliance
Checks whether the signature meets EU eIDAS regulation standards for qualified electronic signatures and seals.
Supported signature profiles
Chaindoc validates all four PAdES baseline profiles defined by ETSI. Each adds a layer of assurance on top of the previous one.
PAdES-BASELINE-B
The basic profile. Meets the minimum requirements for an advanced electronic signature under eIDAS.
PAdES-BASELINE-T
Adds a trusted timestamp, proving the signature existed at a specific point in time. Useful if you need to show that a contract was signed before a deadline.
PAdES-BASELINE-LT
Embeds long-term validation data (certificates and revocation info) so the signature can be verified even if the CA goes offline later.
PAdES-BASELINE-LTA
Adds an archive timestamp for long-term storage. Ensures the signature stays verifiable for years, even as cryptographic algorithms are retired.
Frequently asked questions
How PDF signature verification works and what the results mean.