What is electronic sealing?
Electronic sealing uses your company's digital credentials to apply an official seal to documents in your organisation's name.
Each seal complies with the PAdES-BASELINE-LT format, which includes a qualified timestamp from a trusted time server (Qualified TSA), proving when the document was sealed. This creates a verifiable record that the document came from your company and hasn't been altered since sealing.
What is long term archival support
When a sealed document includes long term archival support, it means that it complies with the PAdES-BASELINE-LTA format that ensures your electronically sealed documents remain valid and verifiable for decades, even as cryptographic standards evolve. It does this by supporting regularly refreshing timestamps and validation data before they expire.
You'd want this option if:
- You need to preserve documents for long-term legal or regulatory purposes (10+ years)
- You're required to prove document authenticity far into the future
- Your industry has strict archival compliance requirements
Without LTA, sealed documents may become unverifiable after several years as certificates and timestamps expire. With LTA, the user must re-seal the document before the certificate expires each time.