A qualified electronic seal is the organizational equivalent of an electronic signature. It confirms the origin and integrity of a document issued by a legal entity.
What is an electronic seal?
Under eIDAS Regulation 910/2014 (Article 38), a qualified electronic seal guarantees that the document was issued by the identified organization and has not been altered since sealing. It represents the organization, not an individual.
Qualified seal certificate
- Issued to legal entities only
- Contains company name, registration number, and country
- Private key stored in HSM — never leaves the secure environment
- Listed on the EU Trust List as a qualified service
Remote seal via CSC API
Electronic seals can be applied remotely and at scale using the CSC API. This enables server-side, automated sealing of high document volumes without manual intervention.
- Batch sealing — thousands of documents per hour
- No OTP required for automated server-to-server flows (pre-authorized credentials)
- Supports PAdES, CAdES, XAdES output formats
Typical use cases
- Automated invoice sealing (e-invoicing, B2B, cross-border EU)
- Official document issuance — certificates, statements, reports
- ERP and document management system integration
- Government and public sector document workflows