Electronic signature directly in your application
Connect signing, timestamps, certificate issuance, or long-term archiving to your software via a unified REST API — without local installation and in full compliance with eIDAS.
Signature infrastructure
as a service
You don’t need to build your own PKI or operate an HSM. Choose only the services you need and leave the rest to us — as a qualified trust service provider.
No local installation
Call signing, certificates, or archive via API directly from your application — no local client on users’ devices.
REST API & documentation
A unified interface with clear documentation. Your team can handle integration in days, not months.
Use your own packages
Draw via API from purchased packages of signatures and timestamps — transparently and with no hidden fees.
Full eIDAS compliance
We are a qualified provider listed on the European Trusted List. Everything signed via API is legally recognized across the EU.
Solutions API
QTS
TIME STAMPS
Qualified electronic timestamps added to the signing operation via Enterprise WebSigner.
- Qualified electronic time stamps
- Basic Auth authorization
- Integration with NFQES Enterprise WebSigner
- The customer decides whether to use a timestamp during signing
FileGatewayServices
ENTERPRISE SIGNATURE
Solution for enterprise electronic signatures deployed directly in the customer’s infrastructure.
- Automated signing of electronic documents
- Integration via REST/SOAP API
- Support for CAdES, XAdES, PAdES, JAdES
- Compatibility with QSCD devices and certified HSMs
- Bulk distribution of documents for signature
DigitalSignature
SIGNING
Simple interface for digital signature implementation — a modern replacement for paper signatures.
- Simple implementation
- Suitable where advanced signature levels are not required
CertificateProvider
CERTIFICATES
Issuance of certificates from CSR requests for SaaS 4SIGNER solutions — for companies moving towards their own registration authority.
- Automated certificate issuance from CSR requests
- Support for electronic, advanced, and qualified signatures
- Secured REST API with client certificate
- Option to become a registration authority (RA)
HashArchive
ARCHIVE
Long-term retention of electronically signed documents via REST API interface.
- Hash archiving along with document
- Validation of archived document validity
- Authentication via certificate or basic auth
- 5 calls (methods) available
VirtualHSM
INFRASTRUCTURE
HSM as a service for remote certificate storage, used in remote signing without QSCD devices.
- Remote storage of certificates in HSM
- Remote signing without a physical smart card
- Authentication via client certificates
- Does not require a QSCD device
TRUSTED BY INDUSTRY LEADERS
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Start integrating.
Connect electronic signatures to your system via REST API. Connection usually takes days, not months.