ADSS Signing Server

Advanced Digital Signature Services

World-class, globally trusted solution for signing & verification

ADSS Signing Server is a comprehensive solution for creating and verifying advanced digital signatures on any type of document, web form or transaction. Business applications can rely on ADSS Signing Server to ensure document and data integrity, user authentication, non-repudiation and long-term provability of information. ADSS Signing Server can be easily integrated with business applications using our high-level ADSS Client SDK or simple web services calls. It complies with the OASIS DSS and DSS-X protocol specifications.

ADSS Signing Server can create and verify all common signature formats, including: PDF, PAdES, CAdES, XAdES, XML DigSig, PKCS#7, CMS, PKCS#1 and S/MIME. Click here for a complete list of ADSS Server supported signature formats.


Easy installation, configuration & management

Being completely GUI based with its own purpose built installer ensures ADSS Signing Server can be set-up and be operational in minutes. Automated tasks such as auto-archiving of transaction logs and real-time alerting ensure minimum operator time is required for maintenance or house-keeping. Comes with detailed management reporting for each service which provides dashboard level information that can easily be drilled into for detailed information.

Meets highest levels of performance, scalability and resilience

These are essential qualities for a centralised e-trust security server. ADSS Server is packed with features capable of ensuring it meets even the highest demands placed upon it by Managed Service Providers servicing multiple customers.

Provides maximum security

ADSS Server has been designed with maximum security in mind – from strong identification and authentication of client applications and operators, service access control and secure detailed logging, through to automated system integrity checking, and dual control features.

We enable our customers to digitally sign & protect documents & transactions, helping them to streamline business processes and provide trusted identity assurance

We enable our customers to digitally sign & protect documents & transactions, helping them to streamline business processes and provide trusted identity assurance


We have arranged self-service live demos for important use cases, give them a try!

  • Remote e-Seals using corporate keys
  • Remote e-Signatures using individual user keys
  • Local e-Signatures using individual user keys


ADSS Signing Server can be used in a wide range of scenarios

Bulk document signing

Automated signing of documents such as e-invoices and e-statements using centrally held organisation or department-level signing keys. The signing keys can be held in a secure HSM or in encrypted software files held securely in the ADSS Server database. The signing action can be invoked through our on-demand API or using our watched folder client application called Auto File Processor.

Zero footprint signing

End-users view and digitally sign documents within a standard browser without pre-installing any signing software. User signing keys can be held locally either on a Secure Signature Creation Device (SSCD) e.g. smartcard or secure USB tokens or in a software file. Windows, Mac OS X and Linux operating systems are supported, as well as a range of Internet browsers.

Virtual smart card

This is server-side signing of documents by individual users with their unique signing keys held on the server. Users are first authenticated using any multi-factor technique by the host business application before signing can take place within the ADSS Signing Server. User signing keys can be held securely inside an HSM or in encrypted form in the database.

LeasePlan chose ADSS Server because it exactly met our business and technical requirements. We found we could easily download ADSS Server and all its integration components from Ascertia’s website and the installation and configuration went very smoothly.

Hugo De herdt
LeasePlan Belgium