ADSS Signing Server

Advanced Digital Signature Services

One solution for all your signing & verification needs!

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 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 (Java and .NET) or simple web services calls. ADSS Signing Server 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.


Ensures easy installation, configuration and management

Completely GUI based, with its own purpose built installer ensures ADSS 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 for extra 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 by Managed Service Providers servicing multiple customer organisations.

Provides maximum security

ADSS Server has been designed with maximum security in mind, from strong identification and authentication of client applications and operators, to fine grain access control to services, to secure detailed logging, to automated system integrity checking, to dual control features, ADSS Server has it all! Security for your centralised signing and verification operations is a must, with ADSS Server you do not have to make any compromises.


Server-side signing using corporate signing key

These demos show the signing of documents using keys held on the server, either within an HSM or encrypted database. The signing keys may belong to an individual, department or organisation.

PDF signatures

This demo shows the creation of PDF digital signatures. This includes visible, invisible, certified and long-term PAdES Part 2 signatures (note PAdES Part 4 signatures are also supported by ADSS Server).

Launch Demo

XAdES signatures

This demo shows the creation of XAdES digital signatures. This includes XAdES-BES and XAdES-T signatures (note XAdES-X-L and XAdES-A are also supported by ADSS Server).

Launch Demo

CAdES signatures

This demo shows the creation of CAdES digital signatures. This includes CAdES-BES and CAdES-T signatures (note CAdES-X-L and CAdES-A are also supported by ADSS Server).

Launch Demo


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

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.

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. Email integration is also available.

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

Ascertia is a global leader in delivering functionally rich, easy to deploy e-security solutions. We pride ourselves in being easy and efficient to deal with.

Ascertia is a global leader in delivering functionally rich, easy to deploy e-security solutions. We pride ourselves in being easy and efficient to deal with.