Why Ascertia?

Signature Verification is rapidly becoming an over-used term. Many product and service providers claim to offer verification services to meet business needs. As trust solution experts Ascertia keeps being asked to explain the benefits that ADSS Server brings to an organisation as opposed to using alternatives such as open source toolkits, simple service models or limited function products. The answer is all about functionality, support for standards, security management, flexibility and investment protection. The following requirements are common to all Validation Service Providers:

 

Verification / Validation Requirements ADSS Server Other Products
Can the solution process PDF, XML, S/MIME and other PKCS#7 and CMS signed documents? YES Often limited to one or two formats
Can the solution handle basic signatures, timestamped signatures, long-term signatures, PDF certified signatures? YES Usually a limited ability to cover this
Can the solution handle ETSI XAdES, CAdES and PAdES signed documents with support for multiple extended signature formats? YES Often a limited capability
Does the solution allow the organisation to easily define the trust anchors (Root CAs and Issuer CAs) that are trusted? YES Often limited to Windows trust lists
Can the solution verify multiple signatures in a single call and return information on each of the signers? YES Detailed information is rarely returned
Does the solution support OASIS DSS protocol and DSS-X Verification Reports with the ability to offload application from complex coding? YES  A limited capability at best
Can the solution check both current and historic signatures and after a grace period, using a specified time in the past? YES Historic signatures are rarely handled
Can basic signatures be enhanced to long-term signatures (CAdES and XAdES) as part of the verification process? YES Usually a limited ability to cover this
Can the solution keep old CRLs from each trusted CA so that these can be used to check the signature status in the past? YES Rarely seen
For long-term signatures can the solution automatically use the embedded CRL/OCSP information if valid? YES Often a limited capability
Does the solution have effective role based access security controls and maintain protected event and transaction logs? YES Check carefully this is rarely seen!
Can a high availability load-balancing configuration be immediately deployed? On platforms other than Windows? and supporting a range of HSMs? YES
YES
YES
Most have issues being this flexible!
Can CRLs, OCSP, XKMS or even SCVP services be used to check the signer’s status? Can a sophisticated validation policy be configured to define the order in which these mechanisms are used, and how to locate and communicate with the back-end status providers? YES

CRL is common OCSP is rarer
Support for XKMS and SCVP is very unusual

Can optionally a copy of the original document be kept within the solution’s transaction logs as evidence?

YES

Usually a completely separate action
Can a notary archive action be associated with the verification action such that a long-life archive signature and timestamp are applied within an LTANS compliant archive?  Is a TSA and LTANS service provided as part of same product. YES
Usually a completely separate project or product  Support for LTANS very unusual  
Verification / Validation Requirements YES  Usually a completely separate project or product
Is there a solution option for extracting and sending only the signatures from documents to ensure privacy at the relying customer?  I.e. is a gateway type product provided? YES  Most have issues being this flexible
Is the solution designed to be used by both end-users, business relying parties and managed service providers? YES Often a limited capability
Does the solution provide detailed logging of each transaction, the evidential information & filtering/searching? YES
Often a limited capability
Does the solution provide an in-built capability for service reporting (detail and summary reports)? YES Often a limited capability
Can the calling client applications be authenticated using request signing and/or SSL client certificates? Can these clients be limited to only use specific signature verification profiles? YES Most have issues being this flexible
Can the solution provide a standard based approach to providing quality information on the signature algorithms, key lengths, hash algorithms and certificates associated with the signature and whether these meet the minimum local security policy requirements of the relying party?  E.g. are the PEPPOL specifications supported? YES
Rarely seen
Does the solution provide a Client SDK for Java and .Net environments plus source code samples and example applications to make integration really simple? YES Worth checking
Can the solution be created on Windows, Solaris and Linux platforms with support for 32 and 64 bit processing? YES Worth checking
Are various FIPS 140-2 level 3 or CC EAL4 HSMs supported? YES Worth checking
Is an effective security management environment maintained that protects the authentication mechanisms, the verification policies, the validation policies, the keys, certificates, operator and system event logs and the transactional logs?  Is it compliant with CWA 14167-1 Requirements for Trustworthy Systems? YES Worth checking

 

ADSS Server enables organisations to check transactional validity at the server. Some people advise allowing the end-user to determine if the data is to be trusted, however Ascertia does not recommend this approach – if the data cannot be trusted then why present it to busy managers?

As can be seen ADSS Server has been designed to cope with a changing e-business world in which multiple document formats will be used, with multiple signature formats and other properties. Although requirements may seem clear now there is usually a clear need for investment protection so that changing business requirements do not lead to a project being scrapped and restarted because of a lack of flexibility.

ADSS Server was selected as the core technology of the DNV Validation Authority Service (http:/www.dnv.com) after an open global tender – our approach and product functionality and flexibility was our key to success. BBS (http://www.bbs.no) now runs this service and has renamed it as the Global Verification Service.

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Ascertia is a global provider of Digital Signature products and solutions that enable trust within electronic workflows. Organisations can now safely cross the final hurdle in migrating old paper-intensive approval processes to the new secure digital world. Ascertia’s Digital Signing products are designed to be easy to integrate and use in a range of business scenarios.