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CADES

CADES (Computer Aided Design and Evaluation System) was a software engineering repository system produced to support the development of the VME/B Operating System for the ICL New Range - subsequently 2900 - computers.

From its earliest days, VME/B was developed with the aid of CADES, which was built for the purpose using an underlying IDMS database (latterly upgraded to IDMS(X)). CADES was not merely a version control system for code modules: it was intended to manage all aspects of the software lifecycle from requirements capture through to field maintenance.

It was the design of CADES that paved the way for the Alvey Project in IPSE (Integrated Project Support Environments) and Process Control Engines. Because CADES was used for more than 20 years throughout the development of a large software engineering project, the data collected has been used as input to a number of studies of software evolution.

Early history

CADES was conceived in 1970 by David Pearson, Computer Scientist and Brian Warboys when working for ICL's New Range Operating System Technology Centre, OSTECH, in Kidsgrove. Pearson, a theoretical physicist by training, had become a computer simulation specialist and joined ICL in 1968 after working in finite-element modelling and simulation research at Imperial College. Warboys had been chief architect for the ICL System 4 multi-access operating system, Multijob.

CAdES (computing)

CAdES (CMS Advanced Electronic Signatures) is a set of extensions to Cryptographic Message Syntax (CMS) signed data making it suitable for advanced electronic signature.

Description

While CMS is a general framework for digitally signing documents such as email (S/MIME) or PDF, CAdES specifies precise profiles of CMS signed data for use with the European Union Electronic Signatures Directive.

An important property of CAdES is that electronically signed documents can remain valid for long periods, even if the signer or verifying party later attempts to deny the validity of the signature.

The main document describing the format is ETSI TS 101 733 Electronic Signature and Infrastructure (ESI) – CMS Advanced Electronic Signature (CAdES).

The first issue of this TS is V1.2.2 (2000-12), the latest is V2.2.1 (2013-04). At the moment (April 2014th) there are activities on creating new CAdES standard. All documents could be found at . The ETSI TS V.1.7.4 (2008-07) is technically equivalent to RFC 5126.