Chelsfield Consultants SOFTWARE








HOME SERVICES TELECOMMUNICATIONS SOFTWARE HARDWARE FAQ CONTACT	SITE MAP

Visit the website of any security company and you might be forgiven for thinking that security is mostly about having the best CCTV, Clever Access Devices, Alarm Systems or other types of hardware. Well security isn't primarily about any of these things, rather it’s mostly about the understanding of undesirable human behaviour, and if this can't be changed, then putting effective systems in place to at least control it.

Of course in many cases applying technology is essential, generally though, it’s only one part (and sometimes just a small part) of an effective solution. As truly independent consultants, we will take the time to understand what your

concerns are, to highlight areas that need attention, and then to work with you to develop overall strategies that fulfill expectations.

Whilst we certainly don’t rest on the technology we will, where required, devise and recommend systems that would effectively serve to increase the protection of your staff, your property and of your data and networks. Using tried and tested methodology we'll system-engineer your solution, and if, for any reason, any part of it can't be found off the shelf, then we'll design it for you and, in that event, advise you how to maintain it.


*PLUGGING GAPS:* If you have a security issue in your organisation it's likely to be a newly discovered "hole" or breach of some kind. Whether the suspected deficiency is physical or non-physical - affecting your data on the network for example, we can assist you to identify the source, and then help you to fix it if required. We can advise you on devising strategies to exercise your current system to identify weaknesses and so reduce the potential for future breaches.

*EXTENDING YOUR SYSTEMS:* Increasing the reach of your surveillance can also mean adding new technologies to existing installations. If this is the case, then it is crucial that integration is very carefully considered prior to any expansion. Just because two systems use the same communications protocol, for example, is certainly no guarantee that they can talk together. Even if messages can be successfully passed between operational units, the underlying assumptions of what such messages actually mean to each component often needs rationalisation. We can help by writing any necessary software to do this and we can advise you on potential difficulties that may arise - at the planning stage.

EQUIPMENT SUPPLY: We primarily act as systems designers or consultants for a fee. Although some solutions can be met by using standard commercial components or sub-systems, invariably these need to be worked on in some way, or at least bench tested, prior to installation. It usually makes sense therefore to procure part, if not all, of these items for you, although we do not guarantee that we'll be able to purchase at a lower price than you can.

Being independent means we're not tied to any particular manufacturer. We can advise you on the purchase of equipment and systems, including serviceability and maintenance. In cases where a substantial part of the equipment is designed (or in the case of software written) by us, the equipment cost will usually be part of the contract price we have agreed with you before the start of the contract.

NEW INSTALLATIONS: A "turn-key system" from a corporate organisation is one possible answer to finding an integrated solution. However it's expensive, will lock you into the lead supplier and the reality is that such systems don't often provide the exact functionality required. Chelsfield can help you with the entire process of finding an overall solution to new installations - no matter what your industry. We are able to integrate physical security requirements with your data and communications infrastructures creating a seamless schema.


The picture shows an example of a head-end security control desk designed from scratch by Chelsfield Consultants to meet a specific need. The unit features an integrated solution to perimeter defense, access control and communications. All surface controls of the unit are operated by touch sensors providing the user with a single touch command hierarchical menu structure.



All touch pads and system enunciators are completely sealed against spillages or the ingress of contaminants. Based on modular 19" rack mount units the system has built-in redundancy and is easily able to accommodate updates in video processing or other technologies.

Sometimes there is a need to deploy a security system rapidly, as in the case of setting up a first aid camp for example. Often the circumstances which requires aid to be given arises due to political or economic instability.

This case contains a fully automated perimeter protection system, providing both communications and alarm warning integration. The case is both very robust and light weight and may be run from batteries or a variety of unregulated power sources. The unit electronics can accept additional inputs from intelligent video motion detection, wire loops, magnetic switches and a variety of other sensor inputs.

Chelsfield Consultants have been designing security systems for many years. We understand the need for unambiguous and simple system enunciation. This is essential in life-critical or in other threatening situations. We provide integration software that's easy to understand, but without diluting the underlying functional sophistication

Data security is nowadays one of the key issues facing network managers. We responded to this by developing a new polymorphic stream cipher (PMSC) system.

Typical Chelsfield Encryption Application

The illustration above shows a typical application written by us to protect sensitive data. Although this package uses the PMSC it could just have easily used AES, Blowfish, RC4, Skipjack or any other strong cipher. To support the core functionality we have also written a number of other modules that IT security staff may find useful. We can package this code to your requirements:

	Encryption Library Component (mcspmrbc.dll)
	CS Encryption filter and validation tool
	File wiper (Exceeds requirements of US Defense Std. 5220,22-M)
	Password generator -(many user selectable options)
	Encryption scheduler and backup tool
	Verbose messages - (class wrapper for library files)

Whilst there are a number of well known cipher algorithms that could have been used, these were subject to US export restrictions at the time and so we developed our own. (US restrictions have now largely been relaxed for most countries). The Chelsfield cipher offers strong encryption, is fast and is easy to deploy. The code was originally written to provide high level security for one of Chelsfield's clients but now we have produced a generic version available to all clients.

The technique is platform independent and has the advantage of virtual-key transparent operation where required. However this will necessitate the addition of routines within the library - depending on the application. The code may be used to encrypt any binary data stream and it’s so fast it may be used "on-the-fly" in many applications. For Microsoft operating systems, the software can be packaged as an in-process server. One advantage is that additional custom routines can be written which can be deployed inside a Dynamic Link Library (.DLL ) file, or run as a background NT service on Win NT/2000/XP/Vista platforms.

The diagram represents the main sub-components in the encryption library core. The polymorphic function is achieved by a proprietary rotating barrel. This device ensures that there are negligible collisions within the key HASH and it also provides a unique initialisation vector for each pass of the PRNG.

The Chelsfield encryption library has a proven record. It is currently being used by numerous corporate organisations as it is supplied as a licensed third party component within their own applications. If you are interested in how Chelsfield Consultants can assist you to secure your data flow - either at the physical or application level, please give us a call. We'd be happy to discuss whatever interest or concerns you may have in complete confidence.