Downloadable Software

Downloadable Conditional Access System or DCAS is a proposal advanced by CableLabs for secure software download of a specific Conditional Access client (computer program) which controls Digital Rights Management (DRM) into a OCAP-compliant host consumer media device. more...

Home
*Video Games
*Video Games Accessories
Apple iPod, MP3 Players
Apple, Macintosh Computers
DVD & Home Theater
Desktop & Laptop Accessories
Desktop & Laptop Components
Desktop PCs
Internet Games
MP3 Accessories
Software
Antivirus, Security,...
Apple, Macintosh Software
Business & Productivity
Database & Development Tools
Digital Music & Video...
Downloadable Software
Education & Reference
Games & Entertainment
Graphics, Photo & Publishing
Handheld Software
Internet Related Utilities
Kids' Software
Networking
Operating Systems
Other Software
Wholesale Lots

The National Cable & Telecommunications Association (NCTA) proposes that DCAS be used as a substitute for physical CableCARDs, a standard also created by CableLabs for which products began appearing in August, 2004 as part of industry compliance to the #FCC Mandate, which in turn is pursuant to the Telecommunications Act of 1996. DCAS is a controversial proposal for a variety of reasons: it currently does not exist, has no set deadlines for support on all Cable systems, the specification even in draft form is not currently public, may not satisfy FCC requirements that security modules be separable, and requires an operating system (OCAP) that a majority of consumer electronics (CE) manufacturers do not wish to implement.

DCAS as currently envisioned, removes the need for physical set-top boxes or CableCARDs currently required to protect encrypted digital content. It is proposed that instead of a card with removable circuitry, that a custom ASIC chip be soldered onto the circuitboard of any digital cable ready device. DCAS software would run on this custom chip. Additional circuitry needed to run the OCAP operating system would be required. OCAP programs then would be used as the sole method of interacting with DCAS since it will enable cable companies to force the download of new security software.

The basic purpose of DCAS is to implement DRM protection in software, supported by future OCAP-compliant consumer devices such as digital televisions, DVRs, and set-top boxes (still required to support legacy non-OCAP-compliant devices). This secures the information transmitted in the link between the cable company and the consumer device. Besides decryption, the DCAS software controls how the content is used- whether it must be deleted immediately after viewing, after a set period of time, which devices it may be transferred to and if transfer or recording is permitted. The scheme may be used more broadly and is being advanced by Rupert Murdoch's company NDS as a DRM method useful also for portable media players and other devices not attached to cable networks. A working DCAS prototype was created by Samsung and NDS for the cable industry and was demonstrated to the FCC in November 2005.

According to Brian Dietz of the National Cable & Telecommunications Association (NCTA):

...we expect downloadable security to be supported nationwide by MSOs by July 2008.

It is asserted by proponents that DCAS provides greater security for the cable industry because it allows them to change their entire security structure by downloading new software into host devices. If a particular encryption algorithm is cracked, it can be replaced by another one. Detractors note that if the physical circuitry is compromised, that it may not be replaced as is the case with CableCARDs. Some DCAS scenarios do use removable cards: OCAP-based devices may incorporate internal support for a kind of "smart card" (similar to the current SIM chip in a GSM cell-phone) to identify the subscriber and provide further protection. Proponents assert that DCAS is more supportable since DCAS devices would not require a qualified technician to install the card. Detractors assert that the final version of DCAS may require a physical card insertion, and that technicians are not required to insert CableCARDs anyway, since they are merely the same kind of cards that consumers routinely insert in their laptops. It is asserted that if Cable companies are finally forced to agree on a standard for two way communication that Cablecards will be able to be remotely configured as would be the case with DCAS devices.

Read more at Wikipedia.org