"...He said the 1176JZ-S and 1176JZF-S cores, which both incorporate TrustZone, are becoming the processor of choice for next-generation mobile devices. Most major mobile chipmakers, including Intel, Motorola and TI, license ARM cores as an alternative to carrying out their own costly research and development work. Newer Palm and Pocket PC handhelds both rely on ARM-based chips. The first TrustZone-enabled OMAP chips are expected to appear in another 18 to 24 months, TI said.
Intel began pushing its own hardware security system with the introduction of its latest XScale family, the PXA27x, in April. The first chip, the PXA270, formerly code-named "Bulverde", introduced a security subsystem called the Wireless Trusted Platform, to be included in all PXA27x processors. The system consists of a programmable random number generator, secure memory for storing passwords and cryptographic keys and 32KB of trusted ROM that checks for unauthorised code in the system software. The new chip allows VPN functions to be carried out in the protected portion of the chip.
Intel's Wireless Trusted Platform is designed to be compatible with the Open Mobile Alliance's Digital Rights Management (OMA-DRM), an anti-piracy specification introduced in February and backed by players such as mm02, Nokia, Panasonic, RealNetworks, Samsung and Warner Bros. Nokia, Motorola, Sony Ericsson and Siemens already make several dozen handsets that use an early version of OMA-DRM. Microsoft, for its part, is sticking with its Windows Media DRM.
ARM said TrustZone is not necessarily incompatible with these security systems, and could be used with features such as VPN and digital rights management. "It is a very general technology with broad applicability. It brings the benefits of standardisation," said ARM's Cornish. "Everybody is working to address the same set of problems. From the end user perspective, the important thing is that they are addressed effectively."...
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