The stack comprises Trusted Logic's "Security Module" running on a virtual processor under Trango's Hypervisor.
Trusted Logic is notable for having helped ARM develop
TrustZone, the pre-boot security hardware available to ARM core licensees as an add-on. Trusted Logic's own
TL Security Module works with any ARM core, it claims, including those with our without TrustZone hardware. The Module includes a small, highly secure OS intended to host security-criticial applications, along with a secure IPC (inter-process communications) channel to rich OSes such as Windows CE and Linux.
Trusted Logic TL Security Module architectureTrango's Hypervisor, meanwhile, comprises a 20KB microkernel capable of hosting two or more guest OSes on a single processor core. Guest OSes run in CPU user mode, rather than protected mode, for added security compared to solutions from other virtualization vendors, the company claims.
Windows CE 5.0 support made its debut for the product in 2006, at which time it supported ARMv5, MIPS32, and MIPS64 processors;
ARM6 support was added earlier this year.
Combined Trango/Trusted Logic stack architectureThe companies claim that when used together, their products offer total security, a small footprint, and reduced costs -- characteristics they hope will encourage the combined stack's use in low-cost consumer devices such as mobile phones.
According to Trango, virtualization reduces the cost of PEDs without compromising the demanding certification requirements of security standards such as the Payment Card Industry PIN Entry Device (PCI-PED) specification and
EMV specifications. PIN entry processes are said to run in their own execution environment, fully partitioned from Windows CE or Linux, which can simultaneously display consumer messaging, news, weather, or advertising.
Trusted Logic claims to have invented the security module concept, introducing the first such product in 2004. CEO Dominique Bolignano stated, "Trango Hypervisor enhances the TL Security Module by enabling a number of isolated execution environments, thus offering the combined benefits of security and multi-core chips on a lower cost, single core chip."
AvailabilityNo information was provided on the pricing or availability of the combined Trango/Trusted Logic stack. Trango's Hypervisor is available now on ARM9, and expected to
ship early next year on ARM11.
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