An anonymous reader writes "A number of IBM's computers have been available with an "embedded security subsystem (ESS)" for some time now. This site lists three research papers regarding the new TCPA (Trusted Computing Platform Initiative) security chip developed by IBM, including the full GPL-ed source code to a Linux driver for this chip. In particular, the 'Why TCPA?' paper claims that IBM's TCPA chip is in fact of extremely limited use for DRM, as it contains no tamper resistance; the chip is designed to fend off software attacks, not physical attacks. An interesting take from a company with very solid products."
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