In one embodiment, a platform comprises a processor, an input/output control hub (ICH), and a trusted platform module (TPM). Coupled to the ICH, the TPM comprises an internal memory, and an asymmetric key generation unit. The symmetric key generation unit produces an ephemeral asymmetric key pair including...http://www.google.co.uk/patents/US6948065?utm_source=gb-gplus-sharePatent US6948065 - Platform and method for securely transmitting an authorization secret
