Patent ID: 8433924
Filing Date: 2013-04-30
Classification: G06F

Abstract:
1. An apparatus comprising: a retrieval module configured to retrieve a measurement value from a predetermined location on a device selected for authentication for unlocking a decryption key, a correct measurement value enabling unlocking of the decryption key; a decryption module in communication with the retrieval module, the decryption module configured to decrypt an external authentication signal using the unlocked decryption key prior to executing a local boot block of the device, the authentication signal stored external to the device, the authentication signal comprising a message that once decrypted and presented to a user is recognizable by the user; and a communication module in communication with the decryption module, the communication module configured to communicate the decrypted authentication signal to a user as one or more of a visual and audible signal discernible by the user to determine that the authentication signal was correctly decrypted.