Patent ID: 8510570
Filing Date: 2013-08-13
Classification: G06F,G07F,H04L

Abstract:
1. A method for securing content to be used by a device comprising: preparing an encrypted image by encrypting at least a portion of said content such that said portion can be recovered by decrypting said encrypted image using a key; storing said encrypted image on said device; obtaining information unique to said device, said information unique to said device being readable from the device by a boot program operating on said device; generating a signature using said information unique to said device to bind said encrypted image to said device, said signature encrypting said key such that said key is recoverable from said signature using said information unique to said device; and storing said signature on said device to enable said boot program on said device to recover said key from said signature by determining said information unique to said device and providing said information unique to said device as an input to a signature verification function, an output of said signature verification function corresponding to said key to enable said device to decrypt said encrypted image to obtain said portion.