Patent ID: 7535249

Claim:
A system for authentication, comprising: a programmable logic device; a memory externally coupled to the programmable logic device, the memory including an array of memory cells and storage devices, the storage devices providing a first storage space and a second storage space; the first storage space for storing a first identifier; the first storage space being provided by protection storage; the second storage space for storing a second identifier, the second identifier being a transformation of the first identifier; the array of memory cells for storing configuration information to configure programmable logic of the programmable logic device; the configuration information including authentication logic information; wherein the transformation of the first identifier includes an encrypting of the first identifier, an encoding of the first identifier, a digital signing of the first identifier, a hashing of the first identifier, a combining of the first identifier with a first identification of the programmable logic device, or a combining of the first identifier with a portion of the configuration information; and wherein the first identifier is a second identification written to the protection storage by the manufacturer of the memory.