×

Evolved circuits for bitstream protection

  • US 8,355,502 B1
  • Filed: 04/05/2005
  • Issued: 01/15/2013
  • Est. Priority Date: 05/12/2003
  • Status: Active Grant
First Claim
Patent Images

1. A configuration bitstream for a particular reprogrammable integrated circuit (IC), the configuration bitstream comprising:

  • an evolved circuit bitstream for configuring an evolved circuit in the reprogrammable IC, the evolved circuit bitstream being defined by an iterative configuration process based on a predetermined security-based evaluation function, the evolved circuit generating a constant output for a given input each time the evolved circuit is implemented in the particular reprogrammable IC based upon at least one physical property associated with a process variation of the particular reprogrammable IC, wherein the iterative configuration process results in a design for the evolved circuit based upon the at least one physical property associated with the process variation of the particular reprogrammable IC and the evolved circuit enables decrypting an encrypted bitstream for the particular reprogrammable IC.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×