Patent · US Active

Secure external key storage for programmable ICS

US10044514B1 · kind B1 · utility

11Cited by

3References

15Claims

0Family size

Assignee

XILINX, INC. · US

Inventors

Edward S. Peterson · Rio Rancho, US
James D. Wesselkamper · Albuquerque, US

Key dates

Filing date	Sep 25, 2015
Grant date	Aug 7, 2018
Priority date	—
Expiry date	Mar 18, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/24
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The disclosure describes approaches for protecting a circuit design for a programmable integrated circuit (IC). A black key is generated from an input red key by a registration circuit implemented on the programmable IC, and the black key is stored in a memory circuit external to the programmable IC. The programmable IC is configured to implement a pre-configuration circuit, which inputs the black key from the memory circuit and generates the red key from the black key. A ciphertext circuit design is decrypted into a plaintext circuit design by the programmable IC using the red key, and the red key is erased from the programmable IC. The programmable IC is reconfigured with the plaintext circuit design.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.