US Patent Issued to Cryptography Research on July 14 for "Encrypted physically unclonable function circuit helper data" (California Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,683,811, issued on July 14, was assigned to Cryptography Research Inc. (San Jose, Calif.).

"Encrypted physically unclonable function circuit helper data" was invented by Scott C. Best (Palo Alto, Calif.) and Joel Wittenauer (Pleasanton, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Multiple helper data solutions (a.k.a., helper data blocks), and therefore multiple possible PUF output values, are generated for a given integrated circuit die. These helper data blocks are encrypted and stored in a nonvolatile memory on the integrated circuit die. Each helper data block is encrypted such that each helper data block can only be decrypted by a decrypt...