US Patent Issued to RENESAS ELECTRONICS on Aug. 12 for "Cryptosystem and cryptographic service methods" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,388,804, issued on Aug. 12, was assigned to RENESAS ELECTRONICS Corp. (Tokyo).

"Cryptosystem and cryptographic service methods" was invented by Takashi Kitagawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor manufacturer generates a manufacturer encryption key and a manufacturer decryption key corresponding to the manufacturer decryption key, installs the manufacturer decryption key in a semiconductor device, and provides a customer with the manufacturer decryption key, the customer generates a customer encryption key and a customer decryption key corresponding to the customer decryption key, decrypts, by the customer decryption k...