US Patent Issued to STMICROELECTRONICS (ROUSSET) on July 29 for "Protection of a cipher algorithm" (French Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,375,263, issued on July 29, was assigned to STMICROELECTRONICS (ROUSSET) SAS (Rousset, France).

"Protection of a cipher algorithm" was invented by Guillaume Reymond (Luynes, France) and Thomas Sarno (Fuveau, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cryptographic device includes hardware data processing circuitry and software data processing circuitry coupled to the hardware data processing circuitry. The device, in operation, executes a plurality of rounds of a symmetrical data cipher algorithm and protects the execution of the plurality of rounds of the symmetrical data cipher algorithm. The protecting includes executing data masking and...