Socionext Assigned PatentSecure boot method, semiconductor device and recording medium
By Francis Pelletier on 2017.02.15
Socionext, Inc., Yokohama, Japan, has been assigned a patent (9,530,004) developed by Yajima, Jun, Kawasaki, Japan, and Saito, Kenji, Hachiouji, Japan, for a "secure boot method, semiconductor device and recording medium."
The abstract of the patent published by the U.S. Patent and Trademark Office states: "A secure boot method for a system, the system including a processor and a storage medium configured to store a program, a plurality of first partial hash values calculated based on a plurality of first partial programs into which the program is divided, and a first legitimate hash value which is a hash value calculated based on a plurality of first legitimate partial hash values, the plurality of first legitimate partial hash values being calculated based on a plurality of legitimate partial programs. The secure boot method includes calculating, a second calculated hash value based on the plurality of first partial hash values, and determining, whether or not the second calculated hash value matches the first legitimate hash value to continue the start-up processing of the system when the determination indicates match, and suspend the start-up processing of the system when the determination does not indicate match."
The patent application was filed on August 28, 2014 (14/471,280).