US 12,353,558 B2
Information processing system, information processing apparatus, and information processing method
Daiki Sakurada, Kanagawa (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP)
Filed by Daiki Sakurada, Kanagawa (JP)
Filed on Sep. 27, 2022, as Appl. No. 17/953,490.
Claims priority of application No. 2021-199303 (JP), filed on Dec. 8, 2021.
Prior Publication US 2023/0177163 A1, Jun. 8, 2023
Int. Cl. G06F 21/57 (2013.01); H04L 9/32 (2006.01)
CPC G06F 21/575 (2013.01) [H04L 9/3239 (2013.01); G06F 2221/034 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An information processing system, comprising:
a first information processing apparatus; and
a second information processing apparatus,
the first information processing apparatus including first circuitry configured to:
generate signature data for an update file based on a hash value obtained based on the update file; and
provide the update file,
the second information processing apparatus including second circuitry configured to:
obtain the update file and the signature data;
verify the update file with the signature data in updating a start-up file for the second information processing apparatus with the update file;
update the start-up file with the verified update file;
generate, based on the hash value obtained based on the signature data, verification data for verifying the updated start-up file, wherein the hash value is calculated by said first information processing apparatus; and
verify the updated start-up file with the verification data in starting up the second information processing apparatus with the updated start-up file.