US 12,137,174 B2
Computer-readable recording medium storing information processing program, information processing apparatus, and system
Toshihiro Shimizu, Sagamihara (JP); and Dai Suzuki, Kawasaki (JP)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on May 5, 2022, as Appl. No. 17/737,060.
Claims priority of application No. 2021-122563 (JP), filed on Jul. 27, 2021.
Prior Publication US 2023/0031804 A1, Feb. 2, 2023
Int. Cl. H04L 9/32 (2006.01); H04L 9/08 (2006.01)
CPC H04L 9/3263 (2013.01) [H04L 9/0825 (2013.01); H04L 9/3247 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable recording medium storing an information processing program to be executed by a first information processing apparatus in a system capable of issuing credential of each user, the program including instructions for causing a processor of the first information processing apparatus to execute processing comprising:
obtaining, from a second information processing apparatus in the system, a value unique to an identifier that uniquely identifies a user, the second information processing apparatus being a device capable of verifying authenticity of an electronic document to be signed;
creating proof that includes attribute information identified from the credential, certification information that certifies the attribute information, and the obtained value;
generating an electronic signature for the electronic document and the proof using a private key that corresponds to the identifier; and
outputting the electronic document and the proof to which the generated electronic signature is attached in association with the identifier,
the obtained value is associated with an upper limit indicating two or more corresponding to a number of times that the proof including the obtained value is allowed to be used.