The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Jul. 21, 2023
Cryptographically authenticated database representing a multiple-key-pair root certificate authority
Isara Corporation, Waterloo, CA;
Atsushi Yamada, Waterloo, CA;
ISARA Corporation, Waterloo, CA;
Abstract
In a general aspect, a cryptography system includes a multiple-key pair root certificate authority. In some aspects, a plurality of distinct cryptographic pairs of public keys and private keys of a root certificate authority are generated. A plurality of distinct self-signed root certificates of the root certificate authority are generated. The plurality of distinct self-signed root certificates are each based on and correspond to a respective one of plurality of distinct cryptographic key pairs. A cryptographically authenticated database is generated that includes the plurality of distinct self-signed root certificates and represents the root certificate authority. The cryptographically authenticated database includes validity information of each of the plurality of self-signed root certificates. The cryptographically authenticated database is distributed to entities in a public key infrastructure. The entities can use the validity information to cryptographically verify the validity or invalidity of each of the plurality of distinct self-signed root certificate.