Patent ID: 11968316
Assignee: CABLE TELEVISION LABORATORIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A computing device for an enhanced public key infrastructure (PKI), comprising:
a processor; and
a memory device in operable communication with the processor, and configured to store a plurality of computer-executable instructions therein, which, when executed by the processor, cause the processor to:
generate a first signature using a first key and a first cryptographic algorithm;
generate a second signature using a second key and a second cryptographic algorithm;
combine the first signature and the second signature into a composite signature;
generate, with a quantum resistant algorithm, a digital certificate including the composite signature in a single field; and
generate a third signature using a third key and a third cryptographic algorithm,
wherein the first signature and the second signature are associated with a same first certificate authority (CA).