Patent ID: 11930123
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. In an environment where a device, which is one of a plurality of entities, can communicate with one or more other entities through the exchange of messages, each message verifiable with a respective certificate, a method comprising:
sending, by the device, a certificate request, the certificate request including a caterpillar key, wherein the caterpillar key can be expanded to generate a plurality of cocoon keys, wherein each cocoon key can be used to generate both a respective signature key and a respective encryption key according to the same expansion function, wherein each encryption key for encrypting a respective certificate;
in response to the certificate request, receiving by the device one or more encrypted certificate responses, wherein each encrypted certificate response comprises a respective certificate and is encrypted using a respective encryption key;
for each encrypted certificate response:
generating, by the device, an associated decryption key as a function of a private key for the device; and
decrypting, by the device using the associated decryption key, the encrypted certificate response to recover the respective certificate.