Patent ID: 11863539
Assignee: ZOOM VIDEO COMMUNICATIONS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A non-transitory computer-readable medium comprising processor-executable instructions configured to cause a processor to:
receive an enrollment request and a corresponding cryptographic signature from an unenrolled device, wherein the cryptographic signature of the enrollment request is generated by using a private cryptographic key of the unenrolled device, wherein the enrollment request includes a set of long-term cryptographic keys of the unenrolled device to be added into a new sequential record into a signature chain;
cryptographically validate the enrollment request at least by decrypting the cryptographic signature of the enrollment request using a public cryptographic key of the unenrolled device;
cause a passcode to de displayed;
generate an encrypted attestation message indicating that the unenrolled device has been authenticated, wherein the encrypted attestation message is encrypted using a symmetric cryptographic key derived from the passcode, and wherein the encrypted attestation message includes the set of long-term cryptographic keys; and
transmit the encrypted attestation message to the unenrolled device, wherein the new sequential record is added into the signature chain and includes an output generated by decrypting the encrypted attestation message.