Blackberry Corporation

Certicom Corporation

2236008 Ontario Limited

Ming Chee Tsang

James Robert Alfred

Scott Lee Linke

Sergei Sidorov

Neil Patrick Adams

Michael Peter Montemurro

Stephen John Barrett

Ravi Singh

Daniel Richard L Brown

Robert Joseph Lombardi

Roger Paul Bowman

Adam Richard Schieman

Thomas Rudolf Stiemerling

Catalin Visinescu

A computer-implemented method comprises sending, to a first device, a request for a signed certificate, the request for the signed certificate comprising a signed hash of data associated with a user, a corresponding public key of the user, and the data associated with the user; sending, to a second device different from the first device, a request for the signed certificate, the request comprising information to retrieve the signed certificate; and obtaining, from the second device, a signed certificate, the signed certificate comprising the public key of the user, the hash of the data associated with the user, and information indicating a health status of the user, the data associated with the user being absent from the signed certificate.

System and method for obtaining a signed certificate

A system and method for securing communication across an in-vehicle bus, includes establishing a connection between a gateway in a vehicle and the in-vehicle bus; generating a session key at the gateway within the vehicle; transmitting a public key certificate and ephemeral key to the gateway and an electronic control unit of the vehicle; generating a shared secret at the gateway and the electronic control unit, respectively; encrypting the session key with the shared secret at the gateway; receiving the encrypted session key through the in-vehicle bus at the electronic control unit; and decrypting the encrypted session key based on the shared secret generated at the electronic control unit.

In-vehicle networking

Systems, methods, and software can be used to provide security assurance information. In some aspects, a certificate request for a client process on a mobile device is received. A security assurance character for the client process is determined. Whether to grant the certificate request is determined based on the determined security assurance character. In response to determining to grant the certificate request, a certificate is generated.

Providing security assurance information

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Mississauga, Canada

Ming Chee Tsang