公开(公告)号：US11316665B2

公开(公告)日：2022-04-26

申请号：US16449288

申请日：2019-06-21

Applicant: Certicom Corp.

Inventor： Daniel Richard L. Brown

IPC: H04L29/06 ,  H04L9/06 ,  G09C5/00 ,  H04L9/30 ,  G06F7/58

Abstract: Methods, systems, and computer programs for generating cryptographic function parameters are described. In some examples, astronomical data from an observed astronomical event is obtained. A pseudorandom generator is seeded based on the astronomical data. After seeding the pseudorandom generator, an output from the pseudorandom generator is obtained. A parameter for a cryptographic function is generated by operation of one or more data processors. The parameter is generated from the output from the pseudorandom generator.

公开(公告)号：US20200028694A1

公开(公告)日：2020-01-23

申请号：US16150930

申请日：2018-10-03

Applicant: Certicom Corp.

Inventor： Gregory Marc ZAVERUCHA ,  David William KRAVITZ ,  Daniel Richard L. BROWN

IPC: H04L9/32

Abstract: Methods, systems, and computer programs for using an implicit certificate are disclosed. In some aspects, a message and an implicit certificate are accessed. The implicit certificate is associated with an entity. A modified message is generated by combining the message with a value based on the implicit certificate. A digital signature can be generated based on the modified message and transmitted to a recipient. In some aspects, a digital signature from an entity and a message to be verified based on the digital signature are accessed. An implicit certificate associated with the entity is accessed. A modified message is generated by combining the message with a value based on the implicit certificate. The message is verified based on the digital signature and the modified message.

公开(公告)号：US20190312913A1

公开(公告)日：2019-10-10

申请号：US16420867

申请日：2019-05-23

Applicant: BlackBerry Limited ,  Certicom Corp.

Inventor： Michael Eoin BUCKLEY ,  Michael Charles HOLLATZ ,  Robert John LAMBERT ,  Nevine Maurice Nassif EBEID

IPC: H04L29/06 ,  H04L29/12 ,  H04L9/30 ,  H04W12/06 ,  H04M3/22 ,  H04W12/04 ,  H04L9/14 ,  H04L9/32 ,  H04L9/08 ,  H04W12/02

Abstract: A method is presented for secure communication, the method including generating a signature using a private key, a nonce, and at least one of an identifier and a key component; and transmitting the signature, the nonce, a security parameter, and the at least one of the identifier and the key component, wherein the security parameter associates a user identity with a public key, the public key being associated with the private key.

公开(公告)号：US20190268763A1

公开(公告)日：2019-08-29

申请号：US16385605

申请日：2019-04-16

Applicant: 2236008 Ontario Inc. ,  Certicom Corp.

Inventor： James Robert Alfred ,  Sergei Sidorov ,  Ming Chee Tsang ,  Scott Lee Linke

IPC: H04W12/04 ,  H04L29/08 ,  H04L29/06 ,  H04L9/08 ,  H04W12/06

Abstract: 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.

公开(公告)号：US10285051B2

公开(公告)日：2019-05-07

申请号：US15270957

申请日：2016-09-20

Applicant: 2236008 Ontario Inc. ,  Certicom Corp.

Inventor： James Robert Alfred ,  Sergei Sidorov ,  Ming Chee Tsang ,  Scott Lee Linke

IPC: H04L9/12 ,  H04W12/06 ,  H04W12/04 ,  H04L29/06 ,  H04L9/08 ,  H04L29/08

Abstract: 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.

公开(公告)号：US10243734B2

公开(公告)日：2019-03-26

申请号：US14575844

申请日：2014-12-18

Applicant: Certicom Corp.

Inventor： Daniel Richard L. Brown ,  Scott Alexander Vanstone

IPC: H04L9/08 ,  G06F7/58 ,  H04L9/30 ,  H04L9/06 ,  G06F7/72

Abstract: An elliptic curve random number generator avoids escrow keys by choosing a point Q on the elliptic curve as verifiably random. An arbitrary string is chosen and a hash of that string computed. The hash is then converted to a field element of the desired field, the field element regarded as the x-coordinate of a point Q on the elliptic curve and the x-coordinate is tested for validity on the desired elliptic curve. If valid, the x-coordinate is decompressed to the point Q, wherein the choice of which is the two points is also derived from the hash value. Intentional use of escrow keys can provide for back up functionality. The relationship between P and Q is used as an escrow key and stored by for a security domain. The administrator logs the output of the generator to reconstruct the random number with the escrow key.

公开(公告)号：US09917693B2

公开(公告)日：2018-03-13

申请号：US14935238

申请日：2015-11-06

Applicant: BlackBerry Limited ,  Certicom Corp.

Inventor： Roger Paul Bowman ,  Catalin Visinescu ,  Ming Chee Tsang ,  Daniel Richard L. Brown ,  Ravi Singh ,  Thomas Stiemerling

IPC: H04L29/06 ,  H04L9/08 ,  H04L9/30 ,  G06F21/33 ,  G06F21/53 ,  G06F21/57 ,  H04L9/32 ,  H04W12/06 ,  H04W12/00

CPC classification number: H04L9/0825 ,  G06F21/33 ,  G06F21/53 ,  G06F21/57 ,  H04L9/30 ,  H04L9/3268 ,  H04L63/0823 ,  H04L63/0876 ,  H04L2209/80 ,  H04W12/00 ,  H04W12/06

Abstract: 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.

公开(公告)号：US09871827B2

公开(公告)日：2018-01-16

申请号：US15225543

申请日：2016-08-01

Applicant: BlackBerry Limited ,  Certicom Corp.

Inventor： Matthew John Campagnan ,  Gregory Marc Zaverucha ,  Michael Eoin Buckley

IPC: H04L9/00 ,  H04L29/06 ,  H04L9/08

CPC classification number: H04L63/306 ,  H04L9/0861 ,  H04L2209/80

Abstract: The present disclosure relates to systems and methods for secure communications. In some aspects, a method of signalling an interception time period is described. At least one keying information used by a KMF to regenerate a key is stored. A start_interception message is signaled from an ADMF to a CSCF. A halt_message is signaled from the ADMF to the CSCF.

公开(公告)号：US09819686B2

公开(公告)日：2017-11-14

申请号：US15215187

申请日：2016-07-20

Applicant: Certicom Corp.

Inventor： Marinus Struik

IPC: H04L29/06 ,  H04L9/08 ,  H04L9/00 ,  H04W12/02

CPC classification number: H04L63/105 ,  H04L9/00 ,  H04L9/088 ,  H04L63/0428 ,  H04L63/08 ,  H04L63/123 ,  H04L63/162 ,  H04L63/164 ,  H04W12/02

Abstract: A method of communicating in a secure communication system, comprises the steps of assembling a message at a sender, then determining a security level, and including an indication of the security level in a header of the message. The message is then sent to a recipient.

公开(公告)号：US09774609B2

公开(公告)日：2017-09-26

申请号：US14991161

申请日：2016-01-08

Applicant: Certicom Corp.

Inventor： Marinus Struik

IPC: H04L29/06

CPC classification number: H04L63/123 ,  H04L63/04 ,  H04L63/0428 ,  H04L63/0876 ,  H04L63/105 ,  H04L63/162

Abstract: A method of communicating in a secure communication system, comprises the steps of assembling as message at a sender, then determining a security level, and including an indication of the security level in a header of the message. The message is then sent to a recipient.