Patent · US Active

Method and system for establishing cryptographic communications between a remote device and a medical device

US8892886B2 · kind B2 · utility

13Cited by

2References

20Claims

0Family size

Assignee

Roche Diagnostics International AG · CH

Inventors

Guido Konrad · Bern, CH
Martin Troesch · Langenthal, CH
Felix Lindner · Berlin, DE
Gregor Kopf · Berlin, DE

Key dates

Filing date	Mar 14, 2013
Grant date	Nov 18, 2014
Priority date	—
Expiry date	May 24, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/88
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and system establishing cryptographic communications between a remote device and a medical device, with the medical device having less processing power than the remote device are disclosed. The method may comprise establishing unencrypted communication between the remote device and the medical device, generating an asymmetric key pair by the remote device comprising a public key and a private key, generating a key request message and sending of the key request message together with the public key to the medical device, generating a pre-master key and encryption of the pre-master key with the received public key by the medical device, generating a key response message and sending of the key response message together with the encrypted pre-master key from the medical device to the remote device, decrypting the encrypted pre-master key with the private key by the remote device, and deriving a master key as a symmetric key from the pre-master key.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.