Patents by Inventor Joäo Francisco Cordeiro De Oliveira Barros

Joäo Francisco Cordeiro De Oliveira Barros has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Probabilistic key distribution in vehicular networks with infrastructure support
    Patent number: 9692604
    Abstract: Method and system of key distribution by trusted nodes for a vehicular ad hoc network, the nodes of said network having at least one pair of public-private keys and the corresponding certificates, issued by a CA, said method comprising each vehicle node, on entering said network region, requesting a set of keys from an RSU node that is within range and within that region, said RSU node sending said vehicle node a set of private keys, selected from a pool of private keys, and a list with the key identifiers of the private keys shared by said vehicle node and the other vehicle nodes that have most recently contacted said RSU for a predetermined period of time; such that two nodes are able to establish a secure connection without further interaction by deriving a shared secret which is a cryptographic hash function of the keys shared by said two nodes.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: June 27, 2017
    Assignee: Universidade Do Porto
    Inventors: Joäo Francisco Cordeiro De Oliveira Barros, Joäo Paulo Patriarca De Almeida, Mate Boban, Saurabh Shintre
  • Probabilistic key distribution in vehicular networks with infrastructure support
    Patent number: 9276743
    Abstract: Method and system of key distribution by trusted nodes for a vehicular ad hoc network, the nodes of said network having at least one pair of public-private keys and the corresponding certificates, issued by a CA, said method comprising each vehicle node, on entering said network region, requesting a set of keys from an RSU node that is within range and within that region, said RSU node sending said vehicle node a set of private keys, selected from a pool of private keys, and a list with the key identifiers of the private keys shared by said vehicle node and the other vehicle nodes that have most recently contacted said RSU for a predetermined period of time; such that two nodes are able to establish a secure connection without further interaction by deriving a shared secret which is a cryptographic hash function of the keys shared by said two nodes.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 1, 2016
    Assignee: Universidade Do Porto
    Inventors: Joäo Francisco Cordeiro De Oliveira Barros, Joäo Paulo Patriarca De Almeida, Mate Boban, Saurabh Shintre
  • PROBABILISTIC KEY DISTRIBUTION IN VEHICULAR NETWORKS WITH INFRASTRUCTURE SUPPORT
    Publication number: 20150139421
    Abstract: Method and system of key distribution by trusted nodes for a vehicular ad hoc network, the nodes of said network having at least one pair of public-private keys and the corresponding certificates, issued by a CA, said method comprising each vehicle node, on entering said network region, requesting a set of keys from an RSU node that is within range and within that region, said RSU node sending said vehicle node a set of private keys, selected from a pool of private keys, and a list with the key identifiers of the private keys shared by said vehicle node and the other vehicle nodes that have most recently contacted said RSU for a predetermined period of time; such that two nodes are able to establish a secure connection without further interaction by deriving a shared secret which is a cryptographic hash function of the keys shared by said two nodes.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 21, 2015
    Inventors: Joäo Francisco Cordeiro De Oliveira Barros, Joäo Paulo Patriarca De Almeida, Mate Boban, Saurabh Shintre