Patents by Inventor Elisabetta Carrara

Elisabetta Carrara 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).

  • Key management for network elements
    Patent number: 7987366
    Abstract: The invention provides an establishment of a secret session key shared Between two network elements (NEa, NEb) belonging to different network domains (NDa, NDb). A first network element (NEa) of a first network domain (NDa) requests security parameters from an associated key management center (KMC) (AAAa). Upon reception of the request, the KMC (AAAa) generates a freshness token (FRESH) and calculates the session key (K) based on this token (FRESH) and a master key (KAB) shared with a second network domain (NDb). The security parameters are (securely) provided to the network element (NEa), which extracts the session key (K) and forwards the freshness token (FRESH) to the KMC (AAAb) of the second domain (NDb) through a second network element (NEb). Based on the token (FRESH) and the shared master key (KAB), the KMC (AAAb) generates a copy of the session key (K), which is (securely) provided to the second network element (NEb).
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: July 26, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Rolf Blom, Mats Naslund, Elisabetta Carrara, Fredrik Lindholm, Karl Norrman
  • Key management for network elements
    Publication number: 20070160201
    Abstract: The invention provides an establishment of a secret session key shared Between two network elements (NEa, NEb) belonging to different network domains (NDa, NDb). A first network element (NEa) of a first network domain (NDa) requests security parameters from an associated key management center (KMC) (AAAa). Upon reception of the request, the KMC (AAAa) generates a freshness token (FRESH) and calculates the session key (K) based on this token (FRESH) and a master key (KAB) shared with a second network domain (NDb). The security parameters are (securely) provided to the network element (NEa), which extracts the session key (K) and forwards the freshness token (FRESH) to the KMC (AAAb) of the second domain (NDb) through a second network element (NEb). Based on the token (FRESH) and the shared master key (KAB), the KMC (AAAb) generates a copy of the session key (K), which is (securely) provided to the second network element (NEb).
    Type: Application
    Filed: February 11, 2004
    Publication date: July 12, 2007
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rolf Blom, Mats Naslund, Elisabetta Carrara, Fredrik Lindholm, Karl Norrman
  • Secure content sharing in digital rights management
    Publication number: 20040019801
    Abstract: Method and system for securely sharing content in real-time systems over heterogeneous networks. Cryptographic mechanisms of the content are used to protect the confidentiality and the integrity of the content. The confidentiality/integrity protection may be performed either before storing the content on the content server (i.e., pre-encryption), or by the content server while the content is being sent (i.e., real-time encryption).
    Type: Application
    Filed: May 14, 2003
    Publication date: January 29, 2004
    Inventors: Fredrik Lindholm, Elisabetta Carrara, Bjorn Jonsson, Per-Olof Nerbrant