Patents by Inventor Noel McCullagh

Noel McCullagh 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).

  • Patent number: 8285996
    Abstract: A database management system (1) comprises up to fifty or more workstations (2), each for a user. The environment may, for example, be a hospital and the system manages medical records in a secure manner. Each user has a private key issued by a KGC (5). A database controller (3) updates a secure database (3) with data and associated signatures generated by the user workstations (2). Thus every record of the secure database (3) has a signature to provide full traceability and non-repudiation of data edits/updates. It is important for the system (1) that the signatures are verified on a regular basis, say every hour. Such a task would be extremely processor-intensive if the database (3) is large. However this is performed by a verification processor (4) of the system (1) in a much shorter time than heretofore, t1+n(&Dgr;), where t1 is the time for one verification, n is the number of signatures, and &Dgr; is a time value which is a very small proportion of t1 (less than 1%).
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: October 9, 2012
    Assignee: Dublin City University
    Inventors: Noel McCullagh, Michael Scott, Neil Costigan
  • Patent number: 7860247
    Abstract: A method of performing IBE cryptography comprising the steps of a key generation server transmitting a master public key to a processor, the processor generating or retrieving a fresh master public key derived from the master public key transmitted by the key generation centre, and the processor using the fresh master public key to generate a public key for transmitting a message to a recipient device having a corresponding private key. The processor may store the fresh master public key in a read only memory for repeated use or it may dynamically generate it. To dynamically generate the fresh master public key the processor multiplies the original master public key by a curve co-factor. The processor may be incorporated into a hand-held card, and it may transfer information to a linked second processor for performing some of the calculations.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: December 28, 2010
    Assignee: Dublin City University
    Inventors: Noel McCullagh, Michael Scott, Neil Costigan
  • Publication number: 20080144837
    Abstract: A method of performing IBE cryptography comprising the steps of a key generation server transmitting a master public key to a processor, the processor generating or retrieving a fresh master public key derived from the master public key transmitted by the key generation centre, and the processor using the fresh master public key to generate a public key for transmitting a message to a recipient device having a corresponding private key. The processor may store the fresh master public key in a read only memory for repeated use or it may dynamically generate it. To dynamically generate the fresh master public key the processor multiplies the original master public key by a curve co-factor. The processor may be incorporated into a hand-held card, and it may transfer information to a linked second processor for performing some of the calculations.
    Type: Application
    Filed: November 14, 2005
    Publication date: June 19, 2008
    Inventors: Noel McCullagh, Michel Scott, Neil Costigan
  • Publication number: 20070028114
    Abstract: A database management system (1) comprises up to fifty or more workstations (2), each for a user. The environment may, for example, be a hospital and the system manages medical records in a secure manner. Each user has a private key issued by a KGC (5). A database controller (3) updates a secure database (3) with data and associated signatures generated by the user workstations (2). Thus every record of the secure database (3) has a signature to provide full traceability and non-repudiation of data edits/updates. It -is important for the system (1) that the signatures are verified on a regular basis, say every hour. Such a task would be extremely processor-intensive if the database (3) is large. However this is performed by a verification processor (4) of the system (1) in a much shorter time than heretofore, t1+n(&Dgr;), where t1 is the time for one verification, n is the number of signatures, and &Dgr; is a time value which is a very small proportion of t1 (less than 1%).
    Type: Application
    Filed: September 28, 2006
    Publication date: February 1, 2007
    Inventors: Noel McCullagh, Michael Scott, Nell Costigan