Patents by Inventor Luis G. Rueda

Luis G. Rueda 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).

  • Cryptosystem for data security
    Patent number: 7508935
    Abstract: A method and device for creating ciphertext from plaintext, and for decoding ciphertext, utilizing a tree structure for both encoding and decoding, the tree having leaves which are associated with plaintext symbols and the branches having assigned thereto a member of the ciphertext alphabet so that when encoding, a traversal is made between the root and the leaf corresponding to the plaintext and recording the ciphertext associated with each branch traversed, and when decoding, using the ciphertext to determine the branches to be traversed until a leaf is reached and recording the plaintext associated with that leaf.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: March 24, 2009
    Assignee: 3927296 Canada, Inc.
    Inventors: B. John Oommen, Luis G. Rueda
  • Cryptosystem for data security
    Publication number: 20040223608
    Abstract: A method and device for creating ciphertext from plaintext, and for decoding ciphertext, utilizing a tree structure for both encoding and decoding, the tree having leaves which are associated with plaintext symbols and the branches having assigned thereto a member of the ciphertext alphabet so that when encoding, a traversal is made between the root and the leaf corresponding to the plaintext and recording the ciphertext associated with each branch traversed, and when decoding, using the ciphertext to determine the branches to be traversed until a leaf is reached and recording the plaintext associated with that leaf.
    Type: Application
    Filed: March 24, 2004
    Publication date: November 11, 2004
    Inventors: B. John Oommen, Luis G. Rueda