Patents Assigned to Shana Corporation
  • Secure electronic forms permitting layout revision
    Patent number: 6028938
    Abstract: Techniques for ensuring the security of forms data are disclosed. The layout for a particular form is signed separately from the data used to fill out the form using encryption techniques. The signed data is related to the signed layout in a way which permits the layout to be changed without requiring the data to be changed while still guaranteeing that a changed layout does not change the original meaning of the signed data.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: February 22, 2000
    Assignee: Shana Corporation
    Inventors: Wayne Allan Malkin, Charles David Perman