Patents by Inventor Perry Wagle

Perry Wagle 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).

  • POINTGUARD: METHOD AND SYSTEM FOR PROTECTING PROGRAMS AGAINST POINTER CORRUPTION ATTACKS
    Publication number: 20080060077
    Abstract: To protect computer programs against security attacks that attempt to corrupt pointers within the address space of the program, the value of a pointer is encrypted each time the pointer is initialized or modified, and then the value is decrypted before use, i.e., each time the pointer is read. Preferably, the encrypting and decrypting steps are effected by instructions generated by a compiler during compilation of the program. One convenient method of implementing the encrypting and decrypting steps is by XOR'ing the pointer with a predetermined encryption key value, which could be specially selected or selected at random.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 6, 2008
    Applicant: NOVELL, INC.
    Inventors: Stanley Cowan, Seth Arnold, Steven Beattie, Perry Wagle