×

Interleaved data and instruction streams for application program obfuscation

  • US 20050071664A1
  • Filed: 09/25/2003
  • Published: 03/31/2005
  • Est. Priority Date: 09/25/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method for executing an obfuscated application program, the method comprising:

  • receiving an application program that comprises application program instructions and application program data;

    determining an application program instruction location permutation to apply to a current instruction counter value;

    determining an application program data location permutation to apply to a current data location counter value;

    receiving said current instruction counter value;

    applying said application program instruction location permutation to said current instruction counter value to obtain a first reference to an application program instruction in an instruction stream to execute;

    if said application program instruction references application program data, applying said application program data location permutation to data referenced by said application program instruction to obtain a second reference to data to access, said data to access interleaved with application program instructions in said instruction stream; and

    executing said application program instruction.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×