Piracy prevention using unique module translation

Details Piracy prevention using unique module translation Piracy prevention using unique module translation

2005-05-04

2009-10-13

Smithers, Matthew B (Department: 2437)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Security kernel or utility

C717S168000, C711S164000

Reexamination Certificate

active

07603552

ABSTRACT:
A method for providing solidified software in a computing environment includes creating a new reference for a function in a function table; copying an address of the function and associating the address with the new reference; replacing the address associated with an old reference of the function with a dummy address; and substituting each old reference in normal code with the new reference, where injected code is not able to execute in the computing environment. The function table entries can be further randomized by reordering the entries, introducing intermediate mappings, or providing non-operative entries. Alternatively, all or part of the code of the function can be copied and moved to a different storage location and associated with the new reference. The copied code can be further randomized by the insertion of dummy code, utilizing reverse peephole techniques, varying the size of the copied portion, or interleaving non-operative code.

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Kurt Gutzmann, “Access Control and Session Management in the HTTP Environment,” Jan./Feb. 2001, pp. 26-35, IEEE Internet Computing.

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