Data hiding in compiled program binaries for supplementing...

Details Data hiding in compiled program binaries for supplementing... Data hiding in compiled program binaries for supplementing...

2006-06-02

2010-11-23

Bullock, Jr., Lewis A (Department: 2193)

Electrical computers and digital processing systems: processing

Byte-word rearranging, bit-field insertion or extraction,...

C712S041000, C712S220000, C712S226000, C717S151000

Reexamination Certificate

active

07840789

ABSTRACT:
Bit reductions in program instructions are achieved by determining the set of bit patterns in bit locations of the instructions. If only a subset of bit patterns is present in the instructions, they may be represented by an index value having a smaller number of bits. The index value may be substituted into the instruction and later used in decoding by referencing a corresponding bit pattern in a lookup table. The bit-reduction in the instruction makes way for supplemental data bits which may then be embedded.

REFERENCES:
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patent: 5745569 (1998-04-01), Moskowitz et al.
patent: 6779101 (2004-08-01), Berg et al.
El-Khalil, R., et al., preprint of “Hydan: Hiding Information in Program Binaries”, presented at ICICS'04: Sixth International Conference on Information and Communications Security, Malaga, Spain, Oct. 27-29, 2004, preprint available at www1.cs.columbia.edu/˜angelos/Papers/hydan.pdf.

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