Methods for data encryption using multiple layer steganography

Cryptography – Key management – Key distribution

Reexamination Certificate

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C380S279000, C380S278000

Reexamination Certificate

active

07039192

ABSTRACT:
A method for embedding a message within a file may include generating a session key [305]and encrypting the session key with a public key to produce an encrypted session key [310]. The message may be encrypted with the session key to produce an encrypted message [320]. A random number generator may be seeded with the public key [335], and the encrypted session key may be embedded throughout the file in locations corresponding to random numbers produced by the random number generator [340]. The random number generator may be seeded with the session key [345], and the encrypted message may be embedded throughout the file in locations corresponding to random numbers produced by the random number generator after the seeding with the session key [355].

REFERENCES:
patent: 5822436 (1998-10-01), Rhoads
patent: 2001/0004736 (2001-06-01), Hirano et al.
An adaptive data hiding technique for binary images; Tung-Hsiang Liu; Long-Wen Chang; Pattern Recognition, 2004 ICPR 2004. Proccedings of the 17th International Conference on; Vol. 4, Aug. 23-26, 2004 Page(s):831-833 vol. 4.
Secure identity authentication and logical access control for airport information systems; David et al..; Security Technology, Proceedings. IEEE 37th Annual 2003 International Carnahan Conference on Oct. 14-16, 2003 Page(s): 314-320.
Safe primes density and cryptographic applications; Duran Diaz, R.; Monteya Vitini, F.; Munez Masque, J.; Security Technology, 1999. Proceedings. IEEE 33rd Annual 1999 International Carnahan Conference on Oct. 5-7, 1999 Page(s):363-367.
Provos, Niels et al., “Detecting Steganographic Content on the Internet,” CITI Technical Report 01-11, University of Michigan, Aug. 31, 2001, 13 pages.

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