Systems, methods and computer program products for...

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2008-03-25

2008-03-25

Smithers, Matthew B (Department: 2137)

Cryptography

Communication system using cryptography

Symmetric key cryptography

Reexamination Certificate

active

07349542

ABSTRACT:
Systems and methods provide encryption and decryption using wavelet transforms over finite fields. The wavelet encryption system and wavelet decryption system include one or more filters that receive a set of wavelet coefficients as input. The wavelet coefficients are then utilized by the wavelet encryption system to cause the filters to encrypt plaintext into cyphertext. The cyphertext is then decrypted by a wavelet decryption system, which is operable to reconstruct the original plaintext using wavelet transforms that reverse the effect of the wavelet encryption system.

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Dang et al., “Image Encryption for Secure Internet Multimedia Applications”, Aug. 2000, IEEE, pp. 395-403. □□
H. Ratha et al., “Secure Data Hiding in Wavelet Compressed Fingerprint Images”, 2000, ACM, pp. 127-130.
Shien Lu et al., Structural digital Signature for Image Authentication: An Incidental distortion Resistant Scheme, 2000, ACM, pp. 115-118.

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