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But if one of the two shares is structured recursively, the efficiency of visual cryptography can be increased to 100%. [5] Some antecedents of visual cryptography are in patents from the 1960s. [6] [7] Other antecedents are in the work on perception and secure communication. [8] [9] Visual cryptography can be used to protect biometric ...
Main page; Contents; Current events ... share alike – If ... visual cryptography 3 choose 2: Image title: A visual cryptography method allowing any two ...
Secret sharing was invented independently by Adi Shamir [1] and George Blakley [2] in 1979. A demonstration of visual cryptography: when two same-sized binary images of apparently random black-and-white pixels are superimposed, the Wikipedia logo appears
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visual cryptography development: Image title: Creation of masks to let overlaying n transparencies A, B,… printed with black rectangles reveal a secret image by CMG Lee. n = 4 requires 16 (2⁴) sets of codes each with 8 (2⁴⁻¹) subpixels, which can be laid out as 3×3 with the extra bit always black. Width: 100%: Height: 100%
visual cryptography stenography: Image title: Creation of masks to let overlaying transparencies A and B printed with black rectangles reveal a secret image by CMG Lee. Each corresponding pixel in the component images is randomly rotated to avoid orientation leaking information about the secret image. Width: 100%: Height: 100%
In cryptography, a hybrid cryptosystem is one which combines the convenience of a public-key cryptosystem with the efficiency of a symmetric-key cryptosystem. [1] Public-key cryptosystems are convenient in that they do not require the sender and receiver to share a common secret in order to communicate securely. [2]
Accredited Standards Committee X9, American National Standard X9.62-2005, Public Key Cryptography for the Financial Services Industry, The Elliptic Curve Digital Signature Algorithm (ECDSA), November 16, 2005. Certicom Research, Standards for efficient cryptography, SEC 1: Elliptic Curve Cryptography, Version 2.0, May 21, 2009.