A New Public-Key Encryption Scheme Based on Non-Expansion Visual Cryptography and Boolean Operation
Currently, most of the existing public-key encryption schemes
are based on complex algorithms with heavy computations. In
1994, Naor and Shamir proposed a simple cryptography method
for digital images called visual cryptography. Existing visual
cryptography primitives can be considered as a special kind of
secret-key cryptography that does not require heavy
computations for encrypting and decrypting an image. In this
paper, we propose a new public-key encryption scheme for
image based on non-expansion visual cryptography and Boolean
operation. The proposed scheme uses only Boolean operations
and therefore requires comparatively lower computations.
Keywords: Public-key encryption, Visual cryptography, Pixel
expansion, Boolean operation
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