Vishwanath Ullagaddi

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This paper introduces a self-synchronous stream cipher with a considerable key space. In the proposed technique, the parity bit plane of a public image is used to encrypt the message. Simulation results showed that the histogram of the ciphered image is uniform representing almost equivalent probability of occurrence of each intensity level. The entropy of(More)
This paper proposes a method of hiding classified data in images based on three different levels of security. Instead of hiding data directly, pixels are selected randomly and their higher nibble bits are matched with the data bits. A two bit code (2BC) is generated to encode the location of the matching bits. The two bit code is embedded in the image based(More)
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