Fundamentals of Randomized Hybrid Cryptosystem

Fundamentals of Randomized Hybrid Cryptosystem

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The modern study of symmetric-key ciphers relates mainly to the study of block ciphers and stream ciphers and to their applications. A block ciphers take as input a block of plaintext and a key, and output a block of cipher text of the same size. The crypto systems which are in use are static i.e. only one of the standard algorithms is used at a time. If same encryption methods are used throughout the day and for days together continuously, the crypto analyzers may crack the code or find out the encryption method and may intrude or spy or hack the confidential data. This necessitates a robust ...