Hill ciphers (invented in 1929) are a type of block cipher: the ciphertext character that ... The encryption key for a Hill cipher is a square matrix of integers.
how-to-find-key-matrix-in-hill-cipher
Because the Hill cipher is linear, we only need to find 2 bigram correspondences to determine the key matrix. For example, if we knew that 'th' was encrypted to .... by APU Siahaan · Cited by 114 — Genetic algorithms offer the optimized way to determine the key used for encryption and decryption on the. Hill Cipher. By determining the evaluation function in ... 939c2ea5af
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