Ghosh, Jonaki
(2015)
Hill ciphers.
At Right Angles, 4 (3).
pp. 62-71.
ISSN 2582-1873
Abstract
we had described in the previous article that Hill ciphers are an application of matrices to cryptography.
Ciphers are methods for transforming a given message, the plaintext, into a new form that is unintelligible
to anyone who does not know the key (the transformation used to convert the plaintext). In a cipher the
key transforms the plaintext letters to other characters known as the ciphertext. The secret rule, that is,
the inverse key, is required to reverse the transformation in order to recover the original message. To use
the key to transform plaintext into ciphertext is to encipher the plaintext. To use the inverse key to
transform the ciphertext back into plaintext is to decipher the ciphertext.
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