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Subject Item
dbpedia:Substitution_cipher
rdfs:comment
In cryptography, a substitution cipher is a method of encoding by which units of plaintext are replaced with ciphertext, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by performing the inverse substitution.Substitution ciphers can be compared with transposition ciphers.
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