Substitution Ciphers
Substitution ciphers are about replacing every group of plaintext letters with another predefined group. For decrypting, a reverse substitution should be used.
There are four main categories of substitution ciphers:
Simple Substitution Ciphers
Simple substitution ciphers replace each plaintext character with another predefined character.
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Homophonic substitution ciphers replace each plaintext character with one of a few characters available.
Read MorePolygraphic Substitution Ciphers
Polygraphic substitution ciphers, in which the whole groups of characters are substituted.
Read MorePolyalphabetic Substitution Ciphers
Polyalphabetic substitution ciphers, in which each plaintext character is replaced with another, constantly changing character.
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Date: 2020-03-09
