Please describe the techniques of Substitution Cipher and Transposition Cipher

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Please describe the techniques of Substitution Cipher and Transposition Cipher.

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Step 1

Technique for Substitution Ciphers:
Plain text characters are swapped out for other letters, integers, and symbols in substitution cypher technique. At the same time, the identity of the character is changed but its position is left unaltered.


Technique for Transposition Cipher:

Character positions in plain text are changed via the transposition cypher technique. The position of the character is altered but the identity of the character is preserved in the transposition cypher technique.

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