信息安全凯撒密码
凯撒密码 (Caesar Cipher)
Caesar Cipheris one of the simplest encryption techniques. In this, every letter is represented by a fixed number. For example,Ais represented by 0,Bis represented by 1,Cis represented by 2, and so on (tillZ). InCaesar Cipherwe take a small integer value which we use for shifting. For example, if we took 3 as out shifting key and we are shifting towards the right side, thenAwill becomeD(AsA+3 = 0+3 = 3which is equal to D). Similarly,Bwould becomeEand so on. If we are doing left shift then D will becomeA,Ewould becomeBand so on. This method was invented by "Julius Caesar" who used this method for the privacy of his messages, hence was named after his name asCaesar Cipher
