For example, let alpha=5 beta=2 So, we are working on 5x + 2. Take a plaintext letter such as A(=0), it is encrypted to 5*0 + 2 (mod 26) which gives 2 the letter C plaintext : AFFINE ciphertext: CBBQPW Number and Letter reference: 0 a 1 b 2 c 3 d 4 e 5 f 6 g...
The Affine cipher is a monoalphabetic substitution cipher and it can be the exact same as a standard Caesarian shift when a is 1. Mathematically, it is represented as . Decryption is a slightly different formula, . Examples: Wikipedia - The example Wikipedia uses to show off the cipher. To...
Affine Cipher Usage Theaffine cipheris a type of monoalphabeticsubstitution cipher. It encrypts a text using anaffine function(f(x) = ax + b). Detailed Explanations : How it works? Firstly, each character of the initial text (message to encrypt) is converted in a number from 0 to 25, ...
As an example of the application, a stream cipher is described. The procedure to implement the PPGA is explained with an evaluation of the results. Experimental result of optical implementation show the capabilities of the method... J Tanida,T Sasaki - Springer New York 被引量: 1发表: 2005...
Letpandcrepresentletters(p,carenumbersbetween0and26)wherepisaplaintextletterandcisaciphertextletterthen:c=ap+bmod26p=a-1(c-b)mod26 2 Usethemousebuttontoactivateeachpresentationstep AffineExample Selectthekey(a,b)=(7,3)gcd(7,26)=17-1mod26=15(since7x15=105and105mod26=1)Thegeneralencipher/...
As an example of the application, a stream cipher is described. The procedure to implement the PPGA is explained with an evaluation of the results. Experimental result of optical implementation show the capabilities of the method.doi:10.1007/0-387-25096-4_12Tanida, Jun...
An example plaintext to ciphertext using Atbash: In the affine cipher the letters of an alphabet of size m are first mapped to the integers in the range 0..m - 1. It then uses modular arithmetic to transform the integer that each plaintext letter corresponds to into another integer that...
(typically at least 80 variables), obtained as higher-order derivatives of a function g which describes, for example, the first output bit of the stream cipher as a function of the key and initialisation vector. although explicit algorithms are available for computing g and f (in the case ...
C++ Header only string obfuscator library using metaprogramming. Affine Cipher technique is used for encryption and decryption. - Litch666/String-Obfuscator-In-Compile-Time
Example Here is a Python implementation for affine cipher encryption and decryption algorithm using predefined keys. Check the code below − # Affine cipher Classclassaffine_cipher(object):DIE=128KEY=(7,3,55)def__init__(self):passdefencryptChar(self,char):K1,K2,kI=self.KEYreturnchr((K1*...