How to resolve the algorithm One-time pad step by step in the J programming language

Published on 12 May 2024 09:40 PM
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How to resolve the algorithm One-time pad step by step in the J programming language

Table of Contents

Problem Statement

Implement a One-time pad, for encrypting and decrypting messages. To keep it simple, we will be using letters only. To support the management of pad-files:

For example, here is the data from Wikipedia:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm One-time pad step by step in the J programming language

Source code in the j programming language

require'convert/misc/vig convert/misc/ascii85'
randseq=: {{ 2!:0'dd 2>/dev/null if=/dev/urandom count=1 bs=',":y }}
genpad=: {{ EMPTY [ (randseq y) fwrite x }}
encrypt=: {{ toascii85 (fread x) 0 vig a. y }}
decrypt=: {{ (fread x) 1 vig a. fromascii85 y }}


   'example' genpad 1000
   'example' encrypt 'this is a test'
hc>*>I2nEB,6b#MdE;~>

   'example' decrypt 'hc>*>I2nEB,6b#MdE;~>'
this is a test


  

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