silly-cipher

A command line encoder-decoder

Written by Chris Wilson

new cli usage -

silly-cipher <path/to/dictionary> <inputfile[.txt.enc]> <key[number]>

e.g $ silly-cipher charChar.txt example.txt 50

will encode example.txt outputting example.txt.enc using the dictionary from charChar.txt and an offset of 50

$ silly-cipher charChar.txt example.txt.enc 50 will decode the coded file and output example.txt

the key must be a positive integer

• The program will auto-detect if the given dictionary substitutes all numeric or alphanumeric

• Program will encode or decode depending on the fileName extension (.txt 2nd argument will encode, .txt.enc 2nd argument will decode)

• A dictionary must consist of exactly 97 character substitutions

• The dictionary must contain all of the following characters for substitution

abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@£$%^&*()-_=+[]{};:'"|,.<>/?`~§±1234567890

• The dictionary e.g.(charChar.txt) must have exactly 97 lines each following the following format:- character,(space)[integer or character]

• integers must be in the range 0-99

• all substitutions must be unique

example encoding .txt files can be found here charChar.txt and here charNum.txt