e-cypher
Live example at cozy.computer/e-cypher
Take a paragraph of English letters and convert it to e-cypher; take a paragraph of e-cypher and convert it to English.
In e-cypher, each letter is lowercased and replaced by a string of repeating e characters, where a = 1 (a -> e), b = 2 (b -> ee), c = 3 (c -> eee).... Additionally, capital e (E) is used to denote character breaks. Other characters are preserved.
Example of converting an English phrase to e-cypher:
"Green eggs and ham" ->
eeeeeeeEeeeeeeeeeeeeeeeeeeEeeeeeEeeeeeEeeeeeeeeeeeeeeE eeeeeEeeeeeeeEeeeeeeeEeeeeeeeeeeeeeeeeeeeE eEeeeeeeeeeeeeeeEeeeeE eeeeeeeeEeEeeeeeeeeeeeeeE
Repeating letter cyphers with ecypher.js
You can make a repeating-letter cypher with other letters besides e and with other alphabets besides English using ecypher.js.
import * as ecypher from './ecypher.js';
const aCypher = ecypher.buildCypher("abcdefghijklmnopqrstuvwxyz", "a");
console.log(ecypher.encypher("hello", aCypher));
// Outputs: aaaaaaaaAaaaaaAaaaaaaaaaaaaAaaaaaaaaaaaaAaaaaaaaaaaaaaaaA
console.log(ecypher.decypher(
"aaaaaaaaAaaaaaAaaaaaaaaaaaaAaaaaaaaaaaaaAaaaaaaaaaaaaaaaA",
aCypher
));
// Outputs: hello