How to encode numbers into characters?

Question

JavaScript

There is data that consists of 12 digits.
0-9
, (comma)
- (minus)
Before sending to the server, I want to encode in A-Za-z0-9+characters.
This will reduce traffic.
How can it be encrypted and decrypted?
Maybe there are libraries? preferably in JavaScript

Answer 1

I know a tricky way!
1) Take and present the first set of characters as a NUMBER in the 12-decimal system (0-9+","+"-")
2) Count how many CHARACTERS you have in the new system (A-Za-z0-9+characters)
3) You transfer to the system with the specified base - obviously the number will be SHORT
4) You transfer, everything is back on the other side
PS. with strings of 12 digits, this will give a better result than options with standard frequency stop algorithms

Answer 2

base64 + optional GZIP. I would not bother with data compression at 12 bytes.

Answer 3

Encode numbers into characters, create an array of 12 characters, numbers 0-9 will be array indexes, well, minus with a comma there too. And to encrypt in js from a hacker, in my opinion, is useless. Anyone who wants to, will parse any obfuscated code. and for users it may be enough xor to do.

Answer 4

md5, SHA-2 hash, no?