Validate if active public key and owner public key is correct

Question

How do i validate if user entered correct active public and owner public key (e.g. length, no forbidden characters entered) using javascript?

Answer 1

Use the eosjs-ecc library to validate keys in JavaScript:

const ecc = require('eosjs-ecc')

const pubkey = 'EOS7rHHE6Gp11zLdTio5xCcGd8KtnDcDYNRC5595hfeKTizePAKZP'
const wif = '5HzevvzwHzcQAZiMSJpZapj87QwtBrtPAwXc4yGwHowLhbujKbg'

console.log(ecc.isValidPublic(pubkey)) // true
console.log(ecc.isValidPrivate(wif)) // true

Answer 2

I believe you would just convert the private key to public with ecc.privateToPublic then compare the result to your pubkey variable.