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

2 Answers 2

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

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