Bitcoinjs-lib: How to get uncompressed address from public key?

[yakitorifoodie]

Hello,

I'm using the below method. May i know how to get an uncompressed address?

const { address } = bitcoin.payments.p2pkh({ pubkey: new Buffer(pubKey, 'hex') });
console.log(address);

Thanks.

[junderw]

use an uncompressed "pubKey" (130 length instead of 66 length.)

[yakitorifoodie]

Edit: i figured it :)

@junderw thank you very much. how to convert compressed public key to uncompressed one?

[junderw]

const uncompressedHex = bitcoin.ECPair.fromPublicKey(
  Buffer.from(pubKey, 'hex'),
  { compressed: false },
).publicKey.toString('hex')

in this case pubKey can be compressed or uncompressed. the ECPair will force it to uncompressed when you pass compressed: false as an option.