jsonld-signatures-merkleproof2019/lib/cjs/utils/issuingAddress.js

A jsonld signature implementation to support MerkleProof2019 verification in Verifiable Credential context

import * as bitcoin from 'bitcoinjs-lib';
import * as secp256k1 from '@noble/secp256k1';
import { keccak256 } from '@ethersproject/keccak256';
import { Buffer as BufferPolyfill } from 'buffer';
export function computeBitcoinAddressFromPublicKey(publicKey, chain) {
    return bitcoin.payments.p2pkh({ pubkey: publicKey, network: bitcoin.networks[chain.code] }).address;
}
export function computeEthereumAddressFromPublicKey(publicKey, chain) {
    const buffer = typeof Buffer === 'undefined' ? BufferPolyfill : Buffer;
    const publicKeyString = publicKey.toString('hex');
    // Convert to uncompressed format
    const publicKeyUncompressed = buffer.from(secp256k1.Point.fromHex(publicKeyString).toBytes(false)).toString('hex').slice(2);
    // Now apply keccak
    const address = keccak256(buffer.from(publicKeyUncompressed, 'hex')).slice(64 - 38);
    return `0x${address.toString()}`;
}