jsonld-signatures-merkleproof2019
Version:
A jsonld signature implementation to support MerkleProof2019 verification in Verifiable Credential context
57 lines (56 loc) • 2.57 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.computeBitcoinAddressFromPublicKey = computeBitcoinAddressFromPublicKey;
exports.computeEthereumAddressFromPublicKey = computeEthereumAddressFromPublicKey;
const bitcoin = __importStar(require("bitcoinjs-lib"));
const elliptic_1 = require("elliptic");
const js_sha3_1 = require("js-sha3");
const buffer_1 = require("buffer");
function computeBitcoinAddressFromPublicKey(publicKey, chain) {
return bitcoin.payments.p2pkh({ pubkey: publicKey, network: bitcoin.networks[chain.code] }).address;
}
function computeEthereumAddressFromPublicKey(publicKey, chain) {
const publicKeyString = publicKey.toString('hex');
const ellipticCurve = new elliptic_1.ec('secp256k1');
// Decode public key
const key = ellipticCurve.keyFromPublic(publicKeyString, 'hex');
// Convert to uncompressed format
const publicKeyUncompressed = key.getPublic().encode('hex').slice(2);
const buffer = typeof Buffer === 'undefined' ? buffer_1.Buffer : Buffer;
// Now apply keccak
const address = (0, js_sha3_1.keccak256)(buffer.from(publicKeyUncompressed, 'hex')).slice(64 - 40);
return `0x${address.toString()}`;
}