@ledgerhq/hw-app-btc/lib/compressPublicKey.js

Ledger Hardware Wallet Bitcoin Application API

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.compressPublicKey = void 0;
function compressPublicKey(publicKey) {
    const prefix = (publicKey[64] & 1) !== 0 ? 0x03 : 0x02;
    const prefixBuffer = Buffer.alloc(1);
    prefixBuffer[0] = prefix;
    return Buffer.concat([prefixBuffer, publicKey.slice(1, 1 + 32)]);
}
exports.compressPublicKey = compressPublicKey;
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