@gleif-it/did-webs-ts/dist/cjs/utils/document/computeXAndYForSecp256k1.js

did-webs typescript library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.computeXAndYForSecp256k1 = void 0;
const secp = require("@noble/secp256k1");
const base64UrlToBytes_js_1 = require("../conversions/base64UrlToBytes.js");
const bytesToBase64Url_js_1 = require("../conversions/bytesToBase64Url.js");
const computeXAndYForSecp256k1 = (compressedKey) => {
    const bytes = (0, base64UrlToBytes_js_1.base64UrlToBytes)(compressedKey);
    const hexKey = secp.etc.bytesToHex(bytes);
    const point = secp.ProjectivePoint.fromHex(hexKey); // Decompresses the point internally
    const rawX = secp.etc.numberToBytesBE(point.x);
    const rawY = secp.etc.numberToBytesBE(point.y);
    return {
        x: (0, bytesToBase64Url_js_1.bytesToBase64Url)(rawX),
        y: (0, bytesToBase64Url_js_1.bytesToBase64Url)(rawY),
    };
};
exports.computeXAndYForSecp256k1 = computeXAndYForSecp256k1;