@mysten/sui
Version:
Sui TypeScript API(Work in Progress)
78 lines (77 loc) • 2.77 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var ed25519_hd_key_exports = {};
__export(ed25519_hd_key_exports, {
derivePath: () => derivePath
});
module.exports = __toCommonJS(ed25519_hd_key_exports);
var import_bcs = require("@mysten/bcs");
var import_hmac = require("@noble/hashes/hmac");
var import_sha512 = require("@noble/hashes/sha512");
const ED25519_CURVE = "ed25519 seed";
const HARDENED_OFFSET = 2147483648;
const pathRegex = new RegExp("^m(\\/[0-9]+')+$");
const replaceDerive = (val) => val.replace("'", "");
const getMasterKeyFromSeed = (seed) => {
const h = import_hmac.hmac.create(import_sha512.sha512, ED25519_CURVE);
const I = h.update((0, import_bcs.fromHex)(seed)).digest();
const IL = I.slice(0, 32);
const IR = I.slice(32);
return {
key: IL,
chainCode: IR
};
};
const CKDPriv = ({ key, chainCode }, index) => {
const indexBuffer = new ArrayBuffer(4);
const cv = new DataView(indexBuffer);
cv.setUint32(0, index);
const data = new Uint8Array(1 + key.length + indexBuffer.byteLength);
data.set(new Uint8Array(1).fill(0));
data.set(key, 1);
data.set(new Uint8Array(indexBuffer, 0, indexBuffer.byteLength), key.length + 1);
const I = import_hmac.hmac.create(import_sha512.sha512, chainCode).update(data).digest();
const IL = I.slice(0, 32);
const IR = I.slice(32);
return {
key: IL,
chainCode: IR
};
};
const isValidPath = (path) => {
if (!pathRegex.test(path)) {
return false;
}
return !path.split("/").slice(1).map(replaceDerive).some(
isNaN
/* ts T_T*/
);
};
const derivePath = (path, seed, offset = HARDENED_OFFSET) => {
if (!isValidPath(path)) {
throw new Error("Invalid derivation path");
}
const { key, chainCode } = getMasterKeyFromSeed(seed);
const segments = path.split("/").slice(1).map(replaceDerive).map((el) => parseInt(el, 10));
return segments.reduce((parentKeys, segment) => CKDPriv(parentKeys, segment + offset), {
key,
chainCode
});
};
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