@opendatalabs/vana-sdk/dist/crypto/keys/derive.cjs

A TypeScript library for interacting with Vana Network smart contracts.

"use strict";
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 derive_exports = {};
__export(derive_exports, {
  MASTER_KEY_MESSAGE: () => MASTER_KEY_MESSAGE,
  deriveMasterKey: () => deriveMasterKey,
  deriveScopeKey: () => deriveScopeKey,
  recoverServerOwner: () => recoverServerOwner
});
module.exports = __toCommonJS(derive_exports);
var import_hkdf = require("@noble/hashes/hkdf");
var import_sha2 = require("@noble/hashes/sha2");
var import_viem = require("viem");
const MASTER_KEY_MESSAGE = "vana-master-key-v1";
function deriveMasterKey(signature) {
  const hex = signature.slice(2);
  if (hex.length !== 130) {
    throw new Error(
      `Invalid signature length: expected 130 hex chars (65 bytes), got ${hex.length}`
    );
  }
  if (!/^[0-9a-fA-F]+$/.test(hex)) {
    throw new Error("Invalid signature: contains non-hex characters");
  }
  const bytes = new Uint8Array(65);
  for (let i = 0; i < 65; i++) {
    bytes[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
  }
  return bytes;
}
async function recoverServerOwner(masterKeySignature) {
  return (0, import_viem.recoverMessageAddress)({
    message: MASTER_KEY_MESSAGE,
    signature: masterKeySignature
  });
}
function deriveScopeKey(masterKey, scope) {
  const salt = new TextEncoder().encode("vana");
  const info = new TextEncoder().encode(`scope:${scope}`);
  return (0, import_hkdf.hkdf)(import_sha2.sha256, masterKey, salt, info, 32);
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  MASTER_KEY_MESSAGE,
  deriveMasterKey,
  deriveScopeKey,
  recoverServerOwner
});
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