@coolwallet/sol/lib/utils/account.js

Coolwallet Solana sdk

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createProgramAddressSync = createProgramAddressSync;
var _bs = _interopRequireDefault(require("bs58"));
var _bn = _interopRequireDefault(require("bn.js"));
var _jsSha = require("js-sha256");
var _stringUtil = require("./stringUtil");
var _ed = require("./ed25519");
var MAX_SEED_LENGTH = 32;
var toBuffer = function toBuffer(arr) {
  if (Buffer.isBuffer(arr)) {
    return arr;
  } else if (arr instanceof Uint8Array) {
    return Buffer.from(arr.buffer, arr.byteOffset, arr.byteLength);
  } else {
    return Buffer.from(arr);
  }
};
function createProgramAddressSync(seeds, programId) {
  var buffer = Buffer.alloc(0);
  seeds.forEach(function (seed) {
    if (seed.length > MAX_SEED_LENGTH) {
      throw new TypeError("Max seed length exceeded");
    }
    buffer = Buffer.concat([buffer, toBuffer(seed)]);
  });
  buffer = Buffer.concat([buffer, (0, _stringUtil.toBase58Buffer)(programId), Buffer.from('ProgramDerivedAddress')]);
  var publicKeyBytes = new _bn["default"]((0, _jsSha.sha256)(buffer), 16).toArray(undefined, 32);
  if ((0, _ed.is_on_curve)(publicKeyBytes)) {
    throw new Error("Invalid seeds, address must fall off the curve");
  }
  return _bs["default"].encode(publicKeyBytes);
}
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