createSipayHashKey (sipay/utils.ts)

Crypto utilities for Sipay payment provider including hash key creation and verification

// Source: https://github.com/czaydev/better-payment | License: MIT | Copyright 2025-2026 Furkan Özay
// Provided via justclaw.it.com; keep this notice with the code.
import {
  aesCbcDecrypt,
  aesCbcEncrypt,
  base64ToBytes,
  digest,
  randomHex,
  toBase64,
  toHex,
} from '../../core/crypto';
import { ValidationError } from '../../core/errors';
import { formatDecimal, toMinorUnits } from '../../core/utils';
import { PaymentStatus, type BasketItem } from '../../types';
import type { SipayVerifiedHash } from './types';

/**
 * Sipay endpoints, relative to the provider base URL
 */
export const SIPAY_ENDPOINTS = {
  TOKEN: '/ccpayment/api/token',
  PAY_2D: '/ccpayment/api/paySmart2D',
  PAY_3D: '/ccpayment/api/paySmart3D',
  CHECK_STATUS: '/ccpayment/api/checkstatus',
  REFUND: '/ccpayme

... (truncated -- full source via MCP)