Authentication Rules
| Type | Description |
|---|---|
| Authentication Algorithm | HmacSHA256 |
| Authentication Information | mac = HMAC(hmac_algorithm, key, hmacinput) with: - hmac_algorithm: is a security method registered by Merchant with Zalopay, the default is HmacSHA256 - key: provided by Zalopay at registration - hmacinput: specified by each API |