Registers on the togo payment.PaymentProvider interface and is selected via
PAYMENT_DRIVER=paymob. Gateway API calls are scaffolded — see the Paymob docs.
Package paymob is a Paymob (Egypt) driver for togo payment. Set
PAYMENT_DRIVER=paymob + PAYMOB_API_KEY + PAYMOB_INTEGRATION_ID + PAYMOB_HMAC.
Optional PAYMOB_IFRAME_ID (for the hosted iframe URL) and PAYMOB_BASE_URL
(default: https://accept.paymob.com).
Checkout uses Paymob's 3-step flow: auth → register order → payment key →
iframe URL. Webhooks are verified with HMAC-SHA512 over the documented field
concatenation against PAYMOB_HMAC.