Compatible with v2.0 +

GTpay payment module allows your to integrate your opencart application with the GTBank payment gateway in Nigeria. Update has been made to the extension to take care of the new specification and the gtpay_hash from GTBank as at June 2015.

PS: GTPay Id should be used and not interswitch id
*** Update includes the hashkey SHA512 security implementation of GTBank.
*** Merchant should request for hasKey from GTBank

Updated the extension's response page to pass the GTBank/Interswitch UAT Scripts.
http://www.storeplugins.com/opencart/
http://www.storeplugins.com/opencart/admin

admin credential:
demo
demoadmin