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NHN KCP payment gateway

Accept Credit/Debit Cards, Bank Transfer, and more payments in your CS-Cart store via NHN KCP. Secure redirect-based checkout for merchants in South Korea.
CartModules
Last update: 18.03.2026 Supports current CS-Cart version
CartModules-NHN-KCP
$198.00
 $158.40
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NHN KCP payment gateway
$198.00
 $158.40

Accept Payments via NHN KCP (South Korea)

Integrate NHN KCP, South Korea's leading payment gateway, with your CS-Cart store. Accept credit cards, bank transfers, virtual accounts, and mobile payments from Korean customers with HMAC-SHA256 signature authentication and comprehensive response code handling.

Key Features

  • Multiple Payment Methods — Credit cards, bank transfers, virtual accounts, mobile payments
  • HMAC-SHA256 Authentication — Cryptographic signature on all API requests
  • Callback Verification — Signature validation on all payment callbacks
  • Transaction Inquiry — Verify payment status via KCP inquiry API
  • Response Codes — Detailed handling of 20+ KCP response codes
  • Test Mode — Full sandbox support for development and testing
  • Order Status Mapping — Map payment outcomes to your CS-Cart order statuses

How It Works

  1. Customer selects NHN KCP at checkout
  2. Customer is redirected to KCP's hosted payment page
  3. Customer selects payment method and completes payment
  4. KCP processes the payment and sends signed callback
  5. Your store verifies the callback and confirms the order

Requirements

  • CS-Cart 4.x (Multi-Vendor or Ultimate)
  • PHP 7.1+
  • NHN KCP merchant account
  • Site Code and Site Key from NHN KCP portal

Setup

  1. Install the addon in CS-Cart
  2. Get your Site Code and Site Key from NHN KCP merchant portal
  3. Add a new payment method in CS-Cart and enter your credentials
  4. Start accepting payments from Korean customers

Compatibility

  • CS-Cart 4.x, Multi-Vendor, Ultimate
  • PHP 7.1, 7.2, 7.3, 7.4, 8.0, 8.1, 8.2, 8.3+
  • Currency: KRW (Korean Won)
Payment type
One-time payment
Product
  • Store Builder
  • Store Builder Ultimate
  • Multi-Vendor
  • Multi-Vendor Plus
  • Multi-Vendor Ultimate
Compatible versions
  • 4.20.1
  • 4.19.1.SP2
  • 4.19.1.SP1
  • 4.19.1
  • 4.18.4
  • 4.18.3
  • 4.18.2.SP1
  • 4.18.2
  • 4.18.1.SP1
  • 4.18.1
  • 4.17.2.SP3
  • 4.17.2.SP2
  • 4.17.2.SP1
  • 4.17.2
  • 4.17.1
  • 4.16.2
  • 4.16.1
  • 4.15.2
  • 4.15.1.SP4
  • 4.15.1.SP3
  • 4.15.1.SP2
  • 4.15.1.SP1
  • 4.15.1
  • 4.14.3
  • 4.14.2.SP1
  • 4.14.2
  • 4.14.1.SP1
  • 4.14.1
  • 4.13.3
  • 4.13.2.SP2
  • 4.13.2.SP1
  • 4.13.2
  • 4.13.1
  • 4.12.2
  • 4.12.1
  • 4.11.5
  • 4.11.4
  • 4.11.3
  • 4.11.2
  • 4.11.1
  • 4.10.4.SP1
  • 4.10.4
  • 4.10.3
  • 4.10.2
  • 4.10.1
  • 4.9.3
  • 4.9.2
  • 4.9.1
  • 4.8.2
  • 4.7.4
  • 4.6.3
Localizations
  • English

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CartModules CartModules
Cartmodules operates a team of professional web designers and developers, providing premium

Contact information

Email
sales@cartmodules.com
Phone +91-96538-49089
Website
https://www.cartmodules.com

Cartmodules operates a team of professional web designers and developers, providing premium CS-Cart services like add-ons development and theme development at affordable prices. We not only work effectively but smartly and deliver the best to our customers in shortest possible and ensuring quality of the deliverables.

We have an experienced team of professional having experience in PHP, JavaScript, Smarty, jQuery, CSS, Ajax, HTML5 and other programming languages and technologies. The development is inline with latest quality standards.

Our customers include a number of small, medium and large enterprises who are into e-commerce and want to expand further their business using technology.

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