NHN KCP Server Certificate

1Server Certificate

Extraction of data values from NHN KCP issued certificate,
For Merchant authentication, the certificate information issued by KCP must be delivered in text format.

The text value within the certificate must be serialized and delivered as the value of kcp_cert_info.


kcp_cert_info = "-----BEGIN CERTIFICATE-----MIIDgTCCAmmgAwIBAgIHkiG9w0……………
                fWn5Cay7pJNWXCnw4jIiBsTBa3q95RVRyMEcDgPwugMXPXGBwNoMOOpuQ==-----END CERTIFICATE-----";

the parameter kcp_cert_info is needed for requesting Authorization, cancel(mod), trade registration, inquery

2Send Signature Data

KCP utilizes hash signature to validate requested data from the merchant using the private key issued by KCP.
KCP Signature(kcp_sign_data) should be generated using the hash string listed below and encoded
with SHA256withRSA algorithm with the given Private Key.

the parameter kcp_sign_data is needed for requesting inquery cancel(mod)

KCP signature for MOD API is as follows site_cd + "^" + tno + "^" + mod_type
※ Please request after encoding with SHA256withRSA.


kcp_sign_data = "QdwMF6y3GU1JTVkSv7Yn20CCCTeFrKkjvrdZOjShiFibFo...cA0nyX+4HEUZ4Fy3U+htmkZqAfJlje
                                                 ujC1KAL5Flnzqbp5Tst5p5SvZ...0qH7NSq0c6BpedDZb04w=="