Setup
Step 1. Login Merchant Portal​
Access https://bo-stag.kira.asia, then on the Sidebar from the left, go to Settings -> Development Settings

Step 2. Generate Credentials​
If this is Merchant first visit to this page, please fill up the Redirect URL, Callback URL, Withdraw Callback URL, and generate for Key, Secret, along a keypair of PublicKey and PrivateKey.
note
Please Keep the Private Key safe.
Step 3. Store them as Environment Variable or in Configuration file​
From the Development Settings, technically there are 5 fields which are required to be save as Environment Variable or Configuration file. For instance as below:
CLIENT_ID=10020
CLIENT_SYMMETRIC_KEY=PCd1dlEmFnBXaVce06Pzp7Vike0oHnVJ
CLIENT_SECRET=F0NfID1ftdGdu27ybGMfT3vqqCMM9gwO
PRIVATE_KEY="-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----"
SERVER_PUB_KEY="-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApkgv8hWMIReydv2wkA7z
0cy8SLCCDN+Rnz1G50QMPF+THkRdvks5F9FBMzpJWVHpnxmj7TDUEWAc1xJDcr3b
qkqId1cdgNeQ5KYDnER+UsVvQOkWPh3P+kDc9wvDIR6XKqeZnhtWvsYtI1cbivs/
bTqV18iIhEE0zHLkWL7aMO/n4KcMyu0gjqnC1RdhCGRPw1iUFvoX4EIrcnhZQUe3
KbA9Ko15EgwGLIC36KuB6iYWWnck9mRi2sWVXK3ve8rRANCWq7zQ2lxj5bSUb1I9
2eA4/GJQubNU0ShA8Y36/MEpep5q+YNHSEe0b9L4ObP5kI7RxLAXf2+oRkSpnXmJ
9QIDAQAB
-----END PUBLIC KEY-----"
And now you are ready to move on to SDK section for integration or Payment API for more information.