Signature Guide

Unified Signing Rules

All countries use the same signing rules. Please refer to the Signature Guide.

Quick Guide

We use the HMAC-SHA256 signing algorithm.

Signing Steps

1. Sort parameters by ASCII order, excluding sign, sign_type, and empty values
2. Concatenate as key=value&key=value format (do NOT URL-encode values)
3. Sign with HMAC-SHA256 using your platform key

👉 For complete instructions and code examples, see the Signature Guide