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Signature

MD5 Signature Algorithm Deprecation

MD5 signature algorithm will be deprecated before 2026/03/31. Please migrate to HMAC-SHA256 before this date.

Unified Signature Specification

All countries use the same signature rules. Please refer to Signature.

Quick Guide​

We support the following two signature algorithms:

Algorithmsign_type Parameter ValueRecommendation
HMAC-SHA256HMAC-SHA256⭐ Recommended
MD5MD5 or omitLegacy compatible

Signature Steps​

  1. Sort parameters by ASCII order, exclude sign, sign_type, and empty values
  2. Concatenate as key=value&key=value format
  3. HMAC-SHA256: Sign directly with the key
  4. MD5: Append &{platform_key} then compute MD5 hash

👉 For complete instructions and code examples, please refer to Signature