Account Equity

HMAC-SHA256 signature (hex-encoded).

Unique request nonce (hex encoded, max 100 characters).

QFEX API Authentication requires four headers:

• x-qfex-public-key: Your public API key
• x-qfex-hmac-signature: HMAC signature of the request (hex encoded)
• x-qfex-nonce: Unique nonce for the request (hex encoded, max 100 characters)
• x-qfex-timestamp: Unix timestamp of the request

All four headers are required for authentication.

Signature Generation:

1. Generate a cryptographically secure random nonce (hex encoded, max 100 characters) and capture the current Unix timestamp.
2. Build the string ${nonce}:${unix_ts} and compute an HMAC-SHA256 using your secret key.
3. Hex-encode the HMAC result to get the signature.
4. Send the auth payload with all four headers. The nonce must be unique within a 15 minute window.

Important: The signature itself must be hex-encoded before being sent in the x-qfex-hmac-signature header.

Unix timestamp (seconds since epoch).