Module credential 

Binance API credential handling and request signing.

This module provides two types of credentials:

• Credential: HMAC SHA256 signing for REST API and standard WebSocket
• Ed25519Credential: Ed25519 signing for WebSocket API and SBE streams

Credentials are resolved from standard environment variables (BINANCE_API_KEY/BINANCE_API_SECRET). The deprecated *_ED25519_* variables are no longer supported and will produce a clear error.

Structs

Credential

Binance API credentials for signing requests (HMAC SHA256).

Ed25519Credential

Binance Ed25519 credentials for WebSocket API authentication.

Enums

Ed25519CredentialError

Error type for Ed25519 credential creation.

SigningCredential

Unified signing credential that auto-detects Ed25519 vs HMAC key type.

Functions

resolve_credentials

Resolves API credentials from config or environment variables.