Comparing Ed25519, HMAC, and RSA Keys for Binance API Requests

Summary

The document compares three API key types used to authenticate Binance trading and account requests. Ed25519 and RSA use asymmetric cryptography: the client keeps a private key to sign requests, while the exchange verifies signatures using a public key. HMAC uses a shared secret for signing and verification. The guide recommends Ed25519, describing it as faster and more compact than RSA while offering comparable security to a 3072-bit RSA key. It also notes that HMAC is deprecated and that RSA supports 2048- and 4096-bit keys.

The practical trade-off is between shared-secret handling, signature size, and computation cost. The guide characterizes HMAC as quick and compact but less secure because the secret is shared. RSA is presented as more secure than HMAC, though its larger signatures may reduce performance. These are general comparisons from the document, not a benchmark or a full security assessment. It points readers to separate request-signing documentation for implementation details.

Key ideas

• Ed25519 and RSA use private keys to sign requests and public keys for verification.
• HMAC relies on a shared secret for both signing and verification.
• The document recommends Ed25519 for its stated security and performance trade-offs.
• HMAC is described as deprecated, while RSA signatures are described as comparatively large.
• The overview does not provide benchmark results or complete implementation instructions.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.