Glossary

ECDSA

Elliptic Curve Digital Signature Algorithm

Each signature uses a secret per-signature nonce, and a repeated or biased nonce reveals the private key; deterministic nonces (RFC 6979) or EdDSA avoid that risk.

Defined in: NIST FIPS 186-5, Digital Signature Standard · RFC 6979

Covered in

Reference

Choose cryptographic algorithms and parameters by job

A sourced quick reference for October 2026: which algorithm and parameters to use for encryption, hashing, passwords, MACs, signatures, key agreement, key derivation, randomness and TLS, the matching APIs in Node.js, Python, Java, Go and .NET, and where post-quantum migration stands.

Practice: Insecure randomness lab: Generate unguessable API keys