Ed25519 Key Generator

What is Ed25519?

Ed25519 is a modern elliptic-curve signature scheme based on the Edwards-curve Diffie-Hellman function over Curve25519, designed by Daniel J. Bernstein and colleagues. It is notable for its small key size (32 bytes each), fast signing and verification, and resistance to side-channel attacks. Ed25519 is widely used in SSH (OpenSSH's preferred key type since 6.5), TLS 1.3, JWT (OKP keys), and secure messaging protocols. Browser support arrived in Chrome 113 (May 2023), Firefox 119 (October 2023), and Safari 17 (September 2023). Keys are exported in standard SPKI (public) and PKCS#8 (private) formats encoded as PEM, compatible with OpenSSL and Node.js. All computation runs entirely in your browser via the Web Crypto API — no data is transmitted.