🔐 Hardware-Entropied Asymmetric Key Generation
RSA & ECDSA Keypair Generator
Generate asymmetric cryptographic keypairs (RSA 2048/4096-bit & ECDSA P-256) in PKCS#8/SPKI PEM format using the native Web Cryptography API.
Private Key (PKCS#8 PEM)
Public Key (SPKI PEM)
🔒 100% Client-Side Privacy: All key generation is executed in your browser's Web Cryptography engine. Private keys never leave your device.
Asymmetric Cryptography: RSA vs ECDSA
- RSA (Rivest-Shamir-Adleman): Relies on the integer factorization problem. 2048-bit keys provide $112\text{-bit}$ symmetric security; 4096-bit provides $128\text{-bit}$ security.
- ECDSA (Elliptic Curve): Relies on the discrete logarithm problem over elliptic curves. A $256\text{-bit}$ ECDSA key offers comparable security to a $3072\text{-bit}$ RSA key with faster signature speeds.