A pure JavaScript library for parsing and converting PuTTY private key files (.ppk) to OpenSSH format. Supports all PPK versions (v2 and v3) and key types (RSA, DSA, ECDSA, Ed25519). Handles both encrypted and unencrypted keys with full MAC verification. No native dependencies or compilation required - works everywhere Node.js runs.

Generate, convert and inspect cryptographic keys without sending sensitive data to third-party services.