Generate creates a private key in the OpenSSH PEM format and public key in the authorized key format.

ParseAlgorithm returns a valid Algorithm or error if input is not a valid.

AlgorithmECDSA is the Digital Signature Algorithm (DSA) using NIST Elliptic Curve.

AlgorithmEd25519 is the Edwards-curve Digital Signature Algorithm using Curve25519.

AlgorithmRSA4096 is the venerable Rivest-Shamir-Adleman algorithm and creates a key with a fixed size of 4096-bit.