sodium_crypto_sign_seed_keypair

Deterministically derive the key pair from a single key

string sodium_crypto_sign_seed_keypair(#[\SensitiveParameter]string $seed)

Clamps the seed to form a secret key, derives the public key, and returns the two as a keypair.

The *_seed_keypair functions are ideal for generating a keypair from a password and salt. Use the result as a seed to generate the desired keys.

Keypair (secret key and public key)