sodium_crypto_box_seed_keypair

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_box_seed_keypair — Deterministically derive the key pair from a single key

sodium_crypto_box_seed_keypair(#[\SensitiveParameter] string $seed): string

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.

X25519 Keypair (secret key and public key).

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