# sodium_crypto_sign_publickey_from_secretkey

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_sign_publickey_from_secretkey — Extract the Ed25519 public key from the secret key

### Descripción

sodium_crypto_sign_publickey_from_secretkey(string `$secret_key`): string

Extract the Ed25519 public key from the secret key

### Parámetros

`secret_key`

  Ed25519 secret key

### Valores devueltos

Ed25519 public key