# 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

### 说明

sodium_crypto_sign_publickey_from_secretkey(#[\SensitiveParameter] string `$secret_key`): string

Extract the Ed25519 public key from the secret key

### 参数

`secret_key`

  Ed25519 secret key

### 返回值

Ed25519 public key

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