Sign the message

# sodium_crypto_sign_detached

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_sign_detached — Sign the message

### Description

sodium_crypto_sign_detached(string `$message`, #[\SensitiveParameter] string `$secret_key`): string

Sign a message with a secret key, that can be verified by the corresponding public key. This function returns a detached signature.

### Parameters

`message`
  Message to sign.
`secret_key`
  Secret key. See sodium_crypto_sign_secretkey()

### Return Values

Cryptographic signature.

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