Sodium Functions
PHP Manual

sodium_crypto_sign

Sign a message

Description

string sodium_crypto_sign(string $message, #[\SensitiveParameter]string $secret_key)

Sign a message with a secret key, that can be verified by the corresponding public key. This function attaches the signature to the message. See sodium_crypto_sign_detached for detached signatures.

Parameters

message

Message to sign.

secret_key

Secret key. See sodium_crypto_sign_secretkey

Return Values

Signed message (not encrypted).