sodium_crypto_sign_detached

(PHP 7 >= 7.2.0)

sodium_crypto_sign_detached — Sign the message

说明

sodium_crypto_sign_detached ( string $msg , string $secretkey ) : string

Warning

本函数还未编写文档，仅有参数列表。

参数

msg
secretkey

返回值

User Contributed Notes

craig at craigfrancis dot co dot uk 25-Aug-2018 07:33


Here's a quick example on how to use sodium_crypto_sign_detached(); where you have a message that you want to sign, so anyone with the public key can confirm that the message hasn't been tampered with.



This is similar to sodium_crypto_sign(), but the returned string does not contain the original message, it is just a signature.



<?php



// $sign_seed = random_bytes(SODIUM_CRYPTO_SIGN_SEEDBYTES);

// $sign_pair = sodium_crypto_sign_seed_keypair($sign_seed);



$sign_pair = sodium_crypto_sign_keypair();

$sign_secret = sodium_crypto_sign_secretkey($sign_pair);

$sign_public = sodium_crypto_sign_publickey($sign_pair);



//--------------------------------------------------

// Person 1, signing



$message = 'Hello';



$signature = sodium_crypto_sign_detached($message, $sign_secret);



//--------------------------------------------------

// Person 2, verifying



$message_valid = sodium_crypto_sign_verify_detached($signature, $message, $sign_public);



if (!$message_valid) {

    exit('Message has been changed.');

}



?>