International PHP Conference 2019 - Spring Edition

sodium_crypto_sign_detached

(PHP 7 >= 7.2.0)

sodium_crypto_sign_detachedSign the message

说明

string sodium_crypto_sign_detached ( string $msg , string $keypair )

Warning

本函数还未编写文档,仅有参数列表。

参数

msg

keypair

返回值

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craig at craigfrancis dot co dot uk
1 month ago
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.');
}

?>
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