sodium_crypto_box_seal

(PHP 7 >= 7.2.0)

sodium_crypto_box_seal — Encrypt a message

说明

sodium_crypto_box_seal ( string $msg , string $key ) : string

Warning

本函数还未编写文档，仅有参数列表。

参数

msg
key

返回值

User Contributed Notes

craig at craigfrancis dot co dot uk 23-Jan-2018 01:36


Here's a quick example on how to use sodium_crypto_box_seal(); where you have 2 people exchanging a $message - person 1 encrypts it so that only person 2 can decrypt it. It does not allow person 2 to know who sent it, as only their public key way used (see sodium_crypto_box to do that).



<?php



$keypair = sodium_crypto_box_keypair();

$keypair_public = sodium_crypto_box_publickey($keypair);

$keypair_secret = sodium_crypto_box_secretkey($keypair);



// $key_public = sodium_crypto_box_publickey_from_secretkey($keypair_secret);

// $keypair = sodium_crypto_box_keypair_from_secretkey_and_publickey($keypair_secret, $key_public);



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

// Person 1, encrypting



$message = 'hello';



$encrypted = sodium_crypto_box_seal($message, $keypair_public);



echo base64_encode($encrypted) . "\n";



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

// Person 2, decrypting



$decrypted = sodium_crypto_box_seal_open($encrypted, $keypair);



echo $decrypted . "\n";



?>