sodium_crypto_box_seal()

(PHP 7 >= 7.2.0)

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

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";
?>