sodium_crypto_secretbox

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_secretbox — Authenticated shared-key encryption

说明

sodium_crypto_secretbox ( string $message , string $nonce , string $key ) : string

Encrypt a message with a symmetric (shared) key.

参数

message: The plaintext message to encrypt.
nonce: A number that must be only used once, per message. 24 bytes long. This is a large enough bound to generate randomly (i.e. random_bytes()).
key: Encryption key (256-bit).

返回值

User Contributed Notes

celso fontes 08-Jul-2020 02:20


An example to how encrypt or decrypt using sodium:



<?php



$key = random_bytes(SODIUM_CRYPTO_SECRETBOX_KEYBYTES);



$nonce = random_bytes(SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);

$ciphertext = sodium_crypto_secretbox("Hello World !", $nonce, $key);



$plaintext = sodium_crypto_secretbox_open($ciphertext, $nonce, $key);

if ($plaintext === false) {

    throw new Exception("Bad ciphertext");

}



echo $plaintext;