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

Returns the encrypted string.

错误／异常

If nonce has a length of bytes different than SODIUM_CRYPTO_SECRETBOX_NONCEBYTES (24 bytes), a SodiumException will be thrown.
If key has a length of bytes different than SODIUM_CRYPTO_SECRETBOX_KEYBYTES (32 bytes), a SodiumException will be thrown.
Throws a SodiumException on failure.

范例

示例 #1 sodium_crypto_secretbox() example


<?php
// The $key must be kept confidential
$key = sodium_crypto_secretbox_keygen();
// Do not reuse $nonce with the same key
$nonce = random_bytes(SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
$plaintext = "message to be encrypted";
$ciphertext = sodium_crypto_secretbox($plaintext, $nonce, $key);

var_dump(bin2hex($ciphertext));
// The same nouce and key are required to decrypt the $ciphertext
var_dump(sodium_crypto_secretbox_open($ciphertext, $nonce, $key));
?>

以上例程的输出类似于：

string(78) "3a1fa3e9f7b72ef8be51d40abf8e296c6899c185d07b18b4c93e7f26aa776d24c50852cd6b1076"
string(23) "message to be encrypted"

参见

sodium_crypto_secretbox_open() - Authenticated shared-key decryption
sodium_crypto_secretbox_keygen() - Generate random key for sodium_crypto_secretbox
random_bytes() - Generates cryptographically secure pseudo-random bytes

add a note

User Contributed Notes 1 note

down

celso fontes ¶

1 year ago


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;

add a note

官方地址：https://www.php.net/manual/en/function.sodium-crypto-secretbox.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet ADORecordSet对象 adodb手册 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 opcache预加载 Composer的Packagist资源 mysql面试题 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 PHP7添加redis扩展 adodb连接mysql多个数据库的问题 PHP获取指定函数定义在哪个文件中及行号 PHP mkdir()写出来的权限与mode值不符合 PHP-FPM进程数的设定利用PHP SOAP实现WEB SERVICE

略微加速

PHP官方手册 - 互联网笔记

sodium_crypto_secretbox

说明

参数

返回值

错误／异常

范例

参见

User Contributed Notes 1 note