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? ??? ?? PHP ???? Libsodium ?? defuse/php-encryption? ???? PHP ???? ???? ????? ???? ??? ??????

Libsodium ?? defuse/php-encryption? ???? PHP ???? ???? ????? ???? ??? ??????

Dec 18, 2024 am 12:26 AM

How to Securely Encrypt and Decrypt PHP Strings Using Libsodium or defuse/php-encryption?

PHP ??? ??? ? ???

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PHP ???? ??? ????? ???? ? ????? ?? ???? ? ?? ?? ?? ?? ?? ?? ?????. ?????

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???? ?? ???? ??? ???? ???? ?? ?????. ??? ??? ?? ??? ? ???? ???? ??? ?????.

?? ???? ???? ???. ?? ??? ???? ??? ??? ? ?? ?????? ?????. ???? ?? ??? ??? ??? ???? ???? libsodium ?? defuse/php-encryption? ???? ?? ????.

??? ??:

  1. AES? ?????. ???? ?? CTR ????
  2. ??? ???? ???? ?????. HMAC-SHA-256(?? Poly1305).

??? ??:

  1. ???? MAC? ?? ???? ?? MAC? ?????. . ???? ??? ?????.
  2. ???? ?????.

?? ?? ??:

  1. ?? ??? ??? ????.
  2. mb_strlen()? ???? mb_substr()? '8??' ?? ?? ??? ?????.
  3. CSPRNG? ???? IV? ?????. MCRYPT_RAND? ????.
  4. ???? ?? ?? ??????(AEAD? ???? ?? ?).
  5. ?? ??? ???? ?????.

???? ???? ??? ? ??:

  • ???? ???(?? Argon2? ?? ???? ?? ???? ??)
  • URL ???? ???(???? ??)

Libsodium PHP ?:

function safeEncrypt(string $message, string $key): string
{
    if (mb_strlen($key, '8bit') !== SODIUM_CRYPTO_SECRETBOX_KEYBYTES) {
        throw new RangeException('Key is not the correct size (must be 32 bytes).');
    }
    $nonce = random_bytes(SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
    $cipher = base64_encode(
        $nonce.
        sodium_crypto_secretbox(
            $message,
            $nonce,
            $key
        )
    );
    return $cipher;
}

??? ??:

function safeDecrypt(string $encrypted, string $key): string
{
    $decoded = base64_decode($encrypted);
    $nonce = mb_substr($decoded, 0, SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, '8bit');
    $ciphertext = mb_substr($decoded, SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, null, '8bit');
    $plain = sodium_crypto_secretbox_open(
        $ciphertext,
        $nonce,
        $key
    );
    return $plain;
}

defuse/php-encryption ?:

use Defuse\Crypto\Crypto;
use Defuse\Crypto\Key;

$message = 'We are all living in a yellow submarine';
$key = Key::createNewRandomKey();
$ciphertext = Crypto::encrypt($message, $key);
$plaintext = Crypto::decrypt($ciphertext, $key);

? ??? Libsodium ?? defuse/php-encryption? ???? PHP ???? ???? ????? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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