ネットワークセキュリティにおける PHP 暗号化テクノロジの重要性と役割

<?php
function encrypt($data, $key) {
    $encrypted = openssl_encrypt($data, 'AES-128-ECB', $key, OPENSSL_RAW_DATA);
    return base64_encode($encrypted);
}

function decrypt($data, $key) {
    $decrypted = openssl_decrypt(base64_decode($data), 'AES-128-ECB', $key, OPENSSL_RAW_DATA);
    return $decrypted;
}

$data = "Hello World";
$key = "SecretKey";
$encryptedData = encrypt($data, $key);
$decryptedData = decrypt($encryptedData, $key);
echo "加密后的数据：" . $encryptedData . "
";
echo "解密后的数据：" . $decryptedData . "
";
?>

<?php
function encrypt($data, $publicKeyFile) {
    $publicKey = openssl_pkey_get_public(file_get_contents($publicKeyFile));
    openssl_public_encrypt($data, $encrypted, $publicKey);
    return base64_encode($encrypted);
}

function decrypt($data, $privateKeyFile) {
    $privateKey = openssl_pkey_get_private(file_get_contents($privateKeyFile));
    openssl_private_decrypt(base64_decode($data), $decrypted, $privateKey);
    return $decrypted;
}

$data = "Hello World";
$publicKeyFile = "public.pem";
$privateKeyFile = "private.pem";
$encryptedData = encrypt($data, $publicKeyFile);
$decryptedData = decrypt($encryptedData, $privateKeyFile);
echo "加密后的数据：" . $encryptedData . "
";
echo "解密后的数据：" . $decryptedData . "
";
?>

server {
    listen 443 ssl;
    server_name example.com;
    ssl_certificate /path/to/certificate.pem;
    ssl_certificate_key /path/to/privatekey.pem;
    
    location / {
        root /path/to/public_html;
        index index.php;
        
        location ~ .php$ {
            include fastcgi_params;
            fastcgi_param HTTPS on;
            fastcgi_pass unix:/var/run/php-fpm.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        }
    }
}