PHP开发缓存的数据加密与安全传输

<?php
function encrypt($data, $key) {
    $iv_size = openssl_cipher_iv_length('AES-128-CBC');
    $iv = openssl_random_pseudo_bytes($iv_size);
    $encrypted = openssl_encrypt($data, 'AES-128-CBC', $key, OPENSSL_RAW_DATA, $iv);
    return base64_encode($iv . $encrypted);
}

function decrypt($data, $key) {
    $data = base64_decode($data);
    $iv_size = openssl_cipher_iv_length('AES-128-CBC');
    $iv = substr($data, 0, $iv_size);
    $encrypted = substr($data, $iv_size);
    return openssl_decrypt($encrypted, 'AES-128-CBC', $key, OPENSSL_RAW_DATA, $iv);
}

$key = 'your_secret_key';
$data = 'Hello, World!';
$encrypted_data = encrypt($data, $key);
$decrypted_data = decrypt($encrypted_data, $key);

echo "明文数据：$data
";
echo "加密后数据：$encrypted_data
";
echo "解密后数据：$decrypted_data
";
?>

<?php
// 在Apache服务器中启用HTTPS
if ($_SERVER['HTTPS'] != 'on') {
    $redirect = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    header('Location: ' . $redirect);
    exit();
}
?>