用PHP重写Rijndael 256 C#加密代码

<?php
function encrypt($data, $key, $iv) {
    $cipher = "aes-256-cbc";
    $encrypted = openssl_encrypt($data, $cipher, $key, OPENSSL_RAW_DATA, $iv);
    return base64_encode($encrypted);
}

function decrypt($encryptedData, $key, $iv) {
    $cipher = "aes-256-cbc";
    $decrypted = openssl_decrypt(base64_decode($encryptedData), $cipher, $key, OPENSSL_RAW_DATA, $iv);
    return $decrypted;
}

$data = "Hello, World!";
$key = "0123456789abcdef0123456789abcdef";
$iv = "abcdef9876543210abcdef9876543210";

$encryptedData = encrypt($data, $key, $iv);
echo "Encrypted Data: " . $encryptedData . "\n";

$decryptedData = decrypt($encryptedData, $key, $iv);
echo "Decrypted Data: " . $decryptedData . "\n";
?>