PHP에서 신뢰할 수 있는 컴퓨팅과 암호화를 수행하는 방법은 무엇입니까?

//生成RSA公钥和私钥
$res = openssl_pkey_new(array('private_key_bits' => 1024, 'private_key_type' => OPENSSL_KEYTYPE_RSA));

//获取私钥
openssl_pkey_export($res, $private_key);

//获取公钥
$public_key = openssl_pkey_get_details($res);
$public_key = $public_key['key'];

//将需要签名的数据使用私钥进行加密生成数字签名
openssl_sign($data, $signature, $private_key, 'sha1WithRSAEncryption');

//将数字签名和数据一起发送给对方
$encrypted_data = base64_encode($signature . '|' . $data);

//将接收到的数据解密得到数字签名和数据
$decrypted_data = base64_decode($received_data);
$signature = substr($decrypted_data, 0, strpos($decrypted_data, '|'));
$data = substr($decrypted_data, strpos($decrypted_data, '|') + 1);

//验证数字签名
$verify = openssl_verify($data, $signature, $public_key, 'sha1WithRSAEncryption');

if ($verify == 1) {
    //数字签名验证通过，数据来源和完整性得到保证
} else {
    //数字签名验证未通过，数据可能已被篡改
}

//生成密钥
$key = 'this is a secret key';

//计算消息认证码
$mac = hash_hmac('sha1', $data, $key);

//将数据和消息认证码一起发送给对方
$encrypted_data = base64_encode($mac . '|' . $data);

//将接收到的数据解密得到消息认证码和数据
$decrypted_data = base64_decode($received_data);
$mac = substr($decrypted_data, 0, strpos($decrypted_data, '|'));
$data = substr($decrypted_data, strpos($decrypted_data, '|') + 1);

//计算消息认证码
$verify_mac = hash_hmac('sha1', $data, $key);

if ($mac == $verify_mac) {
    //消息认证码验证通过，数据完整性得到保证
} else {
    //消息认证码验证未通过，数据可能已被篡改
}

//生成AES密钥
$key = 'this is a secret key';

//加密数据
$encrypted_data = openssl_encrypt($data, 'AES-128-CBC', $key, OPENSSL_RAW_DATA, $iv);
$encrypted_data = base64_encode($iv . '|' . $encrypted_data);

//解密数据
$decrypted_data = base64_decode($encrypted_data);
$iv = substr($decrypted_data, 0, 16);
$encrypted_data = substr($decrypted_data, 16);

$decrypted_data = openssl_decrypt($encrypted_data, 'AES-128-CBC', $key, OPENSSL_RAW_DATA, $iv);

//生成RSA公钥和私钥
$res = openssl_pkey_new(array('private_key_bits' => 1024, 'private_key_type' => OPENSSL_KEYTYPE_RSA));

//获取私钥
openssl_pkey_export($res, $private_key);

//获取公钥
$public_key = openssl_pkey_get_details($res);
$public_key = $public_key['key'];

//加密数据
openssl_public_encrypt($data, $encrypted_data, $public_key);

//解密数据
openssl_private_decrypt($encrypted_data, $decrypted_data, $private_key);