Question

我有一些C＃代码用于加密文本，并且使PHP与之等效。 C＃方法返回的字符串是 1560 个字节，但是我的PHP方法返回了 2648 个字节，尽管我对AES-使用相同的加密标准，但我不知道为什么256位作为C＃App，它们是：

块模式：CBC填充：PKCS7块大小：16字节加密密钥大小：32个字节初始化向量大小：16个字节

C＃代码：

public string AES256Encrypt(string toEncrypt, out string key)
{
try
            {
                AesManaged AESManaged = new AesManaged();

                byte[] AESKey = AESManaged.Key;
                byte[] AESIV = AESManaged.IV;
                byte[] encryptedData = null;

                ICryptoTransform cryptoTransform = AESManaged.CreateEncryptor(AESKey, AESIV);

                using (MemoryStream memoryStream = new MemoryStream())
                {
                    using (CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write))
                    {
                        using (StreamWriter streamWriter = new StreamWriter(cryptoStream))
                        {
                            streamWriter.Write(toEncrypt);
                        }

                        encryptedData = memoryStream.ToArray();
                    }
                }

                byte[] keyBytes = new byte[AESKey.Length + AESIV.Length];

                Array.Copy(AESKey, 0, keyBytes, 0, AESKey.Length);
                Array.Copy(AESIV, 0, keyBytes, AESKey.Length, AESIV.Length);

                key = Convert.ToBase64String(keyBytes);

                return Convert.ToBase64String(encryptedData);

            }
            catch (Exception ex)
            {
                key = null;
                return null;
            }
}

我的PHP代码是：

public function AESencrypt($plaintext, &$macKey)
{
    $key = random_bytes(32);
    //$key = bin2hex(openssl_random_pseudo_bytes(32));
    $keyArr = unpack('C*', $key);
    $iv = random_bytes(16);
    //$iv = bin2hex(openssl_random_pseudo_bytes(16)) ;
    $ivArr = unpack('C*', $iv);
    $encryptedData = openssl_encrypt(
        $plaintext,
        'AES-256-CBC',
        $key,
        OPENSSL_RAW_DATA,
        $iv
    );
    //        while ($encryptedData = openssl_error_string())
    //            echo $encryptedData . "<br />\n";exit;
    $keyBytes = array();
    //clone the $keyArr to the keyBytes Array
    foreach ($keyArr as $key => $item) {
        $keyBytes[$key] = $item;
    }
    //clone the $ivArr to the keyBytes Array from index 32 to 48
    foreach ($ivArr as $key => $item) {
        $keyBytes[$key+32] = $item;
    }
    $string = implode(array_map("chr", $keyBytes));
    $returned = 
        array(
        'encrypted' => base64_encode($encryptedData),
        'randomSecret' => base64_encode($string),
    );
    //print '<pre>'; print_r($returned);exit;
    return $returned;
}

这是传递给两个应用程序进行加密的对象

<?xml version="1.0" encoding="utf-16"?>
<PaymentRequestInitiationReq 
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <Sender>
        <Id>029</Id>
        <Name>Biller</Name>
        <RandomValue>54b86c4e2df948659b186571a924e516</RandomValue>
        <Password>XG94dze10PfZXrfJ7pDnuyR8MBi2SBQq24r6NLjAN0kz3Ay/OoOahqrfHI0n0azg+GkIqvEdK0ddgKip6AAd5TN14MmGL0hgc99/2JFkSrEL8brylG8MxiZIqTKoEb7hOV84V+tHcolbUNux0o1OOGrD4lgrh3BMV/hddwlwb97sXguadOPEdVVCLCEN3qyo15vGtmgTR1dcaWj1Pj3KIEeQvJifA4FjTSqFLEwLDHMnKZEjjkjDmNGc7pYsWxYP8dm6FAiUbYB+G8PsiFhiHsYxNygsYB/dTn2dY7vgV4iBUD9EnNkbb6dUFIZJ0hCYllKWhONWxKwJ4oK3MGlR3g==</Password>
    </Sender>
    <SettlementAmounts>
        <SettlementAmounts>
            <SettlementAccountCode>1073</SettlementAccountCode>
            <SettlementAmountsDescription />
            <Amount>25</Amount>
        </SettlementAmounts>
    </SettlementAmounts>
    <SenderRequestNumber>01a19e11f5bf4349</SenderRequestNumber>
    <SenderInvoiceNumber />
    <ServiceCode>140</ServiceCode>
    <RequestInitiationDescription />
    <Currency>818</Currency>
    <IP>::1</IP>
    <PaymentMechanism>
        <Type>NotSet</Type>
        <MechanismType>NotSet</MechanismType>
        <Channel />
    </PaymentMechanism>
    <ExpiryDate>2019-07-17</ExpiryDate>
    <PaymentConfirmationUrl>http://127.0.0.1/agri360/index.php?route=checkout/success</PaymentConfirmationUrl>
    <PaymentConfirmationRedirectUrl>http://127.0.0.1/agri360/index.php?route=checkout/success</PaymentConfirmationRedirectUrl>
    <UserUniqueIdentifier>1234456778</UserUniqueIdentifier>
</PaymentRequestInitiationReq>

请有人能帮助我，告诉我为什么会发生这种情况吗？

Answer 1

最后，我已经解决了。 C＃处理的XML对象字符串与PHP不同，因此我将PHP端的字符串放在一行上，“加密对象”的长度也变为相同。

php openssl_encrypt返回2648个字节

1 个答案: