我有一个Magtek uDynamo并且我正在尝试解密音轨1.我已经阅读了下面的内容并了解了一点，但不知道如何实际解密数据。该供应商表示要使用ANSI测试密钥进行解密，但我找不到任何相关内容。我有KSN，会话和序列号。我也尝试了一些我发现的Java代码，但似乎没有用。它返回null或者我可能输错了BDK。我只是使用我在某处阅读的序列号。我在Android上这样做。我希望代码能够在服务器上运行，而不是在设备上运行，因此它会与HTTPS一起加密。
How ciphertext was generated in card reader using DUKPT encryption?
3DES-DUKPT (CBC) decryption confirmation
https://github.com/yinheli/dukpt/blob/master/src/main/java/com/yinheli/tool/DukptDecrypt.java
更新 我希望按照ANSI X9.24第1部分标准解密3DES DUKPT
我正在使用此https://github.com/camcima/dukpt-php/tree/e8fceb4df8757e7e097c435221b4e93e097d3c9f
我必须更新文件，并确保我获得了最新的phpseclib并且它运行但是数据出现像C A fr （Wb f7zn：W9，F7，M = zCRW
我一定错过了什么。我尝试过不同的模式，我正在尝试寻找编码。如果您有解决方案或想法，请告诉我。他们的测试数据确实有用，所以我不确定我和他们的测试数据有什么区别
代码我在root中运行index.php：
include 'vendor/autoload.php';
use DUKPT\DerivedKey;
use DUKPT\KeySerialNumber;
use DUKPT\Utility;
$encryptedHexData = 'de8bfe769dca885cf3cc312135fe2cccfacf176235f4bdee773d1865334315ed2aefcab613f1884b5d63051703d5a0e2bd5d1988eeabe641bd5d1988eeabe641';
$ksn = '00000232100117e00027';
$bdk = '0123456789ABCDEFFEDCBA9876543210';
$key = new KeySerialNumber($ksn);
$encryptionKey = DerivedKey::calculateDataEncryptionRequestKey($key, $bdk);
$actual = Utility::hex2bin(Utility::removePadding(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true)));
echo $encryptionKey.'<br />';
echo $actual.'<br /><br />';
答案 0 :(得分：1)
使用正确的BDK和KSN，您现在需要做的就是尝试不同的模式。
目前您正在使用include 'vendor/autoload.php';
use DUKPT\DerivedKey;
use DUKPT\KeySerialNumber;
use DUKPT\Utility;
$encryptedHexData = 'C25C1D1197D31CAA87285D59A892047426D9182EC11353C051ADD6D0F072A6CB3436560B3071FC1FD11D9F7E74886742D9BEE0CFD1EA1064C213BB55278B2F12';
$ksn = 'FFFF9876543210E00008';
$bdk = '0123456789ABCDEFFEDCBA9876543210';
$key = new KeySerialNumber($ksn);
$encryptionKey = DerivedKey::calculatePinEncryptionKey($key, $bdk);
$decryptedOutput = Utility::hex2bin(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true));
echo '<br /><br />Pin Encryption Key: '.$encryptionKey;
echo '<br />Decrypted Output: '.$decryptedOutput;
$encryptionKey = DerivedKey::calculateMacRequestKey($key, $bdk);
$decryptedOutput = Utility::hex2bin(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true));
echo '<br /><br />Mac Request Key: '.$encryptionKey;
echo '<br />Decrypted Output: '.$decryptedOutput;
$encryptionKey = DerivedKey::calculateMacResponseKey($key, $bdk);
$decryptedOutput = Utility::hex2bin(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true));
echo '<br /><br />Mac Response Key: '.$encryptionKey;
echo '<br />Decrypted Output: '.$decryptedOutput;
$encryptionKey = DerivedKey::calculateDataEncryptionRequestKey($key, $bdk);
$decryptedOutput = Utility::hex2bin(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true));
echo '<br /><br />Data Encryption Request Key: '.$encryptionKey;
echo '<br />Decrypted Output: '.$decryptedOutput;
$encryptionKey = DerivedKey::calculateDataEncryptionResponseKey($key, $bdk);
$decryptedOutput = Utility::hex2bin(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true));
echo '<br /><br />Data Encryption Response Key: '.$encryptionKey;
echo '<br />Decrypted Output: '.$decryptedOutput;
您需要尝试其他模式以确定您的设备正在使用哪种模式。这是我用来为我的设备找到正确结果的代码。
Pin Encryption Key: 27F66D5244FF621EAA6F6120EDEB427F
Decrypted Output: %B5452300551227189^HOGAN/PAUL ^08043210000000725000000?
Mac Request Key: 27F66D5244FF9DE1AA6F6120EDEBBD80
Decrypted Output: W����U�P�TfB/`����þ&��f��3y;�U�Zy��UK�[��s�;�>�[�b
Mac Response Key: 27F66D52BBFF62E1AA6F612012EB4280
Decrypted Output: b�K2a�S0��9�Mb-����*L�J���� ��s�\���H�����=���e�]�,���Hwq�
Data Encryption Request Key: C39B2778B058AC376FB18DC906F75CBA
Decrypted Output: RA]�ԅⱰQ���'v}b��h��St�����?� lu/�ٵ�P��!���6�� �
Data Encryption Response Key: 846E267CB822197406DA2B161191C6E4
Decrypted Output: ��,�B^FZ�� ςs�c���*E�4��0��ǂ}����6`-P�b�ʞ̳aصĬ�&���+��
因此，对于此BDK和KSN，以下是结果输出。
(dt1=name,phone_number)