- base64_encode: documentation ( source)
- utf8_encode: documentation ( source)
- md5: documentation ( source)
<?php
$tempToken = "cecf180d-800e-43ee-82b5-2b22db814d9098b3bf2a-b5bd-4800-ac75-3e29d72b6155";
$clearText = "AuthToken=cecf180d-800e-43ee-82b5-2b22db814d9098b3bf2a-b5bd-4800-ac75-3e29d72b6155&PayerId=9979571404994689&PaymentProcessType=CreditCard&ProcessMethod=None&PaymentMethodStorageOption=None&ReturnURL=https://il01addproc.propay.com:443/Return.aspx";
$tempToken = "1f25d31c-e8fe-4d68-be73-f7b439bfa0a329e90de6-4e93-4374-8633-22cef77467f5";
$clearText = "AuthToken=1f25d31c-e8fe-4d68-be73-f7b439bfa0a329e90de6-4e93-4374-8633-22cef77467f5&PayerID=2833955147881261&Amount=10.00&CurrencyCode=USD&ProcessMethod=Capture&PaymentMethodStorageOption=None&InvoiceNumber=Invoice123&Comment1=comment1&Comment2=comment2&echo=echotest&ReturnURL=https://il01addproc.propay.com:443/Return.aspx&ProfileId=3351&PaymentProcessType=CreditCard&StandardEntryClassCode=&DisplayMessage=True&Protected=False";
// Encode the TempToken string in UTF-8
$encodedTempToken = utf8_encode($tempToken);
// Get the MD5 hash of $encodedTempToken in raw binary format with a length of 16
$md5Hash = md5($encodedTempToken, TRUE);
// Encode the name value string in UTF-8
$encodedNameValueString = utf8_encode($clearText);
// Pad the name value string using pkcs5_pad
// $blocksize = mcrypt_get_block_size('rijndael_128', 'cbc');
// $pad = $blocksize - (strlen($encodedNameValueString) % $blocksize);
// $encodedNameValueString = $encodedNameValueString . str_repeat(chr($pad), $pad);
echo $encodedNameValueString;
echo "\n";
// Use AES-128 encryption to encrypt the name value string with the key and IV both being equal to the MD5 hash of $encodedTempToken
$aes128 = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $md5Hash, $encodedNameValueString, MCRYPT_MODE_CBC, $md5Hash);
// Use Base64 encoding to send the resulting bytes of the encrypted name value string
$settingsCipher = base64_encode($aes128);
echo $settingsCipher;