Viewing file:  EncdecPaytm.php (5.12 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?php
namespace Modules\Paytm\Library;
use Illuminate\Support\Str;
class EncdecPaytm
{
/**
* Encrypt a string
*
* @param String $input
* @param String $ky
* @return string data
*/
public static function encrypt_e($input, $ky)
{
$key = html_entity_decode($ky);
$iv = "@@@@&&&&####$$$$";
return openssl_encrypt($input, "AES-128-CBC", $key, 0, $iv);
}
/**
* Decrypt a String
*
* @param [type] $crypt
* @param [type] $ky
* @return String
*/
public static function decrypt_e($crypt, $ky)
{
$key = html_entity_decode($ky);
$iv = "@@@@&&&&####$$$$";
return openssl_decrypt($crypt, "AES-128-CBC", $key, 0, $iv);
}
/**
* Generate a random string
*
* @param Int $length
* @return String
*/
public static function generateSalt_e($length)
{
return Str::random($length);
}
/**
* Get check sum from array
*
* @param array $arrayList
* @param string $key
* @param integer $sort
* @return response
*/
public static function getChecksumFromArray($arrayList, $key, $sort = 1)
{
if ($sort != 0) {
ksort($arrayList);
}
$str = self::getArray2Str($arrayList);
$salt = self::generateSalt_e(4);
$finalString = implode('|', [$str, $salt]);
$hash = hash("sha256", $finalString);
$hashString = $hash . $salt;
return self::encrypt_e($hashString, $key);
}
/**
* Get check sum from string
*
* @param string $str
* @param string $key
* @return response
*/
public static function getChecksumFromString($str, $key)
{
$salt = self::generateSalt_e(4);
$finalString = implode('|', [$str, $salt]);
$hash = hash("sha256", $finalString);
$hashString = $hash . $salt;
return self::encrypt_e($hashString, $key);
}
/**
* Verify check sum
*
* @param array $arrayList
* @param string $key
* @param string $checksum_value
* @return boolean true|false
*/
public static function verifychecksum_e($arrayList, $key, $checksum_value)
{
$arrayList = self::removeCheckSumParam($arrayList);
ksort($arrayList);
$str = self::getArray2Str($arrayList);
$paytm_hash = self::decrypt_e($checksum_value, $key);
$salt = substr($paytm_hash, -4);
$finalString = implode('|', [$str, $salt]);
$website_hash = hash("sha256", $finalString);
$website_hash .= $salt;
return ($website_hash == $paytm_hash) ? true : false;
}
/**
* Create array to string.
*
* @param array $array_list
* @return string
*/
public static function getArray2Str($array_list)
{
return implode('|', $array_list);
}
/**
* Remove array CHECKSUMHASH key value
*
* @param Array $array_list
* @return Array
*/
public static function removeCheckSumParam($array_list)
{
if (isset($array_list["CHECKSUMHASH"])) {
unset($array_list["CHECKSUMHASH"]);
}
return $array_list;
}
/**
* Check transaction status
*
* @param mix $request_paramList
* @param url $paytm_status_query_new_url
* @return response
*/
public static function getTxnStatusNew($request_paramList, $paytm_status_query_new_url)
{
return self::callNewAPI($paytm_status_query_new_url, $request_paramList);
}
/**
* Initial request for refund
*
* @param mix|array $request_paramList
* @param url $paytm_refund_url
* @return response
*/
public static function initiateTxnRefund($request_paramList, $paytm_merchant_key, $paytm_refund_url)
{
$CHECKSUM = self::getChecksumFromArray($request_paramList, $paytm_merchant_key, 0);
$request_paramList["CHECKSUM"] = $CHECKSUM;
return self::callNewAPI($paytm_refund_url, $request_paramList);
}
/**
* Call a api
*
* @param url $apiURL
* @param mix|array $requestParamList
* @return response
*/
public static function callNewAPI($apiURL, $requestParamList)
{
$jsonResponse = "";
$JsonData = json_encode($requestParamList);
$postData = 'JsonData=' . urlencode($JsonData);
$ch = curl_init($apiURL);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt(
$ch,
CURLOPT_HTTPHEADER,
array(
'Content-Type: application/json',
'Content-Length: ' . strlen($postData)
)
);
$jsonResponse = curl_exec($ch);
return json_decode($jsonResponse, true);
}
}
|