Decryption

All the API responses are encrypted using the AES/CBC/PKCS5PADDING mechanism. The response received from the API needs to be decrypted using the provided encryption key.

Meaning of decryption key

A decryption key is used to reverse the encryption process and transform scrambled data back into its original, readable form. In cases where the same key is used for both encryption and decryption, this method is called symmetric encryption.We use the same key for both encryption and decryption in symmetric encryption.

Implementation Steps:

 Step 1: Obtain the Encrypted Data

 Retrieve the encrypted data (ciphertext) from the API response.</p>

 Step 2: Decrypt the Data

 Decrypt the obtained ciphertext using the specified encryption algorithm and the same key that was used for encryption.

Request Body

Parameter	Type Value	Description	Value Like
response required	String	The encrypted response string is received in the API.	d96cc495EkT0yuZWFQvoTksxPVbkIyB
encryptionkey required	String (10-200)	The encryption key provided by airpay is used to decrypt all request payloads with the AES/CBC/PKCS5PADDING encryption mechanism.	a197b462cb0350a093f34996f698dc94

Success 200

Parameter	Type Value	Description	Value Like
status_code required	String	The status code signifies the API request’s success or failure.	200
response_code required	String	The response code shows whether the API request was successful or not.	00
status required	String	The status indicates the API response’s success or failure.	success
message required	String	The message gives further information about the API response or error.	Success
data required	Object	The data contains the actual content or information returned by the API response.	{"merchant_id":"123356","ap_transactionid":"11314"}

PHP

<?php
  $response = "d96cc495EkT0yuZWFQvoTksxPVbkIyB";
  $encryptionkey = 'a197b462cb0350a093f34996f698dc94';
  $encdata = decrypt($response,$encryptionkey);

  function decrypt($response,$encryptionkey)
  {
      $iv = substr($response, 0, 16);
      $encryptedData = substr($response, 16);
      $decryptedData = openssl_decrypt(base64_decode($encryptedData), 'AES-256-CBC', $encryptionkey, OPENSSL_RAW_DATA, $iv);
      return json_decode($decryptedData);
  }

Success Response

{
 "status_code": "200",
 "response_code": "00",
 "status": "success",
 "message": "Success",
 "data": {
   // API response data
 }
}

Error Response

{
    "status_code": "200",
    "response_code": "1234",
    "status": "fail",
    "message": "Invalid domain",
    "data": {}
}