PayOn Integration Documents
  • 1. Summary
  • 2. Online Card Payment
    • Initiation
    • 2.1 Online Card Payment Authorization Process
    • 2.2 Online Card Payment Cancellation Process
  • 3. PayOn Web Payment
    • Initiation
    • History
    • Contents
    • 1. Summary
    • 2. Procedure
    • 3. Message specification
  • 4. Payon PayGo TOPUP
    • Initial
    • History
    • Content
    • 1. Overview
    • 2. Online transaction processing interworking
    • 3. Message specification
  • payon ppcbank topup
    • Initial
    • History
    • Content
    • 1. Overview
    • 2. Online transaction processing server interworking
    • 3. Message specification
  • message cryptography
    • Initial
    • Encryption Library API Secification
  • khqr code
    • Initial
    • Content
    • 1. Introduction
    • 2. Overview of EMV QR Code Specification for payment system (EMV QRCPS)
    • 3. Common use cases
    • 4. QR code payload data objects
    • 5. How to use PayOn khqr library
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  1. message cryptography

Encryption Library API Secification

@Payon development group

4.1.1 Data

Function

Explanation

function createSession($termId, $txnId)

Encrypted session creation between client and server

  1. Input Param

    1.1 termId: Terminal ID given by PayOn

    1.2 txnId: Merchant transaction identification number

  2. Return: none

function PayOnEncrypt($data)

Data encryption

  1. Input Param

    1.1 data: Data to be encrypted

  2. Return: Encrypted data

function PayOnDecrypt($data)

Data decryption

  1. Input Param

    1.1 data: Data to be decrypted

  2. Return: Decrypted data

function PayOnGenerateMAC($data)

Generate MAC value for message verification

  1. Input Param

    1.1 data: MAC Data for generation

  2. return: MAC value for message verification.

Function

Explanation

String getVersion()

Library version lookup

  1. Input Param: none

  2. Return: Library

void createSession(termId, txnId)

Encrypted session creation between client and server

  1. Input Param

    1.1 termId: Terminal ID given by PayOn

    1.2 txnId: Merchant transaction identification number

  2. Return: none

String PayOnEncrypt(data, isHexString)

Data encryption

  1. Input Param

    1.1 data: Data to be encrypted 1.2 isHexString: False if the data to be encrypted is a general string, true if it is a Hex String.

  2. Return: Encrypted data

String PayOnDecrypt(data)

Data decryption

  1. Input Param

    1.1 data: Data to be decrypted

  2. Return: Decrypted data

String PayOnGenerateMAC(data, isHexString)

Generate MAC value for message verification

  1. Input Param

    1.1 data: MAC Data for generation 1.2 isHexString: False if the data to be encrypted is general string, true if it is a Hex String.

  2. return: MAC value for message verification.

4.1.2 Message Encryption Example

$payOnCipher = new PayOnCipher();
$payOnCipher->createSession($termId, $txnId);
$encryptData = $payOnCipher->PayOnEncrypt($data);
PayOnCipher cp = new PayOnCipher();
cp.createSession(termId, txnId);
String encryptData = cp.PayOnEncrypt(data, false);

4.1.3 Message Decryption Example

$payOnCipher = new PayOnCipher();
$payOnCipher->createSession($termId, $txnId);
$decryptData = $payOnCipher->PayOnDecrypt($data);
PayOnCipher cp = new PayOnCipher();
cp.createSession(termId, txnId);
String decryptData = cp.PayOnDecrypt(data);

4.1.3 Message Generate MAC Example

$payOnCipher = new PayOnCipher();
$payOnCipher->createSession($termId, $txnId);
$mac = $payOnCipher->PayOnGenerateMAC($data);
cp = new PayOnCipher();
cp.createSession(termId, txnId);
String mac = cp.PayOnGenerateMAC(data);
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Last updated 4 years ago

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