phannaly / emv-qr-code

EMV QR Code library for encode and decode both Merchant Presented Mode and Consumer Presented Mode

EMV QR Code

EMV QR Code library for encode and decode both Merchant Presented Mode and Consumer Presented Mode

Usage

You can install this package from the central Maven repositories:

Maven

<dependency>
    <groupId>com.github.phannaly</groupId>
    <artifactId>emv-qr-code</artifactId>
    <version>0.0.5</version>
</dependency>

Gradle

implementation 'com.github.phannaly:emv-qr-code:0.0.5'

Features

• Merchant Presented Mode decode
• Validate CRC
• Merchant Presented Mode encode
• Consumer Presented Mode encode
• Consumer Presented Mode decode

Merchant Presented Mode decode

 val merchantPresentedMode = MerchantPresentedDecoder.decode(
    "00020101021252044131153137210116372101160123456789ABCDE6010Phnom Penh5913Merchant Shop5802KH540510.005303840622501081234567802090124444446304A0BA"
 )

merchantPresentedMode.isDynamic // true
merchantPresentedMode.payloadFormatIndicator // "01"
merchantPresentedMode.pointOfInitiationMethod // "12"
merchantPresentedMode.merchantAccountInformation // "37210116372101160123456789ABCDE"
merchantPresentedMode.merchantCategoryCode // "4131"
merchantPresentedMode.transactionCurrency // "840"
merchantPresentedMode.currency // "USD"
merchantPresentedMode.transactionAmount // "10.00"
merchantPresentedMode.countryCode // "KH"
merchantPresentedMode.merchantName // "Merchant Shop"
merchantPresentedMode.merchantCity // "Phnom Penh"
merchantPresentedMode.additionalDataFieldTemplate // "0108123456780209012444444"
merchantPresentedMode.crc // "A0BA"

Merchant Presented Mode encode

val merchantPresentedMode = MerchantPresentedEncoder()
val merchantAccountInformation = MerchantAccountInformation()
merchantAccountInformation.value = "37210116372101160123456789ABCDE"
merchantAccountInformation.tag = "15"

// add your custom additional data field template here
val additionalDataField = AdditionalDataField()
additionalDataField.billNumber = "12345678"
additionalDataField.mobileNumber = "012444444"

merchantPresentedMode.merchantAccountInformation = merchantAccountInformation
merchantPresentedMode.additionalDataField = additionalDataField
merchantPresentedMode.pointOfInitiationMethod = "12"
merchantPresentedMode.payloadFormatIndicator = "01"
merchantPresentedMode.merchantCategoryCode = "4131"
merchantPresentedMode.transactionCurrency = "840"
merchantPresentedMode.transactionAmount = "10.00"
merchantPresentedMode.countryCode = "KH"
merchantPresentedMode.merchantName = "Merchant Shop"
merchantPresentedMode.merchantCity = "Phnom Penh"

merchantPresentedMode.encode()
// 00020101021252044131153137210116372101160123456789ABCDE6010Phnom Penh5913Merchant Shop5802KH540510.005303840622501081234567802090124444446304A0BA

merchantAccountInformation.paymentNetwork()
// UnionPay

CRC

CRC has been validated by default, but you can skip it by just set second params to false

val merchantPresentedMode = MerchantPresentedDecoder.decode(
  "00020101021252044131153137210116372101160123456789ABCDE6010Phnom Penh5913Merchant Shop5802KH540510.005303840622501081234567802090124444446304A0BA",
  false
)

Compute CRC

CRC.calculate("00020101021252044131153137210116372101160123456789ABCDE6010Phnom Penh5913Merchant Shop5802KH540510.005303840622501081234567802090124444446304")
// A0BA

Validate CRC

CRC.validate("00020101021252044131153137210116372101160123456789ABCDE6010Phnom Penh5913Merchant Shop5802KH540510.005303840622501081234567802090124444446304A0BA")
// true

License

This project is licensed under the MIT License - see the LICENSE file for details