redsys-api
v0.0.3
Published
A module for the online Redsys payment system
Maintainers
tcharReadme
redsys-api-js
How to use
Create payment form
const RedsysAPI = require('redsys-api');
var redsys = new RedsysAPI();
// Add some Parameters
redsys.setParameter('DS_MERCHANT_AMOUNT', 945);
redsys.setParameter('DS_MERCHANT_ORDER', '123456789101');
redsys.setParameter('DS_MERCHANT_MERCHANTCODE', '343801064');
redsys.setParameter('DS_MERCHANT_CURRENCY', '978');
redsys.setParameter('DS_MERCHANT_TRANSACTIONTYPE', data['transactionType']);
redsys.setParameter('DS_MERCHANT_TERMINAL', '1');
redsys.setParameter('DS_MERCHANT_MERCHANTURL', 'http://some_url.com');
redsys.setParameter('DS_MERCHANT_URLOK', 'http://some_other_url.com');
redsys.setParameter('DS_MERCHANT_URLKO', 'http://another_url.com');
redsys.setParameter('DS_MERCHANT_CONSUMERLANGUAGE', '002');
redsys.setParameter('DS_MERCHANT_PRODUCTDESCRIPTION', 'Some description');
var key = 'sq7HjrUOBfKmC576ILgskD5srU870gJ7';
var params = redsys.createMerchantParameters();
var signature = redsys.createMerchantSignature(key);
return `
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
</head>
<body>
<form action="https://sis-t.redsys.es:25443/sis/realizarPago" method="POST" accept-charset="UTF-8">
<div>
<input type="text" name="Ds_SignatureVersion" value="HMAC_SHA256_V1" />
</div>
<div>
<input type="text" name="Ds_MerchantParameters" value="${params}" />
</div>
<div>
<input type="text" name="Ds_Signature" value="${signature}" />
</div>
<input type="submit" value="Submit" />
</form>
</body>
</html>`;Verify signature
// let data be the data from the notification request. then
const RedsysAPI = require('redsys-api');
var redsys = new RedsysAPI();
var encoded = data['Ds_MerchantParameters'];
var signature = data['Ds_Signature'];
var key = 'sq7HjrUOBfKmC576ILgskD5srU870gJ7';
if (redsys.checkMerchantSignatureNotif(key, encoded, signature)){
var decoded = redsys.decodeMerchantParameters(encoded);
// do something with the decoded data
} else {
// do something else
}Note that there is also a method redsys.createMerchantSignatureNotif(key, encoded) available that returns base64 signature
to compare with the original, however due to some base64 differencies it is recommended to use the
redsys.checkMerchantSignatureNotif(key, encoded, signature) method. However if you want to use it, make sure to convert
the original signature as `Buffer.from(signature, 'base64').toString('base64');