Redsys redirection client inspired from the Redsys PHP and Java official clients.
npm install redsys-clientRedsys redirection client inspired from the Redsys PHP and Java official clients.
1. Install the library
``
npm install redsys-client
1. Create the Redsys Client
`
const redsys = new Redsys();
redsys.merchantParameters = {
Ds_Merchant_MerchantCode: "999008881",
Ds_Merchant_Terminal: "1",
Ds_Merchant_TransactionType: "0",
Ds_Merchant_Amount: 1000,
Ds_Merchant_Currency: "978",
Ds_Merchant_Order: "1234567890",
Ds_Merchant_MerchantURL: "https://www.example.com",
};
1. Create the needed merchant parameters and secret to call Redsys
`
const secret = "sq7HjrUOBfKmC576ILgskD5srU870gJ7";
const merchantParameters = redsys.createMerchantParameters();
const signature = redsys.createMerchantSignature(secret);
`
1. To validate a given signature, use createMerchantSignatureNotif. This method will return a URL-safe base64 string. To make sure the comparison is fair, this method should also be applied to the received signature, the library includes an exported function called fromBase64 to do so.
`
const computedSignature = redsys.createMerchantSignatureNotif(secret, params);
if(computedSignature === fromBase64(receivedSignature)){
console.log("OK")
} else {
console.log("INVALID")
}
`
2. As an alternative, a function isMerchantSignatureValid is provided, this function will return a boolean if the signature is valid or invalid.
`
const isValid = redsys.isMerchantSignatureValid(receivedSignature, secret, params);
- Official Redsys documentation