Code Sample: Decrypting Webhook Payload
The Webhook data payload is encrypted for security purposes, and it can be decrypted using accessToken below:
Javascript
NPM Package: https://www.npmjs.com/package/jsonwebtoken
Sample code
import jwt from "jsonwebtoken";
// JWT token received from the webhook response's data field
const webhookData = "eyJhbGciOiJIU.eyJ3ZWJob29-rRGF0.W07q-JG6jlyzid4";
// Secret key used for validating and decoding the JWT token
// Reference: https://docs.transak.com/reference/refresh-access-token
const accessToken = "ACCESS_TOKEN";
// Verify and decode the JWT token using the secret key
const decodedData = jwt.verify(webhookData, accessToken);
// Output the decoded claims to the console
console.log(decodedData);
Java
dependencies {
// Other dependencies...
// JWT dependencies
implementation 'io.jsonwebtoken:jjwt-api:0.11.5'
implementation 'io.jsonwebtoken:jjwt-impl:0.11.5'
implementation 'io.jsonwebtoken:jjwt-jackson:0.11.5'
}
<dependencies>
<!-- Other dependencies... -->
<!-- JWT dependencies -->
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-api</artifactId>
<version>0.11.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-impl</artifactId>
<version>0.11.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-jackson</artifactId>
<version>0.11.5</version>
</dependency>
</dependencies>
Sample code
package com.transak.webhookjavamaven;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.security.Keys;
import javax.crypto.SecretKey;
public class WebhookJavaMavenApplication {
public static void main(String[] args) {
// JWT token received from the webhook response's data field
String webhookData = "eyJhbGciOiJIU.eyJ3ZWJob29-rRGF0.W07q-JG6jlyzid4";
// Secret key used for validating and decoding the JWT token
// Reference: https://docs.transak.com/reference/refresh-access-token
String accessToken = "ACCESS_TOKEN";
// Create the secret key for HMAC SHA signing using the access token
SecretKey key = Keys.hmacShaKeyFor(accessToken.getBytes());
// Parse the JWT token to extract claims using the secret key
Claims claims = Jwts.parserBuilder()
.setSigningKey(key) // Set the signing key for verification
.build()
.parseClaimsJws(webhookData) // Parse the JWT string
.getBody(); // Extract the claims from the token
// Print the extracted claims to the console
System.out.println("Claims: " + claims);
}
}
Golang
Package: https://pkg.go.dev/github.com/golang-jwt/jwt/v5
Sample Code
package main
import (
"encoding/json"
"fmt"
"log"
"github.com/golang-jwt/jwt/v5"
)
func main() {
// JWT token received from the webhook response's data field
webhookData := "eyJhbGciOiJIU.eyJ3ZWJob29-rRGF0.W07q-JG6jlyzid4"
// Secret key used for validating and decoding the JWT token
// Reference: https://docs.transak.com/reference/refresh-access-token
secretKey := "ACCESS_TOKEN"
// Parse the JWT token using the secret key
token, _ := jwt.Parse(webhookData, func(token *jwt.Token) (interface{}, error) {
return []byte(secretKey), nil
})
// Check if the token is valid and decode claims if possible
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
// Pretty-print the decoded claims as JSON
jsonData, _ := json.MarshalIndent(claims, "", " ")
fmt.Println("Decoded JWT Claims:\n", string(jsonData))
} else {
// Log an error message if the token is invalid or claims are missing
log.Println("Invalid JWT or claims")
}
}
Sample decrypted payload data
{
"webhookData": {
"id": "181b6159-2192-4f68-8647-f48e6e8f58c7",
"walletAddress": "0xD902d7eBF7bc5eCa9EEA22a6Ee9F1A30EBeBEFeE",
"createdAt": "2024-08-23T10:33:09.426Z",
"status": "COMPLETED",
"fiatCurrency": "EUR",
"userId": "243a8ce2-9cc6-41a9-aaeb-b0deeb0b19a3",
"cryptoCurrency": "ETH",
"isBuyOrSell": "BUY",
"fiatAmount": 32,
"ipAddress": "35.177.158.9",
"amountPaid": 32,
"paymentOptionId": "sepa_bank_transfer",
"walletLink": "https://sepolia.etherscan.io/address/0xD902d7eBF7bc5eCa9EEA22a6Ee9F1A30EBeBEFeE",
"quoteId": "0b9edf4d-2de1-4f2e-bdb6-07bc61c380f5",
"orderProcessingType": "NORMAL",
"addressAdditionalData": false,
"network": "ethereum",
"conversionPrice": 0.00041416655266757863,
"cryptoAmount": 0.01211023,
"totalFeeInFiat": 2.76,
"fiatAmountInUsd": 35.57,
"countryCode": "IN",
"stateCode": "Karnataka",
"orderChannelType": "WIDGET",
"userKycType": "STANDARD",
"cardPaymentData": {
"orderId": "181b6159-2192-4f68-8647-f48e6e8f58c7",
"paymentId": "66c8656bb38a7908fadc77db",
"pgData": {
"paymentOptions": [
{
"currency": "EUR",
"id": "sepa_bank_transfer",
"name": "Bank Transfer Details",
"fields": [
{
"name": "Bank Name",
"value": "Transak Limited"
},
{
"name": "IBAN",
"value": "GB69MOCK00000003743944"
},
{
"name": "Bank Name",
"value": "Modulr"
},
{
"name": "Bank Address",
"value": "Scale Space, 58 Wood Lane, London, W12 7RZ"
}
]
}
],
"liquidityProvider": "MODULR",
"status": "CREATED"
},
"liquidityProvider": "MODULR",
"updatedAt": "2024-08-23T10:33:58.753Z",
"status": "CAPTURED",
"processedOn": "2024-08-23T10:33:57.000Z"
},
"statusHistories": [
{
"status": "PENDING_DELIVERY_FROM_TRANSAK",
"createdAt": "2024-08-23T10:33:59.408Z",
"message": "*💸 Payment reconciled successfully. Received 32 EUR",
"isEmailSentToUser": false,
"partnerEventId": "ORDER_PROCESSING"
}
],
"isFirstOrder": false,
"updatedAt": "2024-08-23T10:34:06.371Z",
"completedAt": "2024-08-23T10:34:39.412Z",
"transactionHash": "DUMMY_TX_ID",
"transactionLink": "https://sepolia.etherscan.io/tx/DUMMY_TX_ID",
"conversionPriceData": {
"_id": "139474c7-99c5-4232-9a05-c6ccd6a973ed",
"id": "139474c7-99c5-4232-9a05-c6ccd6a973ed",
"createdAt": "2024-08-23T10:34:06.352Z",
"fiatCurrency": "EUR",
"cryptoCurrency": "ETH",
"paymentMethod": "sepa_bank_transfer",
"fiatAmount": 32,
"network": "ethereum",
"cryptoAmount": 0.01211023,
"isBuyOrSell": "BUY",
"conversionPrice": 0.00041416641727771563,
"marketConversionPrice": 0.00041628949369556297,
"slippage": 0.51,
"cryptoLiquidityProvider": "transak",
"fiatLiquidityProvider": "coinbase",
"partnerApiKey": "d79671a4-b021-4a4f-a444-6862a680a94b",
"sourceTokenAmount": 0.012110226041200406,
"sourceToken": "ETH",
"notes": [],
"fiatFeeAmount": 2.76,
"feeDecimal": 0.08625,
"swaps": [
{
"sourceCurrency": "EUR",
"destinationCurrency": "USDT",
"sourceAmount": 32,
"destinationAmount": 35.57563545494966,
"paymentMethod": "sepa_bank_transfer",
"liquidityProvider": "coinbase",
"conversionPrice": 1.111738607967177,
"feeInSourceAmount": 0,
"networkFeeInSourceAmount": 0,
"marketConversionPrice": 1.111738607967177,
"isNonCustodial": false,
"isFiatliquidityProvider": true,
"isFiatPartnerDirectCryptoDeposit": false,
"isFiatPartnerAccountWalletDeposit": false,
"liquidityProviderData": false,
"originalDestinationAmount": 35.57563545494966
},
{
"sourceCurrency": "USDT",
"destinationCurrency": "ETH",
"sourceAmount": 35.57563545494966,
"destinationAmount": 0.0132533253528869,
"liquidityProvider": "transak",
"conversionPrice": 0.0003725393849863884,
"networkFeeInSourceAmount": 0,
"networkFeeInDestinationAmount": 0,
"marketConversionPrice": 0.0003725393849863884,
"liquidityProviderData": false,
"isNonCustodial": false
},
{
"sourceCurrency": "ETH",
"destinationCurrency": "ETH",
"sourceAmount": 0.0132533253528869,
"destinationAmount": 0.0132533253528869,
"liquidityProvider": "transak",
"conversionPrice": 1,
"isCryptoliquidityProvider": true,
"networkFeeInSourceAmount": 0.000067651170404,
"networkFeeInDestinationAmount": 0.000067651170404,
"marketConversionPrice": 1,
"liquidityProviderData": false,
"isFiatPartnerAccountWalletDeposit": false
}
],
"fees": [
{
"name": "Transak fee",
"value": 2.6,
"id": "transak_fee",
"ids": [
"transak_fee",
"partner_fee"
]
},
{
"name": "Network/Exchange fee",
"value": 0.16,
"id": "network_fee",
"ids": [
"network_fee"
]
}
],
"fiatAmountInUsd": 35.57,
"internalFees": [
{
"name": "Network/Exchange fee",
"id": "network_fee",
"value": 0.16
},
{
"name": "Transak fee",
"id": "transak_fee",
"value": 1
},
{
"name": "Transak fee",
"id": "partner_fee",
"value": 1.6
}
],
"cost": {
"ethPriceInLocalCurrency": 2402.17448469,
"gasCostinLocalCurrency": 0.16334786495892,
"transakMinimumFee": 1,
"transakFeeAmount": 1,
"fiatLiquidityProviderFee": 0,
"gasCostinLocalCurrencyByFiatPartner": 0,
"gasCostinLocalCurrencyByCryptoPartner": 0,
"partnerFeeDecimal": 0.05,
"partnerFeeInLocalCurrency": 1.6,
"totalFeeDecimal": 0.08625,
"totalFeeAmount": 2.76,
"gasCurrency": "ETH",
"gasInNativeToken": 0.000068,
"gasCurrencyRateInUsd": 0.0003744603090795391,
"totalAmountChargedByTransak": 2.76334786495892
}
},
"partnerFeeInLocalCurrency": 1.6
},
"eventID": "ORDER_COMPLETED",
"createdAt": "2024-08-23T10:34:40.070Z"
}
Updated about 1 month ago