React Native Requires Chilkat v11.0.0+
React Native
Sign ITIDA JSON and Send to ETA (Egypt Tax Authority) Portal
See more Egypt ITIDA Examples
Demonstrates how to ITIDA canonicalize JSON, create signature, and send to the ETA Portal.Chilkat React Native Downloads
import { Cert, Crypt2, Http, HttpRequest, HttpResponse, JsonObject, StringBuilder } from '@chilkat/react-native'
async function chilkatExample() {
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
const crypt = new Crypt2();
crypt.verboseLogging = true;
const cert = new Cert();
cert.verboseLogging = true;
// Set the smart card PIN, which will be needed for signing.
cert.smartCardPin = '12345678';
// There are many ways to load the certificate.
// This example was created for a customer using an ePass2003 USB token.
// Assuming the USB token is the only source of a hardware-based private key..
try {
cert.loadFromSmartcard('');
} catch {
console.log(cert.lastErrorText);
return;
}
// Tell the crypt class to use this cert.
try {
crypt.setSigningCert(cert);
} catch {
console.log(crypt.lastErrorText);
return;
}
const cmsOptions = new JsonObject();
// Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
cmsOptions.updateBool('DigestData', true);
cmsOptions.updateBool('OmitAlgorithmIdNull', true);
// Indicate that we are passing normal JSON and we want Chilkat do automatically
// do the ITIDA JSON canonicalization:
cmsOptions.updateBool('CanonicalizeITIDA', true);
crypt.cmsOptions = cmsOptions.emit();
// The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures.
// To create a CAdES-BES signature, set this property equal to true.
crypt.cadesEnabled = true;
crypt.hashAlgorithm = 'sha256';
const jsonSigningAttrs = new JsonObject();
jsonSigningAttrs.updateInt('contentType', 1);
jsonSigningAttrs.updateInt('signingTime', 1);
jsonSigningAttrs.updateInt('messageDigest', 1);
jsonSigningAttrs.updateInt('signingCertificateV2', 1);
crypt.signingAttributes = jsonSigningAttrs.emit();
// By default, all the certs in the chain of authentication are included in the signature.
// If desired, we can choose to only include the signing certificate:
crypt.includeCertChain = false;
// Pass a JSON document such as the following. Chilkat will do the ITIDA canonicalization.
// (It is the canonicalized JSON that gets signed.)
// Note: The JSON should NOT begin with "{ "documents" : [ ..."
// {
// "issuer":{
// "address":{
// "branchID":"0",
// "country":"EG",
// "regionCity":"Cairo",
// "postalCode":"",
// "buildingNumber":"0",
// "street":"123rd Street",
// "governate":"GOVERNATE"
// },
// "type":"B",
// "id":"209999899",
// "name":"Xyz SAE"
// },
// "receiver":{
// "address":{
// "country":"EG",
// "regionCity":"CAIRO",
// "postalCode":"11435",
// "buildingNumber":"0",
// "street":"Autostrad Road Abc",
// "governate":"GOVERNATE"
// },
// "type":"B",
// "id":"999999999",
// "name":"XYZ EGYPT FOR TRADE"
// },
// "documentType":"I",
// "documentTypeVersion":"1.0",
// "dateTimeIssued":"2020-11-15T11:04:53Z",
// "taxpayerActivityCode":"1073",
// "internalID":"ZZZZ999",
// "purchaseOrderReference":"2009199918",
// "salesOrderReference":"",
// "payment":{
// "bankName":"",
// "bankAddress":"",
// "bankAccountNo":"",
// "bankAccountIBAN":"",
// "swiftCode":"",
// "terms":""
// },
// "delivery":{
// "approach":"",
// "packaging":"",
// "dateValidity":"",
// "exportPort":"",
// "countryOfOrigin":"EG",
// "grossWeight":0,
// "netWeight":0,
// "terms":""
// },
// "invoiceLines":[
// {
// "description":"CDM Widget 48GX99X12BA",
// "itemType":"GS1",
// "itemCode":"7622213335056",
// "unitType":"CS",
// "quantity":1.00,
// "unitValue":{
// "currencySold":"EGP",
// "amountEGP":588.67,
// "amountSold":0,
// "currencyExchangeRate":0
// },
// "salesTotal":588.67,
// "total":603.97,
// "valueDifference":0,
// "totalTaxableFees":0,
// "netTotal":529.8,
// "itemsDiscount":0,
// "discount":{
// "rate":10.00,
// "amount":58.87
// },
// "taxableItems":[
// {
// "taxType":"T1",
// "amount":74.17,
// "subType":"No sub",
// "rate":14.00
// }
// ],
// "internalCode":"9099994"
// }
// ],
// "totalSales":588.67,
// "totalSalesAmount":588.67,
// "totalDiscountAmount":58.87,
// "netAmount":529.80,
// "taxTotals":[
// {
// "taxType":"T1",
// "amount":74.17
// }
// ],
// "extraDiscountAmount":0,
// "totalItemsDiscountAmount":0,
// "totalAmount":603.97,
// }
// Create the CAdES-BES signature.
crypt.encodingMode = 'base64';
// Make sure we sign the utf-8 byte representation of the JSON string
crypt.charset = 'utf-8';
const jsonInvoice = '{ ... }';
let sigBase64: string;
try {
sigBase64 = await crypt.signStringENCAsync(jsonInvoice);
} catch {
console.log(crypt.lastErrorText);
return;
}
console.log('Base64 signature:');
console.log(sigBase64);
// Insert the base64 signature into the JSON to be sent
const json = new JsonObject();
json.load(jsonInvoice);
json.updateString('signatures[0].signatureType', 'I');
json.updateString('signatures[0].value', sigBase64);
json.emitCompact = true;
// Wrap the JSON in {"documents":[ ... ]}
const sbToSend = new StringBuilder();
sbToSend.append('{"documents":[');
sbToSend.append(json.emit());
sbToSend.append(']}');
// ------------------------------------------------------------------------
// Get an access token using our client ID and client secret key
const clientId = 'abc999ff-1234';
const clientSecretKey = '123fff22-1234-abcd';
const http = new Http();
// Causes the Authorization: Basic header to be added..
http.login = clientId;
http.password = clientSecretKey;
http.basicAuth = true;
const req = new HttpRequest();
req.httpVerb = 'POST';
req.path = '/connect/token';
req.contentType = 'application/x-www-form-urlencoded';
req.addParam('grant_type', 'client_credentials');
req.addHeader('Connection', 'close');
http.accept = 'application/json';
const resp = new HttpResponse();
try {
await http.httpReqAsync('https://id.preprod.eta.gov.eg/connect/token', req, resp);
} catch {
console.log(http.lastErrorText);
return;
}
await http.closeAllConnectionsAsync();
console.log(`Response status code: ${resp.statusCode}`);
console.log('Response body:');
console.log(resp.bodyStr);
if (resp.statusCode !== 200) {
console.log('Failed.');
return;
}
const jsonToken = new JsonObject();
jsonToken.load(resp.bodyStr);
const accessToken = jsonToken.stringOf('access_token');
console.log(`access_token = ${accessToken}`);
// ------------------------------------------------------------------------
// Submit the signed JSON to the ETA (Egypt Tax Authority) Portal
// No longer sending basic authentication...
http.login = '';
http.password = '';
http.basicAuth = false;
// Setting the AuthToken property causes the "Authorization: Bearer <token>" header to be added to each request.
http.authToken = accessToken;
const url = 'https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions';
const jsonStr = sbToSend.getAsString();
try {
await http.httpStrAsync('POST', url, jsonStr, 'utf-8', 'application/json; charset=utf-8', resp);
} catch {
console.log(http.lastErrorText);
return;
}
console.log(`Response status code: ${resp.statusCode}`);
console.log('Response body:');
console.log(resp.bodyStr);
}