Objective-C
Objective-C
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 Objective-C Downloads
#import <CkoCrypt2.h>
#import <CkoCert.h>
#import <CkoJsonObject.h>
#import <NSString.h>
#import <CkoStringBuilder.h>
#import <CkoHttp.h>
#import <CkoHttpRequest.h>
#import <CkoHttpResponse.h>
BOOL success = NO;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];
crypt.VerboseLogging = YES;
CkoCert *cert = [[CkoCert alloc] init];
cert.VerboseLogging = YES;
// 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..
success = [cert LoadFromSmartcard: @""];
if (success == NO) {
NSLog(@"%@",cert.LastErrorText);
return;
}
// Tell the crypt class to use this cert.
success = [crypt SetSigningCert: cert];
if (success == NO) {
NSLog(@"%@",crypt.LastErrorText);
return;
}
CkoJsonObject *cmsOptions = [[CkoJsonObject alloc] init];
// Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
[cmsOptions UpdateBool: @"DigestData" value: YES];
[cmsOptions UpdateBool: @"OmitAlgorithmIdNull" value: YES];
// Indicate that we are passing normal JSON and we want Chilkat do automatically
// do the ITIDA JSON canonicalization:
[cmsOptions UpdateBool: @"CanonicalizeITIDA" value: YES];
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 = YES;
crypt.HashAlgorithm = @"sha256";
CkoJsonObject *jsonSigningAttrs = [[CkoJsonObject alloc] init];
[jsonSigningAttrs UpdateInt: @"contentType" value: [NSNumber numberWithInt: 1]];
[jsonSigningAttrs UpdateInt: @"signingTime" value: [NSNumber numberWithInt: 1]];
[jsonSigningAttrs UpdateInt: @"messageDigest" value: [NSNumber numberWithInt: 1]];
[jsonSigningAttrs UpdateInt: @"signingCertificateV2" value: [NSNumber numberWithInt: 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 = NO;
// 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";
NSString *jsonInvoice = @"{ ... }";
NSString *sigBase64 = [crypt SignStringENC: jsonInvoice];
if (crypt.LastMethodSuccess == NO) {
NSLog(@"%@",crypt.LastErrorText);
return;
}
NSLog(@"%@",@"Base64 signature:");
NSLog(@"%@",sigBase64);
// Insert the base64 signature into the JSON to be sent
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json Load: jsonInvoice];
[json UpdateString: @"signatures[0].signatureType" value: @"I"];
[json UpdateString: @"signatures[0].value" value: sigBase64];
json.EmitCompact = YES;
// Wrap the JSON in {"documents":[ ... ]}
CkoStringBuilder *sbToSend = [[CkoStringBuilder alloc] init];
[sbToSend Append: @"{\"documents\":["];
[sbToSend Append: [json Emit]];
[sbToSend Append: @"]}"];
// ------------------------------------------------------------------------
// Get an access token using our client ID and client secret key
NSString *clientId = @"abc999ff-1234";
NSString *clientSecretKey = @"123fff22-1234-abcd";
CkoHttp *http = [[CkoHttp alloc] init];
// Causes the Authorization: Basic header to be added..
http.Login = clientId;
http.Password = clientSecretKey;
http.BasicAuth = YES;
CkoHttpRequest *req = [[CkoHttpRequest alloc] init];
req.HttpVerb = @"POST";
req.Path = @"/connect/token";
req.ContentType = @"application/x-www-form-urlencoded";
[req AddParam: @"grant_type" value: @"client_credentials"];
[req AddHeader: @"Connection" value: @"close"];
http.Accept = @"application/json";
CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpReq: @"https://id.preprod.eta.gov.eg/connect/token" request: req response: resp];
if (success == NO) {
NSLog(@"%@",http.LastErrorText);
return;
}
[http CloseAllConnections];
NSLog(@"%@%d",@"Response status code: ",[resp.StatusCode intValue]);
NSLog(@"%@",@"Response body:");
NSLog(@"%@",resp.BodyStr);
if ([resp.StatusCode intValue] != 200) {
NSLog(@"%@",@"Failed.");
return;
}
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
success = [jsonToken Load: resp.BodyStr];
NSString *accessToken = [jsonToken StringOf: @"access_token"];
NSLog(@"%@%@",@"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 = NO;
// Setting the AuthToken property causes the "Authorization: Bearer <token>" header to be added to each request.
http.AuthToken = accessToken;
NSString *url = @"https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions";
NSString *jsonStr = [sbToSend GetAsString];
success = [http HttpStr: @"POST" url: url bodyStr: jsonStr charset: @"utf-8" contentType: @"application/json; charset=utf-8" response: resp];
if (success == NO) {
NSLog(@"%@",http.LastErrorText);
return;
}
NSLog(@"%@%d",@"Response status code: ",[resp.StatusCode intValue]);
NSLog(@"%@",@"Response body:");
NSLog(@"%@",resp.BodyStr);