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Create Egypt ITIDA CAdES-BES Signature with Automatic JSON Canonicalization

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements where Chilkat automatically does the ITIDA JSON canonicalization.

Note: This example requires Chilkat v9.5.0.75 or greater.

Chilkat SQL Server Downloads

SQL Server
-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    --  This example assumes the Chilkat API to have been previously unlocked.
    --  See Global Unlock Sample for sample code.

    DECLARE @crypt int
    EXEC @hr = sp_OACreate 'Chilkat.Crypt2', @crypt OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @crypt, 'VerboseLogging', 1

    DECLARE @cert int
    EXEC @hr = sp_OACreate 'Chilkat.Cert', @cert OUT

    EXEC sp_OASetProperty @cert, 'VerboseLogging', 1

    --  Set the smart card PIN, which will be needed for signing.
    EXEC sp_OASetProperty @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..
    EXEC sp_OAMethod @cert, 'LoadFromSmartcard', @success OUT, ''
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    --  Tell the crypt class to use this cert.
    EXEC sp_OAMethod @crypt, 'SetSigningCert', @success OUT, @cert
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    DECLARE @cmsOptions int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @cmsOptions OUT

    --  Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
    EXEC sp_OAMethod @cmsOptions, 'UpdateBool', @success OUT, 'DigestData', 1
    EXEC sp_OAMethod @cmsOptions, 'UpdateBool', @success OUT, 'OmitAlgorithmIdNull', 1

    --  Indicate that we are passing normal JSON and we want Chilkat do automatically
    --  do the ITIDA JSON canonicalization:
    EXEC sp_OAMethod @cmsOptions, 'UpdateBool', @success OUT, 'CanonicalizeITIDA', 1

    EXEC sp_OAMethod @cmsOptions, 'Emit', @sTmp0 OUT
    EXEC sp_OASetProperty @crypt, 'CmsOptions', @sTmp0

    --  The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
    --  To create a CAdES-BES signature, set this property equal to true. 
    EXEC sp_OASetProperty @crypt, 'CadesEnabled', 1

    EXEC sp_OASetProperty @crypt, 'HashAlgorithm', 'sha256'

    DECLARE @jsonSigningAttrs int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonSigningAttrs OUT

    EXEC sp_OAMethod @jsonSigningAttrs, 'UpdateInt', @success OUT, 'contentType', 1
    EXEC sp_OAMethod @jsonSigningAttrs, 'UpdateInt', @success OUT, 'signingTime', 1
    EXEC sp_OAMethod @jsonSigningAttrs, 'UpdateInt', @success OUT, 'messageDigest', 1
    EXEC sp_OAMethod @jsonSigningAttrs, 'UpdateInt', @success OUT, 'signingCertificateV2', 1
    EXEC sp_OAMethod @jsonSigningAttrs, 'Emit', @sTmp0 OUT
    EXEC sp_OASetProperty @crypt, 'SigningAttributes', @sTmp0

    --  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:
    EXEC sp_OASetProperty @crypt, 'IncludeCertChain', 0

    --  Pass a JSON document such as the following.  Chilkat will do the ITIDA canonicalization.
    --  (It is the canonicalized JSON that gets signed.)

    --        {
    --           "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,
    --        }
    --  

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'LoadFile', @success OUT, 'qa_data/itida/sdk.invoicing.eta.gov.eg/files/one-doc.json'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @json, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @cmsOptions
        EXEC @hr = sp_OADestroy @jsonSigningAttrs
        EXEC @hr = sp_OADestroy @json
        RETURN
      END
    EXEC sp_OASetProperty @json, 'EmitCompact', 0

    --  Create the CAdES-BES signature.
    EXEC sp_OASetProperty @crypt, 'EncodingMode', 'base64'

    --  Make sure we sign the utf-8 byte representation of the JSON string
    EXEC sp_OASetProperty @crypt, 'Charset', 'utf-8'

    DECLARE @sigBase64 nvarchar(4000)
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    EXEC sp_OAMethod @crypt, 'SignStringENC', @sigBase64 OUT, @sTmp0
    EXEC sp_OAGetProperty @crypt, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @crypt, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @crypt
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @cmsOptions
        EXEC @hr = sp_OADestroy @jsonSigningAttrs
        EXEC @hr = sp_OADestroy @json
        RETURN
      END


    PRINT 'Base64 signature:'

    PRINT @sigBase64

    --  Add the signature to the JSON.
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'signatures[0].signatureType', 'I'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'signatures[0].value', @sigBase64


    PRINT 'JSON with signature added:'
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @crypt
    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @cmsOptions
    EXEC @hr = sp_OADestroy @jsonSigningAttrs
    EXEC @hr = sp_OADestroy @json


END
GO