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Classic ASP

CADES-BES Signature using ePass2003 Token

See more Egypt ITIDA Examples

Demonstrates using a certificate and private key located on an ePass2003 USB token to create a CADES-BES signature.

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

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Classic ASP
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success = 0

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

set scmd = Server.CreateObject("Chilkat.ScMinidriver")

'  Reader names (smart card readers or USB tokens) can be discovered
'  via List Readers or Find Smart Cards
readerName = "FS USB Token 0"
success = scmd.AcquireContext(readerName)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( scmd.LastErrorText) & "</pre>"
    Response.End
End If

'  If successful, the name of the currently inserted smart card is available:
Response.Write "<pre>" & Server.HTMLEncode( "Card name: " & scmd.CardName) & "</pre>"

'  If desired, perform regular PIN authentication with the smartcard.
'  For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
retval = scmd.PinAuthenticate("user","12345678")
If (retval <> 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( "PIN Authentication failed.") & "</pre>"
End If

'  You can find a cerficate using any of the following certificate parts:
'  "subjectDN" -- The full distinguished name of the cert.
'  "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
'  "subjectCN" -- The common name part (CN) of the certificate's subject.
'  "serial" -- The certificate serial number.
'  "serial:issuerCN" -- The certificate serial number + the issuer's common name, delimited with a colon char.
'  These are the same certificate parts that can be retrieved by listing certificates on the smart card (or USB token).
'  See List Certificates on Smart Card Example
certPart = "subjectCN"
partValue = "Matt"

'  If the certificate is found, it is loaded into the cert object.
'  Note: We imported this certificate from a .p12/.pfx using code such as this Example to Import a .pfx/.p12 onto a Smart Card
set cert = Server.CreateObject("Chilkat.Cert")
success = scmd.FindCert(certPart,partValue,cert)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Failed to find the certificate.") & "</pre>"
    success = scmd.DeleteContext()
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Successfully loaded the cert object from the smart card / USB token.") & "</pre>"

'  Note: When successful, the cert object is internally linked to the ScMinidriver object's authenticated session.
'  The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token.
'  If your application calls PinDeauthenticate or DeleteContext, the cert will no longer be able to sign on the smart card
'  because the smart card ScMinidriver session will no longer be authenticated or deleted.

'  ------------------------------------------------------------------------------------------------------------

'  Here we have to code to create the CADES-BES signature using Chilkat Crypt2..
set crypt = Server.CreateObject("Chilkat.Crypt2")

'  Tell the crypt class to use the cert on the ePass2003 token.
success = crypt.SetSigningCert(cert)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"
    Response.End
End If

set cmsOptions = Server.CreateObject("Chilkat.JsonObject")
'  Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
success = cmsOptions.UpdateBool("DigestData",1)
success = cmsOptions.UpdateBool("OmitAlgorithmIdNull",1)

'  Indicate that we are passing normal JSON and we want Chilkat do automatically
'  do the ITIDA JSON canonicalization:
success = cmsOptions.UpdateBool("CanonicalizeITIDA",1)

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 = 1

crypt.HashAlgorithm = "sha256"

set jsonSigningAttrs = Server.CreateObject("Chilkat.JsonObject")
success = jsonSigningAttrs.UpdateInt("contentType",1)
success = jsonSigningAttrs.UpdateInt("signingTime",1)
success = jsonSigningAttrs.UpdateInt("messageDigest",1)
success = 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 = 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,
'        }
'  

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.LoadFile("qa_data/itida/sdk.invoicing.eta.gov.eg/files/one-doc.json")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( json.LastErrorText) & "</pre>"
    Response.End
End If

json.EmitCompact = 0

'  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"

sigBase64 = crypt.SignStringENC(json.Emit())
If (crypt.LastMethodSuccess = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Base64 signature:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( sigBase64) & "</pre>"

'  Add the signature to the JSON.
success = json.UpdateString("signatures[0].signatureType","I")
success = json.UpdateString("signatures[0].value",sigBase64)

Response.Write "<pre>" & Server.HTMLEncode( "JSON with signature added:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"

'  ------------------------------------------------------------------------------------------------------------
'  Cleanup our ScMinidriver session...

'  When finished with operations that required authentication, you may if you wish, deauthenticate the session.
success = scmd.PinDeauthenticate("user")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( scmd.LastErrorText) & "</pre>"
End If

'  Delete the context when finished with the card.
success = scmd.DeleteContext()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( scmd.LastErrorText) & "</pre>"
End If


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