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(PureBasic) CADES-BES Signature using ePass2003 TokenSee more Egypt ITIDA ExamplesDemonstrates 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.)
IncludeFile "CkCert.pb" IncludeFile "CkJsonObject.pb" IncludeFile "CkScMinidriver.pb" IncludeFile "CkCrypt2.pb" Procedure ChilkatExample() ; This example requires the Chilkat API to have been previously unlocked. ; See Global Unlock Sample for sample code. scmd.i = CkScMinidriver::ckCreate() If scmd.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; Reader names (smart card readers or USB tokens) can be discovered ; via List Readers or Find Smart Cards readerName.s = "FS USB Token 0" success.i = CkScMinidriver::ckAcquireContext(scmd,readerName) If success = 0 Debug CkScMinidriver::ckLastErrorText(scmd) CkScMinidriver::ckDispose(scmd) ProcedureReturn EndIf ; If successful, the name of the currently inserted smart card is available: Debug "Card name: " + CkScMinidriver::ckCardName(scmd) ; 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.i = CkScMinidriver::ckPinAuthenticate(scmd,"user","12345678") If retval <> 0 Debug "PIN Authentication failed." EndIf ; 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.s = "subjectCN" partValue.s = "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 cert.i = CkCert::ckCreate() If cert.i = 0 Debug "Failed to create object." ProcedureReturn EndIf success = CkScMinidriver::ckFindCert(scmd,certPart,partValue,cert) If success = 0 Debug "Failed to find the certificate." CkScMinidriver::ckDeleteContext(scmd) CkScMinidriver::ckDispose(scmd) CkCert::ckDispose(cert) ProcedureReturn EndIf Debug "Successfully loaded the cert object from the smart card / USB token." ; 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.. crypt.i = CkCrypt2::ckCreate() If crypt.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; Tell the crypt class to use the cert on the ePass2003 token. success = CkCrypt2::ckSetSigningCert(crypt,cert) If success <> 1 Debug CkCrypt2::ckLastErrorText(crypt) CkScMinidriver::ckDispose(scmd) CkCert::ckDispose(cert) CkCrypt2::ckDispose(crypt) ProcedureReturn EndIf cmsOptions.i = CkJsonObject::ckCreate() If cmsOptions.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used. CkJsonObject::ckUpdateBool(cmsOptions,"DigestData",1) CkJsonObject::ckUpdateBool(cmsOptions,"OmitAlgorithmIdNull",1) ; Indicate that we are passing normal JSON and we want Chilkat do automatically ; do the ITIDA JSON canonicalization: CkJsonObject::ckUpdateBool(cmsOptions,"CanonicalizeITIDA",1) CkCrypt2::setCkCmsOptions(crypt, CkJsonObject::ckEmit(cmsOptions)) ; The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. ; To create a CAdES-BES signature, set this property equal to true. CkCrypt2::setCkCadesEnabled(crypt, 1) CkCrypt2::setCkHashAlgorithm(crypt, "sha256") jsonSigningAttrs.i = CkJsonObject::ckCreate() If jsonSigningAttrs.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkJsonObject::ckUpdateInt(jsonSigningAttrs,"contentType",1) CkJsonObject::ckUpdateInt(jsonSigningAttrs,"signingTime",1) CkJsonObject::ckUpdateInt(jsonSigningAttrs,"messageDigest",1) CkJsonObject::ckUpdateInt(jsonSigningAttrs,"signingCertificateV2",1) CkCrypt2::setCkSigningAttributes(crypt, CkJsonObject::ckEmit(jsonSigningAttrs)) ; 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: CkCrypt2::setCkIncludeCertChain(crypt, 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, ; } ; json.i = CkJsonObject::ckCreate() If json.i = 0 Debug "Failed to create object." ProcedureReturn EndIf success = CkJsonObject::ckLoadFile(json,"qa_data/itida/sdk.invoicing.eta.gov.eg/files/one-doc.json") If success = 0 Debug CkJsonObject::ckLastErrorText(json) CkScMinidriver::ckDispose(scmd) CkCert::ckDispose(cert) CkCrypt2::ckDispose(crypt) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) ProcedureReturn EndIf CkJsonObject::setCkEmitCompact(json, 0) ; Create the CAdES-BES signature. CkCrypt2::setCkEncodingMode(crypt, "base64") ; Make sure we sign the utf-8 byte representation of the JSON string CkCrypt2::setCkCharset(crypt, "utf-8") sigBase64.s = CkCrypt2::ckSignStringENC(crypt,CkJsonObject::ckEmit(json)) If CkCrypt2::ckLastMethodSuccess(crypt) = 0 Debug CkCrypt2::ckLastErrorText(crypt) CkScMinidriver::ckDispose(scmd) CkCert::ckDispose(cert) CkCrypt2::ckDispose(crypt) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) ProcedureReturn EndIf Debug "Base64 signature:" Debug sigBase64 ; Add the signature to the JSON. CkJsonObject::ckUpdateString(json,"signatures[0].signatureType","I") CkJsonObject::ckUpdateString(json,"signatures[0].value",sigBase64) Debug "JSON with signature added:" Debug CkJsonObject::ckEmit(json) ; ------------------------------------------------------------------------------------------------------------ ; Cleanup our ScMinidriver session... ; When finished with operations that required authentication, you may if you wish, deauthenticate the session. success = CkScMinidriver::ckPinDeauthenticate(scmd,"user") If success = 0 Debug CkScMinidriver::ckLastErrorText(scmd) EndIf ; Delete the context when finished with the card. success = CkScMinidriver::ckDeleteContext(scmd) If success = 0 Debug CkScMinidriver::ckLastErrorText(scmd) EndIf CkScMinidriver::ckDispose(scmd) CkCert::ckDispose(cert) CkCrypt2::ckDispose(crypt) CkJsonObject::ckDispose(cmsOptions) CkJsonObject::ckDispose(jsonSigningAttrs) CkJsonObject::ckDispose(json) ProcedureReturn EndProcedure |
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