Tcl
Tcl
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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load ./chilkat.dll
set success 0
# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.
set scmd [new_CkScMinidriver]
# Reader names (smart card readers or USB tokens) can be discovered
# via List Readers or Find Smart Cards
set readerName "FS USB Token 0"
set success [CkScMinidriver_AcquireContext $scmd $readerName]
if {$success == 0} then {
puts [CkScMinidriver_lastErrorText $scmd]
delete_CkScMinidriver $scmd
exit
}
# If successful, the name of the currently inserted smart card is available:
puts "Card name: [CkScMinidriver_cardName $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
set retval [CkScMinidriver_PinAuthenticate $scmd "user" "12345678"]
if {$retval != 0} then {
puts "PIN Authentication failed."
}
# 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
set certPart "subjectCN"
set 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 [new_CkCert]
set success [CkScMinidriver_FindCert $scmd $certPart $partValue $cert]
if {$success == 0} then {
puts "Failed to find the certificate."
CkScMinidriver_DeleteContext $scmd
delete_CkScMinidriver $scmd
delete_CkCert $cert
exit
}
puts "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..
set crypt [new_CkCrypt2]
# Tell the crypt class to use the cert on the ePass2003 token.
set success [CkCrypt2_SetSigningCert $crypt $cert]
if {$success != 1} then {
puts [CkCrypt2_lastErrorText $crypt]
delete_CkScMinidriver $scmd
delete_CkCert $cert
delete_CkCrypt2 $crypt
exit
}
set cmsOptions [new_CkJsonObject]
# Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
CkJsonObject_UpdateBool $cmsOptions "DigestData" 1
CkJsonObject_UpdateBool $cmsOptions "OmitAlgorithmIdNull" 1
# Indicate that we are passing normal JSON and we want Chilkat do automatically
# do the ITIDA JSON canonicalization:
CkJsonObject_UpdateBool $cmsOptions "CanonicalizeITIDA" 1
CkCrypt2_put_CmsOptions $crypt [CkJsonObject_emit $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_put_CadesEnabled $crypt 1
CkCrypt2_put_HashAlgorithm $crypt "sha256"
set jsonSigningAttrs [new_CkJsonObject]
CkJsonObject_UpdateInt $jsonSigningAttrs "contentType" 1
CkJsonObject_UpdateInt $jsonSigningAttrs "signingTime" 1
CkJsonObject_UpdateInt $jsonSigningAttrs "messageDigest" 1
CkJsonObject_UpdateInt $jsonSigningAttrs "signingCertificateV2" 1
CkCrypt2_put_SigningAttributes $crypt [CkJsonObject_emit $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_put_IncludeCertChain $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,
# }
#
set json [new_CkJsonObject]
set success [CkJsonObject_LoadFile $json "qa_data/itida/sdk.invoicing.eta.gov.eg/files/one-doc.json"]
if {$success == 0} then {
puts [CkJsonObject_lastErrorText $json]
delete_CkScMinidriver $scmd
delete_CkCert $cert
delete_CkCrypt2 $crypt
delete_CkJsonObject $cmsOptions
delete_CkJsonObject $jsonSigningAttrs
delete_CkJsonObject $json
exit
}
CkJsonObject_put_EmitCompact $json 0
# Create the CAdES-BES signature.
CkCrypt2_put_EncodingMode $crypt "base64"
# Make sure we sign the utf-8 byte representation of the JSON string
CkCrypt2_put_Charset $crypt "utf-8"
set sigBase64 [CkCrypt2_signStringENC $crypt [CkJsonObject_emit $json]]
if {[CkCrypt2_get_LastMethodSuccess $crypt] == 0} then {
puts [CkCrypt2_lastErrorText $crypt]
delete_CkScMinidriver $scmd
delete_CkCert $cert
delete_CkCrypt2 $crypt
delete_CkJsonObject $cmsOptions
delete_CkJsonObject $jsonSigningAttrs
delete_CkJsonObject $json
exit
}
puts "Base64 signature:"
puts "$sigBase64"
# Add the signature to the JSON.
CkJsonObject_UpdateString $json "signatures[0].signatureType" "I"
CkJsonObject_UpdateString $json "signatures[0].value" $sigBase64
puts "JSON with signature added:"
puts [CkJsonObject_emit $json]
# ------------------------------------------------------------------------------------------------------------
# Cleanup our ScMinidriver session...
# When finished with operations that required authentication, you may if you wish, deauthenticate the session.
set success [CkScMinidriver_PinDeauthenticate $scmd "user"]
if {$success == 0} then {
puts [CkScMinidriver_lastErrorText $scmd]
}
# Delete the context when finished with the card.
set success [CkScMinidriver_DeleteContext $scmd]
if {$success == 0} then {
puts [CkScMinidriver_lastErrorText $scmd]
}
delete_CkScMinidriver $scmd
delete_CkCert $cert
delete_CkCrypt2 $crypt
delete_CkJsonObject $cmsOptions
delete_CkJsonObject $jsonSigningAttrs
delete_CkJsonObject $json