Tcl

Create Egypt ITIDA CAdES-BES .p7s Signature (with strings in-memory)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements.

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

Tcl

load ./chilkat.dll

set success 0

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

set crypt [new_CkCrypt2]

set cert [new_CkCert]

# 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..
set success [CkCert_LoadFromSmartcard $cert ""]
if {$success != 1} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkCrypt2 $crypt
    delete_CkCert $cert
    exit
}

# Tell the crypt component to use this cert.
set success [CkCrypt2_SetSigningCert $crypt $cert]
if {$success != 1} then {
    puts [CkCrypt2_lastErrorText $crypt]
    delete_CkCrypt2 $crypt
    delete_CkCert $cert
    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
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

# Make sure we sign the utf-8 byte representation of the JSON string
CkCrypt2_put_Charset $crypt "utf-8"

# Create the CAdES-BES signature.
set textToSign "\"issuer\"\"address\"\"branchID\"\"0\"\"country\"\"EG\"\"regionCity..."

CkCrypt2_put_EncodingMode $crypt "base64"
set sigBase64 [CkCrypt2_signStringENC $crypt $textToSign]
if {[CkCrypt2_get_LastMethodSuccess $crypt] == 0} then {
    puts [CkCrypt2_lastErrorText $crypt]
    delete_CkCrypt2 $crypt
    delete_CkCert $cert
    delete_CkJsonObject $cmsOptions
    delete_CkJsonObject $jsonSigningAttrs
    exit
}

puts "Base64 signature:"
puts "$sigBase64"

delete_CkCrypt2 $crypt
delete_CkCert $cert
delete_CkJsonObject $cmsOptions
delete_CkJsonObject $jsonSigningAttrs