(Tcl) Create CAdES p7m using Azure Key Vault to Sign in the Cloud

See more Signing in the Cloud Examples

Note: This example requires Chilkat v9.5.0.96 or greater.

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load ./chilkat.dll

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

# Load the certificate used for signing.  The certificate's private key is stored in 
# the Azure Key Vault.
# However, we still need the certificate locally (without private key).
set cert [new_CkCert]

set success [CkCert_LoadFromFile $cert "qa_data/certs/myCert.cer"]
if {$success == 0} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkCert $cert
    exit
}

# Here's a screenshot of our certificate with private key on Azure Key Vault:


# To sign using the Azure Key Vault, 
# add the following lines of code to specify your authentication credentials,
# and the name of the certificate w/ private key on the Azure server to be used.
set jsonAzure [new_CkJsonObject]

# Set the "service" equal to "azure_keyvault" to tell Chilkat to use Azure Key Vault for signing.
CkJsonObject_UpdateString $jsonAzure "service" "azure_keyvault"
CkJsonObject_UpdateString $jsonAzure "client_id" "APP_ID"
CkJsonObject_UpdateString $jsonAzure "client_secret" "APP_PASSWORD"
CkJsonObject_UpdateString $jsonAzure "tenant_id" "TENANT_ID"
# In the above screenshot, our vault name is "kvchilkat".  You will use your vault name.
CkJsonObject_UpdateString $jsonAzure "vault_name" "VAULT_NAME"
# In the above screenshot, our cert name is "ChilkatTest1".  You will use your cert name.
CkJsonObject_UpdateString $jsonAzure "cert_name" "CERT_NAME"
# In the above screenshot, our cert version is "63b94a23389546ecbc8eb6208a1bef37".  You will use your cert version.
CkJsonObject_UpdateString $jsonAzure "cert_version" "CERT_VERSION"
set success [CkCert_SetCloudSigner $cert $jsonAzure]

set crypt [new_CkCrypt2]

set success [CkCrypt2_SetSigningCert $crypt $cert]
if {$success == 0} then {
    puts [CkCrypt2_lastErrorText $crypt]
    delete_CkCert $cert
    delete_CkJsonObject $jsonAzure
    delete_CkCrypt2 $crypt
    exit
}

# The CadesEnabled property applies to all methods that create 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 signedAttrs [new_CkJsonObject]

CkJsonObject_UpdateInt $signedAttrs "contentType" 1
CkJsonObject_UpdateInt $signedAttrs "signingTime" 1
CkJsonObject_UpdateInt $signedAttrs "messageDigest" 1
CkJsonObject_UpdateInt $signedAttrs "signingCertificateV2" 1
CkCrypt2_put_SigningAttributes $crypt [CkJsonObject_emit $signedAttrs]

# You can sign any type of file..
set inputXmlPath "qa_data/e-Invoice.xml"
set outputP7mPath "qa_output/signed.p7m"

# Create the CAdES-BES attached signature, which contains the original data.
# Chilkat will build the .p7m locally, but will (internally) use ARSS
# to do the RSA signing remotely.
set success [CkCrypt2_CreateP7M $crypt $inputXmlPath $outputP7mPath]
if {$success == 0} then {
    puts [CkCrypt2_lastErrorText $crypt]
    delete_CkCert $cert
    delete_CkJsonObject $jsonAzure
    delete_CkCrypt2 $crypt
    delete_CkJsonObject $signedAttrs
    exit
}

puts "Success."

delete_CkCert $cert
delete_CkJsonObject $jsonAzure
delete_CkCrypt2 $crypt
delete_CkJsonObject $signedAttrs