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

See more Signing in the Cloud Examples

Demonstrates how to create a CAdES p7m, using Azure Key Vault. The signing of the hash happens in the Cloud on Azure Key Vault. Everything else regarding the creation of CAdES happens locally within Chilkat.

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Variant vCert
    Handle hoCert
    Boolean iSuccess
    Variant vJsonAzure
    Handle hoJsonAzure
    Handle hoCrypt
    Handle hoSignedAttrs
    String sInputXmlPath
    String sOutputP7mPath
    String sTemp1

    // 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).
    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End
    Get ComLoadFromFile Of hoCert "qa_data/certs/myCert.cer" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoCert To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // 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.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonAzure
    If (Not(IsComObjectCreated(hoJsonAzure))) Begin
        Send CreateComObject of hoJsonAzure
    End
    // Set the "service" equal to "azure_keyvault" to tell Chilkat to use Azure Key Vault for signing.
    Get ComUpdateString Of hoJsonAzure "service" "azure_keyvault" To iSuccess
    Get ComUpdateString Of hoJsonAzure "client_id" "APP_ID" To iSuccess
    Get ComUpdateString Of hoJsonAzure "client_secret" "APP_PASSWORD" To iSuccess
    Get ComUpdateString Of hoJsonAzure "tenant_id" "TENANT_ID" To iSuccess
    // In the above screenshot, our vault name is "kvchilkat".  You will use your vault name.
    Get ComUpdateString Of hoJsonAzure "vault_name" "VAULT_NAME" To iSuccess
    // In the above screenshot, our cert name is "ChilkatTest1".  You will use your cert name.
    Get ComUpdateString Of hoJsonAzure "cert_name" "CERT_NAME" To iSuccess
    // In the above screenshot, our cert version is "63b94a23389546ecbc8eb6208a1bef37".  You will use your cert version.
    Get ComUpdateString Of hoJsonAzure "cert_version" "CERT_VERSION" To iSuccess
    Get pvComObject of hoJsonAzure to vJsonAzure
    Get ComSetCloudSigner Of hoCert vJsonAzure To iSuccess

    Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt
    If (Not(IsComObjectCreated(hoCrypt))) Begin
        Send CreateComObject of hoCrypt
    End

    Get pvComObject of hoCert to vCert
    Get ComSetSigningCert Of hoCrypt vCert To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoCrypt To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // The CadesEnabled property applies to all methods that create PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true.
    Set ComCadesEnabled Of hoCrypt To True

    Set ComHashAlgorithm Of hoCrypt To "sha256"

    Get Create (RefClass(cComChilkatJsonObject)) To hoSignedAttrs
    If (Not(IsComObjectCreated(hoSignedAttrs))) Begin
        Send CreateComObject of hoSignedAttrs
    End
    Get ComUpdateInt Of hoSignedAttrs "contentType" 1 To iSuccess
    Get ComUpdateInt Of hoSignedAttrs "signingTime" 1 To iSuccess
    Get ComUpdateInt Of hoSignedAttrs "messageDigest" 1 To iSuccess
    Get ComUpdateInt Of hoSignedAttrs "signingCertificateV2" 1 To iSuccess
    Get ComEmit Of hoSignedAttrs To sTemp1
    Set ComSigningAttributes Of hoCrypt To sTemp1

    // You can sign any type of file..
    Move "qa_data/e-Invoice.xml" To sInputXmlPath
    Move "qa_output/signed.p7m" To sOutputP7mPath

    // 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.
    Get ComCreateP7M Of hoCrypt sInputXmlPath sOutputP7mPath To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoCrypt To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Success."


End_Procedure