(Lianja) Create CAdES-BES .p7m using Smart Card or USB Token

Demonstrates how to create a CAdES BES invoice.xml.p7m using a certificate stored on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.77 and at the time of this writing is restricted to the Windows operating system.

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// Note: Requires Chilkat v9.5.0.77 or greater.

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loCrypt = createobject("CkCrypt2")

// Use a certificate on a smartcard or USB token.
loCert = createobject("CkCert")
// Load the certificate on the smartcard currently in the reader (or on the USB token).
// Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
// See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
llSuccess = loCert.LoadFromSmartcard("")
if (llSuccess <> .T.) then
    ? loCert.LastErrorText
    release loCrypt
    release loCert
    return
endif

// Provide the smartcard PIN.
// If the PIN is not explicitly provided here, the Windows OS should
// display a dialog for the PIN.
loCert.SmartCardPin = "000000"

// Provide the certificate for signing.
llSuccess = loCrypt.SetSigningCert(loCert)
if (llSuccess <> .T.) then
    ? loCrypt.LastErrorText
    release loCrypt
    release loCert
    return
endif

// Indicate that SHA-256 should be used.
loCrypt.HashAlgorithm = "sha256"

// Specify the signed attributes to be included.
// (This is what makes it CAdES-BES compliant.)
loJsonSignedAttrs = createobject("CkJsonObject")
loJsonSignedAttrs.UpdateInt("contentType",1)
loJsonSignedAttrs.UpdateInt("signingTime",1)
loJsonSignedAttrs.UpdateInt("messageDigest",1)
loJsonSignedAttrs.UpdateInt("signingCertificateV2",1)
loCrypt.SigningAttributes = loJsonSignedAttrs.Emit()

lcInFile = "qa_data/xml/IT01234567890_11002.xml"
lcSigFile = "qa_output/IT01234567890_11002.xml.p7m"

// Create the CAdES-BES signature, which contains the original data.
llSuccess = loCrypt.CreateP7M(lcInFile,lcSigFile)
if (llSuccess = .F.) then
    ? loCrypt.LastErrorText
    release loCrypt
    release loCert
    release loJsonSignedAttrs
    return
endif

? "Success."


release loCrypt
release loCert
release loJsonSignedAttrs