(Visual FoxPro) 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.

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

LOCAL loCrypt
LOCAL loCert
LOCAL lnSuccess
LOCAL loJsonSignedAttrs
LOCAL lcInFile
LOCAL lcSigFile

* 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.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Crypt2')
loCrypt = CreateObject('Chilkat.Crypt2')

* Use a certificate on a smartcard or USB token.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Cert')
loCert = CreateObject('Chilkat.Cert')
* 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.
lnSuccess = loCert.LoadFromSmartcard("")
IF (lnSuccess <> 1) THEN
    ? loCert.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    CANCEL
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.
lnSuccess = loCrypt.SetSigningCert(loCert)
IF (lnSuccess <> 1) THEN
    ? loCrypt.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    CANCEL
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.)
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJsonSignedAttrs = CreateObject('Chilkat.JsonObject')
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.
lnSuccess = loCrypt.CreateP7M(lcInFile,lcSigFile)
IF (lnSuccess = 0) THEN
    ? loCrypt.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    RELEASE loJsonSignedAttrs
    CANCEL
ENDIF

? "Success."

RELEASE loCrypt
RELEASE loCert
RELEASE loJsonSignedAttrs