Visual FoxPro

CAdES BES Detached Signature

See more Encryption Examples

Demonstrates how to create a CAdES BES detached signature file (.p7s). Visual FoxPro

LOCAL lnSuccess
LOCAL loCrypt
LOCAL lcPfxPath
LOCAL lcPfxPassword
LOCAL loCert
LOCAL lcInFile
LOCAL lcSigFile

lnSuccess = 0

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

loCrypt = CreateObject('Chilkat.Crypt2')

*  Use a digital certificate and private key from a PFX file (.pfx or .p12).
lcPfxPath = "/Users/chilkat/testData/pfx/acme.pfx"
lcPfxPassword = "test123"

loCert = CreateObject('Chilkat.Cert')
lnSuccess = loCert.LoadPfxFile(lcPfxPath,lcPfxPassword)
IF (lnSuccess <> 1) THEN
    ? loCert.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    CANCEL
ENDIF

*  Tell the crypt component to use this cert.
lnSuccess = loCrypt.SetSigningCert(loCert)
IF (lnSuccess <> 1) THEN
    ? loCrypt.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    CANCEL
ENDIF

*  The CadesEnabled property applies to all methods that create PKCS7 signatures. 
*  To create a CAdES-BES signature, set this property equal to true. 
loCrypt.CadesEnabled = 1

*  We can sign any type of file, creating a .p7s as output:
lcInFile = "/Users/chilkat/testData/pdf/sample.pdf"
lcSigFile = "/Users/chilkat/testData/p7s/sample.p7s"

*  Create the detached CAdES-BES signature:
lnSuccess = loCrypt.CreateP7S(lcInFile,lcSigFile)
IF (lnSuccess = 0) THEN
    ? loCrypt.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    CANCEL
ENDIF

lnSuccess = loCrypt.VerifyP7S(lcInFile,lcSigFile)
IF (lnSuccess = 0) THEN
    ? loCrypt.LastErrorText
    RELEASE loCrypt
    RELEASE loCert
    CANCEL
ENDIF

? "Success!"

RELEASE loCrypt
RELEASE loCert