VBScript

Sign a File to Create a .p7s (Detached Signature)

See more Encryption Examples

_LANGUAGE_ example to create a detached signature file (.p7s) for any type file. The signature can be verified by calling VerifyP7S and passing the original filename and the .p7s filename. VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

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

set crypt = CreateObject("Chilkat.Crypt2")

' Use a digital certificate and private key from a PFX file (.pfx or .p12).
signingCertSubject = "Acme Inc"
pfxFilename = "/Users/chilkat/testData/pfx/acme.pfx"
pfxPassword = "test123"

set certStore = CreateObject("Chilkat.CertStore")
success = certStore.LoadPfxFile(pfxFilename,pfxPassword)
If (success <> 1) Then
    outFile.WriteLine(certStore.LastErrorText)
    WScript.Quit
End If

set jsonCN = CreateObject("Chilkat.JsonObject")
success = jsonCN.UpdateString("CN",signingCertSubject)

set cert = CreateObject("Chilkat.Cert")
success = certStore.FindCert(jsonCN,cert)
If (success = 0) Then
    outFile.WriteLine("Failed to find certificate by subject common name.")
    WScript.Quit
End If

' Tell the crypt component to use this cert.
success = crypt.SetSigningCert(cert)

' We can sign any type of file, creating a .p7s as output:
inFile = "/Users/chilkat/testData/pdf/sample.pdf"
sigFile = "/Users/chilkat/testData/p7s/sample.p7s"

success = crypt.CreateP7S(inFile,sigFile)
If (success = 0) Then
    outFile.WriteLine(crypt.LastErrorText)
    WScript.Quit
End If

success = crypt.VerifyP7S(inFile,sigFile)
If (success = 0) Then
    outFile.WriteLine(crypt.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("Success!")

outFile.Close