Create Detached Signature File

Download: Chilkat .NET Assemblies

Creates and verifies a detached signature.

Dim crypt As New Chilkat.Crypt2()

'  Any string argument automatically begins the 30-day trial.
Dim success As Boolean
success = crypt.UnlockComponent("30-day trial")
If (success <> true) Then
    MsgBox("Crypt component unlock failed")
    Exit Sub
End If


Dim cert As New Chilkat.Cert()
cert.LoadByCommonName("Chilkat Software, Inc.")

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

'  We can sign any type of file, creating a .sig as output:
success = crypt.CreateDetachedSignature("test.pdf","test.sig")
If (success = true) Then
    MsgBox("Success!")
End If

MsgBox(crypt.LastErrorText)

'  Verify and restore the original file:
crypt.SetVerifyCert(cert)

success = crypt.VerifyDetachedSignature("test.pdf","test.sig")
If (success = true) Then
    MsgBox("Success!")
End If

MsgBox(crypt.LastErrorText)