Create Detached Signature File

Creates and verifies a detached signature.

Download Chilkat Crypt ActiveX

Dim crypt As New ChilkatCrypt2

'  Any string argument automatically begins the 30-day trial.
Dim success As Long
success = crypt.UnlockComponent("30-day trial")
If (success <> 1) Then
    MsgBox "Crypt component unlock failed"
    Exit Sub
End If

Dim cert As New ChilkatCert
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 = 1) 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 = 1) Then
    MsgBox "Success!"
End If

MsgBox crypt.LastErrorText