Classic ASP

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

_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.

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set crypt = Server.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 = Server.CreateObject("Chilkat.CertStore")
success = certStore.LoadPfxFile(pfxFilename,pfxPassword)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( certStore.LastErrorText) & "</pre>"
    Response.End
End If

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

set cert = Server.CreateObject("Chilkat.Cert")
success = certStore.FindCert(jsonCN,cert)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Failed to find certificate by subject common name.") & "</pre>"
    Response.End
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
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"
    Response.End
End If

success = crypt.VerifyP7S(inFile,sigFile)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Success!") & "</pre>"

%>
</body>
</html>