(ASP) Extract a File from a .p7m (PKCS7 Signed-Data)

ASP example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file. It can be verified and restored by calling VerifyP7M.

Download Chilkat Crypt ActiveX

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
set crypt = Server.CreateObject("Chilkat.Crypt2")

'  Any string argument automatically begins the 30-day trial.
success = crypt.UnlockComponent("30-day trial")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"

End If

outFile = "/Users/chilkat/testData/pdf/sample.pdf"
inFile = "/Users/chilkat/testData/p7m/sample.pdf.p7m"

'  Verify and restore the original file:
success = crypt.VerifyP7M(inFile,outFile)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"

End If

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