Classic ASP

Duplicate openssl smime -decrypt -in some_file.dat.enc -binary -inform DER -inkey private.key -out some_file.dat

Demonstrates how to decrypt binary DER that was encrypted using the following openssl command:

openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crt

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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.

' Duplicates the following openssl command:
' openssl smime -decrypt -in hello.txt.enc -binary -inform DER -inkey private.key -out hello.txt

set cert = Server.CreateObject("Chilkat.Cert")
success = cert.LoadFromFile("qa_data/openssl/EE.cer")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>"
    Response.End
End If

set bd = Server.CreateObject("Chilkat.BinData")
success = bd.LoadFile("qa_data/openssl/EE.key")
' Assuming success..

set privKey = Server.CreateObject("Chilkat.PrivateKey")
success = privKey.LoadAnyFormat(bd,"")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( privKey.LastErrorText) & "</pre>"
    Response.End
End If

set crypt = Server.CreateObject("Chilkat.Crypt2")
success = crypt.SetDecryptCert2(cert,privKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>"
    Response.End
End If

crypt.CryptAlgorithm = "PKI"
success = crypt.CkDecryptFile("qa_data/openssl/hello.txt.enc","qa_output/hello.txt")
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>