VBScript

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

See more OpenSSL Examples

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

VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

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 = CreateObject("Chilkat.Cert")
success = cert.LoadFromFile("qa_data/openssl/EE.cer")
If (success = 0) Then
    outFile.WriteLine(cert.LastErrorText)
    WScript.Quit
End If

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

set privKey = CreateObject("Chilkat.PrivateKey")
success = privKey.LoadAnyFormat(bd,"")
If (success = 0) Then
    outFile.WriteLine(privKey.LastErrorText)
    WScript.Quit
End If

set crypt = CreateObject("Chilkat.Crypt2")
success = crypt.SetDecryptCert2(cert,privKey)
If (success = 0) Then
    outFile.WriteLine(crypt.LastErrorText)
    WScript.Quit
End If

crypt.CryptAlgorithm = "PKI"
success = crypt.CkDecryptFile("qa_data/openssl/hello.txt.enc","qa_output/hello.txt")
If (success = 0) Then
    outFile.WriteLine(crypt.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("Success.")

outFile.Close