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Duplicate OpensSSL Command that Decrypts Binary DER

See more OpenSSL Examples

This example duplicates the following:

openssl smime -decrypt -in INPUT_FILE -inform der -binary -out OUTPUT_FILE -recip PEM_CERT_AND_KEY -passin pass:PRIVKEY_PASSWORD

Note: Although "smime" is the OpenSSL command, we're not really dealing with S/MIME. The arguments "-inform der -binary" indicate that the input is simply the binary DER (i.e. the PKCS7 binary encrypted object). The output can be any type of file (whatever was encrypted).

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Local $bSuccess = False

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

$oCrypt.CryptAlgorithm = "pki"

$oPem = ObjCreate("Chilkat.Pem")
$bSuccess = $oPem.LoadPemFile("qa_data/pem/myPem.pem","password")
If ($bSuccess = False) Then
    ConsoleWrite($oPem.LastErrorText & @CRLF)
    Exit
EndIf

$oPrivkey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPem.PrivateKeyAt(0,$oPrivkey)
If ($bSuccess = False) Then
    ConsoleWrite($oPem.LastErrorText & @CRLF)
    Exit
EndIf

$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oPem.CertAt(0,$oCert)
If ($bSuccess = False) Then
    ConsoleWrite($oPem.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oCrypt.SetDecryptCert2($oCert,$oPrivkey)
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oCrypt.CkDecryptFile("qa_data/infile.enc","qa_output/outfile.dat")
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Success." & @CRLF)