PKCS7 Decrypt Using .pfx or .p12 Data

Demonstrates how to decrypt MIME using a specifc PFX file (.pfx or .p12) for the source of certificate(s) and private key(s).

Download Chilkat FileAccess ActiveX (freeware)

Download Chilkat MIME ActiveX

LOCAL loMime
LOCAL lnSuccess
LOCAL loPfxData
LOCAL loFac
LOCAL lcPfxPassword

loMime = CreateObject('Chilkat.Mime')

lnSuccess = loMime.UnlockComponent("Anything for 30-day trial.")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    QUIT
ENDIF

*  Load the MIME
lnSuccess = loMime.LoadMimeFile("encrypted.mim")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    QUIT
ENDIF

loFac = CreateObject('Chilkat.FileAccess')
loPfxData = loFac.ReadEntireFile("pfxStore/myPkcs12.p12")

lcPfxPassword = "myPassword"
lnSuccess = loMime.DecryptUsingPfxData(loPfxData,lcPfxPassword)
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    QUIT
ENDIF

*  Display the decrypted MIME:
? loMime.GetMime()

*  Note: The MIME to be decrypted should look something like this
*  when viewed in a text editor:
*  (Note that the Content-Type is application/x-pkcs7-mime)
*  
Content-Disposition: attachment; filename="smime.p7m"
Content-Transfer-Encoding: base64
Content-Type: application/x-pkcs7-mime;
 name="smime.p7m"

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