Visual FoxPro

Add a PFX File as a Decryption Source

Loads a CMS/PKCS #7 encrypted S/MIME message and decrypts it back to the original MIME content.

AddPfxSourceFile registers a PFX/P12 file as a source of certificates and private keys used by subsequent decryption operations.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background. Multiple PFX sources can be added so that a single Mime object is able to decrypt messages addressed to any of several identities. Chilkat chooses the matching key at decryption time.

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Visual FoxPro

LOCAL lnSuccess
LOCAL loMime
LOCAL lcPfxPassword

lnSuccess = 0

loMime = CreateObject('Chilkat.Mime')
lnSuccess = loMime.LoadMimeFile("qa_data/encrypted.eml")
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    CANCEL
ENDIF

*  Add a PFX/P12 file as a source of certificates and private keys for later decryption.  The 1st
*  argument is the PFX path and the 2nd is its password (from a secure source).  Call once per
*  source file.
lcPfxPassword = "myPfxPassword"
lnSuccess = loMime.AddPfxSourceFile("qa_data/recipient.pfx",lcPfxPassword)
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    CANCEL
ENDIF

*  Decrypt using the keys from the added PFX source(s).
lnSuccess = loMime.Decrypt()
IF (lnSuccess = 0) THEN
    ? loMime.LastErrorText
    RELEASE loMime
    CANCEL
ENDIF

? "Decrypted."

RELEASE loMime