Visual FoxPro

Enumerate Private Keys in a PFX

Demonstrates Pfx.PrivateKeyAt, which copies the private key at a zero-based index into a PrivateKey object. The example enumerates all private keys in the PFX.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Background. Valid indexes are less than NumPrivateKeys. Each retrieved key is an independent copy that can be inspected or used separately.

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Visual FoxPro

LOCAL lnSuccess
LOCAL loPfx
LOCAL lcPassword
LOCAL lnNumKeys
LOCAL loPrivKey
LOCAL i

lnSuccess = 0

loPfx = CreateObject('Chilkat.Pfx')

*  The file path is relative to the application's current working directory.  An absolute path
*  may also be used.  Supply the path appropriate to your own environment.
*  The PFX password should come from a secure source rather than being hard-coded.
lcPassword = "myPfxPassword"
lnSuccess = loPfx.LoadPfxFile("qa_data/identity.pfx",lcPassword)
IF (lnSuccess = 0) THEN
    ? loPfx.LastErrorText
    RELEASE loPfx
    CANCEL
ENDIF

*  Enumerate the private keys in the PFX by zero-based index.  Valid indexes are less than
*  NumPrivateKeys.
lnNumKeys = loPfx.NumPrivateKeys
loPrivKey = CreateObject('Chilkat.PrivateKey')

FOR i = 0 TO lnNumKeys - 1
    lnSuccess = loPfx.PrivateKeyAt(i,loPrivKey)
    IF (lnSuccess = 0) THEN
        ? loPfx.LastErrorText
        RELEASE loPfx
        RELEASE loPrivKey
        CANCEL
    ENDIF

    ? "Private key " + STR(i) + ": " + loPrivKey.KeyType + " (" + STR(loPrivKey.BitLength) + " bits)"
NEXT

RELEASE loPfx
RELEASE loPrivKey