(Visual FoxPro) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loChilkatGlob
LOCAL lnSuccess
LOCAL loPem
LOCAL lcPassword
LOCAL lcPemContent
LOCAL lnNumPrivateKeys
LOCAL i
LOCAL loPrivKey
LOCAL lnNumCerts
LOCAL loCert

* Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
* by calling UnlockBundle.  It requires a Bundle unlock code.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Global')
loChilkatGlob = CreateObject('Chilkat.Global')
lnSuccess = loChilkatGlob.UnlockBundle("Anything for 30-day trial.")
IF (lnSuccess <> 1) THEN
    ? loChilkatGlob.LastErrorText
    RELEASE loChilkatGlob
    CANCEL
ENDIF

* The Chilkat PEM class was introduced in v9.5.0.49.  
* It requires the bundle to be unlocked, as shown above.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Pem')
loPem = CreateObject('Chilkat.Pem')

* Load the PEM from a file.
* If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
lcPassword = "myPassword"
lnSuccess = loPem.LoadPemFile("../myPemFiles/myPem.pem",lcPassword)
IF (lnSuccess <> 1) THEN
    ? loPem.LastErrorText
    RELEASE loChilkatGlob
    RELEASE loPem
    CANCEL
ENDIF

* Note: If the app already has the PEM pre-loaded in a string variable, then load it 
* by calling LoadPem instead.  
lcPemContent = "... the PEM contents ..."
lnSuccess = loPem.LoadPem(lcPemContent,lcPassword)
* Check for success as before..

* Iterate over the private keys.
lnNumPrivateKeys = loPem.NumPrivateKeys
i = 0

DO WHILE i < lnNumPrivateKeys

    loPrivKey = loPem.GetPrivateKey(i)
    ? "Private Key " + STR(i) + " is " + STR(loPrivKey.BitLength) + " in length"
    RELEASE loPrivKey

    i = i + 1
ENDDO

* Iterate over the certificates.
lnNumCerts = loPem.NumCerts
i = 0

DO WHILE i < lnNumCerts

    loCert = loPem.GetCert(i)
    ? "Certificate " + STR(i) + " : " + loCert.SubjectDN
    RELEASE loCert

    i = i + 1
ENDDO

RELEASE loChilkatGlob
RELEASE loPem