(CkPython) Iterate Keys and Certs in PEM

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

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import sys
import chilkat

# 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.
chilkatGlob = chilkat.CkGlobal()
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
if (success != True):
    print(chilkatGlob.lastErrorText())
    sys.exit()

# The Chilkat PEM class was introduced in v9.5.0.49.  
# It requires the bundle to be unlocked, as shown above.
pem = chilkat.CkPem()

# Load the PEM from a file.
# If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
password = "myPassword"
success = pem.LoadPemFile("../myPemFiles/myPem.pem",password)
if (success != True):
    print(pem.lastErrorText())
    sys.exit()

# Note: If the app already has the PEM pre-loaded in a string variable, then load it 
# by calling LoadPem instead.  
pemContent = "... the PEM contents ..."
success = pem.LoadPem(pemContent,password)
# Check for success as before..

# Iterate over the private keys.
numPrivateKeys = pem.get_NumPrivateKeys()
i = 0

while i < numPrivateKeys :

    # privKey is a CkPrivateKey
    privKey = pem.GetPrivateKey(i)
    print("Private Key " + str(i) + " is " + str(privKey.get_BitLength()) + " in length")

    i = i + 1

# Iterate over the certificates.
numCerts = pem.get_NumCerts()
i = 0

while i < numCerts :

    # cert is a CkCert
    cert = pem.GetCert(i)
    print("Certificate " + str(i) + " : " + cert.subjectDN())

    i = i + 1