(Ruby) Iterate Keys and Certs in PEM

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require '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.new()
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
if (success != true)
    print chilkatGlob.lastErrorText() + "\n";
    exit
end

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

# 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() + "\n";
    exit
end

# 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 " + i.to_s() + " is " + privKey.get_BitLength().to_s() + " in length" + "\n";

    i = i + 1
end

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

while i < numCerts

    # cert is a CkCert
    cert = pem.GetCert(i)
    print "Certificate " + i.to_s() + " : " + cert.subjectDN() + "\n";

    i = i + 1
end