(Ruby) Iterate Keys and Certs in PEM

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

Note: This example requires Chilkat v11.0.0 or greater.

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

require 'chilkat'

success = false

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

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 == false)
    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

privKey = Chilkat::CkPrivateKey.new()
while i < numPrivateKeys
    pem.PrivateKeyAt(i,privKey)
    print "Private Key " + i.to_s() + " is " + privKey.get_BitLength().to_s() + " in length" + "\n";
    i = i + 1
end

# Iterate over the certificates.
cert = Chilkat::CkCert.new()
numCerts = pem.get_NumCerts()
i = 0
while i < numCerts
    pem.CertAt(i,cert)
    print "Certificate " + i.to_s() + " : " + cert.subjectDN() + "\n";
    i = i + 1
end