(Ruby) Get Certificate Subject Part by Name or OID

Demonstrates the GetSubjectPart method where a name or OID can be passed.

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

require 'chilkat'

cert = Chilkat::CkCert.new()

success = cert.LoadByCommonName("myCert")
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

# This example demonstrates getting the SERIALNUMBER part of the subject,
# if one such part exists in the cert's subject.
# Not too many certicates include the serial number in the Subject.
# (Chilean issued certificates for SII is one such case where the SERIALNUMBER part exists within the Subject.)
serialNum = cert.getSubjectPart("SERIALNUMBER")
if (cert.get_LastMethodSuccess() == false)
    print "No SERIALNUMBER part exists." + "\n";
    exit
end

print serialNum + "\n";

# We could also get the part by the OID.
# See https://oidref.com/2.5.4.5 for a list of OID's in the 2.5.4.* range..
# The OID for SERIALNUMBER is "2.5.4.5"
serialNum = cert.getSubjectPart("2.5.4.5")
if (cert.get_LastMethodSuccess() == false)
    print "No SERIALNUMBER part exists." + "\n";
    exit
end

print serialNum + "\n";