(Ruby) Get Issuer Certificate Information

See more Certificates Examples

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate.

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.LoadFromFile("qa_data/certs/sample.cer")
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

# Get issuer information:

# -----------------------------------------------------------------------
# (Not all subject fields may exist depending on the issuer certificate.)
# -----------------------------------------------------------------------

# Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
print "DN: " + cert.issuerDN() + "\n";

# Common Subject parts:
# Issuer Common Name
print "CN: " + cert.issuerCN() + "\n";

# Issuer Country
print "C: " + cert.issuerC() + "\n";

# Issuer Email address
print "E: " + cert.issuerE() + "\n";

# Issuer Locality
print "L: " + cert.issuerL() + "\n";

# Issuer Organization
print "O: " + cert.issuerO() + "\n";

# Issuer Organizational Unit
print "OU: " + cert.issuerOU() + "\n";

# Issuer State
print "S: " + cert.issuerS() + "\n";