(Ruby) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

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

require 'chilkat'

# Note: Not all certificates contain a Subject Alternative Name.
# If it does not, the SubjectAlternativeName property will contain the empty string.

cert = Chilkat::CkCert.new()

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

subjectAltNameXml = cert.subjectAlternativeName()

print subjectAltNameXml + "\n";

# Here's a sample of the subjectAltNameXml:

# <?xml version="1.0" encoding="utf-8"?>
# <SubjectAltName>
#     <name type="oid" oid="2.16.76.1.3.4">...</name>
#     <name type="oid" oid="2.16.76.1.3.2">...</name>
#     <name type="oid" oid="2.16.76.1.3.3">...</name>
#     <name type="oid" oid="2.16.76.1.3.7">...</name>
#     <rfc822Name>...</rfc822Name>
# </SubjectAltName>

# The XML can be parsed like this:

xml = Chilkat::CkXml.new()

xml.LoadXml(subjectAltNameXml)

i = 0
count_i = xml.NumChildrenHavingTag("name")
while i < count_i
    xml.put_I(i)
    oid = xml.chilkatPath("name[i]|(oid)")
    name = xml.getChildContent("name[i]")
    i = i + 1
end
rfc822Name = xml.getChildContent("rfc822Name")