(Ruby) Find Certificate for Email Address in Current-User Certificate Store (Windows-Only)

This is a Windows-only example to find a certificate for a given email address in the current-user certificate store (located in the Windows Registry).

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

require 'chilkat'

# This is a Windows-only example because it lists the certificates
# stored in the Windows Current User Certificate Store located in the
# Windows Registry.

certStore = Chilkat::CkCertStore.new()

readOnly = true
success = certStore.OpenCurrentUserStore(readOnly)
if (success == false)
    print certStore.lastErrorText() + "\n";
    exit
end

emailAddr = "support@chilkatsoft.com"
# cert is a CkCert
cert = certStore.FindCertBySubjectE(emailAddr)
if (certStore.get_LastMethodSuccess() != true)
    print "No certificate found for " + emailAddr + "\n";
    exit
end

print "Found: " + cert.subjectDN() + "\n";

# It should be case-insensitive, however it was found not to be.
# The case-insensitive search is fixed starting in Chilkat v9.5.0.65.
emailAddr = "SUPPORT@chilkatsoft.com"
# cert is a CkCert
cert = certStore.FindCertBySubjectE(emailAddr)
if (certStore.get_LastMethodSuccess() != true)
    print "No certificate found for " + emailAddr + "\n";
    exit
end

print "Found: " + cert.subjectDN() + "\n";