(Ruby) PKCS11 Find All Certificates on Smart Card or USB Token

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Sample code showing how to examine all the certificates on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.88 or later.

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

require 'chilkat'

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

# Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

pkcs11 = Chilkat::CkPkcs11.new()

# Set your shared lib path -- either a full path to the DLL, .so, or .dylib,
# or just the filename if the driver is in a location that can be automatically found. (Such as in C:\Windows\System32)
pkcs11.put_SharedLibPath("aetpkss1.dll")

success = pkcs11.Initialize()
if (success == false)
    print pkcs11.lastErrorText() + "\n";
    exit
end

# Pass -1 for the slotID to open a session on the first non-empty slot.
slotID = -1

# Open a session.
readWrite = true
success = pkcs11.OpenSession(slotID,readWrite)
if (success == false)
    print pkcs11.lastErrorText() + "\n";
    exit
end

# Make it an authenticated session by calling Login.
# 
# If we don't authenticate, then we won't be able to see the private keys, and thus
# we won't know which certificates have an associated private key stored on the smart card.

# The smart card PIN is passed to the Login method.
# userType 1 indicates a "Normal User".
userType = 1
pin = "0000"
success = pkcs11.Login(userType,pin)
if (success == false)
    print pkcs11.lastErrorText() + "\n";
    success = pkcs11.CloseSession()
    exit
end

# Call FindAllCerts to find all certificates on the smart card or USB token.
success = pkcs11.FindAllCerts()
if (success == false)
    print pkcs11.lastErrorText() + "\n";
    success = pkcs11.CloseSession()
    exit
end

# The NumCerts property is set by FindAllCerts.
numCerts = pkcs11.get_NumCerts()
print "Number of certs: " + numCerts.to_s() + "\n";

cert = Chilkat::CkCert.new()
i = 0
while i < numCerts
    pkcs11.GetCert(i,cert)
    privateKeyNote = ""
    if (cert.HasPrivateKey() == true)
        privateKeyNote = "(has private key)"
    end

    print i.to_s() + ": " + privateKeyNote + " " + cert.subjectDN() + "\n";
    print i.to_s() + ": issuer: " + cert.issuerDN() + "\n";
    print "----" + "\n";
    i = i + 1
end

# Revert to an unauthenticated session by calling Logout.
success = pkcs11.Logout()
if (success == false)
    print pkcs11.lastErrorText() + "\n";
    success = pkcs11.CloseSession()
    exit
end

# When finished, close the session.
# It is important to close the session (memory leaks will occur if the session is not properly closed).
success = pkcs11.CloseSession()
if (success == false)
    print pkcs11.lastErrorText() + "\n";
    exit
end

print "Success." + "\n";