Class: EzCrypto::TrustStore

Inherits:
Object show all
Defined in:
lib/extensions/ezcrypto/ezcrypto/ezsig.rb

Overview

Wraps around the OpenSSL trust store. This allows you to decide which certificates you trust.

You can either point it at a path which contains a OpenSSL trust store (see OpenSSL for more) or build it up manually.

For a certificate to verify you need the issuer and the issuers issuers certs added to the Trust store.

NOTE: Currently this does not support CRL's or OCSP. We may add support for this later.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*paths) ⇒ TrustStore

Create trust store with an optional list of paths of openssl trust stores.



504
505
506
507
508
 
# File 'lib/extensions/ezcrypto/ezcrypto/ezsig.rb', line 504

def initialize(*paths)
  @store=OpenSSL::X509::Store.new
#      @store.set_default_path paths.shift if paths.length>0
  paths.each {|path| @store.add_path path}
end

Class Method Details

.default_trusted ⇒ Object

Create a trust store of normally trusted root certificates as found in a browser. Extracted from Safari.



487
488
489
 
# File 'lib/extensions/ezcrypto/ezcrypto/ezsig.rb', line 487

def self.default_trusted
  load_from_file(File.dirname(__FILE__) + "/trusted.pem")
end

.load_from_file(file) ⇒ Object

Create a trust store from a list of certificates in a pem file.

These certificates should just be listed one after each other.



494
495
496
497
498
499
500
 
# File 'lib/extensions/ezcrypto/ezcrypto/ezsig.rb', line 494

def self.load_from_file(file)
  store=TrustStore.new
  EzCrypto::Verifier.load_all_from_file(file).each do |cert|
    store.add cert
  end
  store
end

Instance Method Details

#add(obj) ⇒ Object

Add either a EzCrypto::Certificate or a OpenSSL::X509::Cert object to the TrustStore. This should be a trusted certificate such as a CA’s issuer certificate.



513
514
515
516
517
518
519
520
521
 
# File 'lib/extensions/ezcrypto/ezcrypto/ezsig.rb', line 513

def add(obj)
  if obj.kind_of?(EzCrypto::Certificate)
    @store.add_cert obj.cert
  elsif obj.kind_of?(OpenSSL::X509::Certificate)
    @store.add_cert obj
  else 
    raise "unsupported object type"
  end
end

#verify(cert) ⇒ Object

Returns true if either the EzCrypto::Certificate or OpenSSL::X509::Cert object is verified using issuer certificates in the trust store.



525
526
527
528
529
530
531
532
533
 
# File 'lib/extensions/ezcrypto/ezcrypto/ezsig.rb', line 525

def verify(cert)
  if cert.kind_of?(EzCrypto::Certificate)
    @store.verify cert.cert
  elsif cert.kind_of?(OpenSSL::X509::Certificate)
    @store.verify cert
  else 
    false
  end
end