store expiry with cert fingerprints

We used to store the creation date but this way it's easier to query for non expired certs

1 files changed, 5 insertions, 1 deletions

diff --git a/app/models/client_certificate.rb b/app/models/client_certificate.rb
index d5bb1e0..6b57985 100644
--- a/app/models/client_certificate.rb
+++ b/app/models/client_certificate.rb
@@ -25,7 +25,7 @@ class ClientCertificate
 
     # set expiration
     cert.not_before = last_month
-    cert.not_after = months_from_yesterday(APP_CONFIG[:client_cert_lifespan])
+    cert.not_after = expiry
 
     # generate key
     cert.serial_number.number = cert_serial_number
@@ -47,6 +47,10 @@ class ClientCertificate
     OpenSSL::Digest::SHA1.hexdigest(openssl_cert.to_der).scan(/../).join(':')
   end
 
+  def expiry
+    @expiry ||= months_from_yesterday(APP_CONFIG[:client_cert_lifespan])
+  end
+
   private
 
   def openssl_cert