diff --git a/app/api/repp/api.rb b/app/api/repp/api.rb
index e5bda46f5..af6864cfa 100644
--- a/app/api/repp/api.rb
+++ b/app/api/repp/api.rb
@@ -30,7 +30,8 @@ module Repp
         webclient_cert_name = ENV['webclient_cert_common_name'] || 'webclient'
         error! "Webclient #{message} #{webclient_cert_name}", 401 if webclient_cert_name != request_name
       else
-        unless @current_user.api_pki_ok?(request.env['HTTP_SSL_CLIENT_CERT'], request.env['HTTP_SSL_CLIENT_S_DN_CN'])
+        unless @current_user.pki_ok?(request.env['HTTP_SSL_CLIENT_CERT'],
+                                     request.env['HTTP_SSL_CLIENT_S_DN_CN'])
           error! "#{message} #{@current_user.username}", 401
         end
       end
diff --git a/app/controllers/epp/sessions_controller.rb b/app/controllers/epp/sessions_controller.rb
index ef8f125ee..cf24feb33 100644
--- a/app/controllers/epp/sessions_controller.rb
+++ b/app/controllers/epp/sessions_controller.rb
@@ -26,7 +26,8 @@ module Epp
       end
 
       if !Rails.env.development? && (!webclient_request && @api_user)
-        unless @api_user.api_pki_ok?(request.env['HTTP_SSL_CLIENT_CERT'], request.env['HTTP_SSL_CLIENT_S_DN_CN'])
+        unless @api_user.pki_ok?(request.env['HTTP_SSL_CLIENT_CERT'],
+                                 request.env['HTTP_SSL_CLIENT_S_DN_CN'])
           epp_errors << {
             msg: 'Authentication error; server closing connection (certificate is not valid)',
             code: '2501'
diff --git a/app/controllers/registrar/sessions_controller.rb b/app/controllers/registrar/sessions_controller.rb
index 2ca8f5cc7..5bebe5619 100644
--- a/app/controllers/registrar/sessions_controller.rb
+++ b/app/controllers/registrar/sessions_controller.rb
@@ -31,7 +31,8 @@ class Registrar
       end
 
       if @depp_user.pki
-        unless @api_user.registrar_pki_ok?(request.env['HTTP_SSL_CLIENT_CERT'], request.env['HTTP_SSL_CLIENT_S_DN_CN'])
+        unless @api_user.pki_ok?(request.env['HTTP_SSL_CLIENT_CERT'],
+                                 request.env['HTTP_SSL_CLIENT_S_DN_CN'], api: false)
           @depp_user.errors.add(:base, :invalid_cert)
         end
       end
@@ -205,4 +206,4 @@ class Registrar
       redirect_to new_registrar_user_session_url, alert: @depp_user.errors.full_messages.first
     end
   end
-end
\ No newline at end of file
+end
diff --git a/app/models/api_user.rb b/app/models/api_user.rb
index 3dc240727..b5efa7235 100644
--- a/app/models/api_user.rb
+++ b/app/models/api_user.rb
@@ -64,24 +64,14 @@ class ApiUser < User
     registrar.notifications.unread
   end
 
-  def registrar_pki_ok?(crt, cn)
-    return false if crt.blank? || cn.blank?
-    crt = crt.split(' ').join("\n")
-    crt.gsub!("-----BEGIN\nCERTIFICATE-----\n", "-----BEGIN CERTIFICATE-----\n")
-    crt.gsub!("\n-----END\nCERTIFICATE-----", "\n-----END CERTIFICATE-----")
-    cert = OpenSSL::X509::Certificate.new(crt)
-    md5 = OpenSSL::Digest::MD5.new(cert.to_der).to_s
-    certificates.registrar.exists?(md5: md5, common_name: cn)
-  end
+  def pki_ok?(crt, com, api: true)
+    return false if crt.blank? || com.blank?
 
-  def api_pki_ok?(crt, cn)
-    return false if crt.blank? || cn.blank?
-    crt = crt.split(' ').join("\n")
-    crt.gsub!("-----BEGIN\nCERTIFICATE-----\n", "-----BEGIN CERTIFICATE-----\n")
-    crt.gsub!("\n-----END\nCERTIFICATE-----", "\n-----END CERTIFICATE-----")
-    cert = OpenSSL::X509::Certificate.new(crt)
+    origin = api ? certificates.api : certificates.registrar
+    cert = machine_readable_certificate(crt)
     md5 = OpenSSL::Digest::MD5.new(cert.to_der).to_s
-    certificates.api.exists?(md5: md5, common_name: cn)
+
+    origin.exists?(md5: md5, common_name: com, revoked: false)
   end
 
   def linked_users
@@ -93,4 +83,14 @@ class ApiUser < User
   def linked_with?(another_api_user)
     another_api_user.identity_code == self.identity_code
   end
+
+  private
+
+  def machine_readable_certificate(cert)
+    cert = cert.split(' ').join("\n")
+    cert.gsub!("-----BEGIN\nCERTIFICATE-----\n", "-----BEGIN CERTIFICATE-----\n")
+    cert.gsub!("\n-----END\nCERTIFICATE-----", "\n-----END CERTIFICATE-----")
+
+    OpenSSL::X509::Certificate.new(cert)
+  end
 end
diff --git a/app/models/certificate.rb b/app/models/certificate.rb
index 5259403c2..d2428365a 100644
--- a/app/models/certificate.rb
+++ b/app/models/certificate.rb
@@ -32,20 +32,21 @@ class Certificate < ApplicationRecord
       errors.add(:base, I18n.t(:invalid_csr_or_crt))
   end
 
-  before_create :parse_metadata
-  def parse_metadata
-    if crt
-      pc = parsed_crt.try(:subject).try(:to_s) || ''
-      cn = pc.scan(/\/CN=(.+)/).flatten.first
-      self.common_name = cn.split('/').first
-      self.md5 = OpenSSL::Digest::MD5.new(parsed_crt.to_der).to_s
-      self.interface = API
-    elsif csr
-      pc = parsed_csr.try(:subject).try(:to_s) || ''
-      cn = pc.scan(/\/CN=(.+)/).flatten.first
-      self.common_name = cn.split('/').first
-      self.interface = REGISTRAR
-    end
+  validate :assign_metadata, on: :create
+
+  def assign_metadata
+    origin = crt ? parsed_crt : parsed_csr
+    parse_metadata(origin)
+  rescue NoMethodError
+    errors.add(:base, I18n.t(:invalid_csr_or_crt))
+  end
+
+  def parse_metadata(origin)
+    pc = origin.subject.to_s
+    cn = pc.scan(%r{\/CN=(.+)}).flatten.first
+    self.common_name = cn.split('/').first
+    self.md5 = OpenSSL::Digest::MD5.new(origin.to_der).to_s if crt
+    self.interface = crt ? API : REGISTRAR
   end
 
   def parsed_crt
@@ -116,6 +117,7 @@ class Certificate < ApplicationRecord
       -revoke #{crt_file.path} -key '#{ENV['ca_key_password']}' -batch")
 
     if err.match(/Data Base Updated/) || err.match(/ERROR:Already revoked/)
+      self.revoked = true
       save!
       @cached_status = REVOKED
     else
diff --git a/db/migrate/20200505103316_add_revoked_to_certificate.rb b/db/migrate/20200505103316_add_revoked_to_certificate.rb
new file mode 100644
index 000000000..a52c7d14c
--- /dev/null
+++ b/db/migrate/20200505103316_add_revoked_to_certificate.rb
@@ -0,0 +1,5 @@
+class AddRevokedToCertificate < ActiveRecord::Migration[5.2]
+  def change
+    add_column :certificates, :revoked, :boolean, null: false, default: false
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index 511f38d2e..e649e5bc1 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -477,7 +477,8 @@ CREATE TABLE public.certificates (
     updated_at timestamp without time zone,
     common_name character varying,
     md5 character varying,
-    interface character varying
+    interface character varying,
+    revoked boolean DEFAULT false NOT NULL
 );
 
 
@@ -4465,4 +4466,6 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20200203143458'),
 ('20200204103125'),
 ('20200311114649'),
-('20200417075720');
+('20200417075720'),
+('20200505103316');
+
diff --git a/test/fixtures/certificates.yml b/test/fixtures/certificates.yml
new file mode 100644
index 000000000..4799743ff
--- /dev/null
+++ b/test/fixtures/certificates.yml
@@ -0,0 +1,14 @@
+api:
+  api_user: api_bestnames
+  common_name: registry.test
+  crt: "-----BEGIN CERTIFICATE-----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\ndL3wXN9BQs0hJA6IZNFyz2F/gSTURrD1zWW2na3ipRzhupW5+98=\n-----END CERTIFICATE-----\n"
+  md5: e6771ed5dc857a1dbcc1e0a36baa1fee
+  interface: api
+  revoked: false
+registrar:
+  api_user: api_bestnames
+  common_name: registry.test
+  crt: "-----BEGIN CERTIFICATE-----\nMIICYjCCAcugAwIBAgIBADANBgkqhkiG9w0BAQ0FADBNMQswCQYDVQQGEwJ1czEO\nMAwGA1UECAwFVGV4YXMxFjAUBgNVBAoMDVJlZ2lzdHJ5IHRlc3QxFjAUBgNVBAMM\nDXJlZ2lzdHJ5LnRlc3QwIBcNMjAwNTA1MTIzNzQxWhgPMjEyMDA0MTExMjM3NDFa\nME0xCzAJBgNVBAYTAnVzMQ4wDAYDVQQIDAVUZXhhczEWMBQGA1UECgwNUmVnaXN0\ncnkgdGVzdDEWMBQGA1UEAwwNcmVnaXN0cnkudGVzdDCBnzANBgkqhkiG9w0BAQEF\nAAOBjQAwgYkCgYEAyn+GCkUJIhdXVBOPrZH+Zj2B/tQfL5TLZwVYZQt38x6GQT+4\n6ndty467IJvKSUlHej7uMpsCzC8Ffmda4cZm16jO1vUb4hXIrmeKP84zLrrUpKag\ngZR4rBDbG2+uL4SzMyy3yeQysYuTiQ4N1i4vdhvkKYPSWIht/QFvuzdFq+0CAwEA\nAaNQME4wHQYDVR0OBBYEFD6B5j6NnMCDBnfbtjBYKBJM7sCRMB8GA1UdIwQYMBaA\nFD6B5j6NnMCDBnfbtjBYKBJM7sCRMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEN\nBQADgYEArtCR6VOabD3nM/KlZTmHMZVT4ntenYlNTM9FS0RatzPmdh4REhykvmZs\nOlBcpoV5tN5Y8bHOVRqY9V2e903QEhQgoccQhbt0Py6uFwfLv+WLKAUbeGnPqK9d\ndL3wXN9BQs0hJA6IZNFyz2F/gSTURrD1zWW2na3ipRzhupW5+98=\n-----END CERTIFICATE-----\n"
+  md5: e6771ed5dc857a1dbcc1e0a36baa1fee
+  interface: registrar
+  revoked: false
diff --git a/test/models/api_user_test.rb b/test/models/api_user_test.rb
index 20d655a9c..ecbff5cbb 100644
--- a/test/models/api_user_test.rb
+++ b/test/models/api_user_test.rb
@@ -63,6 +63,25 @@ class ApiUserTest < ActiveSupport::TestCase
     assert_nil ApiUser.find_by_id_card(id_card)
   end
 
+  def test_verifies_pki_status
+    certificate = certificates(:api)
+
+    assert @user.pki_ok?(certificate.crt, certificate.common_name, api: true)
+    assert_not @user.pki_ok?(certificate.crt, 'invalid-cn', api: true)
+
+    certificate = certificates(:registrar)
+
+    assert @user.pki_ok?(certificate.crt, certificate.common_name, api: false)
+    assert_not @user.pki_ok?(certificate.crt, 'invalid-cn', api: false)
+
+    certificate.update(revoked: true)
+    assert_not @user.pki_ok?(certificate.crt, certificate.common_name, api: false)
+
+    certificate = certificates(:api)
+    certificate.update(revoked: true)
+    assert_not @user.pki_ok?(certificate.crt, certificate.common_name, api: true)
+  end
+
   private
 
   def valid_user