diff --git a/db/migrate/20150522164020_update_certs.rb b/db/migrate/20150522164020_update_certs.rb
new file mode 100644
index 000000000..5b492b271
--- /dev/null
+++ b/db/migrate/20150522164020_update_certs.rb
@@ -0,0 +1,15 @@
+class UpdateCerts < ActiveRecord::Migration
+  def change
+    Certificate.all.each do |x|
+      if x.crt.present? && x.csr.present?
+        x.interface = Certificate::REGISTRAR
+        x.md5 = OpenSSL::Digest::MD5.new(x.parsed_crt.to_der).to_s
+      elsif x.crt.present? && x.csr.blank?
+        x.interface = Certificate::API
+        x.md5 = OpenSSL::Digest::MD5.new(x.parsed_crt.to_der).to_s
+      elsif x.crt.blank? && x.csr.present?
+        x.interface = Certificate::REGISTRAR
+      end
+    end
+  end
+end