1 files changed, 21 insertions, 1 deletions
diff --git a/lib/rubygems/security.rb b/lib/rubygems/security.rb
index 2485729488..bed47ab9f3 100644
--- a/lib/rubygems/security.rb
+++ b/lib/rubygems/security.rb
@@ -5,9 +5,29 @@
 #++
 
 require 'rubygems/exceptions'
-require 'openssl'
 require 'fileutils'
 
+begin
+  require 'openssl'
+rescue LoadError => e
+  raise unless (e.respond_to?(:path) && e.path == 'openssl') ||
+               e.message =~ / -- openssl$/
+
+  module OpenSSL # :nodoc:
+    class Digest # :nodoc:
+      class SHA1 # :nodoc:
+        def name
+          'SHA1'
+        end
+      end
+    end
+    module PKey # :nodoc:
+      class RSA # :nodoc:
+      end
+    end
+  end
+end
+
 ##
 # = Signing gems
 #