# Uninitialized constant OpenSSL::Digest::SHA1 **URL:** \ **Category:** IronRuby\ **Created:** [May 1, 2012, 7:04pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-openssl-sha1/219392 "2012-05-01T19:04:17Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Gurdipe\_D](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/b77776/32.png) [@Gurdipe\_D](https://www.ruby-forum.com/u/Gurdipe_D)\ **Post date:** [May 1, 2012, 7:04pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-openssl-sha1/219392/1 "2012-05-01T19:04:17Z")
Trying to create a simple “hello world” application. So far I simply deleted the /public/index.html file and created a home controller. When I try to browse to the page, I get an uninitialized constant OpenSSL::Digest::SHA1 error. Couple of pieces of information. OS is Windows 7 and I am using the Visual Studio as my IDE. I’ve done some googleing, but I haven’t been able to find any articles that describe the error I’m having. I’ve installed OpenSSL using a windows installer and I tried copying ssleay32.dll and libeay32.dll into the IronRuby bin folder, but that did not work. Seems like I must be missing something really basic. Thanks, Craig ---
**Author:** ![Craig\_Thompson](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/97f17d/32.png) [@Craig\_Thompson](https://www.ruby-forum.com/u/Craig_Thompson)\ **Post date:** [May 1, 2012, 11:07pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-openssl-sha1/219392/2 "2012-05-01T23:07:38Z")
Hi there, It seems like you are using some kind of framework/web server - what would that be? Do you use Sinatra or how does is your Ruby web application structured? Best regards, Per ---
**Author:** ![Craig\_Thompson](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/97f17d/32.png) [@Craig\_Thompson](https://www.ruby-forum.com/u/Craig_Thompson)\ **Post date:** [May 2, 2012, 4:33am UTC](https://www.ruby-forum.com/t/uninitialized-constant-openssl-sha1/219392/3 "2012-05-02T04:33:52Z")
OpenSSL in Ruby is implemented in a C Extension. Last I checked, IronRuby can’t load C extensions. I looked into doing a .NET port of OpenSSL for IronRuby, but quickly got lost in the .NET Crypto APIs. This was 2 years ago. – Will G. removed\_email\_address@domain.invalid ---
**Author:** ![Craig\_Thompson](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/97f17d/32.png) [@Craig\_Thompson](https://www.ruby-forum.com/u/Craig_Thompson)\ **Post date:** [May 2, 2012, 2:38pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-openssl-sha1/219392/4 "2012-05-02T14:38:01Z")
Thanks for all the responses. The thing that baffling me is that IronRuby has an install that includes Visual Studio integration. So, it would seem that I should be able to get Hello World to work… I must have some specific “oddity” to my system that is hosing the IronRuby/Rails install. Craig ----- Original Message ----- From: “Will G.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) To: removed\_email\_address@domain.invalid Sent: Tuesday, May 1, 2012 10:32:54 PM Subject: Re: [Ironruby-core] uninitialized constant OpenSSL::Digest::SHA1 OpenSSL in Ruby is implemented in a C Extension. Last I checked, IronRuby can’t load C extensions. I looked into doing a .NET port of OpenSSL for IronRuby, but quickly got lost in the .NET Crypto APIs. This was 2 years ago. – Will G. removed\_email\_address@domain.invalid * * * Ironruby-core mailing list removed\_email\_address@domain.invalid [http://rubyforge.org/mailman/listinfo/ironruby-core](http://rubyforge.org/mailman/listinfo/ironruby-core) ---
**Author:** ![Craig\_Thompson](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/97f17d/32.png) [@Craig\_Thompson](https://www.ruby-forum.com/u/Craig_Thompson)\ **Post date:** [May 7, 2012, 9:12pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-openssl-sha1/219392/5 "2012-05-07T21:12:03Z")
Well, I got it to work… But I’m not sure why. In the ActiveSupport 3.0.1 gem, I made a change to line 59 in the message\_verifier.rb. I changed it from: OpenSSL::HMAC.hexdigest(OpenSSL::Digest.const\_get(@digest).new, @secret, data) To: OpenSSL::HMAC.hexdigest(OpenSSL::Digest::Digest.new(@digest), @secret, data) I have no idea why it worked. Only figured it out by hacking around in iirb. ----- Original Message ----- From: “Will G.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) To: removed\_email\_address@domain.invalid Sent: Tuesday, May 1, 2012 10:32:54 PM Subject: Re: [Ironruby-core] uninitialized constant OpenSSL::Digest::SHA1 OpenSSL in Ruby is implemented in a C Extension. Last I checked, IronRuby can’t load C extensions. I looked into doing a .NET port of OpenSSL for IronRuby, but quickly got lost in the .NET Crypto APIs. This was 2 years ago. – Will G. removed\_email\_address@domain.invalid * * * Ironruby-core mailing list removed\_email\_address@domain.invalid [http://rubyforge.org/mailman/listinfo/ironruby-core](http://rubyforge.org/mailman/listinfo/ironruby-core)