sha example link

[Logado]

I saw on the forum an example on how to use the ruby SHA for encryption and decryption.I try to find again but not found. Can someone provide a link?

[tulamide]

Never saw an example, but it is not too difficult. At first you need to grab the OpenSSL library from Ruby, since it is not part of Flowstone's Ruby. If you install it as described in the FS manual, you can afterwards access it using

Code: Select all

require 'openssl'

you can then access SHA (or MD) like so

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data = File.read('document')
sha256 = OpenSSL::Digest::SHA256.new
digest = sha256.digest(data)

Read more about it here: http://ruby-doc.org/stdlib-1.9.3/libdoc/openssl/rdoc/OpenSSL/Digest.html

[Logado]

yeah in theory it's simple but my ruby show me only error, i try now compile ruby.
I hope this helps
found example, but here only generate hash,i need digital signature .
I understand that in any case it was hacked, but I want to understand how to use asynchronous key generation.

[tulamide]

...but I want to understand how to use asynchronous key generation.

You really need Ruby's OpenSSL implementation. It's all in there. See http://ruby-doc.org/stdlib-1.9.3/libdoc/openssl/rdoc/OpenSSL.html

Regarding installation: You not only need to install Ruby's OpenSSL (not OpenSSL), you also need to install each dependency that is not already part of Ruby's standard installation. You do so by looking at any .rb of Ruby's OpenSSL and searching for each 'require'.

It is cumbersome, but not difficult. Maybe you should install a full Ruby 1.9.3 (that the version Flowstone uses). It will contain everything you need, and you could copypaste from there.