Ruby facebook graph api appsecret_proof

Question

How can I create an appsecret_proof using Ruby for the facebook graph api?

Facebook has an example in PHP. I also saw an example in ruby in this gist.

Answer 1

I've found another way to generate the appsecret_proof for Facebook:

OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), , )

Excerpt taken from this gist thread