request.rb in slack-ruby-client-1.0.0

- old
+ new

@@ -1,11 +1,13 @@
 # frozen_string_literal: true
 module Slack
   module Events
     class Request
       class MissingSigningSecret < StandardError; end
+
       class TimestampExpired < StandardError; end
+
       class InvalidSignature < StandardError; end
 
       attr_reader :http_request,
                   :signing_secret,
                   :signature_expires_in
@@ -49,10 +51,10 @@
 
       # Returns true if the signature coming from Slack is valid.
       def valid?
         raise MissingSigningSecret unless signing_secret
 
-        digest = OpenSSL::Digest::SHA256.new
+        digest = OpenSSL::Digest.new('SHA256')
         signature_basestring = [version, timestamp, body].join(':')
         hex_hash = OpenSSL::HMAC.hexdigest(digest, signing_secret, signature_basestring)
         computed_signature = [version, hex_hash].join('=')
         computed_signature == signature
       end