# File lib/net/ssh/transport/hmac.rb, line 35
35:   def self.get(name, key="", parameters = {})
36:     impl = MAP[name] or raise ArgumentError, "hmac not found: #{name.inspect}"
37:     impl.new(Net::SSH::Transport::KeyExpander.expand_key(impl.key_length, key, parameters))
38:   end