Extract insecure key fingerprint to separate file

lib/api/internal.rb

-require "gitlab/key_fingerprint"
-
 module API
   # Internal access API
   class Internal < Grape::API

lib/gitlab/insecure_key_fingerprint.rb

+module Gitlab
+  #
+  # Calculates the fingerprint of a given key without using
+  # openssh key validations. For this reason, only use
+  # for calculating the fingerprint to find the key with it.
+  #
+  # DO NOT use it for checking the validity of a ssh key.
+  #
+  class InsecureKeyFingerprint
+    attr_accessor :key
+
+    #
+    # Gets the base64 encoded string representing a rsa or dsa key
+    #
+    def initialize(key_base64)
+      @key = key_base64
+    end
+
+    def fingerprint
+      OpenSSL::Digest::MD5.hexdigest(Base64.decode64(@key)).scan(/../).join(':')
+    end
+  end
+end

lib/gitlab/key_fingerprint.rb

@@ -52,26 +52,4 @@ module Gitlab
       version_info >= required_version_info
     end
   end
-
-  #
-  # Calculates the fingerprint of a given key without using
-  # openssh key validations. For this reason, only use
-  # for calculating the fingerprint to find the key with it.
-  #
-  # DO NOT use it for checking the validity of a ssh key.
-  #
-  class InsecureKeyFingerprint
-    attr_accessor :key
-
-    #
-    # Gets the base64 encoded string representing a rsa or dsa key
-    #
-    def initialize(key_base64)
-      @key = key_base64
-    end
-
-    def fingerprint
-      OpenSSL::Digest::MD5.hexdigest(Base64.decode64(@key)).scan(/../).join(':')
-    end
-  end
 end