```ruby
#
# Cookbook:: apache2
# Recipe:: mod_cloudflare
#
# Copyright:: 2008-2017, Chef Software, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

apt_repository 'cloudflare' do
  uri 'https://pkg.cloudflare.com/'
  distribution node['lsb']['codename']
  components ['main']
  key 'http://pkg.cloudflare.com/pubkey.gpg'
  action :add
end

package 'libapache2-mod-cloudflare' do
  notifies :restart, 'service[apache2]'
end
```

Use https to get the cloudflare gpg key
user
```ruby
#
# Cookbook:: apache2
# Recipe:: mod_cloudflare
#
# Copyright:: 2008-2017, Chef Software, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

apt_repository 'cloudflare' do
  uri 'https://pkg.cloudflare.com'
  distribution node['lsb']['codename']
  components ['main']
  key 'https://pkg.cloudflare.com/pubkey.gpg'
  action :add
end

package 'libapache2-mod-cloudflare' do
  notifies :restart, 'service[apache2]'
end
```
assistant