# File activesupport/lib/active_support/encrypted_file.rb, line 31
def self.generate_key
  SecureRandom.hex(ActiveSupport::MessageEncryptor.key_len(CIPHER))
end

# File activesupport/lib/active_support/encrypted_file.rb, line 42
def initialize(content_path:, key_path:, env_key:, raise_if_missing_key:)
  @content_path = Pathname.new(content_path).yield_self { |path| path.symlink? ? path.realpath : path }
  @key_path = Pathname.new(key_path)
  @env_key, @raise_if_missing_key = env_key, raise_if_missing_key
end

# File activesupport/lib/active_support/encrypted_file.rb, line 83
def change(&block)
  writing read, &block
end

# File activesupport/lib/active_support/encrypted_file.rb, line 52
def key
  read_env_key || read_key_file || handle_missing_key
end

# File activesupport/lib/active_support/encrypted_file.rb, line 58
def key?
  read_env_key || read_key_file
end

# File activesupport/lib/active_support/encrypted_file.rb, line 70
def read
  if !key.nil? && content_path.exist?
    decrypt content_path.binread
  else
    raise MissingContentError, content_path
  end
end

# File activesupport/lib/active_support/encrypted_file.rb, line 78
def write(contents)
  IO.binwrite "#{content_path}.tmp", encrypt(contents)
  FileUtils.mv "#{content_path}.tmp", content_path
end