def identities
      names = []
      cmd = Xcode::Shell::Command.new "security"
      cmd << "find-certificate"
      cmd << "-a"
      cmd << "\"#{@path}\""
      cmd.show_output = false
      cmd.execute.join("").scan /\s+"labl"<blob>="([^"]+)"/ do |m|
        names << m[0]
      end
      names
    end
def identities
      names = []
      cmd = Xcode::Shell::Command.new "security"
      cmd << "find-certificate"
      cmd << "-a"
      cmd << "\"#{@path}\""
      cmd.show_output = false
      cmd.execute.join("").scan /\s+"labl"<blob>="([^"]+)"/ do |m|
        names << m[0]
      end
      names
    end
Returns a list of identities in the keychain.

 @return [Array<String>] a list of identity names