# File lib/pdf/writer/object/encryption.rb, line 44
44:   def to_s
45:     res = "\n#{@oid} 0 obj\n<<\n/Filter /Standard\n"
46:     res << "/V 1\n/R 2\n"
47:     res << "/O (#{PDF::Writer.escape(@owner_info)})\n"
48:     res << "/U (#{PDF::Writer.escape(@user_info)})\n"
49:     res << "/P #{(((@perms ^ 255) + 1) * -1)}\n"
50:     res << ">>\nendobj\n"
51:     res
52:   end