Abstract:
A method computer usable medium and computer system circuitry are disclosed for starting or “booting up” a computer from a remote location using a remote command device such as a cellular telephone. The method and system includes a secure means for remotely storing and transmitting security passwords.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of Invention 
     The present invention generally relates to starting a digital data processor remotely via a handheld communication device. 
     2. Description of Related Art 
     After having been shut down, a computer user must perform a series of start-up operations, commonly known as boot-up, before the computer is ready for service. For purposes of this description, boot-up may include powering up the computer, and allowing access to password protected segments of the computer and its associated software and hardware systems. Conventionally, initiation of the boot-up sequence requires the user&#39;s physical presence at the computer terminal. As computers and their stored software become more complex, the boot up process tends to require an unacceptably long period time to perform the necessary operations and routines. 
     Computers are commonly interconnected via a network. Typically, personal computers (PCs) interface with the network by means of a network interface card, having a unique address, which is designed to continually monitor incoming packets over the network. When the network interface card detects an incoming packet containing its unique address, the network interface card will identify itself as the intended recipient of the packet. 
     One special purpose incoming message is known as a Magic packet. The Magic Packet is a broadcast frame having a configuration comprising a defined constant followed by sixteen repetitions of the target computers network interface card address possibly followed by a four or six bite password. A common application of Magic Packet technology is the remote commanding of computer states including waking the computer from an “off” or “hibernated” state. 
     A computer in a power down state may be in a “suspended power state” or a “hibernated power state.” In general a computer in a suspended power state is similar to a computer with all power removed except that power to memory is maintained and dynamic RAM (DRAM) is refreshed. In addition, the operations of the computer are held in a suspended power state for a suspend operation, whereas the system loses its current operational state on a general power down. 
     SUMMARY OF THE INVENTION 
     It is observed, by the inventors, that it would be desirable to have a means for remotely initiating a computer&#39;s boot up process in a network system in a safe and secure configuration. It would be preferable to provide for initiation of the boot up procedure using a remote, wireless communication device such as a cellular telephone, wireless text messaging system and the like. 
     Embodiments herein disclosed include a method comprising: detecting at a network client system a packet of remotely transmitted data; deciphering at least a portion of the data in the detected packet to produce a password key; determining if the password key allows access to a password required for boot-up; recovering the password if the password key allows access to such password; and utilizing the password in the client system to boot-up the client system. 
     Embodiments further include a computer-usable medium having computer readable instructions stored thereon for execution by a processor to: detect at the a network client system a packet of remotely transmitted data; decipher at least a portion of the data in said detected packet to produce a password key; determine if the password key allows access to a password required for boot-up; recover the password if the password key allows access to such password: and utilize the password in the client system to boot-up the client system. 
     Embodiments also include apparatus comprising: a network interface configured to detect a remotely transmitted data packet; an electronic memory; a processor which is operatively coupled to the network interface and to the electronic memory which executes code stored in the electronic memory, the processor, in response to execution of the code deciphers at least a portion of the data in the detected packet to produce a password key, determines if the password key allows access to a password required for boot-up, recovers the password if the password key allows access to such password, and utilizes the password to boot-up. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       Embodiments are illustrated by the drawings. 
         FIG. 1  is a simplified schematic presentation of the computer, a cellular telephone used as a remote command device and the interconnection facilities. 
         FIG. 2  is a conceptual flow chart of the sequence of operations for accomplishing remote computer boot up. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments herein described include the means and methods for remotely initiating the secure boot up process of a user&#39;s computer. 
     In an embodiment a computer executes an algorithm when it is shut down as part of a “shutdown event.” The algorithm initially generates a first random number, “R”, that is transmitted as al SMS message to a user specified wireless communication device, such a cellular telephone via a network interface card to a computer network or telephone modem. The wireless communication device stores the received SMS message. The computer does not store the generated first random number but does generate and store a second random number mathematically related to the first random number and to a boot-up security password. The security password may be, for instance, either the hard file password (HDP) or the power on password (POP). The machine is then placed into its “sleep” state. 
     Subsequently, when it is desired to boot up the computer, the wireless communication device, such as a cellular telephone, is used to send the stored SMS message to the computer. The random number contained in the SMS message is used to mathematically operate on the computer stored second random number thereby producing the boot-up security password. Boot up is then initiated. The BIOS checks that the system is booting only to the correct hard disk. If the correct disk is confirmed, then the hard file is released and the system will boot up to the operating system log in prompt. 
     Embodiments herein include a method for remotely waking up a client system within a network, the client system requiring a power-on password for powering on the system. The method comprises the steps of detecting at the network client system a packet of remotely transmitted data decipherable as a password key, determining if the password key allows access to the power-on password, recovering the power-on password if the password key allows access to the password, and utilizing the power-on password in the client system to power on the client system. 
     Other embodiments comprise a method for remotely waking up a network client system, the system having stored thereon a first key reflective of a power-on password. The key is accessible via a short text message. The method comprises the steps of detecting at the network client system a packet of transmitted data decipherable as a short message service, determining if the short message service allows access to the power-on password, and releasing the power-on password to the network client system if the short message service allows access. 
     Other embodiments disclosed are a system for remotely waking up a client system within a network comprising means for detecting a transmitted packet of data which includes a random number, means for determining if the random number in the transmitted packet of data allows access to a power-on password associated with the client system, and means for utilizing the power-on password in the client system if the random number allows access to the power-on password. 
     Referring to  FIG. 1 , a simplified example of conventional personal computer architecture  100  is schematically presented. The architecture comprises a central processing unit (CPU)  10 , a system memory  20 , and a network interface card  30 , interconnected by a system bus  40 . The network interface card  30  connects with the external network  50  of other network nodes. The network interface card  30  may, in addition, connect to a telephone modem  60  for directly accessing the public telephone system  90 . The interface with the public telephone system can thereby, provide connectivity between any cellular. Wirelessly or wired telephone device and the computer&#39;s network interface card  30 . Similarly this connectivity may be indirectly provided by way of the computer network  50  if the network has a portal  80  with the public telephone system. 
     The computer  100  will typically be in one of three states at the time remote boot up is desired designated as S 3  (suspend), S 4  (hibernate), or S 5  (off). It is assumed that the user is uncertain of the current state. Sending the remote boot up command should thus take the appropriate action regardless of the initial computer state. With respect to system security, Power On Password (POP) protection is typically employed. Although available, Privilege Access Password or Adm in Password and Hard Disk Password (HDP) are not usually employed. 
     The system to enable remote boot up of the computer is comprised of the target computer  100  including a network interface card  30 , a remote command device such as a cellular telephone  70 , a network  50  or other communications means to provide remote connectivity between the computer&#39;s network interface card and the remote command device. Other examples of suitable remote command devices include personal digital assistants (PDAs), Blackberries™ or other similar devices, having a read-write memory and capable of providing communications, with the computer, via a network or the public telephone system. Additionally, the computer  100  may include algorithmic processes or programs stored in the computers memory to implement the necessary action. 
     As shown in  FIG. 2 , a communications connection is established  190  between the computer  100  and the remote command device  70 . The NIC address retrieval algorithm  200  is run and obtains the address of the network interface card  30 . A random number, R 1 , is generated  210  by the computer. R 1  may be transmitted from the computer  100  to the remote command device  70  and stored in the device s memory. The computer  100  performs a mathematical operation between R 1  and a computer password required for boot-up such as the power-on password (POP) or the hard drive password (HDP) thereby generating a new random number R 2 . Examples of suitable mathematical operations are either [R 1low  XOR POP] or [R 1high  XOR HDP]. Thus, for instance, R 1low  XOR POP=R 2 . The computer  100 , discards R 1 , saves R 2  in memory, and is subsequently locked-down. When it is desired to restart the computer  100 , the random number, R 1 , may be transmitted, in a message, from the remote command device  70  to the computer. The message may be formatted to comply with Magic Packet. The Magic Packet is a broadcast frame having a configuration comprising a defined constant followed by sixteen repetitions of the target computers network interface card address possibly followed by a four or six byte password. A common application of Magic Packet technology is the remote commanding of computer wakeup. The computer  100  performs a complementary mathematical operation on received random number R 1  and computer stored random number R 2  thereby generating the password required for boot-up. Thus, for the instance sited above, R 1low  XOR R 2 =POP. This procedure provides security for the password, if the remote command device is lost or stolen. 
     In another embodiment, a random number, R 1 , is generated  210  by the computer. The computer  100  performs a mathematical operation between R 1  and a computer password required for boot-up such as the power-on password (POP) or the hard drive password (HDP) thereby generating a new random number R 2 . R 2  may be transmitted from the computer  100  to the remote command device  70  and stored in the device&#39;s memory. The computer  100 , discards R 2 , saves R 1  in memory, and is subsequently locked-down. When it is desired to restart the computer  100 , the random number, R 2 , may be transmitted from the remote command device  70  to the computer. The computer  100  performs a complementary mathematical operation on received random number R 2  and computer stored random number R 1  thereby generating the password required for boot-up. 
     STATEMENT REGARDING PREFERRED EMBODIMENTS 
     While the invention has been described with respect to preferred embodiments those skilled in the art will readily appreciate that various changes and/or modifications can be made to the invention without departing from the spirit or scope of the invention as defined by the appended claims. All documents cited herein are incorporated by reference herein where appropriate for teachings of additional or alternative details, features and/or technical background.