Classifications

• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
  • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
  • G06F21/31—User authentication
  • G06F21/34—User authentication involving the use of external additional devices, e.g. dongles or smart cards
  • G06F21/35—User authentication involving the use of external additional devices, e.g. dongles or smart cards communicating wirelessly
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
  • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
  • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
  • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
  • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
  • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C9/00—Individual registration on entry or exit
  • G07C9/20—Individual registration on entry or exit involving the use of a pass
  • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Definitions

• a typical computer system has a main frame computer coupled to a computer terminal, or some
• peripheral device such as a cheque reader, coupled to the main frame computer through a data bus and an address bus.
• the peripheral device can be used by someone remote- from the main frame computer for addressing the computer, and
• An object of the present invention is to provide some protection of such a system against operation of the terminal or peripheral
• a computer terminal or other peripheral device has a receiver and a detector capable of detecting whether the receiver is
• the coded signal may be provided by a pocket token suitable for hands-free operation, that is to
• the peripheral device has a latch which normally prevents operation but which can be released if the coded signal is being received. Again it can be arranged that if the coded signal is not being received, the power supply
• the detector can be arranged to set the peripheral device if coded signals are being received, so that the peripheral device can respond to an interrogation from the main fra e ⁇ computer by delivering a signal
• a detector of a presence at the peripheral device for example a photoelectric device, or an
• OM >v responsive to the presence of a person at the peripheral device for rendering the peripheral device in-operative unless coded signals are also being received.
• the bus between a main frame computer and a peripheral device includes an integrity protection unit which normally passes signals in either direction, but which can be programmed so that certain signals can only be passed at pre-programmed times 10. or perhaps can only be arranged to pass certain signals if they are passing in one direction rather than the other.
• FIGURE 1 is a diagram of a single computer protection system
• FIGURE 2 is a diagram of a multiple terminal 20. system
• FIGURE 3 is a diagram of a system similar to FIGURE 1, but with a body sensing feature
• FIGURE 4 is a diagram of an arrangement enabling a computer terminal to be interrogated 25. by a main frame computer before the main frame computer.responds to operation of the terminal;
• FIGURE 5 is a diagram of a system for protecting a computer system by means of an integrity protection unit. 30.
• a computer terminal 11 is connected by lines 12 to a computer, through lines 13 to a keyboard, through lines 14 to a visual display unit, and through a line 15
• the terminal contains control electronics indicated generally at 16, and connected to the line 15 through a normally open relay contact 17.
• a pick-up aerial 18 which is shown as pos itionedwithin the terminal,
• signals are being picked up at 18. If so, the detector 21 is arranged to hold the contacts 17 closed, so that the control electronics 16 can be energised from the supply.
• control electronics 16 are not energised and operation of the keyboard is ineffective.
• FIGURE 2 shows a modification of the
• FIGURE 25 arrangement of FIGURE 1, suitable for use where there are a number of terminals 11, and where it is desired that a terminal can be operated if the operator is carrying any one of a number of differently coded tokens.
• the output
• each amplifier 19 is connected to a different circuit
• OMPI input of a multiple code detector 22 which is arranged, if it detects that one of the appropriate coded signals is present,to supply through a delay unit 23 a signal to operate a relay 24 controlling the normally-open contact
• the delay may,for example, be adjustable in one minutes steps to be anything between 1 and 5 minutes .
• Either of the arrangements of FIGURES 1 and 2 may be used in conjunction with a body sensor, as indicated in FIGURE 3.
• the body sensor may for example,
• sensor it can be arranged that a normally- closed contact 26 is held open as long as a body is being sensed.
• the contact 26 is connected in parallel with the normally-open contact 17 which is closed when an appropriate signal is picked up at 18. In this case
• the relay 24 is operated from a timer 23 which is arranged to open the contacts 17 if a body is being sensed but no appropriate signal is being picked up, that is if both contacts 26 and 27 are open, for longer than a short delay time.
• the delay time will allow the authorised
• the timer 23 may in addition to,or instead of, operating the switch 17, operate an alarm.
• FIGURE 4 has the feature that a main frame computer 31 can interrogate a terminal
• the terminal has an aerial 18 as already described, and an amplifier 19 and a detector 21. The difference
• the detector 21 is coupled to the control electronics 16 through interrogation lines 34. It is then not necessary to have a latch or means for cutting off the power supply to the terminal because the main frame computer can be programmed so that
• the computer 31 interrogates the terminal before responding to instructions.
• the interrogation lines 34 are coupled to the electronics 16 so that if a token 33 is
• the electronics will be set perhaps by the closing of a switch, or by the setting up of an appropriate code, or in some other way to be able to respond to the interrogation from the main frame computer 31, over lines 12.
• a modem 37 that is a device capable of modulating and demodulating coded signals .
• protection unit 41 can be connected in the buses
• the unit 41 is then programmed to allow signals to pass only in accordance with certain conditions.
• the unit 41 might be programmed so that it will not
• the unit 41 may be programmed so that it will only pass information from a peripheral device for entering information in the
• main computer if the information is passed at a certain time, which will be a time when authorised people know that that type of information can be fed to ' the main computer. • Anybody fraudulently trying to feed such information to the main computer ,
• Such a computer integrity protection unit 41 can be included in series in the data and address buses leading to a peripheral device 42,other than by way of a modem and Post Office line, and the unit 41
• the portable token referred to at 33 will generally be one that can be carried in the pocket or the handbag of an authorised terminal operator

Landscapes

• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Physics & Mathematics (AREA)
• General Engineering & Computer Science (AREA)
• Human Computer Interaction (AREA)
• Computer Security & Cryptography (AREA)
• Software Systems (AREA)
• Computer Hardware Design (AREA)
• Artificial Intelligence (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Computer Networks & Wireless Communication (AREA)
• Burglar Alarm Systems (AREA)
• Alarm Systems (AREA)
• Communication Control (AREA)
• Input From Keyboards Or The Like (AREA)
• Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Applications Claiming Priority (6)

Publications (1)

Family

ID=27260774

Family Applications (2)

Family Applications After (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (5)

• 1980
  • 1980-10-07 JP JP50221880A patent/JPS56501302A/ja active Pending
  • 1980-10-07 WO PCT/GB1980/000156 patent/WO1981001063A1/en unknown
  • 1980-10-07 EP EP80901852A patent/EP0040198A1/en not_active Withdrawn
  • 1980-10-09 EP EP80303565A patent/EP0027058A1/en not_active Withdrawn
  • 1980-10-09 ES ES495779A patent/ES495779A0/es active Granted
• 1981
  • 1981-05-26 DK DK229681A patent/DK229681A/da not_active Application Discontinuation

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events