JAVA RING

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JAVA RING

• Presented By
• MAYA N
• Roll No 21
• MCA B5

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Overview

• What is a java ring?
• History
• Working
• iButton
• Blue Dot Receptor
• Comparison with smart cards
• Applications
• Advantages
• Disadvantages
• Conclusion

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What is a Java Ring ?...

• Is a finger ring that contains a small
  microprocessor with built in capabilities for the
  user.
• Is a sort of a smartcard that is wearable on a
  finger.
• Is in fact a java smart card based on Java
  Virtual Machine that was proposed as the Java
  card 2.0.

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More

• The Java Ring is a stainless-steel ring,
  16-millimeters (0.6 inches) in diameter, that
  houses a 1-million-transistor processor, called
  an iButton.
• The ring has 134 KB of RAM, 32 KB of ROM, a
  real-time clock and a Java virtual machine, which
  is a piece of software that recognizes the Java
  language and translates it for the user's
  computer system

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JAVA RING
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• The Java Ring
• Contains a tiny Java Virtual Machine
• Implements the Java Card 2.0 API
• Stores information in NVRAM (6K)
• Runs applets
• Includes microprocessor, memory, clock and battery

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Java Ring in its natural environment..
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History

• The java ring, which is powered by Java card was
  introduced at Sun Microsystems's JavaOne
  Conference, in March 1998.
• It was developed by Dallas Semiconductor.
• Workstations at the conference had "ring readers"
  installed on them that downloaded information
  about the user from the conference registration
  system.
• This information was then used to enable a number
  of personalized services.

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Contd

• Java ring has been tested at Celebration School,
  an innovative K-12 school, just outside Orlando,
  FL. The rings are given to students and have been
  programmed to
• store electronic cash to pay for lunches
• automatically unlock doors
• take attendance
• store medical information
• allow students to check out books.
• Students simply press the signet of their
  Java Ring, and it performs the desired function.

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Contd

• The rings given to students are programmed with
  Java applets that communicate with host
  applications on networked systems. Applets are
  small applications that are designed to be run
  within another application.
• The Java Ring is snapped into a reader, called a
  Blue Dot receptor, to allow communication between
  a host system and the Java Ring.

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Working

• Whenever the user pushes his ring on a ring
  reader(Blue Dot Receptor), the corresponding
  application will take place.
• The jewel of the java ring is the iButton.
• iButton is a computer chip enclosed in a thick
  stainless steel can.
• It uses 1-wire protocol for communication with
  the host and the iButton.

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Contd

• Information is transferred between your iButton
  and a PC with a momentary contact at up to
  142kbps.
• You simply touch your iButton to a Blue Dot
  receptor or other iButton probe, which is
  connected to a PC.
• The Blue Dot receptor is cabled to a 1-Wire
  adapter that is attached to a spare PC port.
  1-Wire adapters exist for USB, serial, and
  parallel ports. The Blue Dot receptor and 1-Wire
  Adapter are inexpensive

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Contd

• The Java Card 2.0 architecture has taken
  client/server architectures to a new place -- one
  where the "server" is a small piece of software
  on an extremely small system, and the client is a
  potentially huge piece of software on a
  potentially much larger system.
• The network protocol is encapsulated in packets
  that are called application program data units,
  or APDUs for short

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Contd

• The smart card runtime code gets the first crack
  at decoding the APDUs as they arrive on the
  serial interface.
• Further, there are predefined APDUs that tell the
  runtime to select an applet, delete applets, load
  applets, and so on.
• Thus, errant applets are simply deleted by the
  developer once it's ascertained that they aren't
  responding correctly to the APDUs they receive

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iButton

• The iButton is a mechanical packaging standard
  that places a 1-Wire component inside a small
  stainless steel "button" similar to a disk-shaped
  battery.
• Each iButton has a unique and unalterable address
  laser etched onto its chip inside the can.
• The address can be used as a key or identifier
  for each iButton.

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iButton
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More

• iButtons are connected to 1-Wire bus systems by
  means of a socket with contacts which touch the
  "lid" and "base" of the canister.
• The connection can be fleeting, similar to
  swiping a credit card through a reader.
  Semi-permanent connections are possible with a
  different socket type. (The iButton clips into
  it, but is easily removed).

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Contd

• Unlike electrically erasable programmable
  read-only memory (EEPROM), the NVRAM iButton
  memory can be erased and rewritten as often as
  necessary without wearing out.
• It can also be erased or rewritten at the high
  speeds typical of complementary metal oxide
  semiconductor (CMOS) memory, without requiring
  the time-consuming programming of EEPROM

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iButton Structure
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Lay out of iButton
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1- Wire Interface
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Blue Dot Receptor

• The Blue Dot Receptors are iButton reader/probes
  that provide a convenient pipeline into the PC
  for iButton-to-PC communication.
• The receptor's cable connects to a USB, serial,
  or parallel-port 1-Wire adapter, whichever type
  of port you wish to use.
• The receptor itself easily affixes to any
  accessible spot on the front of the PC.

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Blue Dot Receptor..
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Contd

• The user can elect a quick information transfer
  with a momentary touch of the iButton to the Blue
  Dot.
• For hands-free operation the iButton can be
  snapped into the Blue Dot and remain there.
• Each receptor contains two Blue Dots to
  accommodate instances where multiple iButtons are
  required for a transaction.

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Opening doors
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KEY FOB
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Comparison with Smart Cards

• iButtons have an advantage over conventional
  smart cards in term of durability and longevity.
• iButtons are rugged enough to withstand harsh
  environments.
• iButton uses java as a common programming
  language.

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Applications

• Access Control
• Time and attendance
• eCash
• Thermochron Applications
• Gaming Systems

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Advantages

• A very easy and convenient way for users.
• More secure than using passwords.
• Portable.
• Ruggedness.
• Wearable.

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Contd

• Provides authentication to users which is crucial
  for many applications.
• Easier for administrator to maintain the security
  infrastructure.
• Provides real memory, more power, and a capacity
  for dynamic programming

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Disadvantages

• Parents and teachers will have less control over
  children and students
• Loss of privacy

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Conclusion

• The java powered cryptographic iButton named java
  ring can readily support the commerce models that
  have traditionally been the province of credit
  cards.
• Its greatest promise appears to lie in its
  capacity to interact with Internet applications
  to support strong remote authentication and
  remotely authorized financial transactions.
• The use of Java promotes compatibility with these
  applications by providing a common language for
  all application programming.

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THANK YOU