FINAL YEAR PROJECTS ABSTRACT ECE-Wireless encryption and decryption newWireless Encryption and Decryption Message transfer system for Military Applications

RF Based Wireless Encryption and Decryption Message
transfer system for Military Applications

ABSTRACT:

In simple terms, data security is the practice of keeping data protected from corruption
and unauthorized access. The focus behind data security is to ensure privacy while
protecting personal or corporate data.

Data is the raw form of information stored as columns and rows in our databases,
network servers and personal computers. This may be a wide range of information from
personal files and intellectual property to market analytics and details intended to top
secret. Data could be anything of interest that can be read or otherwise interpreted in
human form.

Data security is critical for military applications. All of the information can be hard to
replace and potentially dangerous if it falls into the wrong hands

The need for this project arises when we want the data communication to be protected
from others. This is highly essential in the military field and especially during war times.
Because during war periods when a particular army wants to send a message to remotely
located units, which belong to the same army, in between any person can trap the data
when it is transmitted through wireless.

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Existing System

CDMA is a military technology first used during World War II by English allies
to foil German attempts at jamming transmissions. The allies decided to transmit over
several frequencies, instead of one, making it difficult for the Germans to pick up the
complete signal. Because Qualcomm created communications chips for CDMA
technology, it was privy to the classified information. Once the information became
public, Qualcomm claimed patents on the technology and became the first to
commercialize it.


Proposed System

CDMA Short for Code-Division Multiple Access, a digital cellular technology
that uses spread-spectrum techniques. Unlike competing systems, such as GSM, that use
TDMA, CDMA does not assign a specific frequency to each user. Instead, every channel
uses the full available spectrum. Individual conversations are encoded with a pseudo-
random digital sequence. CDMA consistently provides better capacity for voice and data
communications. The design is based on frequency hopping spread spectrum technology
as funded and developed by the Defense Advanced Research Products Agency (DARPA)
for the United States Military to ensure secure and reliable communications under the
most severe wartime battlefield conditions.

Our aim of the project is to protect the data from the ensnares. To accomplish
this, we have used a PC as a sender and PIC microcontroller as a receiver station. The
message to be sent is fed in to the computer for different units. The computer will encode
the data using generating a duplicate Character for a real one.
At the receiving end the PIC microcontroller will then decode the Received data and
displays the message on the display. The communication takes place through a Wireless
RF Transmitter and Receiver operating at 433.92 MHz
we can also use CRO at the transmitting point to view the encoded data.

To ensure the security level at the receiving end we have a password protection. Once
the Message is received the unit will give an alarm message so that one can know that the
message has arrived. The he must enter the password through the keypad. If the
password matches then he is allowed to view the data.


Block Diagram

Message
Encoder

RF Tx Module

RF Rx Module

Power
Supply
PIC Microcontroller +5VDC
PIC 16F877A
(Message Decoder)

Move towards 45 Deg E

Visual
Alarm Alert
Driver LED 4 X 3 Matrix Key Pad.

Alarm


Hardware Requirements

1. PIC 16F877A Microcontroller
2. LCD display 2 X 16 Character
3. RF Transmitter Module
4. RF Receiver Module
5. Matrix Keypad
6. LED
7. Alarm
8. Personal Computer
9. Resistors
10. Capacitors
11. Transistors
12. PIC Programmer Kit

Software Requirements

1. MPLAB IDE V6.0
2. HITECH C COMPILER
3. MICROPRO – PIC Programmer Software


Advantages
1. Limiting physical access to the radio equipment
2. Using Point-to-Point operating mode
3. Periodically changing network configuration
4. Further data encryption before presenting it to the wireless network.
5. Data Separation
6. Encryption Is On The Data
7. Encryption Equals Confidentiality
8. Password Protected
9. RF Data Packets

Disadvantages and Drawbacks

1. No separate Algorithm
2. Discovering exactly the RF hopping pattern and its adaptive criteria in order to
gain access to sequential RF packets. Build an RF receiver to which the learned
RF hopping lessons could be applied.
3. Analyzing the modulation type employed and build the appropriate demodulator
and logic translator so received RF packets could be collected on a computer.
4. Using the collected data, ascertain its structure, encryption method, and
compression algorithm. Build tools to strip out the data, decrypt it and
uncompress it.


Applications

1. Military applications
2. Banking applications
3. Private sectors
4. Satellite communications


FINAL YEAR PROJECTS ABSTRACT ECE-Wireless encryption and decryption newWireless Encryption and Decryption Message transfer system for Military Applications

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FINAL YEAR PROJECTS ABSTRACT ECE-Wireless encryption and decryption newWireless Encryption and Decryption Message transfer system for Military Applications