The document discusses secured data transmission over a network. It describes transmitting individual data through least significant bit (LSB) encoding, which hides a secret message within an image in a way that is difficult to detect. The system allows a user to select data to encrypt or decrypt using LSB encoding and transmit securely over a network. It has a user module that allows a user to run the application, select data for processing, and send or receive encrypted data.

2.  Importance of data security while transmitting data on
network. At present there are few methods like File
transfer protocol for sending data in large size which
use other techniques which are not useful for
individual data transfer.
 At present we normally send data by compressing large
amount of data by adding security methods like
password protection. There are many methods
available in the market for finding password so we
need effective algorithms.

3.  In secured data transmission model we mainly
concentrated on sending data between individuals
using LSB technique which is simple and easy to
implement and provide high security. For this we
implemented LSB, Image viewer, transmission
methods.
 Secured Data Transmission through Network handles
hiding a secret message with in an image in such a way
that others cannot discern the presence or contents of
the hidden message.
 A message might be hidden with in an image by
changing Least Significant Bit to be the message bits.

4. Functional requirement.
The system has the following functional Requirements.
Module Description:
There is 1 module in this Secured Data Transmission
over the Network. They are:
1.User
User Module
The functionalities of the User module are:
1.A user runs application.
2.User selects data to process.
3.Application processes the data Encrypt or Decrypt data.
User sends or receives data securely

5. Encrypted
text
Cover
image file
ASCII to
Binary
conversion
Pixel to
Binary
conversion
LSB
encoder
Binary to
Pixel
conversion
Stego
image file
Text file
(Secret
message)
Encryption

6. Decryption Process
• Implement using J2EE.
Encrypted
text
Cover
image file
Binary to
ASCII
conversion
Binary to
Pixel
conversion
LSB
decoder
Binary to
Pixel
conversion
Stego
image file
Decryption
Text file
(Secret
message)

7. Description
June
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Project Proposal
Proposal Presentation
Literature Review
Implementation
Testing
Report writing
Month