This document describes a file security system that uses encryption to secure files. It discusses the objectives of securing files from unauthorized users and maintaining confidentiality. The system uses encryption and decryption techniques, including symmetric-key and asymmetric-key encryption. It implements these techniques across three modules: input, process, and output. The system encrypts files using the AES encryption algorithm before outputting the encrypted file.

1. FILE SECURITY SYSTEM
Under Guidance Presented By
Er. Alok Jadaun Dheeraj Kumar Singh(1000410015)
Pushpendra Kumar(1100410901)
Rohit Singh(1000410061)
Surendra Kr Kannoujiya(1000410083)

2. CONTENT
 Introduction
 Objective of file security system
 Technique used in file security system
 Encryption
 Decryption
 Symmetric-key encryption
 Asymmetric-key encryption
 How much module used in the project
 Algorithm is used in the encryption process
 Flow chart of AES algorithm
 Requirement of Software and hardware
 Snapshots
 Conclusion

3. INTRODUCTION
 The File Security System is a software, which tries
to alter the originality of the text into some
encrypted form.
 It is use to store the information in a form that is
unreadable.
 The Application should have a reversal process as
of which should be in a position to decrypt the data
to its original format upon the proper request by the
user.

4. OBJECTIVE OF FILE SECURITY SYSTEM
 Secure the file from unauthorized user.
 If hacker get the encrypted file they can not read to
the file.
 It give confidentiality to user that information is
secure.

5. TECHNIQUE USED IN FILE SECURITY
SYSTEM
 Encryption
 Decryption

6. ENCRYPTION
 Encryption is the process of encoding messages (or
information) in such a way that eavesdroppers or
hackers cannot read it, but only authorized parties
can access.
 In an Encryption scheme, the message or
information (referred to as plaintext) is encrypted
using an encryption algorithm, turning it into an
unreadable cipher text. This is usually done with the
use of an encryption key.

7.  This is usually done with the use of an encryption key
which specifies how the message is to be encoded.
There are two basic types of encryption schemes:
 Symmetric-key encryption
 Asymmetric-key(public-key encryption)

8. DECRYPTION
 Decryption should be a reverse process of encryption
process.
 Decryption is the process of encoding messages (or
information) in such a way that it become readable for
users.
 It convert the cipher text into the plain text after
encryption.

9. SYMMETRIC-KEY ENCRYPTION
 In symmetric-key schemes, the encryption and
decryption keys are the same.
 It involves a single secret key which both the message-
sender and the message-recipient must have.
 It is used by the sender to encrypt the message and by
the recipient to decrypt it.

10. Fig 1.0- SYMMETRIC-KEY ENCRYPTION

11. ASYMMETRIC KEY(PUBLIC KEY ENCRYPTION)
 The term "asymmetric" stems from the use of different
keys to perform these opposite functions.
 It requires two separate keys one of which is secret (or
private) and one of which is public.
 The public key is used to encrypt plaintext and the private
key is used to decrypt cipher text.

12. Fig 2.0- ASYMMETRIC KEY(PUBLIC KEY ENCRYPTION)

13. MODULES
 We used three module in the project.
(1) Input module.
(2) Process module.
(3) Output module.

14. INPUT MODULE
 In this module we implement attachment of file in the file
security system.
 In this module we select the file type.
PROCESS MODULE
 In this module we implement the process for the file
security system like as encryption and decryption.
OUTPUT MODULE
 In this module we save the encrypted file in
memory.

15. ALGORITHM USE IN ENCRYPTION
PROCESS
 AES (Advanced Encryption Standard )
AES:-AES is a symmetric-key algorithm, meaning the
same key is used for both encrypting and
decrypting the data.
The Advanced Encryption Standard (AES) is a
specification for the encryption of electronic data
established by the U.S. National Institute of
Standards and Technology (NIST) in 2001.

16. FLOW CHART OF AES ALGORITHM

17. REQUIREMENT OF SOFTWARE
Software:-The Software used in file security system are as
follows:-
 Operating System
 Windows NT/2000 (Client/Server)
 Front-end: Java JDK 1.4, J2Sdk 1.1.4, Swings.

18. REQUIREMENT OF HARDWARE
Hardware:-The hardware used in iris recognition are as
follows:-
 Pentium IV Processor with 1.9 GHz Clock Speed
 512 MB RAM, 20 GB HDD, 32 Bit PCI Ethernet Card

19. SNAPSHOTS

20. SELECT THE FILE LOCATION

21. AFTER SELECT THE FILE

22. SELECTED FILE BEFORE ENCRYPTION

23. MESSAGE OF SUCCESSFUL ENCRYPTION

24. AFTER ENCRYPTION PROCESS FILE IS

25. SELECT FILE FOR DECRYPTION

26. AFTER DECRYPTION

27. AFTER DECRYPTION PROCESS THE FILE IS

28. CONCLUSION
A new simple tool has been created, which is
targeted for use inside of a small institution such as
a small university for lecturers’ daily use of sending
exam files and sensitive material such that the
material can be encrypted and the file is sent in one
e-mail while the encryption key is sent in another e-
mail or via any secure communication channel.

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http://www.nvidia.cn/object/tesla_computing_solutio
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 Sara Tedmori, Nijad Al-Najdawi ” Lossless Image
Cryptography Algorithm Based on Discrete Cosine
Transform” IAJIT First Online Publication
vol.3,2011.
 Dariusz Stanislawek , “Free Software copyright
1997 - 2006 ”
http://members.ozemail.com.au/~nulifetv/freezip/fre
eware

30.  Vivek Thakur , “NeekProtect”,
http://neekprotect.sourceforge.net , 2006.
 S.Quinlan and S. Dorward. Venti: a new
approach to archival storage. In Proc. of the
Conference on File and Storage Technologies
(FAST), January 2002.
 HweeHwa Pang, Kian-Lee Tan and Xuan Zhou.
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