encryption and decryption
Post on 06-Jul-2015
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Text Encryption and Decryption
Developed By:
Shashi Kr. Singh (1150986)
Sandeep Prasad (1150980)
Sumit Kumar (1150994)
Rishabh Anand (1150967)
Submitted To:
Rupinder Kaur GurmDepartment of Computer Science
RIMT-Institute of Engineering & Technology
Punjab ( India.)
Table of Content
1. Introduction
2. Text Encryption
3. Text Decryption
4. Feasibility-Study
5. Methodology
6. Purpose of Project
7. System Requirements
The process of converting plaintext into
ciphertext
The process of converting ciphertext into
plaintext
Introduction
Encryption
plaintext
message
ciphertext
message
Encryption
Decryption
Decryption
• Encryption is a process wherebyplaintext is converted into or ciphertext.
EncryptionPlaintext X Ciphertext Y
Key K
Text Encryption
The original unaltered contents of themessage or text is called plaintext.
• Decryption is the reverse process of
encryption or encipherment, which is to
convert ciphertext back to its original form of
plaintext.
DecryptionCiphertext Y Plaintext X
Key K
Text Decryption
The altered text after encryption is called as
enciphered text or ciphertext.
• Decryption process needs to use the same key
that is used in the encryption process to obtain
the original plaintext.
• Although one may obtain a copy of the
encrypted message, one must use the correct
key to successfully decrypt the message.
Text Decryption
Feasibility-Study
Methodology
Purpose of Project
• Provides security
• File encryption
• Communication encryption
• Network traffic encryption
• Password manager
• Single sign-on
System Requirements
• Turbo C & C++ and Dev-C
• Works on Windows 7, XP, Vista and 8
• Works on 64 bit Windows & 32 bit Windows
• Mac OS X 10.3 and above
Software Requirements
Hardware Requirements
• Intel Pentium 4 or above
• Floppy-Drive
• CD-ROM drive
• 10 GB of free hard-disk
• keyboard and mouse
• RAM(minimum 512 MB)
Friends…. Any Question ?
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