new encryption technique

A Novel Encryption, Decryption Process Using

Permutation Choice

Y.S.R Engineering College Of Y.V.U::Proddatur

Presenting By :

I. Raja Sekhar Reddy

IV B.Tech CSE

1011102026

E-mail:irsreddy26@gmail.com

• Introduction

• Existing Method

• Proposed Method

• Features

• Conclusion

Contents:

What is Security?

Why we need to provide Security?

How the security will be provided?

Introduction:

Encryption and Decryption:

• Confidentiality

• Integrity

• Authentication

• Non-repudiation

SECURITY SERVICES:

EXISTING METHOD:

The proposed method consists of

Encryption

Single round encryption

Key generation

Round function

Decryption

Single round decryption

Key generation

Round function

PROPOSED METHOD:

ENCRYPTION:

SINGLE ROUND ENCRYPTION:

KEY GENERATION:

ROUND FUNCTION:Selection inputs Round Function

S3 S2 S1 S0

0 0 0 0 F1

0 0 0 1 F2

0 0 1 0 F3

0 0 1 1 F4

0 1 0 0 F5

0 1 0 1 F6

0 1 1 0 F7

0 1 1 1 F8

1 0 0 0 F9

1 0 0 1 F10

1 0 1 0 F11

1 0 1 1 F12

1 1 0 0 F13

1 1 0 1 F14

1 1 1 0 F15

1 1 1 1 F16

DECRYPTION:

SINGLE ROUND DECRYPTION:

KEY GENERATION:

ROUND FUNCTION:Selection lines Round Function

S3 S2 S1 S0

0 0 0 0 F1

0 0 0 1 F2

0 0 1 0 F3

0 0 1 1 F4

0 1 0 0 F5

0 1 0 1 F6

0 1 1 0 F7

0 1 1 1 F8

1 0 0 0 F9

1 0 0 1 F10

1 0 1 0 F11

1 0 1 1 F12

1 1 0 0 F13

1 1 0 1 F14

1 1 1 0 F15

1 1 1 1 F16

FEATURES:

More secure

Key size will be 1024-bit

Plain text block size will be 2048-bit

Round function will be changed to round to round

The goal of the encryption algorithm designing is to frustrate the hackers andmakes the cryptanalysis difficult. The key value play more important role inencryption process. Altering each value of the plain text to get the final cipher textmake the cryptanalysis still more complex. The goal of the present paper is toincrease the security which makes complex to break. The round function andpermutation choices are not fixed, it is changed according to the user.

Conclusion:

Any Queries?

THANK YOU