BYTE ROTATION ENCRYPTION ALGORITHM

Presented By:-SHIKHA JAIN

M.Tech (CS)

CONTENTSIntroductionWhat is BREA?BREA AlgorithmExampleBREA with ”Parallel Encryption Model”Byte Rotation with “CBC Encryption Algorithm”AdvantagesFuture EnhancementConclusionReferences

What is BREA?

Byte Rotation Encryption Algorithm(BREA) (developed in 2012) is a Symmetric key Block Cipher Algorithm which is applied on different blocks of plaintext and executes in parallel manner through multithreading concept of single processor system.

BREASymmetric Key Algorithm

Block Cipher Encryption

BYTE ROTATION ENCRYPTION ALGORITHM

It is a Symmetric Key Block Cipher Algorithm.

Each block size is of 16 bytes.

Byte-Rotation technique is used.

Mono alphabetic substitution concept is followed.

Value of matrix are randomly selected and ranging from 1 to 26.

Size of matrix is 16 bytes.

Example

R A Y MO N D SU I T IN G S 0

M=

18 15 21 141 14 9 725 4 20 1913 19 9 0

1 1 1 10 1 1 01 0 0 11 0 0 0

25 15 3 920 7 13 85 18 22 1721 12 26 24

18 1 25 1315 14 4 1921 9 20 914 7 19 0

19 16 22 151 15 10 726 4 20 2014 19 9 0

Cpk=K=Mp=

Ke=MpT=

RAYMONDSUITINGS

Ke =Kmod2Transpose matrix

Substitute numeric values of letters

Cpk=MpT + KeK=Random(1,26,16)

Example

19 16 22 151 15 10 726 4 20 2014 19 9 0

Cpk=

16 22 15 1910 7 1 1520 26 4 2014 19 9 0

J Z I ST S O ON V A TP G D 0

10 26 9 1920 19 15 1514 22 1 2016 7 4 0

16 16 22 1510 15 10 720 4 20 2014 19 9 0

Cvr=Chr=

Ce=Chr=

The cipher texts block Ce and Key matrix K sends to

the recipient.

BREA with “Parallel Encryption Model”

Byte Rotation with “CBC Encryption Algorithm”

Cipher Block Chaining (CBC) uses feedback to feed the result of encryption back into the encryption of next block. The plain text is XOR’ed with the previous cipher text block before it is encrypted. The encryption of each block depends on all the previous blocks.

Block Cipher

Encryption

Block Cipher

Encryption

Cipher text

Key

Cipher text

Key

InitializationVector (IV)

PlaintextPlaintext

Advantages

No complex calculations

Very fastRequire less computer resources

Very secure

Future EnhancementThe system can be easily modified to accept any encryption algorithm which would be framed in future. Moreover, currently concentration on the next work which adopts Parallelism through multiprocessor system where various encryption algorithms can run in parallel environment which enhances the performance and speed of Encryption/Decryption process.

Conclusion

The concept of block wise parallel encryption using multithreading technique enhances the speed of encryption system. The system which use “BREA” provides enough security. Thus the system is justified for its use in securing files.

References[1] MAHENDRAN R “BYTE ROTATION WITH CBC ENCRYPTION ALGORITHM” International Journal of Machine and Construction Engineering Volume 1 Issue 1 Aug 2014.

[2] Nidhi Gouttam “Implementation Of Simulation Of Byte Rotation Encryption Algorithm” INTERNATIONAL JOURNAL OF TECHNOLOGY ENHANCEMENTS AND EMERGING ENGINEERING RESEARCH, VOL 2, ISSUE 5 ISSN 2347-4289

[3] Sunita Bhatti & Prof. S. K. Sharma, “Block Wise Parallel Encryption through Multithreading Concept”, Research Paper published in Aishwarya Research Communication Journal (ISSN: 0975-3613) Vol. 3, August 2011

[4]W. Stallings, Cryptography and Network Security: Principles and Practice 3/e. Prentice Hall.

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