Byte Rotation Algorithm
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This document proposes a new encryption algorithm called Byte Rotation Encryption Algorithm (BREA). BREA is a symmetric key, block cipher that encrypts fixed-length blocks of 16 bytes using byte rotation and a randomly generated 16 byte key matrix. It employs a multithreading model to encrypt blocks in parallel, improving encryption speed. The algorithm assigns numbers 1-26 to letters, adds the plaintext and key matrices, then rotates rows and columns before replacing values with letters to generate the ciphertext. BREA is designed to be faster and require fewer resources than previous algorithms while still providing secure encryption.
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![Steps
2/18/2017 7
1. The letters of the alphabet are assigned numerical
values from 1 to 26 in sequence i.e. A,B,C,D,…,Y,Z
assigned numerical values 1,2,3,….26 respectively.
2. The plaintext is partitioned into fixed-length
blocks of size 16 bytes (128 bits) each. These
blocks are represented by a matrix Mp.
3. The values of key matrix (K) are randomly selected
from the range 1 to 26. The size of key matrix is
equivalent to the block size of plaintext i.e. 16
bytes. K=[K1,K2,K3,………….K16].
4. Calculate the transpose matrix of plaintext block
matrix (MP), which is denoted by (MP)T.](https://image.slidesharecdn.com/presentaiton-170218073007/85/Byte-Rotation-Algorithm-7-320.jpg)
![References
2/18/2017 17
• [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.](https://image.slidesharecdn.com/presentaiton-170218073007/85/Byte-Rotation-Algorithm-17-320.jpg)
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- 1. A new approach towards encryption schemes: Byte- Rotation encryption algorithm 2/18/2017 1
- 2. Contents What is BREA? Previous used encryption algorithms BREA Algorithm Steps Example BREA with parallel encryption model Byte rotation with “CBC encryption algorithm” Advantages Future enchancement Conclusion Refrences 2/18/2017 2
- 3. What is BREA? oByte 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. oMultithreading is a technique at which a single set of code can be used by different processors at different stages of execution. 2/18/2017 3
- 4. Previous used algorithms oEarlier many researchers have proposed various encryption algorithms such as AED,DES, Triple DES,RSA, Blowfish etc. oSome of them are most popular in achieving data security at a great exent like AES and Blowfish. oWith increase in security level, the time and complexity of algorithm is also increased and this is the major cause of decreasing the speed and efficiency of encryption system. 2/18/2017 4
- 5. 2/18/2017 5 BREA Symmetric Key Algorithm Block Cipher Encryption
- 6. Byte Rotation Encryption Algorithm 2/18/2017 6 It is symmetric key block cipher algorithm Each block size of 16 bytes Size of Matrix is 16 bytes Value of matrix are randomly selected and are ranging from 1-26 Mono alphabetic substitution concept is followed Byte rotation technique is used
- 7. Steps 2/18/2017 7 1. The letters of the alphabet are assigned numerical values from 1 to 26 in sequence i.e. A,B,C,D,…,Y,Z assigned numerical values 1,2,3,….26 respectively. 2. The plaintext is partitioned into fixed-length blocks of size 16 bytes (128 bits) each. These blocks are represented by a matrix Mp. 3. The values of key matrix (K) are randomly selected from the range 1 to 26. The size of key matrix is equivalent to the block size of plaintext i.e. 16 bytes. K=[K1,K2,K3,………….K16]. 4. Calculate the transpose matrix of plaintext block matrix (MP), which is denoted by (MP)T.
- 8. Continue… 2/18/2017 8 5. Calculate the encrypted key matrix Ke using the following formula: Ke = K mod 2 6. Add both the matrices MPT and Ke and the resultant matrix is denoted by CPK. CPK = MPT + Ke 7. Rotate the first three rows horizontally of CPK matrix such that rotate one byte from first row, rotate two bytes from second row, rotate three bytes from third row and fourth remains unchanged. The resultant matrix is denoted by Chr. 8. Rotate first three columns vertically of Chr matrix such that rotate one byte from first column, rotate two bytes from second column, rotate three bytes from third column and fourth column remains unchanged. The resultant matrix is denoted by CVR.
- 9. Continue …. 2/18/2017 9 9. Replace numeric values of CVR matrix by their corresponding letters and if 36 exist in CVR matrix, it is replaced by special character #. The resultant matrix is denoted by Ce.
- 13. Byte rotation with “CBC encryption algorithm” 2/18/2017 13
- 14. 2/18/2017 14 Advantages Very Secure Require less computer resources No complex calculation Very Fast
- 15. Future Enhancement 2/18/2017 15 • The 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.
- 16. Conclusion 2/18/2017 16 • 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.
- 17. References 2/18/2017 17 • [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.