Arm recognition encryption by using aes algorithm

IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 03 Issue: 03 | Mar-2014, Available @ http://www.ijret.org 65
ARM RECOGNITION: ENCRYPTION BY USING AES ALGORITHM
Shraddha Satish Kashid1
, Nagnath Hulle2
1
Student, Electronics & Telecommunication, G.H.R.C.O.E & M, Ahmadnagar, Maharashtra, India
2
Professor, Electronics & Telecommunication, G.H.R.I.E.T, Pune, Maharashtra, India
Abstract
To provide the security of the Military confidential data we use encryption algorithm which take over reward of superior encryption
algorithm. The proposed implementation using encryption algorithm was implemented on ARM 7 to encrypt and decrypt the
confidential data on data storage devices such as SD card or Pen drive. The main objective of proposed implementation is to provide
protection for storage devices. The ARM and encryption algorithm protect the data accessibility, reliability and privacy successfully.
Since (AES) Advanced Encryption Standard algorithm is widely used in an embedded system or fixed organization. These AES
algorithms are used for proper designs in defense for security.
Keywords: Plain text, Cipher text, Data security, AES, Embedded System.ARM, storage device.
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1. INTRODUCTION
An approach of cryptography is the best way on our processor
based communiqué system instead of conservative systems.
Since such type of systems are not viable to contribute a
universal mainframe. It is an alternative system to low priced
and transportable systems to make sure for communication
protection. By the varieties of power driven or motorized an
embedded systems be able to ASIC, Digital Signal Processing
(DSP) or Microcontroller. There are many trendy embedded
work station so as to have a lion‟s split of the promotes. But
the ARM7 is the widely used because of their less power
utilization, has less price in market, under sized body shape
[1].
A variable input in addition to building block dimension there
is a symmetric block cipher called Rijindael. There are two
Belgian cryptographers Vincent Rijmen and Joan Daemen.
Since, Rijindael made up through two Belgian cryptographers
Vincent Rijmen and Joan Daemen. In the year 2001, National
Institute of Standards and Technology (NIST) won the
Advanced Encryption Standard collection, which is known as
AES. According to NIST the assortment of AES be completed
on the platform as security, performance, efficiency,
flexibility, and put into practice aptitude. In November2001,
the elected algorithm, viz., Advanced Encryption Standard
(AES), have replace DES and published as FIPS197 [2].
AES is demanding in implementation of Hardware and
Software. Implementation of Hardware is ordinary into
elevated rate function [3]. For embedded system application
most required or highly popular implementation is Hardware
implementation. The performance of software implementation
is not so faithfully fast, it is so sluggish and taking long
processor time, that becomes the system more leisurely.
For AES implementation purpose in market there are various
hardware platforms are available which is based on mostly
processors or controllers among 8-bit terms to16-bit terms. By
using a large bit processor or controller for the implementation
of AES becomes a system more exclusive with high ending
operations.[4] whereas implantation by using 8-bit processors/
controllers are very sophisticated and used for minimum cost
and for low end applications. By using KEIL as a compiler
tool on ARM processor LPC2148 is we proposed in this paper.
The processor which we are using in this implementation is
also capable of time measurement, means the time necessary
for implementation of key opening out for various cycles of
AES is deliberated. The time required for Encryption and
Decryption is also calculated by ARM processor. Embedded C
is using for coding of AES.
Fig.1 General View of Secured Data Navigation

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2. RELATED WORK
The algorithm is flexible in supporting any combination of
data and key size of 128, 192, and 256 bits. However, AES
merely allows a 128 bit data length that can be divided into
four basic operation blocks. These blocks operate on array of
bytes and organized as a 4×4 matrix that is called the state. As
AES has been invented according to investigation by Rijndael.
In the literature many researchers used different approaches
have been used for the implementation on the basis of
different technical acceptations which may be like AES
strength execution, AES for efficiency or effectiveness
execution, AES by hardware and software implementation and
all that. This section referred to ideal standard identifications
on the target for evaluation achievement stages of AES
optimization.
Ashruf.et.al in [7] have implemented AES in Molen hardware
like Field Programmable Gate Array (FPGA) and General
Purpose Processors (GPP) merging together to form Molen
processor. The processor by using Molen hardware
implementation architecture gives result as fast as poor FPGA.
FPGA has highest velocity and more flexibility. The
implementation of Molen hardware is only depends on its size
rather than its cost.
The researcher T.Ravichandra Babu [9] implemented AES
algorithm onto ARM processor platform. According to this
implementation, shift Rows and Substitute byte (sub byte)
operations is implemented on software. Whereas, on hardware
Add Round Key operation and Mix Column operations
performed. Therefore, Hardware and Software execution of
AES have completed.
K.Atasu et al [11] include memory and speed efficiency
optimized AES implementation. They open for us the Mix
Column concept by focusing speed optimization on linear
integration component. They proposed a new combine
approach in this paper. It uses standard approach for the
encryption [2] and the transposed approach [8] for decryption.
That gives an excellent performance than the uncontaminated
approach of standard and transposed.
3. AES ALGORITHM
All Rijndael was deliberate to contain the subsequent
characteristics
• Resistance alongside every recognized attack.
• Speed and code density on a extensive series of platform.
• Devise effortlessness.
AES is a symmetric building block secret message by means
of block measurement lengthwise of 128 bits. It allows three
different key lengths 128,192 and 256 bits.
In encryption process; for processing of 128 bit keys required
10rounds, 192 bit keys required 12 rounds and 256 bit keys
required 14 rounds. AES is a in a circle based algorithm. For
encryption and decryption, every series have four functions
apart from previous surrounding (Last round necessary three
functions).
The encryption algorithms have four encircling functions Sub
Byte, Shift Rows, Mix Column (misplaced in last round) and
Add Round Key.
The decryption furthermore have the identical numeral of
rounds through overturn conversion, sort of in circles purpose
is diverse i.e. InvShiftRow, InvSubByte, AddRoundKey and
InvMixColumn (absent in last round) [3][4]. TABLE I shows
number of AES parameters for the accepted three AES
versions.
Table 1: AES Parameters
PARAMETERS AES-256 AES-192 AES-128
Number of rounds 14 12 10
Plaintext box
size(Bits)
128 128 128
Key size(Bits) 256 192 128
According to Rijndaels research they found very big criteria
using very low memory aspects in a constrained space
location, across a wide range computing surrounding hardware
and software. Rijndael is a superior victor during
incorporation hardware and software do not having any feed
backing or non- feed backing surroundings.[6] against energy
and timing. Initially we transferred the input bit data in byte
sequence at sender side. Then in next pace built a array of the
two dimensional bytes. Which is also known as it‟s State. This
array having four bytes rows individually. All Cipher and
Inverse Cipher operations also mean the International
operations are performed in a state array of the AES
algorithm. Essentially, AES algorithm leaning four byte
transformation at sender side (for encryption of data) and
opposite transformation (inverse) at receiver side (for
decryption of data) respectively
a) (S-box): Byte replacement using substitution box table.
b) (Row transformation): Shifting rows of the state array
using dissimilar offsets.
c) (Mixing columns): Mixing all the data inside every column
of the state array.
d) (Add round key): Adding a round key to the state.
The fig.1 shows AES Rijndael Encryption and Decryption
structure, where the input to the encryption and decryption
algorithm is 128 bit block. The key provided is expanded into
an array of forty - four 32 bit words, w[i].

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Fig 2: Encryption Side
Fig 3: Decryption Side
4. PROPOSED MODEL SYSTEM
Fig 4: Encoder System
Fig 5: Decoder System
As the name of the project suggests we are making an
encryption and decryption system for military application.
The project consists of mainly 2 parts:
4.1 Encoder Unit
This section consists of a master pc terminal on which we are
developing our own vb s/w. The vb s/w is used to encode the
frame and send the encoded frame to the master
Microcontroller. The master Microcontroller then stores this
encoded frame to the SD card in a text format.
4.2 Interfacing of ARM LPC 2148 Board and
Computer
The RS232 port of computer is connected to RS232 Port0 of
ARM LPC2148 boards. The AES encryption and decryption
code is dumped onto ARM through RS232 port by using a
flash burner called Philips flash utility V2.2.3.
4.3 Decoder Unit
In this section the user has to insert the SD card into the SD
card slot connected to the Microcontroller. The
Microcontroller then reads the encode frames from SD card
and decodes the frame by applying the AES algorithm. Then
finally the encoded frame is displayed on LCD. The decoder
Microcontroller decodes the no of steps the motor is supposed
to move after the decoding is over the decoder unit
Microcontroller turns the motor based missile model giving us
the exact position of missile.
This system basically consists of SD card interface, LCD
display and the dc motor for missile navigation.

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4.4 Interfacing of ARM LPC 2148 Board and Pen
Drive.
The RS232 port0 of ARM LPC 2148 is connected to RS232
port of Pen drive. The SD card is controlled by ARM through
AT commands. The important AT commands are as follows:
 AT- It used to check communication between Pen drive
and ARM
 ATE0-Command Echo
 AT+CMGF-This command is used to set the SMS
mode. Either text or PDU mode can be selected by
assigning 1 or 0 in the command
 AT+CMGS-This command sends a short message from
the modem to the network
 AT+CMGR-Read message
 AT+CMGD-This command deletes a message from the
location from SIM storage.
Fig.6: Plain Text during Encryption
Fig.7: Plaintext during Decryption
Here we write the GUI code in visual basic. Which relatively
contain two windows namely sending window and receiving
window respectively? Above fig.5 shows the data of any kind
e.g. „128 AES algorithm‟ which is send during encryption.
After sending this data by the sender at the receiving end this
encrypted data is converted through plain text by AES
decryption. At sender side the encrypted data LCD shows the
cipher text message while at receiver side the LCD shows the
plaintext message at the ending.
5. CONCLUSIONS
Implementation of ARM Recognition Encryption By Using
AES Algorithm on embedded platform is presented in this
paper. According to the previous research work the researcher
was used the the separate memory for hardware and software.
For the implementation of shift rows and substitute byte on
software and add round keys and mixed column operations on
hardware. But in this proposed work we implemented both on
hardware. That increases the speed and effective area and
decreases time for implementation. That makes the system
more reliable and reducing its cost.
ACKNOWLEDGEMENTS
I would like to thank all mighty for the successful completion
and moreover the teaching staff of the college for their
persistence in keeping me on schedule and quality. I am
thankful to my seminar guide Prof. Nagnath Hulle, for his
active involvement and guidance throughout the seminar
work. I would like to thank many other individuals from
department, including our respected M.E coordinator
Prof.V.Bhope who contributed greatly to this seminar work
and provided us all the proper facilities. I would also like to
thank our respected principal sir for providing us good
infrastructure and all amenities. Sincere thanks to the
management and the lab attendants for their full cooperation
throughout the seminar work. Last but not the least my friends
and my family for their continuous support and
encouragement.
If I forget to give thanks as well as if I forget to mention
reference name of anybody in reference list I apologies for
that.
REFERENCES
[1]. N. Sloss, D. Symes, and C. Wright, ARM System
Developer‟s Guide, Designing and Optimizing System
Software, Morgan Kaufmann, 2004.
[2]. Journal of research of the NIST, volume 106, November
3, May- June 2001
[3]. NIST, Advanced Encryption Standard (AES), (FIP PUB
197), November 26, 2001.
[4]. J. Daemen and V. Rijmen, AES Proposal: Rijndael
(Version 2). NIST AES

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[5]. UM10120 LPC2131/2/4/6/8 User manual File Format:
PDF/Adobe AcrobatNumerous editorial updated throughout
the user manual. 02. 2006.09.18. Updated edition of the User
Manual covering both LPC213x and LPC213x/01 devices. For
www.nxp.com/documents/user manual/UM10120.pdf
[6]. M. McLoone, J. McCanny, “High Performance Single-
Chip FPGA Rijndael Algorithm Implementations,”
Proceedings Cryptographic Hardware and Embedded Systems
Workshop, CHES, Paris, May 2001
[7]. R. Ashruf et al, Reconfigurable Implementation for the
AES Algorithm, Delft University of Technology, Netherlands,
2005.
[8]. G. Bertoni, L. Breveglieri, P. Fragneto, M. Macchetti and
S. Marchesin, “Efficient Software Implementation of AES on
32-bit Platforms,” CHES 2002, LNCS 2523, pp. 159–171,
2003.
[9]. T.Ravichandra Babu, K.V.V.S.Murthy, G.Sunil , “AES
Algorithm Implementation using ARM Processor”,2nd
International Conference and workshop on Emerging Trends
in Technology (ICWET) 2011.
[10]. B. Gladmans, A specification for Rijndael, the AES
Algorithm. Available at http://fp.gladman.plus.com, May
2002.
[11]. K. Atasu et al, Efficient AES Implementation for ARM
Based Platforms, ACM, 2004 Philips LPC2131, LPC2132,
LPC2134, LPC2136, LPC2138 Data Sheet.

Arm recognition encryption by using aes algorithm

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Arm recognition encryption by using aes algorithm