Informatics Publishing Limited

Y. M. Rajashri ¹, D. K. Nayana ¹

Affiliations
1 Department Electronics and Communication, Reva Institute of Technology and Management-REVAITM, Bangalore, IN

Abstract

Identity-based cryptography (IBC) is a type of public key cryptography which a publicly known string representing an individual or organization is used as a public key. The public string could include an email address, domain name, or a physical IP address. IBC has been introduced into Peer-to-Peer (P2P) networks recently for identity verification and authentication purposes. IBC uses user's identity as public key and private keys are issued by key generate center (KGC) after verifying the user's credentials. In current IBC-based solutions issuing of the private keys are not secured. In this paper we propose a secure keying using a secret sharing technique for an IBC based peer to peer network. Where a peer can select the level of security required depending on the importance of the message. This consists of an IBC infrastructure setup phase, a peer registration phase, a secure keying phase and system maintenance phase. These phases make use of a key generation center (KGC) and key privacy authorities (KPAs) to issue private keys to peers securely in order to enable the IBC systems to be more acceptable and applicable in real-world P2P networks. Secret sharing technique used in this project prevents the collusion attacks and denial of service. The theoretical analysis and experimental results show that Secure Keying in Peer Network using this Secret Sharing Technique performs efficiently and also able to support large scale networks.

Keywords

Identity based Cryptography, Secure Keying.

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K. Shashi Raj ¹, D. K. Nayana ¹, S. S. Manvi ², K. Vivek Raj ³

Affiliations
1 Department of Electronics and Communication Engineering, REVA Institute of Technology and Management, Katigenahalli, Yelahanka, Bangalore, Karnataka-560064, IN
2 Department of Electronics and Communication Engineering, REVA Institute of Technology and Management, Katigenahalli, Yelahanka, Bangalore, Karnataka-560064, IN
3 Department of Electronics and Communication Engineering, Auden Technology and Management Academy, Vaderahalli, Bangalore, Karnataka-562112, IN

Abstract

From the viewpoint of modern control theory, soil-plant-water is concerned with a complicated system. Thus, precision irrigation needs all kinds of advanced techniques to archive high efficiency of water resource. This paper presents an irrigation system, which includes moisture sensor, temperature sensor, light sensor, modbus protocol, RS-485 bus, remote control and distributed control. In particular, authors developed the complete irrigation system, including soil moisture sensor. Hardware and software architecture of embedded web servers is analysed and the experimental results of monitoring and control of laboratory greenhouse is presented. The system also timely updates the conditions of the plants environment timely to the user through SMS using GSM technology. GSM modem can be controlled by standard set of AT (Attention) commands. These commands can be used to control majority of the functions of GSM modem.

Keywords

Embedded Web Server, CDMA, GSM, Modbus Protocol, Greenhouse, Internet, Networked Embedded Systems, TINI.

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K. Shashi Raj ¹, D. K. Nayana ¹, S. S. Manvi ¹

Affiliations
1 Department of Electronics and Communication Engineering, REVA Institute of Technology and Management, Kattigenahalli, Yelahanka, Bangalore, Karnataka, 560064, IN

Abstract

As we know that Cultivating some plants and flowers in a closed environment requires precise control of Humidity, Temperature, Light Intensity and becomes risky and difficult. So if we automate this process by using sensors and actuators whose settings are set accordingly by the user then the work and burden of the farmer gets reduced to maximum extent. In this paper we are designing this system, where we place a slave device in the land slots which acquire the data and send it to one main master device. The slave and master communicates through RS485 network using modbus protocol which is cheap and yet effective. So that the user can monitor and control each and every node from the master itself. The master also timely updates the conditions of the plants environment timely to the user through SMS using GSM technology.

Keywords

GSM, Irrigation, LPC2148 Arm7 Microcontroller, Modbus Protocol, RS485, SMS.

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G. Chaithra ¹, D. K. Nayana ¹

Affiliations
1 School of Electronics and Communication Engineering, REVA ITM, Bangalore, IN

Abstract

In digital signal processing, computer graphics, communication and cryptography Reversible or information-lossless circuits have gained better applications. Reversibility plays a prominent role when energy efficient estimates are considered. Reversible logic is used to minimize the power dissipation that occurs in conventional circuits by preventing the loss of data. This paper proposes a reversible design of an ALU. This ALU consists of eight operations, five logical operations and three arithmetic. The performed logical operations includes NOT, OR, AND, XOR and NAND and the arithmetical operations includes addition, multiplication, subtraction. All the modules are being designed using the basic reversible gates. The Area, power and delay analysis of the proposed module is achieved and a comparison with the conventional circuits is also carried out. We will design the ALU Design with the help of Verilog HDL and Simulated by Modelsim 6.4a Software. The Proposed ALU Design is synthesized by Xilinx and Implemented in to FPGA Spartan 3.

Keywords

ALU, Reversible Logic, Submodules, Area, Delay, Power.

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