Informatics Publishing Limited

Rachna Singh Thakur ¹, Pragya Shukla ¹, Nilima Karankar ¹

Affiliations
1 Dept of CSE, IET Davv, Indore, IN

Abstract

As the rapid growth of information added in the World Wide Web the challenges are also increasing in the Focussed Crawler. In this paper we present a survey of Focussed Crawler approaches and their limitations which were published past few years.Also discussed the Focussed Crawler architecture and its type.By taken into account the challenges and issues of some approaches we proposed Focussed crawler algorithm for improving the relevance prediction.As a result search system which is a pre-evaluation of the search results omitted by the search engine is developed. In addition of that is a classification problem where the classification is performed for finding the most nearer URLs which contains the user interest data.

Keywords

Focussed Web Crawler, Search Engine, Uniform Resource Locator.

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Honey Kothari ¹, Pragya Shukla ², Nilima Karankar ²

Affiliations
1 Master of Engineering in Information Security from IET-DAVV, Indore (M.P), IN
2 Computer Engineering Department in IET-DAVV, Indore (M.P), IN

Abstract

Elliptic curve cryptography (ECC) is an algorithm based on the algebraic structure of elliptic curves over finite fields. It provides security to information using shorter keys than other known public-key crypto-algorithms without decreasing the security level. This makes ECC a good choice for the implementation in security services. This paper proposed a hybrid cryptographic approach for color images using ECC algorithm and some mathematical computations. It also compared the various existing image cryptographic techniques and the various issues involved. Regardless there are several related works in the literature, to our knowledge this is the first hybrid approach in order to encrypt and decrypt the color images using some mathematical computations.

Keywords

Cryptography, Decryption, Encryption, Image Encryption.

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Nilima Karankar ¹, V. Kapoor ¹

Affiliations
1 Institute of Engineering and Technology, IN

Abstract

In data communication, the digital signature and digital envelope are the two widely used techniques. Where digital envelope provides only confidentiality and digital signature provides non-repudiation, confidentiality and integrity. Digital envelope is using symmetric and asymmetric key cryptography but not providing all security features like authentication, non-repudiation and integrity. In order to achieve all security features, we have used MD5 with asymmetric and symmetric key cryptography. We have implemented a novel digital envelope technique which provides all security features at once. Novel digital envelope comprises of digital signature and best of both the world and providing security features like non-repudiation, authentication, confidentiality and integrity. We have used blowfish and RSA (Ron Rivest Shamir Adelman) algorithm in integration with MD5. In result, out integrated solution meets above mentioned requirement and it also removed the deficiency of current digital envelope technique and strengthen the security of ad-hoc network, Wireless sensor network, Wireless network.

Keywords

Encryption, Decryption, Integrity, Confidentiality, Message Digest 5 (MD5), Authenticity, Non-Repudiation, Blowfish, Ron Rivets Shamir Adelman (RSA).

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