Public-key cryptography

store and share data securely, efficiently, and flexibly with others in cloud storage. The costs and complexities involved generally increase with the number of the decryption keys to be shared. The encryption key and decryption key are different in public key encryption. Since we are proposing new era of Aggregate key cryptography. To produce constant length ciphertext is also one of important task that we have materialized. In this paper, we propose a simple, efficient, and publicly verifiable approach

Why of ECC? Elliptic curve cryptography (ECC) is a public key cryptography technique by making use of elliptic curve properties and their algebraic structure of over finite fields. It is one of the efficient ways of providing encryption of cryptographic keys. Elliptic curves as algebraic/geometric entities have been studied extensively for the past 150 years, and from these studies has emerged a rich and deep theory. Elliptic curve systems as applied to cryptography were first proposed in 1985 independently

rests in the option for various key lengths. It allows to choose 128-bit, 192-bit, or 256-bit key.it is exponentially stronger than the 56-bit key.it uses Permutation-Substitution that is, it involves a series of substitution and permutation steps to create the encrypted block. Substitution is simply a mapping of one value to another and permutation is the re-ordering of the bit positions for each of the inputs.there can be 2^128,2^192, 2^256 combinations of the key. Maximum amount of data that can

Vandani Verma Amity Institute of Applied Sciences, Amity University-125, Noida, UP-INDIA vandaniverma@yahoo.com Abstract: Self Proxy signature schemes enable us to save the user’s secret key from exposure as in self proxy signatures the signer designates proxy signing rights to him and generates a temporary key to sign the signatures. The paper proposes the first self proxy signature scheme based on the braid groups and analysis the security aspects also. Keywords: proxy signatures, braid group

Cryptography is the investigation of the strategies of mystery composing, particularly code and figure frameworks, systems, methodology, forms and so on. It is a strategy for putting away and transmitting information in a specific structure. The term is regularly connected with scrambling plain content into figure content likewise called encryption, then back again called as unscrambling. It is a method utilized in securing trustworthiness of electronic messages by changing over them into figure

H.C Hsiao, Y.H Lin, et al. [1] projected a study of user-friendly hash that describes some schemes which are quickest and most accurate. In this study, Chinese, Korean and Japanese characters are compared with each other for using them as hash values. It had described the strength and weakness of each scheme. Wang Qian, Cong Wang, Kui Ren, Wenjing Lou and Jin Li [2] explained regarding the storage service provider. Data Storage System would attempt to hide the errors like data lost during relocation

system is divided into 2 sections: The first section is known as front-end and another section is the back-end[5]. Front-end is through which client can access the cloud data. Back-end is collection of computers that provide services to client. Cryptography is a very basic technique for data security in Cloud Computing. So, we

Encryption is a cryptography in which one covers data or information by transforming it into an undecipherable code. Encryption generally uses a predefined parameter or key to perform the data change. Some encryption computations oblige the best approach to be the same length as the message to be encoded yet other encryption counts can take a shot at much more diminutive keys concerning the message. Separating is as often as possible described close by encryption as it’s backwards. Unscrambling of

Method for Obtaining Digital Signatures and Public Key Cryptosystems. About the paper: Public-Key encryption-system was first outlined by this paper. Public key encryption-system is still in wide use today, and known by the name (initials) of the paper’s three authors i.e. RSA. The paper presents an encryption method which is presented with the unusual property that publicly revealing an encryption key does not result in revealing the corresponding decryption key. It has two important consequences •

MGS655: Distributed Systems Final Project Report Mobile distributed Systems for secure communication Team: Saylee Joshi & Shrutee Patil Abstract: Wireless communication and mobility introduced a new paradigm in Distributed Systems. We examined short-range wireless data transmission using mobile agent (developed using Android OS). Presence of mobility in distributed systems introduces new challenges of reliable and secure communication. In this project, we propose a secure way of communication via