secure and authenticated way with an expense less than that required by signature then encryption?”. This was for the first time, since public-key cryptography has been invented, that the question is addressed in literature. He discovered a new cryptographic primitive, called signcryption, which simultaneously fulfills both the functions of digital signature and public key encryption in a logically single step, and with a cost significantly smaller than that required by signature then encryption. The proposed
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CHAPTER 1 INTRODUCTION 1.1 OVERVIEW OF ONLINE SHOPPING ONLINE SHOPPING is a web-based application Software Developed in IMB WEBSPHERE using JSP as front end on Pentium machine. The main aim of Online Shopping is to improve the services of Customers and vendors. It maintains the details of customer payments, product receipts, addition of new customers, products and also updating, deletion for the same. It also stores the details of invoices generated by customer and payments made by them with all
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I. ------------------------------------------------- Chapter 2: Context and Background I n this chapter, we introduce the main concepts related to the problem we are addressing, in order to provide the casual reader with the necessary background information for this dissertation. As the title of this thesis is “Analysis of Security and QoS in Network with time constraints”, it is clear that our work requires a deep understanding of three main topics: security, Quality of Service (QoS) and network
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date. When a symmetric encrypted key is used, both parties share the same key to both encrypt and decrypt data. Since symmetric encryption's use-case is to share information between users, each has to posses a shared key. Although a symmetric key requires less computer resources, is simplistic and easy to understand, the utmost security measures should be set in place to ensure the safety and secrecy of the shared key by all collaborators. Should the key become compromised in some way, all sensitive
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special algorithm in accordance with the given key (a kind of a password). There are two types of cryptooperation in cryptology: symmetrical and asymmetrical. The first is sometimes called “a one-key cipher” or a cipher with a secret key. Symmetry lies in one secret key used for encryption and deciphering of one message. Symmetrical ciphers are best suited for cases when computer information is just stored on the hard disk, floppies or other mediums. One-key ciphers are very foolproof, but are rarely
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Network Assignment #2 1. Compare Peer-to-Peer against Client server Networks. Discuss (briefly) the differences using the following factors: a. Security: Peer-to-Peer does not provide the security available on a client/server network but a client/server has its resources centralized which mean resources and data security are controlled through the server. b. Complexity: Peer-to-Peer only required two computers connected together however client/server required special
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SQL Server 2012 Security Best Practices - Operational and Administrative Tasks SQL Server White Paper Author: Bob Beauchemin, SQLskills Technical Reviewers: Darmadi Komo, Jack Richins, Devendra Tiwari Published: January 2012 Applies to: SQL Server 2012 and SQL Server 2014 Summary: Security is a crucial part of any mission-critical application. This paper describes best practices for setting up and maintaining security in SQL Server 2012. Copyright The information contained in this document represents
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1. What are some threats associated with a direct digital signature scheme? a. The scheme validation is dependent on the security of the sender’s private key, which the sender can later claim lost or stolen and that the signature was forged when trying to deny sending a particular message. b. If a private key is stolen from Bob at time t, the thief can send a message signed with Bob’s signature with a time stamp equal to or less than t. c. The need for trust between 2 participants is a potential
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Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI (Continued) The information in this guide is not validated by Oracle, is not supported by Oracle, and should only be used at your own risk; it is for educational purposes only. 12. Create "oracle" User and Directories Perform the following tasks on both Oracle RAC nodes in the cluster! In this section we will create the oracle UNIX user account, recommended O/S groups, and all required directories. The following O/S groups
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Elliptic curve cryptography is a public key cryptographic method. It is a cryptographic method based on elliptic curves over finite fields. The elliptic curves defined over finite fields are used in elliptic curve cryptography since a practical digital system can handle only finite number of values. In finite fields the binary extensions fields are ideal, because of the ease with which they can be implemented in a digital system in comparison with other finite fields. The main advantage of elliptic
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