Kannan Balasubramanian

Researchers have developed many different types of software for implementing Cryptography algorithms. One such software is Cryptool. This software can be used to demonstrate many...

The integer factorization problem used in the RSA cryptosystem, the discrete logarithm problem used in Diffie-Hellman Key Exchange protocol and the Elliptic Curve Discrete...

Electronic commerce (or e-commerce) can be defined as any transaction involving some exchange of value over a communication network. This broad definition includes...

The concept of identity-based cryptography introduced the idea of using arbitrary strings such as e-mail addresses and IP addresses to form public keys with the corresponding...

Cryptography is a field that is constantly advancing, due to exponential growth in new technologies within the past few decades. Applying strategic algorithms to cryptic issues...

The concept of Identity Based Cryptography introduced the idea of using arbitrary strings such as e-mail addresses and IP Addresses to form public keys with the corresponding...

As more and more applications find their way to the World Wide Web, security concerns have increased. Web applications are by nature somewhat public and therefore vulnerable to...

Applications that operate on the Web often interact with a database to persistently store data. For example, if an e-commerce application needs to store a user's credit card...

The obvious risks to a security breach are that unauthorized individuals: 1) can gain access to restricted information and 2) may be able to escalate their privileges in order to...

The field of cryptography has seen enormous changes ever since the invention of Public Key Cryptography by Diffie and Hellman. The algorithms for complex problems like integer...

The integer factorization problem used in the RSA cryptosystem, the discrete logarithm problem used in Diffie-Hellman Key Exchange protocol and the Elliptic Curve Discrete...

Many variations of the Diffie-Hellman problem exist that can be shown to be equivalent to one another. We consider following variations of Diffie-Hellman problem: square...

This chapter focusses on Secure Key Exchange protocols executed among a group of parties, called group key exchange (GKE) protocols. Authentication and Key Establishment are very...

Cryptographic Hash Functions are used to achieve a number of Security goals like Message Authentication, Message Integrity, and are also used to implement Digital Signatures...

This chapter investigates the implementation attacks on cryptographic algorithms. The implementation attacks can be defined as invasive or non-invasive. The major attack types...

Homomorphic encryption is a technique that enables mathematical operations to be performed on encrypted data. This type of encryption can be used to perform operations on...

Zero knowledge protocols provide a way of proving that a statement is true without revealing anything other than the correctness of the claim. Zero knowledge protocols have...

Most of the voting protocols proposed so far can be categorized into two main types based on the approach taken: schemes using blind signatures and schemes using homomorphic...

To deal with active attacks in public key encryptions, the notion of security against an adaptive chosen ciphertext attack has been defined by Researchers. If an adversary can...

The goal of secure two-party computation is to enable two parties to cooperatively evaluate a function that takes private data from both parties as input without exposing any of...

The Secure Multiparty computation is characterized by computation by a set of multiple parties each participating using the private input they have. There are different types of...

The protection of Computer Hardware and Software using Cryptographic algorithms has assumed importance in the recent years. The Trusted Computing Group (TCG) has put forward...

Researchers have developed many different types of software for implementing Cryptography algorithms. One such software is Cryptool. This software can be used to demonstrate many...

The most prevalent need for multiple precision arithmetic, often referred to as “bignum” math, is within the implementation of public key cryptography algorithms. Algorithms such...

Most cryptographic systems are based on an underlying difficult problem. The RSA cryptosystem and many other cryptosystems rely on the fact that factoring a large composite...

At the time when RSA was invented in 1977, factoring integers with as few as 80 decimal digits was intractable. The first major breakthrough was quadratic sieve, a relatively...

The field of cryptography has seen enormous changes ever since the invention of Public Key Cryptography by Diffie and Hellman. The algorithms for complex problems like integer...

Technological advancements have led to many beneficial developments in the electronic world, especially in relation to online commerce. Unfortunately, these advancements have...

With the arrival of the internet, cell phones, e-mail, instant messaging and social networking sites we can do many wonderful things electronically now that make our lives easier...

Electronic commerce (or e-commerce) can be defined as any transaction involving some exchange of value over a communication network. This broad definition includes...

Digital money represents a new payment instrument for e-commerce. More than any other payment instrument, it demands development of a variety of new security techniques for both...

Although it is possible for a Web client to strongly authenticate a Web server and communicate privately with it (e.g., by using SSL and server-side certificates) not all...

Most merchant Web servers are contacted by completely unknown, often even anonymous, users. Thus they cannot generally protect themselves by demanding client authentication, but...

In this chapter, a detailed knowledge of some of the most devastating attacks against Web applications and common tools in the attacker's arsenal is discussed. There are many...

The design of a secure e-commerce website, involves process of grouping your systems together in common areas as defined by their requirements for security. These groupings or...

A DDoS attack attempts to reduce the ability of a site to service clients, be they physical users or logical entities such as other computer systems. This can be achieved by...

Securing payment information on the Internet is challenging work. With proper care, attention to detail, and selection and use of the right tools, e-commerce site administrators...

As more and more applications find their way to the World Wide Web, security concerns have increased. Web applications are by nature somewhat public and therefore vulnerable to...

Applications that operate on the Web often interact with a database to persistently store data. For example, if an e-commerce application needs to store a user's credit card...

The obvious risks to a security breach are that unauthorized individuals: 1) can gain access to restricted information and 2) may be able to escalate their privileges in order to...

Issues related to IPv6 transition security include transition strategies, tunneling approaches, and considerations on the potential abuse of transition mechanisms. There are...

The wireless metropolitan area networks (WMANs) based on the 802.16 technology have recently gained a lot of interest among vendors and ISPs as the possible next development in...

Many XML uses today need security, particularly in terms of authentication and confidentiality. Consider commercial transactions. It should be clear why purchase orders...