Public Key Cryptology – An Art of Keeping Secrecy and Authenticity

Computer systems have undoubtedly become universal in today's world, and also, therefore, a lot of this info is made digital. Additionally, with the advancement of the internet, this relevant information is currently circulated. Licensed individuals can easily now send and also fetch info coming from a distance making use of a local area network. Although the three above mentioned security objectives-confidentiality, honesty and also accessibility-still stay of prime usefulness, they currently have some brand new dimensions. Indeed, not only carry out the pcs consisting of the information need to have to be safe, the network additionally needs to have to be just as safe and secure. This paper provides a study on cryptographic principles and cryptographic models. 5733 information in the cloud are certainly not assured. The paper concludes by mentioning that much job needs to have to become done for a trusted public cloud setting to become a reality. Software-Defined Social Network, which is a brand-new approach to designing, building as well as dealing with systems. It splits the network's control (brains) as well as forwarding (muscle mass) aeroplanes to make it less complicated to improve each. In this unique atmosphere, an Operator works as the "human brains," providing a theoretical, centralized perspective of the entire network. Through the Operator, network managers may rapidly as well as conveniently make as well as push out choices on how the rooting units (changes, routers) of the forwarding plane will deal with the website traffic. The paper concedes that SDN is capable of assisting the compelling attributes of potential network functionalities and reasonable requests while decreasing operating costs through streamlined hardware, program, and also control. Nevertheless, several problems in the place of efficiency, scalability, security, as well as interoperability, need to have to become gotten rid of.

International Journal of Advanced Research in Computer Science, 2015

Public key cryptosystems came into force because of the problems associated with symmetric encryption. Plaintext, encryption algorithm, public and private key, decryption algorithm and ciphertext are five components of a public key cryptosystem. The more likely way for the world to be destroyed. Most experts agree is by accident. There is where we come in; we are computer professional: we cause accidents, by Nathaniel Borenstein Keywords: symmetric; algorithm; cipher; message; cryptosystems; decryption; encryption;

From September 25th till September 30th, 2011, the Dagstuhl Seminar 11391 about "Public-Key Cryptography" took place at Schloss Dagstuhl. The meeting hosted 33 international researchers and incited active discussions about recent developments in this area. Seminar 25.-30. September, 2011 -www.dagstuhl.de/11391 1998 ACM Subject Classification D.4.6 Security and Protection

Cryptography techniques play an important role in modern world. The purpose of such techniques is to ensure the contents being unreadable to anyone except for parties who agreed to use some specific scheme. Moreover, current cryptography techniques provide more sophisticated services, such as message integrity, authentication, time stamping, and many others. There are two main approaches for cryptography: private-key cryptography and public-key cryptography (PKC). In this paper we focus on PKC techniques giving a comparison between three main techniques, namely, Public key Infrastructure (PKI), Identity- Based Cryptography (IBC) and Certificate less Public Key Cryptography (CL-PKC). In this research, a brief definition, advantages and disadvantages and analysis of main problem, namely, the revocation problem, are introduced for the three techniques. Also, a variety of available solutions to overcome the revocation problem in each technique are highlighted. Finally, some common applications and schemes for each technique are summarized.

International Journal of Psychosocial Rehabilitation

Cryptography plays a vital role in securing data for IT infrastructure by enabling an adequate level of security to the business. The increased significance of security in the IT infrastructure has raised the demand for public key cryptography. Public key cryptography eliminates the primary concern in private key cryptography, i.e. exchanging the key between the sender and the receiver by having a pair of keys. Public key cryptography enables the exchange of the key even in an unsecured network. After the introduction of public key cryptography, this type of cryptography is the best solution in securing the transmitted data between the sender and the receiver. However, there are vulnerabilities in this type of cryptography that both the sender and the receiver need to know. This research is focused on determining the vulnerabilities of public key cryptography. It also emphasizes how security specialists can overcome these vulnerabilities in public key cryptography.

Viele haben auf die eine oder andere Weise dazu beigetragen, dass diese Dissertation so entstehen konnte, wie sie nun vorliegt. Der Versuch einer vollständigen Aufzählung müsste scheitern; hier seien zunächst die erwähnt, die nicht mit Namen genannt werden können, weil sie als anonyme Gutachter für Konferenzen tätig waren und dabei Anregungen zur Darstellung einiger der hier präsentierten Ergebnisse beigetragen haben. Außerdem zu nennen ist David Hopwood, der in einer früheren Fassung der Ausführungen zur beweisbaren Sicherheit des Mix-Verfahrens (hier in Abschnitt 4.2) eine Lücke aufgespürt hat. Prof. Johannes Buchmann hat es auf bemerkenswerte Weise verstanden, die Arbeitsbedingungen zu schaffen, in denen diese Dissertation gedeihen konnte, und hat wertvolle Anregungen geliefert. Auch alle anderen am Fachgebiet Theoretische Informatik hatten teil daran, eine angenehme und fruchtbare Arbeitsatmosphäre zu schaffen. Danke!

This paper shows four models of Public Key Cryptography (PKC) that doesn't use or simplifies the use of Public Key Infrastructure (PKI): ID-Based, Self-Certified, Certificateless and Certificate-Based. These models are showing on operations and properties. At the end there is a comparative table that summarizes the main characteristics.

De Gruyter eBooks, 2020

Branches of Cryptology 1.1.1.1 Introduction Cryptography is essential to providing security. In this chapter, the basic cryptographic concepts and terminologies are introduced. These concepts and terminologies will be used in different contexts in the following chapters. 1.1.1.2 Cryptology Although cryptography is the main point of discussion in this chapter, there is a more generic umbrella term, called cryptology, which can be further split into cryptography and cryptanalysis. 1.1.4.1 Key Pair for Asymmetric Cryptography Key pair is a pair of related keys, called private and public keys, for asymmetric cryptography. The private key defines the private transformation and the public key defines the public transformation [4]. 1.1.4.2 Private Key Private key is the key of an entity's asymmetric key pair which should only be known to and used by that entity [5]. A private key is solely reserved for that entity and should not be made public, hence the name. 1.1.4.3 Public Key Public key of an entity's asymmetric key pair can be made public [5]. However, as the key is intended to be made public, it must fulfill certain conditions listed below:

Network security is an important aspect of information sharing. Attempts have been made to remove various insecurities over internet. For this, many technological implementations and security policies have been developed. The amount of data, transferred, is not a factor. The basic factor is, how much security, the channel provides while transmitting data. Cryptography is one such technique, which allows secure data transmission without losing its confidentiality and integrity. Based on the key distribution, cryptography is further classified into two major types-Symmetric Key Cryptography and Asymmetric Key Cryptography. In this paper, we have surveyed the traditional algorithms, along with the proposed algorithms based on their pros and cons, related to Symmetric and Asymmetric Key Cryptography. We have also compared the importance of both these cryptographic techniques. The proposed algorithms proved to be highly efficient in their respective grounds but there are certain areas that remained open, related to these algorithms, and have not yet been thoroughly discussed. This paper also presents an appropriate future scope related to these open fields.

Asymmetric key encryption is also called public key encryption. It uses two keys known as a public and a private key. Data encrypted with one key can be decrypted only with the other key. This paper discusses some public key algorithms and its advantages and disadvantages such as Rivest Shamir Adleman, Diffi-Hellman, Elliptic Curve Cryptography, Elliptic Curve Diffi-Hellman, ElGamal Encryption Algorithm, Knapsack Algorithm, Digital Signature Algorithm and Short Range Natural Numbers.