Asymmetric Cryptographic Algorithms For Key Exchange Protocols Essay

Security protocols are primarily & commonly used to protect communication via the web, VPNs (Virtual Private Networks) and the transferring of files. This report will now go on to compare two main security protocols – TLS & SSH. They will be compared in a way that takes into account both the similarities and differences in approach and features and their relative advantages and disadvantages. This information will then be backed up by examples where each protocol would be preferred to the other in a certain situation along with my own personal reasoning based on the research that has been carried out on my part.

With the ever increasing surge of digital communications and transactions, a tougher level of security is essential in order to safeguard the user and their data transactions. Systems, personal computers, mobile phones, servers, and even smart cards are all being used everywhere and there is a need to secure communications. With the influx of data management, there is a clear race between the two challengers in the game known as Information Security between developers and the hackers. PKI was designed to influence the Internet infrastructure for means of communication (Samuelle, 2011). While decreasing antagonistic misuse of data, reducing data theft, and providing an extra layer of trust through key pairs and

They addressed the SkNN problem under the following setting: the client has the ciphertexts of all data points in database T and the encryption function of T, whereas the server has the decryption function of T and some auxiliary information regarding each data point. Both methods [51, 98], however, are not secure because they are vulnerable to chosen-plaintext attacks. All the above methods also leak data access patterns to the server. Recently, Yao et al. [99] proposed a new SkNN method based on partition-based a Secure Voronoi Diagram (SVD). Instead of asking the cloud to retrieve the exact kNN, they required the cloud to retrieve a relevant encrypted partitionEpk(G) for Epk(T)such that G is guaranteed to contain the k-nearest neighbors of q. This work, however, solves the SkNN problem accurately by letting the cloud retrieve the exact k-Nearest Neighbors of q (in encrypted form). Additionally, most of the computations during the query processing step in [51, 99, 105] are performed locally by the end-user. That conflicts with the purpose of outsourcing the DataBase Management System (DBMS) functionalities to the cloud. Furthermore, the protocol in secure nearest neighbor revisited[99] leaks data access patterns, such

M2 – Explain the operation and use of encryption technique in ensuring security of transmitted information

Whitfield Diffie and Martin Hellman proposed a famous key exchange protocol in 1976 [16]. Diffie-Hellman key exchange (D-H), is a method for exchanging cryptographic keys that allow two parties to share public key for encrypting their messages over an insecure communication channel [16].

1. Existing framework propose a safe multi-proprietor information sharing plan. It suggests that any client in the gathering can safely impart information to others by the untrusted cloud.

During this time Richard has showed himself as a promising young specialist and researcher. His major specialization is Applied Mathematics and Computer Science, but as an exception for academic achievements, Alex was allowed by our faculty to write his projects and degree thesis in the field of Cryptography under Computer Security and Applied Algebra Department.

            In the past decade, rapid advances have been made in the field of cryptography.  These advances have brought considerable

PKI supports the distribution and identification of public encryption keys, enabling users and computers to both securely exchange data over networks and verifies the identity of the other party. It enhances the security of data by

Public key infrastructure, known as PKI supports the distribution and identification of public encryption keys which allows users and computers to securely exchange data over the internet and networks to confirm the identity of the other party. Without PKI, sensitive information can still be encrypted and exchanged, but there would be no assurance of the identity of the other party. Any form of sensitive data exchanged over the Internet is reliant on PKI for security.

While various security practices are in place that businesses can utilize, Public Key Infrastructure (PKI) has become a vital security foundation for Identity and management across the organizations. PKI empowers individuals and organizations to use various secure Internet applications. For instance, secure and lawfully restricting

From the viewpoint of data security, which has always been an important form of quality of service, Cloud computing surely poses new challenging security threats for number of reasons. Firstly, traditional cryptographic primitives for the purpose of data security protection cannot be straight accepted due to users loss control of data under cloud computing. Therefore, verification of correct data storage in the cloud must be attended without accurate knowledge of the whole data. Considering different kind of data for every user stored in the cloud and the requirement of long term continuous security of their data safety, the problem of checking correctness of data storage in the cloud becomes even more challenging.[1]

This paper tended to the configuration of secure direct system coding. What 's more, particularly, explore the system coding outline that can both fulfill the pitifully secure prerequisites and amplify the transmission

Authentication is the only method which protects information or data of an individual or organization from a second party to access. Based upon the confidentiality of that particular data or information, the level of authentication depends. Now-a-days, all this data and information what we are talking about is getting digitized all around the world. For this digitized data or information to be secure, a proper authentication procedure must be set. This arise the need for an authentication secret which belongs to the category “Something we know” to come into picture. These secrets authenticate each secret holder as the authorized legitimate user to access their particular account. Technology is

Asymmetric encryption is also known as public key encryption. This uses two keys for encryption and decryption of data. The two keys are the Public key which it can be shared with anyone and the other one is a Private key or secret key which should be kept secretly. Each user will have its own public key and private key. Let’s assume Alice and Bob are the sender and receiver. Alice(A) wants to send a message to Bob(B). Alice will first encrypt(E) the plaintext(M) with Alice’s public key and send to bob. Now Bob verifies Alice’s message by checking whether it is Alice’s digital signature and then bob decrypts(D) the key using the bob private key. This process will be the same if Bob sends Alice message.