Public-key cryptography

Certification Authority(CA):A certification Authority which is having private and public key pairs and trusted by sensors.The role of the CA in this process is to guarantee that the individual granted the unique certificate is in the fact who he or she claims to be. External Agent(EA):External Agent is an entity who tries communicate with the WSN.External agent agent also has a private and public key pair and the public key must be certified the CA. Base station(BS):A Base station is a signal…

shared. Passwords should not be something simple that are easily guessable. Another smart idea is to change passwords every once in a while just to be extra cautious. Public wifi is a hacker hub. Hackers break into the database and could potentially steal data off of the computer when it connects to the wifi network. When using public wifi, it is important not to conduct important business such as financial…

difficulty of using PGP encryption, and its limitation. What is PGP encryption and how does it work? PGP is an abbreviation for “Pretty Good Privacy.” It is a hybrid encryption since PGP is a combination of some best features of both original and public key cryptography. If you encrypt the plaintext using PGP, it firstly compresses the plaintext and by data compression, modem transmission time and disk space are saved. Also, data compression strengthens cryptographic…

initiated solid market demand for secured transactions on the Internet. Digital signature capacities contain encoding messages such that totally authentic parties are in a part to decrypt the message. Two separate however interrelated 'keys' perceived as public key and Privet key elevate out this system of encryption and decryption. A digital signature satisfies all the capacities, for example, authenticity, non-repudiation, and security, of a hand-written signature. The elements of DS…

Only one single key is saved in the nodes ' memory and once enforced in the network, there is no requirement for a node to perform key exchange or key discovery, however, all the nodes in communication coverage area can transfer messages employing the key which they already share. On the other side, this strategy suffers a serious disadvantage that adjustment of a single node would lead compromise of the whole network by the shared key. Hence it fails in offering the basic secure…

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in awkward or embarrassing situations and secretly videotaped. A lot of humor came from these shows but in my opinion, people today have taken this concept of secret videotaping too far. Today, secret video cameras are a real restriction to the publics right to privacy. In a typical day, a person could leave his house to go to work and get taped by his neighbor’s video camera. On the way to work, he is taped by a camera checking to see if he went through a red light. He goes to a gas…

The purpose of this paper is to discuss the potential risk of connecting any computer to World Wide Web or any network. With they’re being many threats such as hackers and malicious virus’s; attacks are going to happen whether you’re an organization or just an online shopper. In this day and age it is more often that a security breach is most likely to happen on a personal computer than at a company because the home user is not as secure and the average user is not as “computer savvy”. With that…

Watson 1.Introduction Watson is a Question Answering system developed by IBM to compete against human opponents in Jeopardy which is a well-known television quiz show with a twist. Contestants are asked to phrase the question of a given answer from a selected category. The game of Jeopardy is considered a hard game for computers given its unstructured nature of questions from a vast number of domains and types. 2.History Before the start of the Watson project the team at IBM worked on…

MD5 and RSA RC4 40 MD5 since they are fast and almost universally implemented by SSL servers from the very early days of the protocol. Client side authentication is not implemented because it is rarely used and requires (highly CPU intensive) private key RSA operations on the client. The server is authenticated via RSA signatures. There are no restrictions on the server 's certificate chain length. The client maintains an extensible set of trusted Certification Authorities. The SSL client…