Wireless Fidelity ABSTRACT Wi-Fi‚ which stands for “Wireless Fidelity”‚ is a radio technology that networks computers so they connect to each other and to the internet without wires.It refers to wireless LAN products based on the IEEE 802.11b specification.Users can share documents and projects‚as well as an internet connection among various computer stations. A Wi-Fi network operates just like a wired network‚ without restrictions imposed by wires .Not only does it enable users to move around
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The computer world gives criminals a large amount of power because victims can just about anyone and can happen internationally (Maras‚ 2015). It can be hard for law enforcement to understand cybercrime because of how fast new crimes are committed and the new ways to commit those crimes is constantly changing (Maras‚ 2015). For example‚ various ways to commit cybercrime include hacking‚ malware‚ cyberterrorism‚ cyberextortion‚ and cybervandalism (Maras‚ 2015). It can be hard for law enforcement to
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Encryption is the process of transforming normal content‚ called plaintext‚ into unreadable gibberish‚ called ciphertext. Digital Signature – a hash of a document that is encrypted using the document creator’s private key. Digital Certificate – an electronic document that contains an entity’s public key and certifies the identity of the owner of that particular
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Cipher text: This is the scrambled message produced as output. It depends on the plaintext and the key. For a given message‚ two different keys will produce two different cipher texts. • Decryption algorithm: This algorithm accepts the ciphertext and the matching key and produces the original plaintext. [pic] The essential steps are as the following: 1. Each user generates a pair of keys to be used for the encryption and decryption of messages. 2. Each user places one of the
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ePayment Security ECOM 6016 Electronic Payment Systems • Keep financial data secret from unauthorized parties (privacy) – CRYPTOGRAPHY Lecture 3 ePayment Security • Verify that messages have not been altered in transit (integrity) – HASH FUNCTIONS • Prove that a party engaged in a transaction ( (nonrepudiation) ) – DIGITAL SIGNATURES • Verify identity of users (authentication) – PASSWORDS‚ DIGITAL CERTIFICATES THE UNIVERSITY OF HONG KONG FEB/MAR 2012 © 2012 MICHAEL I. SHAMOS
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Abstract The objectives of the report are to investigate the perceived threats of computerized accounting information systems (CAIS) and to discuss how the impact of these threats can be reduced. The report covers the 19 perceived threats of CAIS‚ preventive controls‚ detective controls‚ corrective controls and auditors’ attestation of internal controls. Examples of controls given are authentication‚ authorization‚ physical access control‚ host and application hardening‚ encryption‚ training‚
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Internet has vital impact in our life nowadays as it becomes more and more popular. It allows us to have wider range of communication and interaction‚ to exchange and share experiences‚ thoughts‚ information‚ and to make business online. Without doubt‚ internet make our life more easier‚ internet banking system allow us to manage our bank accounts‚ paying bills without queuing‚ online shops allow us to make purchase without going out‚ online education‚ publication and article postings allow us learn
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determining the strength of the algorithm. Variably secure: The key length is variable and can be as long as 448 bits. This allows a tradeoff between higher speed and higher security. Blowfish encrypts 64-bit blocks of plaintext into 64-bit blocks of ciphertext. Blowfish is implemented in numerous products and has received a fair amount of scrutiny. So far‚ the security of Blowfish is unchallenged. DESIGN DECISIONS Based on Schneier’s design parameters‚ he have made these design decisions. The algorithm
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| | IntroductionThe term “computer network’’ means a collection of autonomous computers interconnected by a single technology. Two computers are said to be interconnected if they are able to exchange information. The connection need not be via a copper wire; fiber optics‚ microwaves‚ infrared‚ and communication satellites can also be used. Networks come in many sizes‚ shapes and forms. Uses of Computer Networks 1. Business Applications 2. Home Applications 3. Mobile Users 4. Social Issues
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CHAPTER 8 1) Access Control List: This network access control determines which IP packets are allowed entry to a network and which are dropped. 2) Access Control Matrix: A table specifying which portions of the system users are permitted to access. Compatibility tests utilize a(n) ________‚ which is a list of authorized users‚ programs‚ and data files the users are authorized to access or manipulate. 3) Authentication: Verifying the identity of the person or device attempting to access the
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