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Class student dicussions answers - Assignment Example

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The system allows the sender and receiver to share key which is common between them. But I could rather suggest that since symmetric cryptography employs use of same key in both ends of the sender and receiver and…
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discussions answers Good Pavitar for the nice definition of symmetric cryptography. The system allows the sender and receiver to share key which is common between them. But I could rather suggest that since symmetric cryptography employs use of same key in both ends of the sender and receiver and the two parties involved in to exchange the key, makes the system to be insecure in sending sensitive messages. It is not best suited for two organizations which need a secure communication. But else, the symmetric cryptography can be adopted by two different organizations because it can be easily implemented and the organizations need less power for processing the communication.

Pavitor, you could have added a definition and elaborated a bit more of asymmetric cryptography in order to make it easier to differentiate the two concepts. I agree with you Jusin G that symmetric key distribution can pose to bring lots of insecure communication or message interception between the involved organizations. Asymmetric cryptography is also known as public key cryptography. It makes use of two keys, a private key to decrypt messages and a public key to encrypt messages. I agree with you Jusin G that the asymmetric cryptography can be adopted by two organizations which want to send sensitive messages more securely.

This is because; the asymmetric cryptography avoids the drawback of exchanging the key by distribution of the public key in a non-secure mechanism while at the same time, the private key is not transmitted. Thanks Pavitor For the good analysis of the different technologies. But I rather disagree with you that WEP is secure. Let me say that WEP is an older technology in wireless networks. This makes it easily hacked and cannot guarantee security within one’s business premise. You gave the advantage that users shun the network ones it prompts for wireless security key, this is not always the case but depends on an individual’s motif.

User may be determined to think of more other ways of getting into the network. I agree with you about interoperability, it is a great feature provided by the WEP. WPA and WPA2 form part of the recommended solutions to WEP security issues. I agree with you that the stronger encryption and the use of Temporary Key Integrity Protocol (TKIP) which changes dynamically offers more secure means of passing data across a wireless network than WEP. Also to note is that WPA2 was as a result of implementation of 802.11i. Good analysis of the encryption for wireless networks you Pavitor.

I disagree with you Jusin G concerning WEP encryption. Remember that WEP gave rise to WPA, WPA2 and 802i and its creation should never be comprised at all. It is true that the encryption is less secure as compared to its predecessor, WPA and WPA2, but we should be grateful of its creation since it is the basis of the encryptions technologies which followed. Technologists got information about its weakness and improved upon the encryption types which followed. Good analysis though Jusin G.Justin G and Kevin, you have provided a good analysis concerning the transposition cipher.

The vulnerability of the encryption method is correct. Making the cipher writing down in a matrix makes it easier for hackers to get view or access to the transmitted messages. You stated that a Substitution cipher enhances security of the messages but it is also less secure. I further agree with you. The arrangement of bits, characters, or blocks of information makes information to be transmitted more securely. Also to add is that, the cipher can be intercepted by professional hackers who may crack it and get the message to satisfy their needs.

Kevin, you gave an example of pigpen cipher as a kind of substitute ciphers. The illustration is quite good to demonstrate the security potentiality of the cipher type.

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