Reusing the stream cipher key
Explain why it is not desirable to reuse the stream cipher key?
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If two plaintexts are encrypted along with the same key using the stream cipher then cryptanalysis is often quite simple. If two cipher text streams are XORed together with the result is regarded as the XOR of the original plaintexts. Thus, it is not desirable to reuse the stream cipher key.
Explain the term power analysis?
A) Provide a specific illustration of how inference control might be implemented in the database.B) For a public-key encryption system (like PGP), list some areas for and against utilizing the similar key pair for both encryption and signature.
What is meant by the term nonce?
Advances of LAN Security Setup: The company should use firewall in order to separate the wireless Local Area Network. A gateway/ firewall is used in order to separate the wireless and wired networks. This helps to screen the traffic in wired network.
How can you secure a network perimeter? Be ensure to discuss all three of the basic access points into most networks, as well as the different types of firewalls commonly used today.
Explain the key distribution center?
Explain the term traffic padding and state its purpose?
Specify the reasons for using the PGP?
Explain the primitive operations which are used in the Blowfish?
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