6.3 Consider the following threats to Web security anddescribe how each is countered by a particular feature ofSL.a. Brute-Force Cryptanalytic Attack: An exhaustivesearch of the key space for a conventionalencryption algorithm.b. Known Plaintext Dictionary Attack: Manymessages will contain predictable plaintext, suchas the HTTP GET command. An attackerconstructs a dictionary containing every possibleencryption of the known-plaintext message. Whenan encrypted message is intercepted, the attackertakes the portion containing the encrypted known plaintext and looks up the ciphertext in thedictionary. The ciphertext should match against anentry that was encrypted with the same secret key.If there are several matches, each of these can betried against the full ciphertext to determine theright one. This attack is especially effectiveagainst small key sizes (e.g., 40-bit keys).c. Replay Attack: Earlier SSL handshake messagesare replayed.d. Man-in-the-Middle Attack: An attacker interposesduring key exchange, acting as the client to theserver and as the server to the client.e. Password Sniffing: Passwords in HTTP or otherapplication traffic are eavesdropped.f. IP Spoofing: Uses forged IP addresses to fool ahost into accepting bogus data.g. IP Hijacking: An active, authenticated connectionbetween two hosts is disrupted and the attackertakes the place of one of the hosts.h. SYN Flooding: An attacker sends TCP SYNmessages to request a connection but does not

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6.3 Consider the following threats to Web security and describe how each is countered by a particular feature of SSL. a. Brute-Force Cryptanalytic Attack: An exhaustive search of the key space for a conventional encryption algorithm. b. Known Plaintext Dictionary Attack: Many messages will contain predictable plaintext, such as the HTTP GET command. An attacker constructs a dictionary containing every possible encryption of the known-plaintext message. When an encrypted message is intercepted, the attacker takes the portion containing the encrypted known

6.3 Consider the following threats to Web security and describe how each is countered by a particular feature of SSL. a. Brute-Force Cryptanalytic Attack: An exhaustive search of the key space for a conventional encryption algorithm. b. Known Plaintext Dictionary Attack: Many messages will contain predictable plaintext, such as the HTTP GET command. An attacker constructs a dictionary containing every possible encryption of the known-plaintext message. When an encrypted message is intercepted, the attacker takes the portion containing the encrypted known

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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