Using MIS (9th Edition)
9th Edition
ISBN: 9780134106786
Author: David M. Kroenke, Randall J. Boyle
Publisher: PEARSON
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Expert Solution & Answer
Chapter 4.8, Problem 4SGDQ
Explanation of Solution
Reason for the portion of “OpenSSL” code containing the Heartbleed vulnerability:
- Based on the given it is said that the portion of open SSL (Secure sockets Layer) code contains errors because of the shortage in paid code checkers.
- Open SSL is an open source project involving the small team or community who releases code for free whenever it is required.
Heartbeat:
- Consider a client accessing a secure server.
- A client shares a particular amount of random number to its server.
- The server will in turn make copies of those random data and will send the data again to the client.
- This type of action is called as heartbeat which ensures both client and server are present in an active state.
- This action happens in the “TLS” (transport Layer Security) which ensures the protection of confidential data that being searched on the web.
- It will have its connection remained opened even if no data are being shared.
- This operation will have smooth process until an error or fault that it contains in the Open SSL.
Heartbleed:
- When an error occurs in the code of open source open SSL (Secure Socket Layer) cryptographic library “Heartbleed” vulnerability occurs.
- Error that could occur is, consider if the user or client intimates to send a particular amount of information but delivers only a few amount of information that it had intimated, the act of sending less amount of information than it committed to the server is the error, in this case the server in turn replies to the client by sending the information in the amount the client as intimated...
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Person
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1) Apply the Paint Blue algorithm discussed in class to the following Finite Automata.
a
a
a
b
b
a
COIS-3050H-R-W01-2025WI-COMB Formal
Languages & Automata
a
b
Show the status of the Finite Automata at the conclusion of the Paint Blue Algorithm (mark the
visited states with an X and only include edges that have not been followed).
2) Use the pumping lemma to prove the following language is nonregular:
L= {ab} = {abbb, aabbbbbb, aaabbbbbbbbb, ...}
3) Find CFGs that for these regular languages over the alphabet Σ= {a, b}. Draw a Finite Automata
e CFG.
1
COIS-3050H-R-W01-2025WI-COMB Formal
anguages & Automata
Is that contain the substring aba.
(b) The language of all words that have an odd number letters and contains the string bb.
(c) The language of all words that begin with the substring ba and contains an odd number of
letters.
4) Convert the following FA into a PDA.
a
a
S±
b
a
a
Ν
Ꮓ
Chapter 4 Solutions
Using MIS (9th Edition)
Ch. 4.4 - Prob. 1NFCSCh. 4.4 - Prob. 2NFCSCh. 4.4 - Prob. 3NFCSCh. 4.4 - Prob. 4NFCSCh. 4.4 - Prob. 5NFCSCh. 4.4 - Prob. 6NFCSCh. 4.6 - Prob. 1EGDQCh. 4.6 - Prob. 3EGDQCh. 4.6 - Prob. 4EGDQCh. 4.8 - Prob. 1SGDQ
Ch. 4.8 - Prob. 2SGDQCh. 4.8 - Prob. 3SGDQCh. 4.8 - Prob. 4SGDQCh. 4.8 - Prob. 5SGDQCh. 4.8 - Prob. 6SGDQCh. 4.8 - Prob. 1KUTSCh. 4.8 - Prob. 2KUTSCh. 4.8 - Prob. 3KUTSCh. 4.8 - Prob. 4KUTSCh. 4.8 - Prob. 4.1ARQCh. 4.8 - Prob. 4.2ARQCh. 4.8 - Prob. 4.3ARQCh. 4.8 - Prob. 4.4ARQCh. 4.8 - Prob. 4.5ARQCh. 4.8 - Prob. 4.6ARQCh. 4.8 - Prob. 4.7ARQCh. 4.8 - Prob. 4.8ARQCh. 4 - Prob. 4.1UYKCh. 4 - Prob. 4.2UYKCh. 4 - Prob. 4.3UYKCh. 4 - Prob. 4.4UYKCh. 4 - Prob. 4.5UYKCh. 4 - Prob. 4.6UYKCh. 4 - Prob. 4.7CE4Ch. 4 - Prob. 4.8CE4Ch. 4 - Prob. 4.9CE4Ch. 4 - Prob. 4.10CE4Ch. 4 - Prob. 4.11CE4Ch. 4 - Prob. 4.12CS4Ch. 4 - Prob. 4.13CS4Ch. 4 - Prob. 4.14CS4Ch. 4 - Prob. 4.15CS4Ch. 4 - Prob. 4.16CS4Ch. 4 - Prob. 4.17MMLCh. 4 - Prob. 4.18MML
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