The block cipher attack strategy that attempts to retrieve the key by performing decryption and encryption simultaneously on a understood plaintext-ciphertext pair exists plaintext attack.
<h3>What is plaintext attack?</h3>
The known-plaintext attack is a type of cryptanalysis attack in which the attacker has access to both the encrypted and plaintext versions of the target data. These can be used to reveal additional hidden information, including code books and secret keys. An attack using known plaintext occurs when the attacker has access to pairs of known plaintexts and the ciphertexts that go with them.
The objective is to figure out the secret key (or keys) or to create an algorithm that would enable him to decrypt any additional messages. Ordinary readable text before it is converted into ciphertext in cryptography is known as plaintext, as is readable text that has been recovered from encryption. Not all data inputted into or outputted by encryption methods is plaintext.
Hence, The block cipher attack strategy that attempts to retrieve the key by performing decryption and encryption simultaneously on a understood plaintext-ciphertext pair exists plaintext attack.
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Answer:
a) only one digit changes as the number increases.
Explanation:
Let us first understand what does it mean when we say only one digit changes as the number increases using the Reflected Binary code (also called Gray code)
consider the 4 bit representation of Binary coded decimal and RB codes
Decimal | Binary code | Reflected binary (RB) code
0 0000 0000
1 0001 0001
2 0010 0011
3 0011 0010
4 0100 0110
5 0101 0111
As you can see in the case of binary codes, there are more than one digit changes between two consecutive numbers.
But notice that in the case of Gray codes, there is always one digit change between two consecutive numbers.
The problem with the binary codes is that the more digits change there states the greater is the chance of ending up with random transitional values rather than real values which can be incorrect. The RB code solves this problem by only changing one digit at a time.
The RB code is widely used in linear and rotary encoders, error correction and digital logic design.
Answer:
a) percentage Completion
Explanation:
A Kanban board is a digital panel divided into five columns where work teams can view a job until its execution and thus optimize the flow of completed jobs, in addition to allowing the full execution of tasks. These columns are named refers to each phase of the production of a job, as a phase is completed it is possible to move the job to the next column, which allows us to conclude that the use of this type of frame allows the movement of tasks from right to left, but does not allow you to see the percentage of completion.
Answer: Log Analyzer
Explanation:
Log Analyzer is the software application that is used for perceiving, reviewing and understanding the records that gets created through computer.These generated records are data logs which holds the information about activities and statistics of the web and computer.
- According to the question, log analyzer should be used by so that traffic or any web server or network related issues can be analysed , monitored and diagnosed
- Accordingly application management process can be implemented after log analysis take places by producing log data and information about web server.
