In What Type of Attack Does the Attacker Have the Ciphertext

question 38

Multiple Choice

In what type of attack does the attacker have the ciphertext of several messages that were encrypted with the same encryption algorithm,but has no access to the plaintext so he or she must try to calculate the key used to encrypt the data?

• A) chosen-ciphertext
• B) chosen-plaintext
• C) known plaintext
• D) ciphertext-only

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Definitions:

Comparability

A quality of accounting information that allows users to analyze and compare financial data from different periods and entities in order to make informed decisions.

Capital Raised

The total amount of funds collected by a company from investors or financial markets, often used for business operations, expansion, or paying off debt.

Stock Options

Financial derivatives that give the holder the right, but not the obligation, to buy or sell a stock at a predetermined price within a specified time frame.

Diluted Earnings

Earnings per share calculated under the assumption that all convertible securities have been converted into common stock, providing a "worst case" scenario perspective on earnings per share.