A Cryptographer Has Developed a New Proprietary Hash Function for a Company

question 379

Multiple Choice

A cryptographer has developed a new proprietary hash function for a company and solicited employees to test the function before recommending its implementation. An employee takes the plaintext version of a document and hashes it, then changes the original plaintext document slightly and hashes it, and continues repeating this process until two identical hash values are produced from two different documents. Which of the following BEST describes this cryptographic attack?

• A) Brute force
• B) Known plaintext
• C) Replay
• D) Collision

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Definitions:

Net Present Value

The calculation of the present value of an investment's expected cash inflows minus the costs.

Cash Sales Policy

A policy adopted by businesses that requires all purchases to be paid for in cash at the time of sale.

Net 30 Credit Policy

A credit term indicating that payment is due in full 30 days after goods are delivered or services are performed.

Monthly Interest Rate

The interest rate applied each month on a loan or investment, often derived from the annual interest rate divided by twelve months.