17 Sep Practice Test Question – Blowfish Algorithm
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Which one of the following statements about the Blowfish algorithm is incorrect?
A. The algorithm is covered by a patent.
B. The algorithm uses a 64-bit block size.
C. The algorithm allows the use of any length key between 32 and 448 bits.
D. The developer of the algorithm does not recommend it for use today.
Correct Answer: A
Bruce Schneier designed the Blowfish algorithm as an open-source alternative to other patented encryption algorithms. The algorithm does support a 64-bit block size and variable length keys between 32-448 bits. Schneier does not recommend that people use Blowfish today, instead recommending the Twofish algorithm.