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Which mode is recommend for the NIST SP 800-90 Random number generator?

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in Cryptograph & Network Security by (60.0k points)
Which mode is recommend for the NIST SP 800-90 Random number generator?

(a) OFB

(b) CBC

(c) CFB

(d) CTR

The question was posed to me in homework.

I would like to ask this question from Pseudorandom Number Generators and Stream Ciphers in division Pseudorandom Number Generation and Stream Ciphers and More Block Ciphers of Cryptograph & Network Security

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Best answer
Right answer is (d) CTR

To elaborate: OFB is the recommended mode for the NIST SP 800-90 Random number generator.

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