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Which among the following has the lowest bitrate ?

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in Cryptograph & Network Security by (60.0k points)
Which among the following has the lowest bitrate ?

(a) PRF

(b) TRNG

(c) PRNG

(d) All have the same bitrate

I got this question at a job interview.

The query is from Principles of PRNG topic in portion Pseudorandom Number Generation and Stream Ciphers and More Block Ciphers of Cryptograph & Network Security

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The correct option is (b) TRNG

To explain I would say: TRNGs are the slowest. The mechanism used to generated True Random numbers may not be able to generate bits at a rate sufficient to keep up with the application requiring the random bits.

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