Q. A stream cipher key is usually of size ___ or 128 bits.

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Q. Which among the following has the lowest bitrate ?

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Q. RC4 was built on the sole purpose of generating random bits i.e. to act as a PRNG.

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Q. Maurer’s Universal Statistical Test is –

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Q. Runs Test is

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Q. Frequency Test is

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Q. We should not be able to determine the seed from any previous knowledge of the bits sequence. This is the property of backward unpredictability.

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Q. Forward Unpredictability is a property when the seed is unknown, and the next output bit is the sequence should be unpredictable.

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Q. Using the Linear Congruential Method (LCM), for a=7, c=0 and m=32. The period is

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Q. Using the Linear Congruential Method, for a=5, c=0 and m=32. The period is

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Q. The appropriate value for m (in LCM) is

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Q. A CSPRBG is defined as one that passes the __ test.

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Q. Find the first 8 bits for Blum Blum Shub Bit Generator when seed = 101355 and n = 192649.

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Q. Which of these modes is an appropriate mode for PRNG?

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Q. Which mode is recommend for the X9.82 Random number generator?

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Q. AES PRNG produces bits outputs of size

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Q. Which mode is recommend for the ANSI standard X9.82 Random number generator?

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Q. The CTR algorithm for PRNG is known as

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Q. Which mode is recommend for the RFC 4086 Random number generator?

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Q. while (len(temp) < requested_number_of_bits) do

V = E(Key, V)
temp = temp || V

The above algorithm is for the CTR mode.

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