Data Integrity Algorithms Questions and Answers – Whirlpool Algorithm – I

This set of Cryptography Multiple Choice Questions & Answers (MCQs) focuses on “Whirlpool Algorithm – 1”.

1. Which of the following is not true for whirlpool hashing function?
a) It is a two way hashing function
b) It is based on a 512 bit block cipher
c) The block cipher is similar to AES structure
d) It is resistant to differential attacks
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2. The expected workload of generating a collision is of the order of ____________ executions of Whirlpool.
a) 2^(n/2)
b) 2^(n-1)
c) 2⁽ⁿ⁾
d) 2⁽²ⁿ⁾
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3. Given a message, the expected workload of finding a message that hashes to that value is of the order ____________
a) 2^(n/2)
b) 2^(n-1)
c) 2⁽ⁿ⁾
d) 2⁽²ⁿ⁾
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4. Given a message and its n-bit hash result, the expected workload of finding a message that hashes to the same value is of the order _______________
a) 2^(n/2)
b) 2^(n-1)
c) 2⁽ⁿ⁾
d) 2⁽²ⁿ⁾
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5. The message is padded to
a) 1024 bits
b) 512 bits
c) Odd multiple of 256 bits
d) Odd multiple of 512 bits
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6. The length of the message is appended to the message. What is the size of this length?
a) 256 bits
b) 512 bits
c) 128 bits
d) 1024 bits
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7. The hash matrix is of the size
a) 16 × 8
b) 16 × 4
c) 8 × 8
d) 4 × 16
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8. The 8 × 8 hash matrix holds values of size
a) 16 bits
b) 32 bits
c) 8 bits
d) 4 bits
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9. The hash matrix of 8 × 8 is preferred over a 16 × 4 matrix because
a) it is symmetric
b) it is smaller in size
c) it is faster in computation
d) none of the mentioned
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10. How many rounds are there in one Whirlpool Iteration?
a) 3
b) 4
c) 6
d) 8
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11. Which one of these is not a Whirlpool function?
a) Add Key
b) Substitute Bytes
c) Mix Rows
d) Shift Rows
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