Data Integrity Algorithms Questions and Answers – HMAC, DAA and CMAC

This set of Cryptography Multiple Choice Questions & Answers (MCQs) focuses on “HMAC, DAA and CMAC”.

1. Cryptographic hash functions execute faster in software than block ciphers.
a) Statement is correct
b) Statement is incorrect
c) Depends on the hash function
d) Depends on the processor
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2. What is the value of ipad in the HMAC structure?
a) 00111110
b) 00110010
c) 10110110
d) 01110110
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3. What is the value of opad in the HMAC structure?
a) 00111110
b) 00110010
c) 10110110
d) 01011100
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4. Data Authentication Algorithm (DAA) is based on
a) DES
b) AES
c) MD-5
d) SHA-1
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5. Which mode of operation is used in the DAA?
a) output feedback mode
b) electronic code block mode
c) cipher block chaining mode
d) cipher feedback mode
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6. What is the full-form of CMAC?
a) Code-based MAC
b) Cipher-based MAC
c) Construct-based MAC
d) Collective-based MAC
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7. Which cryptographic algorithm is used in CMAC?
a) Triple DES and AES
b) DES
c) RC-4
d) AES
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8. In CMAC, which scenario is a different key K2 is used instead of K1?
a) If the tag is larger than the key length
b) If the tag is shorter than the key length
c) In the last step of the algorithm
d) If the plaintext/message is not an integer multiple of the cipher clock length
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9. K2 is derived by left shifting L by 2 bits. What is L defined as?
a) E(K , 0^b)
b) E(K , 10*^b)
c) E(K , 1^b)
d) E(K , 10*1^b)
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Sanfoundry Global Education & Learning Series – Cryptography and Network Security.

To practice all areas of Cryptography and Network Security, here is complete set of 1000+ Multiple Choice Questions and Answers.

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