gs gs124 Pseudorandom Number Generation and Stream Ciphers and More Block Ciphers - Pseudorandom Number Generators - Quiz No.1
gs gs124 Introduction Cyber Security Quiz
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Question 2: ANSI X9.17 uses which cryptographic algorithm?
DES
AES
RC5
3DES
Question 3: Pretty Good Privacy(PGP) uses which PRNG?
ANSI X9.82
RFC 4086
NIST SP 800-90
ANSI X9.17
Question 5: Which of the following statements are true?
i) RC4 is used in SSL/TLS
ii) File transfer, e-mail use stream ciphers
iii) Browser/Web Links use stream ciphers
i) RC4 is used in SSL/TLS
ii) File transfer, e-mail use stream ciphers
iii) Browser/Web Links use stream ciphers
1st and 2nd
1st only
1st and 3rd
All are true
Question 6: Which of the following statements are true?
i) PRNGs are slower than TRNGs
ii) PRNGs are periodic
iii) TRNGs are nondeterministic
i) PRNGs are slower than TRNGs
ii) PRNGs are periodic
iii) TRNGs are nondeterministic
1st and 2nd
1st only
2nd and 3rd
All are true
Question 8: Intel digital random number generator uses which among the following methods to generate random bits?
pulse detectors of ionizing radiating events
gas discharge tubes
wind resistance
thermal noise
Question 9: Which of the following AES modes is used in the Intel DRNG?
i) AES CFB
ii) AES CTR
iii) AES CBC
iv) AEC OFB
i) AES CFB
ii) AES CTR
iii) AES CBC
iv) AEC OFB
2nd and 3rd
3rd and 4th
1st and 2nd
All of the mentioned
Question 11: Which of the following PRNGs is used in most recent Intel Chips?
ANSI X9.17 PRNG
NIST CTR_DRBG
ANSI standard X9.82
None of the mentioned
Question 12: For the NIST CTR_DRBG , Seed length =
Output Block Length
Reseed Interval
Reseed Interval + Output Block Length
Output Block Length + Key Length
Question 13: The CTR mode uses a Key K and an Initial Vector V. The Intel Digital Random Number generator has these values initially as
K = 0 ; V = 1
K = 0 ; V = 0
K = 1 ; V = 1
K = 1 ; V = 0
Question 15: What is the Seed length (seedlen) length for 3DES?
284
260
232
216
Question 17: With reference to stream ciphers, the output of the generator is called
Byte Stream
Re-Seed Interval
Key Length
Keystream
Question 18: Which of the following is not a valid design parameter to be considered in designing stream ciphers?
Keystream should be truly as random as possible
Encryption sequence should have a large value
Output of the PRNG (the key) should be sufficiently large
All of the mentioned are valid points that should be considered while designing stream cipher blocks
Question 20: ANSI X9.17 uses which cryptographic algorithm?
DES
AES
RC5
3DES
Question 21: Pretty Good Privacy(PGP) uses which PRNG?
ANSI X9.82
RFC 4086
NIST SP 800-90
ANSI X9.17
Question 23: Which of the following statements are true?
i) RC4 is used in SSL/TLS
ii) File transfer, e-mail use stream ciphers
iii) Browser/Web Links use stream ciphers
i) RC4 is used in SSL/TLS
ii) File transfer, e-mail use stream ciphers
iii) Browser/Web Links use stream ciphers
1st and 2nd
1st only
1st and 3rd
All are true
Question 24: Which of the following statements are true?
i) PRNGs are slower than TRNGs
ii) PRNGs are periodic
iii) TRNGs are nondeterministic
i) PRNGs are slower than TRNGs
ii) PRNGs are periodic
iii) TRNGs are nondeterministic
1st and 2nd
1st only
2nd and 3rd
All are true
Question 26: Intel digital random number generator uses which among the following methods to generate random bits?
pulse detectors of ionizing radiating events
gas discharge tubes
wind resistance
thermal noise
Question 27: Which of the following AES modes is used in the Intel DRNG?
i) AES CFB
ii) AES CTR
iii) AES CBC
iv) AEC OFB
i) AES CFB
ii) AES CTR
iii) AES CBC
iv) AEC OFB
2nd and 3rd
3rd and 4th
1st and 2nd
All of the mentioned
