Q. Which of the following statements are true?

i) Stream Ciphers are fasters than Block Ciphers
ii) Block Ciphers can reuse keys
iii) Block ciphers use lesser code than stream ciphers

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Q. 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

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Q. Which of the following statements are true?

i) PRNGs are slower than TRNGs
ii) PRNGs are periodic
iii) TRNGs are nondeterministic

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Q. Deskewing is a method to modify bit stream to reduce bais that has been developed.

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Q. Intel digital random number generator uses which among the following methods to generate random bits?

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Q. Which of the following AES modes is used in the Intel DRNG?

i) AES CFB
ii) AES CTR
iii) AES CBC
iv) AEC OFB

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Q. The number of transistors used in the INTEL DRNG

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Q. What is the maximum size of the key in blowfish algorithm?

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Q. Blowfish encrypts blocks of plaintext which have size

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Q. The blowfish algorithm can be implemented on 16 bit processors.

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Q. What is the minimum size of the key in blowfish algorithm?

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Q. The blowfish algorithm’s key expansion converts a key of at most 448 bits into several subkey arrays totaling ___________ bytes.

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Q. Blowfish algorithm uses the Feistel Structure.

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Q. XOR and addition operations take place on bytes of size

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Q. How many S-boxes are present in the blowfish algorithm?

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Q. How many entries are present in each of the S-boxes present in the blowfish algorithm?

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Q. In blowfish, the keys are stored in the form of an array ranging from K1, K2 to Ki. What is the value of i?

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Q. To generate the sub-key P1 to P18 we use the hexadecimal equivalent digits of ____________

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Q. P17 gets XORed with

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Q. P15 gets XORed with

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