MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Symmetric Ciphers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The 32bit output of s-box 1 is XORed with s-box 2. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
A single blowfish s-box converts 8-bits to _________ bits. |
| A. | 32 |
| B. | 44 |
| C. | 56 |
| D. | 64 |
| Answer» B. 44 | |
| 3. |
What is the number of iterations required in total to generate all the sub-keys in blowfish? |
| A. | 512 |
| B. | 521 |
| C. | 256 |
| D. | 128 |
| Answer» C. 256 | |
| 4. |
P15 gets XORed with |
| A. | K3 |
| B. | K14 |
| C. | K1 |
| D. | K6 |
| Answer» D. K6 | |
| 5. |
P17 gets XORed with |
| A. | K3 |
| B. | K12 |
| C. | K17 |
| D. | K6 |
| Answer» B. K12 | |
| 6. |
To generate the sub-key P1 to P18 we use the hexadecimal equivalent digits of ____________ |
| A. | 0.7864 |
| B. | 0.1415 |
| C. | 0.1542 |
| D. | 0.7535 |
| Answer» C. 0.1542 | |
| 7. |
In blowfish, the keys are stored in the form of an array ranging from K1, K2 to Ki. What is the value of i? |
| A. | 12 |
| B. | 16 |
| C. | 8 |
| D. | 14 |
| Answer» E. | |