True False Side Channel Attacks Attacker Must Physical Access System Attack Collect Side C Q34314505

True or false: In all side channel attacks, the attacker must have physical access to the system under attack to collect side channel information. True False point 2. True or false: Side channel attacks are passive, but they can be combined with active attacking methods to become more effective in breaking the system. True False point True or false: The power and delay of different instructions are normally different. True False point 4. True or false: The power and delay of the same instruction on different oprands can also be different. True O FalseTrue or false: The optical side channel attacks are rare because they require expensive equipment. True OFalse point 6. True or false: Hitting different keys or key combinations on the keyboard will generate different acoustic traces. This can leak side channel information. O True False point 7. True or false: When the secret data stored in cache or register is overwritten by other data, this memory load (or data overwriting) operation will not leak any information about the secret data. True False point 8. True or false: When the cache storing secret data is shared by other processes, it may introduce security vulnerabilities O True False9. Which of the following, according to Kochers 1996 paper, is not necessary to launch a successful timing attack? A way to precisely identify the start and completion of the operation The execution time variations on the operations are caused by different key values. The execution time variations on the operations are measureable. The algorithm used in the crypto-system and some design details All of the above are necessary. point 10. Which of the following statements about differential power analysis (DPA) is true? DPA needs only a small amount of power traces when the crypto algorithm is running. DPA requires accurate power traces. DPA needs to know the detailed implementation of the crypto algorithm under attack. DPA needs tools or skills to analyze the power traces.Both Kochers and Schindlers timing attacks can break RSA algorithm. Which of the following statements is true? Kochers timing attack targets the RSA decryption key. Both attacks try to factor n Schindlers timing attack targets the RSA decryption key. Both attacks target the RSA decryption key. point 12. The following actions can form a scan chain based attack on a system with 5 flip flops. What is the correct order to launch the attack? A. Set TC-0, let the system run for one clock cycle. B. set TC-1, read the output from scan out for 5 cycles. C. set TC-1, send state information to the system via scan in for 5 cycles. D. set TC-0, apply the input value at the systems primary input ports C,A,D,B A,B,C,D D,A,C,B C,D,A,B13. Which of the followings will not help to prevent side channel attacks? Careful engineering so circuits power, timing, and other characteristics that can be observed from side channel become data independent. Use sensor mesh at the top metal layer and continuously monitor all paths in the mesh Use dedicated power supply for the crypto units on the chip. Restrict the physical access to the system (e.g, no entry within a certain distance, say 300 meters, of the system) point (2015) (hint: factor 2015 to primes) Enter answer here point 15. Which of the following statements about the randomized modular exponentiation (ME) is true? The three random numbers 1, T2,Ts must be primes. The randomized ME method avoids the modular exponentiation computation The three random numbers r1, r2,T3 cannot have the same value. The random number r2 cannot be 0.

True or false: In all side channel attacks, the attacker must have physical access to the system under attack to collect side channel information. True False point 2. True or false: Side channel attacks are passive, but they can be combined with active attacking methods to become more effective in breaking the system. True False point True or false: The power and delay of different instructions are normally different. True False point 4. True or false: The power and delay of the same instruction on different oprands can also be different. True O False True or false: The optical side channel attacks are rare because they require expensive equipment. True OFalse point 6. True or false: Hitting different keys or key combinations on the keyboard will generate different acoustic traces. This can leak side channel information. O True False point 7. True or false: When the secret data stored in cache or register is overwritten by other data, this memory load (or data overwriting) operation will not leak any information about the secret data. True False point 8. True or false: When the cache storing secret data is shared by other processes, it may introduce security vulnerabilities O True False 9. Which of the following, according to Kocher’s 1996 paper, is not necessary to launch a successful timing attack? A way to precisely identify the start and completion of the operation The execution time variations on the operations are caused by different key values. The execution time variations on the operations are measureable. The algorithm used in the crypto-system and some design details All of the above are necessary. point 10. Which of the following statements about differential power analysis (DPA) is true? DPA needs only a small amount of power traces when the crypto algorithm is running. DPA requires accurate power traces. DPA needs to know the detailed implementation of the crypto algorithm under attack. DPA needs tools or skills to analyze the power traces. Both Kocher’s and Schindler’s timing attacks can break RSA algorithm. Which of the following statements is true? Kocher’s timing attack targets the RSA decryption key. Both attacks try to factor n Schindler’s timing attack targets the RSA decryption key. Both attacks target the RSA decryption key. point 12. The following actions can form a scan chain based attack on a system with 5 flip flops. What is the correct order to launch the attack? A. Set TC-0, let the system run for one clock cycle. B. set TC-1, read the output from scan out for 5 cycles. C. set TC-1, send state information to the system via scan in for 5 cycles. D. set TC-0, apply the input value at the system’s primary input ports C,A,D,B A,B,C,D D,A,C,B C,D,A,B 13. Which of the followings will not help to prevent side channel attacks? Careful engineering so circuit’s power, timing, and other characteristics that can be observed from side channel become data independent. Use sensor mesh at the top metal layer and continuously monitor all paths in the mesh Use dedicated power supply for the crypto units on the chip. Restrict the physical access to the system (e.g, no entry within a certain distance, say 300 meters, of the system) point (2015) (hint: factor 2015 to primes) Enter answer here point 15. Which of the following statements about the randomized modular exponentiation (ME) is true? The three random numbers 1, T2,Ts must be primes. The randomized ME method avoids the modular exponentiation computation The three random numbers r1, r2,T3 cannot have the same value. The random number r2 cannot be 0. Show transcribed image text True or false: In all side channel attacks, the attacker must have physical access to the system under attack to collect side channel information. True False point 2. True or false: Side channel attacks are passive, but they can be combined with active attacking methods to become more effective in breaking the system. True False point True or false: The power and delay of different instructions are normally different. True False point 4. True or false: The power and delay of the same instruction on different oprands can also be different. True O False
True or false: The optical side channel attacks are rare because they require expensive equipment. True OFalse point 6. True or false: Hitting different keys or key combinations on the keyboard will generate different acoustic traces. This can leak side channel information. O True False point 7. True or false: When the secret data stored in cache or register is overwritten by other data, this memory load (or data overwriting) operation will not leak any information about the secret data. True False point 8. True or false: When the cache storing secret data is shared by other processes, it may introduce security vulnerabilities O True False
9. Which of the following, according to Kocher’s 1996 paper, is not necessary to launch a successful timing attack? A way to precisely identify the start and completion of the operation The execution time variations on the operations are caused by different key values. The execution time variations on the operations are measureable. The algorithm used in the crypto-system and some design details All of the above are necessary. point 10. Which of the following statements about differential power analysis (DPA) is true? DPA needs only a small amount of power traces when the crypto algorithm is running. DPA requires accurate power traces. DPA needs to know the detailed implementation of the crypto algorithm under attack. DPA needs tools or skills to analyze the power traces.
Both Kocher’s and Schindler’s timing attacks can break RSA algorithm. Which of the following statements is true? Kocher’s timing attack targets the RSA decryption key. Both attacks try to factor n Schindler’s timing attack targets the RSA decryption key. Both attacks target the RSA decryption key. point 12. The following actions can form a scan chain based attack on a system with 5 flip flops. What is the correct order to launch the attack? A. Set TC-0, let the system run for one clock cycle. B. set TC-1, read the output from scan out for 5 cycles. C. set TC-1, send state information to the system via scan in for 5 cycles. D. set TC-0, apply the input value at the system’s primary input ports C,A,D,B A,B,C,D D,A,C,B C,D,A,B
13. Which of the followings will not help to prevent side channel attacks? Careful engineering so circuit’s power, timing, and other characteristics that can be observed from side channel become data independent. Use sensor mesh at the top metal layer and continuously monitor all paths in the mesh Use dedicated power supply for the crypto units on the chip. Restrict the physical access to the system (e.g, no entry within a certain distance, say 300 meters, of the system) point (2015) (hint: factor 2015 to primes) Enter answer here point 15. Which of the following statements about the randomized modular exponentiation (ME) is true? The three random numbers 1, T2,Ts must be primes. The randomized ME method avoids the modular exponentiation computation The three random numbers r1, r2,T3 cannot have the same value. The random number r2 cannot be 0.

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