Test Bank for Computer Security Principles and Practice 3rd Edition by Stallings Computer Security3.

Test Bank for Computer Security Principles and Practice 3rd Edition by Stallings Computer Security3.

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Computer Security: Principles and Practice, 3 rd Edition Chapter 2 FOR MORE OF THIS COURSE AND ANY OTHER COURSES, TEST BANKS, FINAL EXAMS, AND SOLUTION MANUALS CONTACT US AT [email protected] Chapter 2 – Cryptographic Tools TRUE/FALSE QUESTIONS: T F 1.Symmetric encryption is used primarily to provide confidentiality. T F 2.  Two of the most important applications of public-key encryption are  digital signatures and key management. T F 3.  Cryptanalytic attacks try every possible key on a piece of ciphertext until an intelligible translation into plaintext is obtained. F 4.The secret key is input to the encryption algorithm. T F 5.Triple DES takes a plaintext block of 64 bits and a key of 56 bits to  produce a ciphertext block of 64 bits. T F 6.  Modes of operation are the alternative techniques that have been  developed to increase the security of symmetric block encryption for    large sequences of data. T F 7.  The advantage of a stream cipher is that you can reuse keys. T F 8.   A message authentication code is a small block of data generated by a  secret key and appended to a message.
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Computer Security: Principles and Practice, 3 rd Edition Chapter 2 T F 9.Like the MAC, a hash function also takes a secret key as input. T F 10.The strength of a hash function against brute-force attacks depends  solely on the length of the hash code produced by the algorithm. T F 11.Public-key cryptography is asymmetric. T F 12.Public-key algorithms are based on simple operations on bit patterns. T          F 13.The purpose of the DSS algorithm is to enable two users to securely       reach agreement about a shared secret that can be used as a secret key         for subsequent symmetric encryption of messages.
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