Which of the following statements about Message Authentication Codes (MACs) is not correct? Choose all incorrect answers. MACs (on their own) provide confidentiality, integrity and authenticity OMACS can be constructed from block ciphers OMACS only work for fixed-length messages One has to be careful about replay attacks when using MACs as not all MAC constructions protect against them

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Which of the following statements about Message Authentication Codes (MACs) is not correct? Choose all incorrect
answers.
MACs (on their own) provide confidentiality, integrity and authenticity
OMACS can be constructed from block ciphers
OMACS only work for fixed-length messages
One has to be careful about replay attacks when using MACs as not all MAC constructions protect against them
Transcribed Image Text:Which of the following statements about Message Authentication Codes (MACs) is not correct? Choose all incorrect answers. MACs (on their own) provide confidentiality, integrity and authenticity OMACS can be constructed from block ciphers OMACS only work for fixed-length messages One has to be careful about replay attacks when using MACs as not all MAC constructions protect against them
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