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A company implements a security policy that ensures that a file sent from the headquarters office to the branch office can only be opened with a predetermined code. This code is changed every day. Which two algorithms can be used to achieve this task? (Choose two.)

  • MD5
  • AES
  • 3DES
  • SHA-1
  • HMAC
Answers Explanation & Hints:

The task to ensure that only authorized personnel can open a file is data confidentiality, which can be implemented with encryption. AES and 3DES are two encryption algorithms. HMAC can be used for ensuring origin authentication. MD5 and SHA-1 can be used to ensure data integrity.

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