ExpertMedium1 markMultiple Choice
CPA · Question 49 · Area II: Security
Which cryptographic concept ensures that a message has not been altered in transit?
Which cryptographic concept ensures that a message has not been altered in transit?
Answer options:
A.
Symmetric Encryption
B.
Hashing / Message Digest
C.
Diffie-Hellman
D.
Steganography
How to approach this question
Match 'Integrity' or 'Not Altered' to Hashing.
Full Answer
B.Hashing / Message Digest✓ Correct
Hashing / Message Digest
Hashing creates a fixed-size string from data. If the data changes even slightly, the hash changes completely. This verifies integrity.
Common mistakes
Thinking encryption ensures integrity (it ensures confidentiality).
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