Which of the following cryptographic concepts would a security engineer utilize while implementing non-repudiation? (Select TWO)

Which of the following cryptographic concepts would a security engineer utilize while implementing non-repudiation? (Select TWO)
A . Block cipher
B . Hashing
C . Private key
D . Perfect forward secrecy
E . Salting
F . Symmetric keys

Answer: B, C

Explanation:

Non-repudiation is the ability to ensure that a party cannot deny a previous action or event. Cryptographic concepts that can be used to implement non-repudiation include hashing and digital signatures, which use a private key to sign a message and ensure that the signature is unique to the signer.

Reference: CompTIA Security+ Certification Exam Objectives (SY0-601)

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