Cryptology can provide 5 basic protections: confidentiality, integrity, availabi

Question

Cryptology can provide 5 basic protections: confidentiality, integrity, availability, authentication, non-repudiation.

What’s the difference between authentication and non-repudiation?

Fill in the following table

Confidential

Integrity

Availability

Authentication

Non-repudiation

Hash

Symmetric

Asymmetric no digital signature

Asymmetric with digital signature

Confidential

Integrity

Availability

Authentication

Non-repudiation

Hash

Symmetric

Asymmetric no digital signature

Asymmetric with digital signature

Explanation / Answer

Authentication: It is process of checking the validity of user. After user log in to the system, user is verified to check the validity, if password provided is correct then user is authenticated.

Non repudiation means , There is no way the user denies that commiunication is carried out by user.

Fill in the following table

Confidential

Integrity

Availability

Authentication

Non-repudiation

Hash

yes

yes

yes

Symmetric

yes

no

no

Asymmetric no digital signature

yes

yes

Asymmetric with digital signature

yes

yes

yes

yes

Confidential

Integrity

Availability

Authentication

Non-repudiation

Hash

yes

yes

yes

Symmetric

yes

no

no

Asymmetric no digital signature

yes

yes

Asymmetric with digital signature

yes

yes

yes

yes

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