What security objectives does cryptography meet:

Each correct answer represents a complete solution. Choose all that apply.

A.
Authentication

B.
Confidentiality

C.
Data integrity

D.
Authorization

Explanation:
Cryptography is used to meet the following security objectives:

Confidentiality is used to restrict access to the sensitive data to only those individuals who are authorized to view the data. Confidentiality measures prevent the unauthorized disclosure of information to unauthorized individuals/processes.

Data integrity is used to address the unauthorized/accidental modification of data. This includes data insertion, deletion, and modification. In order to ensure data integrity, a system must be able to detect unauthorized data modification. The goal is for the receiver of the data to verify that the data has not been altered.

Authentication is used to establish the validity of a transmission, message, or an originator. It also

verifies an individual’s authorization to receive specific categories of information, but it is not specific to cryptography. Therefore, authentication applies to both individuals and the information itself. The goal is for the receiver of the data to determine its origin.

Non-repudiation is used to prevent an individual from denying that previous actions had been performed. The goal is to ensure that the recipient of the data is assured of the sender’s identity.