CISSP-ISSAP: Information Systems Security Architecture Professional

By ISC · Question Mode

QuestionQ136

VerifiedInfrastructure and System Security

Maria is a Network Security Officer for Gentech Inc. and wants to encrypt her network traffic. The encryption algorithm must specifically be a symmetric-key block cipher. Which of the following techniques would fulfill this requirement?

Choose three
Explanation

IDEA, DES, and AES are symmetric-key block-cipher algorithms: the same secret key is used for encryption and decryption, and data is processed in fixed-size blocks. PGP is a hybrid encryption system rather than a single symmetric block cipher. DES is obsolete for secure modern use, but it still meets the stated algorithm classification.

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