Maria works as a Network Security Officer for Gentech Inc.
She wants to encrypt her network traffic.
The specific requirement for the encryption algorithm is that it must be a symmetric key block cipher.
Which of the following techniques will she use to fulfill this requirement?
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A. B. C. D.C.
Maria wants to encrypt her network traffic with a symmetric key block cipher. This means that she needs an encryption algorithm that uses the same key for both encryption and decryption, and that operates on fixed-size blocks of data. Here are the four options she has:
A. IDEA: IDEA (International Data Encryption Algorithm) is a symmetric key block cipher that operates on 64-bit blocks of data. However, it is an outdated algorithm and is no longer considered secure enough for modern encryption purposes.
B. PGP: PGP (Pretty Good Privacy) is not a symmetric key block cipher, but a hybrid encryption system that uses both symmetric and asymmetric encryption. It is typically used for securing email communication, but it may not be the best choice for encrypting network traffic.
C. DES: DES (Data Encryption Standard) is a symmetric key block cipher that operates on 64-bit blocks of data. It is an older encryption algorithm that is still used in some legacy systems, but it is not recommended for new applications due to its relatively weak security.
D. AES: AES (Advanced Encryption Standard) is a symmetric key block cipher that operates on 128-bit blocks of data. It is widely considered to be the gold standard for modern encryption and is used in a wide range of applications, including network security. AES is very secure and efficient, making it an excellent choice for encrypting network traffic.
Based on the above options, Maria should choose option D, AES, as it meets the requirements of a symmetric key block cipher, and is also a modern and secure encryption algorithm.