Huawei Certified ICT Associate – Security (HCIA-Security) — Question 6

Which of the following encryption algorithm, encryption and decryption keys are the same?

Answer options

• A. DES
• B. RSA(1024)
• C. MD5
• D. SHA-1

Correct answer: A

Explanation

The correct answer is A, DES, as it is a symmetric encryption algorithm that uses the same key for both encrypting and decrypting data. In contrast, B (RSA) is an asymmetric algorithm that employs a public/private key pair, while C (MD5) and D (SHA-1) are hash functions that do not involve encryption or decryption.