CyberCertPrepSecurity FundamentalsCryptography FundamentalsEASYFree question
Which symmetric encryption algorithm is the current standard recommended by NIST and is used worldwide for securing data?
- A.A. DES
- B.B. RC4
- C.D. Blowfish
- D.C. AES
Why D is correct
AES (Advanced Encryption Standard) was selected by NIST in 2001 to replace DES. It supports key sizes of 128, 192, and 256 bits and is widely used in SSL/TLS, VPNs, disk encryption, and more. DES is obsolete, and RC4 has known vulnerabilities.
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