Which algorithm is known as the Advanced Encryption Standard?

Which algorithm is known as the Advanced Encryption Standard?

• A. Data Encryption Standard
• B. Advanced Encryption Standard
• C. Rivest Shamir Adleman
• D. Digital Signature Standard

Answer: (B)

The Advanced Encryption Standard is AES, the symmetric block cipher chosen by NIST to replace DES because DES’s 56-bit keys became insecure. AES is a true encryption algorithm (not a signature or public-key system) that operates on fixed 128-bit blocks and supports key sizes of 128, 192, or 256 bits, with Rijndael as the underlying design. The other names correspond to different concepts: DES is Data Encryption Standard, an older symmetric cipher; Rivest Shamir Adleman is RSA, an asymmetric encryption algorithm; and Digital Signature Standard refers to a framework for digital signatures (DSA), not encryption. This distinction is why the Advanced Encryption Standard is the correct label.

The Advanced Encryption Standard is AES, the symmetric block cipher chosen by NIST to replace DES because DES’s 56-bit keys became insecure. AES is a true encryption algorithm (not a signature or public-key system) that operates on fixed 128-bit blocks and supports key sizes of 128, 192, or 256 bits, with Rijndael as the underlying design. The other names correspond to different concepts: DES is Data Encryption Standard, an older symmetric cipher; Rivest Shamir Adleman is RSA, an asymmetric encryption algorithm; and Digital Signature Standard refers to a framework for digital signatures (DSA), not encryption. This distinction is why the Advanced Encryption Standard is the correct label.