Common Cryptographic Standards and Algorithms Questions

Covers core cryptographic primitives and the reasons they are widely used or retired. Candidates should know symmetric algorithms such as the Advanced Encryption Standard and its typical key sizes and modes, asymmetric algorithms such as RSA and elliptic curve cryptography with their security and performance tradeoffs, hash functions such as Secure Hash Algorithm two hundred fifty six, and key exchange primitives such as Diffie Hellman. The topic includes understanding authenticated encryption, signature schemes, key sizes and parameter selection, performance and implementation concerns, and awareness of obsolete algorithms such as the Data Encryption Standard and MD five and why they are no longer considered secure.