SSL Complete Guide 2021: HTTP to HTTPS - Symmetric Key Encryption Algorithms

The video tutorial covers encryption algorithms, focusing on symmetric key encryption. It discusses obsolete algorithms like DES and 3DES, highlighting their vulnerabilities. The tutorial then introduces modern encryption algorithms, particularly AES, emphasizing its security and flexibility with different key lengths. A brief mention of RSA and asymmetric encryption is included, with a recommendation to use AES for secure communications. The video concludes with a preview of hash functions, setting the stage for the next lecture.

What is a key characteristic of symmetric key encryption algorithms?

• They use the same key for both encryption and decryption.

• They use different keys for encryption and decryption.

• They are only used in modern networks.

• They are always more secure than asymmetric algorithms.

Why is the DES algorithm considered obsolete?

• It requires too much computational power.

• It uses a key length that is too short, making it vulnerable to attacks.

• It is not compatible with modern hardware.

• It is too complex to implement.

What does AES stand for in encryption technology?

• Advanced Encryption Standard

• Advanced Encryption System

• Algorithmic Encryption Standard

• Algorithmic Encryption System

Which key length is NOT associated with the AES algorithm?

• 256 bits

• 192 bits

• 128 bits

• 512 bits

What type of keys does the RSA algorithm utilize?

• Asymmetric keys

• Symmetric keys

• Quantum keys

• Hybrid keys