Encryption Concepts

What is the difference between symmetric and asymmetric encryption algorithms?

• Symmetric encryption uses a pair of keys for encryption and decryption, while asymmetric encryption uses the same key for both encryption and decryption.

• Symmetric encryption uses the same key for both encryption and decryption, while asymmetric encryption uses a pair of keys (public and private) for encryption and decryption.

• Asymmetric encryption is faster than symmetric encryption.

• Symmetric encryption is more secure than asymmetric encryption.

Explain how Public Key Infrastructure (PKI) works in encryption.

• Public Key Infrastructure (PKI) relies solely on symmetric encryption for data protection.

• Public Key Infrastructure (PKI) uses a pair of keys: public for encryption and private for decryption, ensuring secure communication.

• Public Key Infrastructure (PKI uses the same key for encryption and decryption.

• Public Key Infrastructure (PKI) does not involve any key pairs for secure communication.

What is the purpose of digital signatures in encryption?

• To enhance the visual appeal of encrypted messages

• To verify the authenticity and integrity of a message or data.

• To increase the speed of data transmission

• To decrease the complexity of encryption algorithms

What is Advanced Encryption Standard (AES) and why is it widely used?

• AES is the Advanced Encryption Standard, widely used for its efficiency, security, and adoption in various applications.

• AES stands for Advanced Encryption System and is used for basic data storage

• AES is primarily used for entertainment purposes and not for secure data transmission

• AES is an outdated encryption method that is rarely used

List three methods of encryption commonly used in data security.

• Public Key Encryption

• Digital Signature

• Transposition Encryption

• Symmetric Encryption, Asymmetric Encryption, Hashing

Explain the concept of encryption protocols and provide an example.

• An example of an encryption protocol is HTTP.

• Encryption protocols are used for sharing public data without any security measures.

• Encryption protocols are sets of rules and procedures that govern the secure transmission of data. An example of an encryption protocol is SSL/TLS.

• Encryption protocols are only relevant for physical security, not digital security.

What are the advantages of using symmetric encryption over asymmetric encryption?

• Symmetric encryption is easier to implement and manage than asymmetric encryption.

• Symmetric encryption is faster, more efficient, and less computationally intensive compared to asymmetric encryption.

• Symmetric encryption allows for key distribution without a secure channel.

• Symmetric encryption is more secure than asymmetric encryption.

What are the disadvantages of using symmetric encryption?

• Key distribution challenges and lack of non-repudiation

• High computational overhead

• Limited scalability

• Vulnerability to brute force attacks

What are the advantages of using asymmetric encryption over symmetric encryption?

• Asymmetric encryption is faster and more efficient than symmetric encryption.

• Asymmetric encryption provides better security and enables secure key exchange without requiring a secure channel.

• Asymmetric encryption requires less computational power than symmetric encryption.

• Asymmetric encryption is easier to implement and manage compared to symmetric encryption.

What are the disadvantages of using asymmetric encryption?

• Incompatibility with certain systems, susceptibility to man-in-the-middle attacks, difficulty in implementation

• Slower performance, higher computational requirements, complexity in key management

• Limited security, vulnerability to brute force attacks, lack of confidentiality

• Faster performance, lower computational requirements, simplicity in key management