Cybersecurity CodeHS Assymetric Encryption Quiz

What is the main advantage of public key cryptography over symmetric key cryptography?

• Public key cryptography allows for secure communication without the need to share a secret key.

• Public key cryptography requires sharing a secret key for secure communication

• Public key cryptography is less secure than symmetric key cryptography

• Public key cryptography is not suitable for encrypting data

Explain the concept of public key cryptography with an example.

• Public key cryptography involves using a private key to encrypt the message

• Public key cryptography uses a single key for both encryption and decryption

• Public key cryptography uses a pair of keys - a public key and a private key. An example is RSA encryption, where the public key is used to encrypt the message, and the private key is used to decrypt it.

• An example of public key cryptography is the Caesar cipher

What is the full form of RSA in the RSA algorithm?

• Rapid Security Access

• Robust System Authentication

• Rivest-Shamir-Adleman

• Random Security Algorithm

How does the RSA algorithm work to encrypt and decrypt messages?

• It uses the same key for both encryption and decryption.

• It doesn't use any keys for encryption and decryption.

• It relies on a symmetric key for encryption and decryption.

• It uses a public key to encrypt and a private key to decrypt messages.

Explain the process of encryption using the RSA algorithm.

• The process of encryption using the RSA algorithm involves using the sender's private key to encrypt the message before sending it.

• The process of encryption using the RSA algorithm involves using the recipient's private key to encrypt the message before sending it.

• The process of encryption using the RSA algorithm involves using a symmetric key to encrypt the message before sending it.

• The process of encryption using the RSA algorithm involves using the recipient's public key to encrypt the message before sending it.

What is the purpose of digital signatures in cybersecurity?

• To create duplicate copies of digital documents

• To encrypt digital documents for secure storage

• To slow down the processing speed of digital messages

• To verify the authenticity and integrity of digital documents or messages.

How does a digital signature ensure the authenticity and integrity of a message?

• A digital signature ensures the authenticity and integrity of a message by using a random number generator

• A digital signature ensures the authenticity and integrity of a message by using a public key to encrypt the message

• A digital signature ensures the authenticity and integrity of a message by using a handwritten signature

• A digital signature ensures the authenticity and integrity of a message by using cryptographic algorithms to create a unique hash value for the message, which is then encrypted with the sender's private key.

What is the role of the private key in public key cryptography?

• The private key is used to decrypt the message.

• The private key is used to encrypt the message.

• The private key is not used in public key cryptography.

• The private key is used to generate the public key.

What is the main disadvantage of public key cryptography?

• Public key cryptography is less secure than symmetric key cryptography.

• Public key cryptography requires more computational resources than symmetric key cryptography.

• Public key cryptography does not allow for secure communication.

• Public key cryptography requires the sharing of a secret key.

What is the purpose of the public key in the RSA algorithm?

• The public key is used to decrypt the message.

• The public key is used to encrypt the message.

• The public key is not used in the RSA algorithm.

• The public key is used to generate the private key.