CCS Unit 3 Asymmetric Key Cryptography

Question 1: What is the Chinese Remainder Theorem used for?

• To determine the prime factorization of a number

• To calculate the area of a triangle

• To solve a system of congruences

• To find the square root of a number

Question 2: How is encryption used in asymmetric key cryptography?

• Encryption is not used in asymmetric key cryptography.

• Encryption is done using the public key of the recipient.

• Encryption is done using the private key of the sender.

• Encryption is done using a shared key between the sender and recipient.

Question 3: How can you encrypt a message using the Chinese Remainder Theorem?

• Convert the message to binary and then encrypt

• Break the message into smaller parts and encrypt each part separately

• Apply the Caesar cipher to the message

• Use the Vigenère cipher

Question 4: What is the process of decryption in asymmetric key cryptography?

• Using the recipient's private key to decrypt the encrypted message

• Using the recipient's public key to decrypt the encrypted message

• Using a random key to decrypt the encrypted message

• Using the sender's private key to decrypt the encrypted message

Question 5: Explain the concept of decryption in asymmetric key cryptography.

• Using a symmetric key to convert the encrypted message back to its original form

• Using the recipient's public key to convert the encrypted message back to its original form

• Using the sender's private key to convert the encrypted message back to its original form

• Using the recipient's private key to convert the encrypted message back to its original form