Cryptography Quiz

What is the primary purpose of cryptography?

• To create software

• To secure information

• To design websites

• To manage databases

Which of the following is a symmetric encryption algorithm?

• SHA-256

• AES

• RSA

• ECC

What does the term 'decryption' refer to?

• Converting plaintext into ciphertext

• Converting ciphertext back to plaintext

• Hashing data

• Creating a digital signature

Which principle of cryptography ensures that data has not been altered?

• Authentication

• Integrity

• Non-Repudiation

• Confidentiality

What is the main disadvantage of symmetric-key cryptography?

• It requires two keys

• Key distribution is a security risk

• It is not secure

• It is slow

Which of the following is an example of asymmetric encryption?

• AES

• DES

• RSA

• RC4

What does 'non-repudiation' in cryptography mean?

• Data can be encrypted

• Data can be decrypted

• Evidence of the origin and integrity of messages

• Data can be stored securely

What is the function of a digital signature?

• To create a public key

• To hash passwords

• To verify the authenticity of a message

• To encrypt data

Which algorithm is commonly used for password storage?

• AES

• RSA

• DES

• SHA-256

What is a brute force attack?

• Extracting data from hardware

• Using a public key for encryption

• Trying all possible keys

• Intercepting communication