Understanding Encryption Techniques Quiz

What is the primary purpose of Public Key Infrastructure (PKI)?

• To encrypt data using symmetric keys

• To manage digital certificates and public keys

• To hash data for integrity

• To compress data for efficient storage

What is a major vulnerability of the MD5 hash function?

• It is too slow for modern applications

• It is susceptible to collision attacks

• It requires a public key for decryption

• It cannot be used for digital signatures

Which of the following is NOT a characteristic of symmetric key encryption?

• Uses the same key for encryption and decryption

• Generally faster than asymmetric encryption

• Requires a pair of keys: public and private

• Suitable for encrypting large amounts of data

What is the main disadvantage of using MD5 for cryptographic purposes?

• It is too complex to implement

• It is vulnerable to pre-image attacks

• It requires too much computational power

• It is not supported by modern browsers

In symmetric encryption, what is the primary challenge associated with key management?

• Generating keys that are long enough

• Ensuring that keys are kept secret and distributed securely

• Finding algorithms that are fast enough

• Ensuring compatibility with all operating systems

Which of the following is a common use case for MD5, despite its vulnerabilities?

• Encrypting sensitive data

• Creating digital signatures

• Verifying file integrity

• Securing online transactions

All Public Keys have a corresponding Private Key

• True

• False

What is a key advantage of using asymmetric encryption over symmetric encryption?

• It is less complex to implement

• It is faster for encrypting large data

• It eliminates the need for secure key distribution

• It uses the same key for encryption and decryption

Which of the following is a primary function of a digital certificate in PKI?

• To hash data for integrity

• To verify the identity of the certificate holder

• To compress data for efficient storage

• To encrypt data using a symmetric key

In the scenario with Bob and Alice, Bob send an encrypted message to Alice. What key of Alice's does Bob use to encrypt the message.

• Public

• Private

• Public and Private Key

• Symmetric