Encryption️ Intermediate Quiz 2
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Encryption️ Intermediate Quiz 2
1. What is "Diffie-Hellman" (DH)?
A protocol for securely exchanging cryptographic keys over public channels
A standard hashing algorithm used for verifying the integrity of data
A legacy type of computer hardware designed for high-speed computation
2. What mathematical problem does RSA rely on?
The performance of simple addition across multiple hardware registers
The efficiency of sorting large lists of integers into ascending order
The difficulty of factoring the product of two very large prime numbers
3. What is "ECC" (Elliptic Curve Cryptography)?
An encryption method that protects data using circular geometric logic
Public-key cryptography based on the algebraic structure of elliptic curves
A specialized encryption protocol designed specifically for smart appliances
4. What is the primary advantage of ECC over RSA?
It provides equivalent security levels using much smaller cryptographic keys
It converts complex ciphertext into strings that are easily read by humans
It executes encryption tasks automatically without requiring mathematical logic
5. What is an "Ephemeral Key"?
A permanent master key that is shared by all authorized users on a network
A temporary key generated specifically for one single session or execution
A physical security key that is printed directly onto an employee access card
6. How is "PFS" (Perfect Forward Secrecy) achieved?
By utilizing static RSA keys that remain unchanged across multiple sessions
By requiring all participants to use a single shared administrative password
By using ephemeral Diffie-Hellman (DHE or ECDHE) for every key exchange
7. What is "Key Stretching"?
Using an algorithm to turn a weak password into a stronger and longer key
Manually increasing the physical size of a USB drive to increase storage
Distributing a single encryption key across a large network of computers
8. Which of these is a key stretching algorithm?
SHA-1
PBKDF2
MD5-X7
9. What is a "Trapdoor Function"?
A security function that deletes sensitive user data immediately after use
A physical locking mechanism used to hide secret servers in secure closets
A function that is easy to compute but very hard to reverse without a secret
10. In cryptography, what is "Confusion"?
A scenario where the end-user forgets their primary decryption password
Making the relationship between the key and the ciphertext very complex
An error that occurs when mixing up two different encrypted files or keys
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