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RSA and Cryptography Challenge

Test your knowledge on asymmetric and symmetric cryptography with our comprehensive quiz! This quiz covers a wide range of topics in secure communication and gives you the chance to deepen your understanding.

Challenge yourself with questions such as:

The hardest part of RSA operations
Understanding digital signatures
The importance of freshness in messages

28 Questions7 MinutesCreated by EncryptingLion321

Which of the following is considered the hardest part in RSA operation?

Finding the prime factors of n

Generate a Solve a linear systemrandom number

Generate a random number

Take powers: gr mod n

In general, asymmetric ciphers provide greater strength than symmetric ciphers for the same key length.

False

True

Which of the following does not fall under authentication attack?

Availability

Interleaving

Forced Delay

Impersonation

Which security protocol is being described in the following: Alice and Bob agree on a prime and a generator. 2. Alice and Bob generate private keys 3. They then send each other the generator exponentiated by their private key

Die Hellman

Integer Factorization

ElGamal

Digital Signature Algorithm (DSA)

"Lamport’s One Time Passwords prevents _________. "

Replay attack

Attack on integrity

Authentication attack

Attack on condentiality

What is the goal behind ensuring the "freshness" of a message?

To ensure that compromise of a individual session does not easily lead to compromise of future sessions

To ensure that compromise of a individual session does not easily lead to compromise of past sessions

To prevent pre-computation attacks and/or a brute force on the message space

To enforce message integrity and/or increase the prevelance of the avalanche eect

Which of the following causes selective forgery in ElGamal signature?

Weak generator chosen

Weak hash function

Prime number is not large

Weak private public key pairs

What can a system designer do to reduce the effectiveness of precomputation attacks when attempting to crack all passwords in the system?

Salt the passwords

Encrypt the passwords with a strong symmetric cipher

Use a collision resistant hash function

Implement something to ensure "freshness"

Which of the following statement is true?

An algorithm that can solve DHP would also solve DLP.

An algorithm that can solve DLP would also solve DHP.

For DES, using a 56-bit key and a 64-bit block, if exhaustive key search is used it is expected to yield the key in ______ operations

2 55

2 63

2 56

2 57

For symmetric key encryption, how many keys are required if 4 users wish to communicate with each other in the same network?

Which of the following is a discrete logarithmic problem?

Calculate a and b, where p, g, ga and gb are given.

Calculate g, where p, a and ga are given.

Calculate a and b, where p, g, ga and gb are given.

Calculate a, where g,b are given.

What method is often used to ensure "freshness"?

Nonce

Asymmetric ciphers

Key renegotiation

Digital signatures

Which of the following is not a desirable parameter for digital signature generation?

Public key

Signature scheme

Message to be signed

Private key

"Zero Knowledge Proofs are designed to ___________________"

Allow a user to demonstrate knowledge of a secret while revelaing no information about the secret.

Prevent pre-computation on the key space, and hence reduce the likelihood of a brute force attack

Prevent replay attacks, where an attacker repeats a previously seen message without necissarily knowing the contents

Ensure that the current communication is considered "fresh"

Asymmetric cryptography is more ecient than symmetric cryptography for key management in large systems.

True

False

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RSA and Cryptography Challenge

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