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poncho
  • Member for 12 years, 8 months
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108 votes
Accepted

What is the difference between CBC and GCM mode?

97 votes
Accepted

How does RSA signature verification work?

81 votes
Accepted

How does one attack a two-time pad (i.e. one time pad with key reuse)?

54 votes

Have any cryptographic breaks been executed in the real world since World War II?

49 votes
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Signatures: RSA compared to ECDSA

47 votes
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Is using the same IV in AES similar to not using an IV in the first place?

46 votes
Accepted

HMAC vs ECDSA for JWT

43 votes
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How does recovering the public key from an ECDSA signature work?

42 votes

HMAC-SHA1 vs HMAC-SHA256

38 votes
Accepted

Why do we use encrypt-decrypt-encrypt (EDE) in 3DES, rather than encrypting three times?

37 votes
Accepted

In RSA, why is it important to choose e so that it is coprime to φ(n)?

37 votes

Applicability of IBM's projected 50-qubit quantum computer Q to cryptanalysis?

36 votes

2way cryptography

35 votes
Accepted

How to solve MixColumns

31 votes
Accepted

Why must IV/key-pairs not be reused in CTR mode?

30 votes
Accepted

How does IBM's 53-bit quantum computer compare to classical ones for cryptanalytic tasks?

30 votes
Accepted

Chinese Remainder Theorem and RSA

29 votes

Are longer passwords really safer against brute force attacks?

29 votes
Accepted

How does encryption work in elliptic curve cryptography?

28 votes
Accepted

Can a computationally unbounded adversary break any public-key encryption scheme?

27 votes

(Why) should I avoid using a randomized IV for CTR mode?

27 votes
Accepted

NIST Diffie-Hellman prime: how was it picked? Where did it come from?

26 votes
Accepted

Why was the term "discrete" used in discrete logarithm?

26 votes
Accepted

Does Curve25519 only provide 112 bit security?

26 votes

Why use an Initialization Vector (IV)?

26 votes

Why is elliptic curve cryptography not widely used, compared to RSA?

26 votes
Accepted

What was NIST’s reason to switch naming from MD… (Message Digest) to SHA… (Secure Hashing Algorithm)?

25 votes

RSA: What would happen if you chose n to be a prime?

25 votes

Why is SSL on top of TCP?

25 votes
Accepted

Is (AES-)GCM parallelizable?

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