Seth's user avatar
Seth's user avatar
Seth's user avatar
Seth
  • Member for 12 years, 6 months
  • Last seen more than 4 years ago
85 votes
Accepted

What is the difference between MAC and HMAC?

42 votes
Accepted

What is the advantage of XTS over CBC mode (with diffuser)?

22 votes
Accepted

Why do "nothing up my sleeve numbers" have low entropy?

21 votes
Accepted

Why does the padding in Merkle–Damgård hash functions like MD5 contain the message length?

18 votes

What is the ideal cipher model?

17 votes
Accepted

Why can't the IV be predictable when its said it doesn't need to be a secret?

17 votes
Accepted

Does using modulo (%) affect quality of randomness?

15 votes
Accepted

AES CTR with similar IVs and same key

12 votes
Accepted

Difference between salted hash and keyed hashing?

8 votes

Concerns about using a hash to determine if specific input data has already been encrypted

8 votes

How vulnerable is the C rand() in public cryptography protocols?

7 votes

Authenticating Very Short (Sub-Block) Data

6 votes

modulo operations in crypto algorithms

6 votes
Accepted

Deterministically combine more than one source of entropy

6 votes

Is there a length-preserving encryption scheme?

6 votes

what are the uses of tweaks in block ciphers?

6 votes
Accepted

Information leakage in real-time voice encryption

5 votes
Accepted

Encrypt-then-MAC paradigm

5 votes

Format preserving encryption FFX

5 votes
Accepted

Encrypt-Mix-Encrypt: Full Diffusion?

5 votes

To understand a fact related to padding in MD5

5 votes
Accepted

Why is Min-entropy significant in cryptography?

4 votes

How is an epsilon of 1/1000 non-negligible?

4 votes
Accepted

Pseudorandom permutations on domains of arbitrary (i.e. not a power of 2) size

4 votes

Is it insecure to encrypt the wrong plaintext?

4 votes
Accepted

Unpredictability vs randomness

4 votes

Is this a pseudo random function (PRF)? F(k,x) = f(k,x) - f(k,x-1)

4 votes
Accepted

Is it possible to construct a secure block cipher of size $2n$ given a secure block cipher of size $n$?

4 votes
Accepted

Is there an existing AEAD scheme with minimal IV requirements?

4 votes

Why is a non fixed-length encryption scheme worse than a fixed-length one?