Melab's user avatar
Melab's user avatar
Melab's user avatar
Melab
  • Member for 9 years, 3 months
  • Last seen more than a week ago
45 votes
2 answers
39k views

Is Triple DES still considered safe to use?

12 votes
1 answer
14k views

What is a universal hash function?

10 votes
1 answer
2k views

What is an extendable output function?

9 votes
2 answers
784 views

What asymmetric key exchange algorithms are known besides DH?

9 votes
2 answers
6k views

What is this "finite field cryptography"?

9 votes
2 answers
10k views

Explanation of each of the parameters used in ECC

7 votes
1 answer
625 views

Do other one-time signature schemes exist?

7 votes
1 answer
2k views

What is the security strength of an n-bit HMAC?

7 votes
2 answers
1k views

Post-quantum candidates for asymmetric cryptography with small key sizes

7 votes
3 answers
3k views

Why don't table lookups run in constant time?

6 votes
3 answers
653 views

Why is SIV a thing if MAC-and-encrypt is not the most secure way to go?

6 votes
2 answers
289 views

Possible problems in using a hash algorithm to construct a stream cipher

6 votes
3 answers
2k views

Weaknesses in ARX block ciphers

6 votes
1 answer
3k views

How does Boneh–Lynn–Shacham work?

6 votes
2 answers
1k views

Could an HMAC be used as a hash?

6 votes
3 answers
2k views

Inserting a backdoor into a cryptographic hash function

5 votes
1 answer
439 views

How do the constants in this implementation of AES match up with the algorithm?

5 votes
2 answers
3k views

If the output size of SHAKE128/256 is variable, why is the security fixed at 128/256?

5 votes
2 answers
946 views

A bijective hash function

5 votes
2 answers
511 views

Creating single-cycle permutations

5 votes
2 answers
893 views

Why do stream ciphers like A5/1 and ZUC have "frames"?

5 votes
0 answers
40 views

Tweakable Even-Mansour scheme where the block size is twice the key size?

4 votes
1 answer
259 views

Why does CTR mode become insecure after $2^{0.5 \times n}$ blocks?

4 votes
1 answer
178 views

What is the "standard model" for block ciphers?

4 votes
2 answers
2k views

How secure is the E0 stream cipher used in Bluetooth?

4 votes
1 answer
140 views

Why would we want parallelizable authentication?

4 votes
2 answers
911 views

When does a feedback shift register count as non-linear?

4 votes
0 answers
147 views

Creating an SPN cipher from ChaCha20 or Salsa20's double round function

4 votes
1 answer
1k views

Can (EC)DH keys be used as the signed content in X.509 certificates?

4 votes
2 answers
686 views

Alternative sources of random numbers