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CodesInChaos
  • Member for 12 years, 8 months
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42 votes
4 answers
5k views

Purpose of outer key in HMAC

27 votes
2 answers
8k views

Using same keypair for Diffie-Hellman and signing

20 votes
2 answers
8k views

Why do new versions of TLS use an explicit IV for CBC suites?

20 votes
2 answers
1k views

Can Grover's algorithm be parallelized?

18 votes
2 answers
3k views

Which blind signature schemes exist, and how do they compare?

17 votes
2 answers
5k views

Can one reduce the size of ECDSA-like signatures?

16 votes
2 answers
3k views

In which situations is a length-extension attack a problem?

13 votes
2 answers
4k views

Why do public keys need to be validated?

12 votes
1 answer
4k views

Deterministic nonces in CTR mode

11 votes
1 answer
389 views

Why does Skein use an output transform, but other similar hashes don't?

10 votes
2 answers
1k views

Why xor the message into the state for sponge hashes?

10 votes
1 answer
693 views

Why use $(r,s)$ instead of $(r,s^{-1})$ as DSA signature?

8 votes
1 answer
377 views

Can cycle finding techniques reduce the memory usage of the MitM attack against 2DES and 3DES?

8 votes
2 answers
404 views

Proof of work for standard computers

6 votes
1 answer
857 views

Can a digital money system exist, that's secure, anonymous and allows offline transactions?