User evening - Cryptography Stack Exchange

evening

Member for 9 years, 1 month
Last seen more than a month ago

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21 Questions

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56 votes

3 answers

55k views

Why hash the message before signing it with RSA?

asked Jan 7, 2014 at 23:44

9 votes

2 answers

11k views

What happens when a root CA has its private key compromised?

asked Nov 13, 2013 at 15:04

8 votes

2 answers

3k views

How do we prove that AES, DES etc. are secure?

asked Oct 7, 2013 at 0:34

6 votes

1 answer

2k views

Why use Needham-Schroeder if we have Diffie-Hellman?

asked Jan 12, 2014 at 16:09

5 votes

4 answers

8k views

Why use a timestamp and how can someone know it's the correct one?

asked Nov 24, 2013 at 15:26

4 votes

2 answers

1k views

Why have Nonce and why encrypt everything in step 2 for Needham-Schroeder?

asked Jan 9, 2014 at 23:00

3 votes

2 answers

621 views

Can you really insert the text you want in one-time pad?

asked Aug 28, 2013 at 13:38

3 votes

1 answer

1k views

Why have 4th and 5th steps in Needham-Schroeder Protocol?

asked Nov 13, 2013 at 18:00

2 votes

4 answers

2k views

Why not just generate random strings for one-time password (OTP)?

asked Nov 18, 2013 at 17:10

2 votes

1 answer

351 views

Why encrypting with private and public keys produce the same result?

asked Jan 8, 2014 at 0:18

2 votes

1 answer

544 views

What kind of machine can generate 100-400 digits prime number? RSA

asked Oct 13, 2013 at 23:38

2 votes

3 answers

2k views

What block cipher is used for CBC-MAC?

asked Oct 21, 2013 at 19:14

2 votes

3 answers

848 views

Can ECB mode really leak some characters?

asked Nov 2, 2013 at 17:26

2 votes

1 answer

8k views

How can we get CA's public key?

asked Nov 13, 2013 at 14:53

1 vote

1 answer

786 views

I've got my private key compromised. How does CRL work?

asked Nov 13, 2013 at 14:56

1 vote

3 answers

839 views

Does MAC provide origin authentication? Why not just use symmetric encryption?

asked Oct 20, 2013 at 16:52

1 vote

1 answer

304 views

Why routers don't just use Diffie-Hellman protocol?

asked Nov 13, 2013 at 17:04

1 vote

1 answer

312 views

Why send a challenge with CHAP?

asked Nov 18, 2013 at 17:22

0 votes

2 answers

2k views

Why use CBC-MAC? Why not just apply hash function on the whole message?

asked Jan 7, 2014 at 15:42

0 votes

2 answers

322 views

Why does DSS have such formulas?

asked Jan 9, 2014 at 1:52

-1 votes

2 answers

93 views

Is it safe to store mnemonic seed in the email if I change random 2 words?

asked Jul 10, 2020 at 20:41