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evening
  • Member for 9 years, 1 month
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56 votes
3 answers
55k views

Why hash the message before signing it with RSA?

9 votes
2 answers
11k views

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

8 votes
2 answers
3k views

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

6 votes
1 answer
2k views

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

5 votes
4 answers
8k views

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

4 votes
2 answers
1k views

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

3 votes
2 answers
621 views

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

3 votes
1 answer
1k views

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

2 votes
4 answers
2k views

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

2 votes
1 answer
351 views

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

2 votes
1 answer
544 views

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

2 votes
3 answers
2k views

What block cipher is used for CBC-MAC?

2 votes
3 answers
848 views

Can ECB mode really leak some characters?

2 votes
1 answer
8k views

How can we get CA's public key?

1 vote
1 answer
786 views

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

1 vote
3 answers
839 views

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

1 vote
1 answer
304 views

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

1 vote
1 answer
312 views

Why send a challenge with CHAP?

0 votes
2 answers
2k views

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

0 votes
2 answers
322 views

Why does DSS have such formulas?

-1 votes
2 answers
93 views

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