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user40602
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12 votes
2 answers
2k views

The effect of truncated hash on entropy

3 votes
1 answer
2k views

Practical brute-force attack on 128 bit encryption

3 votes
1 answer
1k views

Choosing between simple Hash and HKDF to derive the second key used for MAC

2 votes
1 answer
538 views

Very simple and minimal replay prevention scheme

1 vote
2 answers
264 views

P2P encryption - Do I need a different session key each time?

1 vote
2 answers
304 views

Are this recommendations from Colin Percival correct? [closed]

1 vote
2 answers
179 views

Should I use independent symmetric keys for each client should I use keys derived from a master key?

1 vote
3 answers
332 views

How to combine pepper in random string generation

1 vote
1 answer
571 views

Problem with testing MD5 collisions

1 vote
0 answers
124 views

Separate keys for encryption and MAC? [duplicate]

1 vote
0 answers
102 views

AES-128/192 safer than AES-256 in practice? [duplicate]

1 vote
1 answer
603 views

Should I remove these use cases of MD5/SHA1 from my program?

1 vote
1 answer
876 views

AES-128 + HMAC-SHA-256 but HMAC truncated

0 votes
1 answer
79 views

Restricting symmetric key usage