User user40602 - Cryptography Stack Exchange

user40602

Member for 9 years, 5 months
Last seen more than 2 years ago

14 Questions

Score Activity Newest Views

14 votes

2 answers

2k views

The effect of truncated hash on entropy

asked Mar 26, 2015 at 20:50

5 votes

1 answer

1k views

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

asked Oct 3, 2016 at 10:34

3 votes

1 answer

3k views

Practical brute-force attack on 128 bit encryption

asked Mar 27, 2015 at 12:11

2 votes

2 answers

204 views

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

asked Apr 10, 2017 at 21:14

2 votes

3 answers

414 views

How to combine pepper in random string generation

asked Apr 11, 2017 at 8:59

2 votes

1 answer

569 views

Very simple and minimal replay prevention scheme

asked Oct 5, 2016 at 9:57

1 vote

2 answers

335 views

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

asked Feb 17, 2017 at 10:22

1 vote

2 answers

348 views

Are this recommendations from Colin Percival correct? [closed]

asked Feb 19, 2017 at 5:37

1 vote

1 answer

620 views

Problem with testing MD5 collisions

asked Mar 6, 2015 at 17:52

1 vote

0 answers

132 views

Separate keys for encryption and MAC? [duplicate]

asked Mar 7, 2015 at 10:26

1 vote

0 answers

106 views

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

asked Mar 9, 2015 at 16:03

1 vote

1 answer

663 views

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

asked Mar 23, 2015 at 14:09

1 vote

1 answer

1k views

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

asked Oct 3, 2016 at 5:30

0 votes

1 answer

89 views

Restricting symmetric key usage

asked May 4, 2017 at 20:09