Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with passwords
Search options not deleted
user 104164
Passwords are secret keys which human beings can memorize.
1
vote
2
answers
277
views
Hashes to passwords with PBKDF2
If an attacker wants to hack the passwords of $2^{10}$ users. … How many hashes would an attacker need to do to get all passwords in the worst case? …
- 161
3
votes
2
answers
1k
views
Password Hashing based on Common Passwords
If an attacker has a database of 1,000 users' hashed passwords which are hashed with SHA-256 with a 128-bit salt and all of these users used 10,000 common passwords. … How many hashes will the hacker need to do to recover all passwords? …
- 161
1
vote
0
answers
98
views
How many hashes to recover a salted password? [closed]
If a password p is selected from a space of 2^64 passwords, and the server stores this as a hash, h = SHA-256(p||s) where s is a random 128-bit salt. … I was thinking that this is a pre-image attack so the attacker needs to find the same hash as the passwords. SHA-256 provides 256 bits of pre-image resistance. …
- 161
4
votes
2
answers
2k
views
Password hashing and salting with SHA-256 on $2^{64}$ password space
If a password is randomly chosen from a space of $2^{64}$ passwords and is stored as an SHA-256-bit hash and a 128-bit salt, how many hashes does an attacker need to perform to recover the password in …
- 161