Linked Questions

0 votes
1 answer

Making already hashed wordlists of all possible combinations [duplicate]

Let us imagine a situation where a company stores its user passwords (let's ignore salts, etc for now) using some hash (say sha256) and the company gets breached. All of the username and password ...
xplo1t's user avatar
  • 1
0 votes
1 answer

Rainbowtable - Start with plain text [duplicate]

I know how to use rainbow tables. I've already read the other questions this topic here. Well but there is still one question left. As an attacker, I usually have a hash value of a password and ...
MrX's user avatar
  • 1
0 votes
1 answer

When is it best to use a Rainbow Table attack? [duplicate]

Under what circumstances that a Rainbow Table attack is best used?
curiouspanda's user avatar
942 votes
11 answers

How to securely hash passwords?

If I hash passwords before storing them in my database, is that sufficient to prevent them being recovered by anyone? I should point out that this relates only to retrieval directly from the database,...
AviD's user avatar
  • 73.3k
81 votes
5 answers

How does hashing work?

I have been interested in Information Security. I was recently introduced to the idea of hashing. What I currently understand about hashing is that it takes the password a user enters. Then it ...
Griffin Nowak's user avatar
43 votes
9 answers

Is salting a hash really as secure as common knowledge implies?

I'm implementing a salt function for user passwords on my web page, and I'm wondering about some things. A salt is an extension added to a password and then hashed, meaning the password is stored in ...
Thomas Andreè Wang's user avatar
43 votes
9 answers

Do non-keyboard characters make my password less susceptible to brute forcing?

I can put characters in my password for which there are no keys on a keyboard. On Windows, Alt+#### (with the numpad) inserts the character for whatever code you type in. When I put this in a ...
jnm2's user avatar
  • 1,782
54 votes
4 answers

Why is using salt more secure?

Storing the hash of users' passwords, e.g. in a database, is insecure since human passwords are vulnerable to dictionary attacks. Everyone suggests that this is mitigated via the use of salts, but the ...
Jim's user avatar
  • 1,415
59 votes
2 answers

How Does A Random Salt Work? [duplicate]

I don't understand how using a random salt for hashing passwords can work. Perhaps random salt refers to something other than hashing passwords? Here is my thought process: The salt is used to add ...
Kevin DiTraglia's user avatar
51 votes
2 answers

Is "real salt" the same as "initialization vectors"?

In the question about real vs. fake salt, the answers describe how real salt 'perturbs the encryption algorithm.' I know roughly how initialization vectors work; is this the same concept, or something ...
Bryan Agee's user avatar
  • 1,206
27 votes
4 answers

how long does it take to actually generate rainbow tables?

I've been reading up about rainbow tables as I think they're quite interesting cause they're actually a pretty simple concept. Anyway, I was wondering, has anyone been involved in actually generating ...
stickman's user avatar
  • 1,590
9 votes
2 answers

Does Rainbow Table Not Require Decompression?

I understand that a rainbow table solves the storage problem when one attacks a password using precomputed hashes. However, since rainbow tables are essentially a compressed version of the hashes--...
Minaj's user avatar
  • 1,576
6 votes
5 answers

What password cracking software is commonly used?

I am curious to know how secure my passwords are. What password cracking software is commonly used? Preferably open source. EDIT: I am actually looking to crack my passwords used on services I don'...
user606723's user avatar
8 votes
3 answers

What key does Linux use when storing user passwords?

Linux typically stores user names and password hashes in /etc/passwd or /etc/shadow. Now lets say I have an old CentOS distro and I want to attempt to recover a user's password (it's in a legal, ...
anthonyvd's user avatar
  • 191
15 votes
2 answers

Estimating the size of a rainbow table

What are rainbow tables and how are they used? Gives a very precise answer about what rainbow tables are and how they are used. I had always confused hash-tables and rainbow tables. My question is ...
sudhacker's user avatar
  • 4,320

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