Blunder | Simple Keylogger with the ability of FTP Transfer | FTP library
kandi X-RAY | Blunder Summary
kandi X-RAY | Blunder Summary
A Simple Keylogger with the ability of FTP Transfer and Local Storage
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QUESTION
I'm trying to add some sub lists in a List>
once. But the problem is, it's getting added multiple times.
This is the code:
...ANSWER
Answered 2021-Jun-04 at 11:02This is happening because you're adding the list again and again. You need to add the list in your resulting list i.e res only when there is no list present in res corresponding to that particular level.
QUESTION
I'm building a web application and need to authenticate a user with a user password. I'm trying to build it to what would be considered a good security practice in 2021. As far as I've been able to gather from what I've read online, the following would be expected from sending the password from the client to the server over HTTPS (only).
[Edit: Context about the server] On the server side I intend to store a salt per user and a hashed version of their password. On the wire I obviously shouldn't send the clear text password, but also, to prevent playbacks, I shouldn't send the hashed password value either. Hence the client side algorithm below. [End edit]
- User's password is hashed on the client [Edit: with the same salt as used server side].
- Nonce is generated on the client [Edit: This should be server generated and given to the client, see comment]
- The hashed password plus nonce is hashed on the client.
- The nonce and final hash is sent from the client to the server over HTTPS.
- Be sure to cleanup the password on the client (not in my code example).
Here is my experimental sample code:
...ANSWER
Answered 2021-May-16 at 09:15PBKDF2 is designed to reduce brute-force attacks by increasing computational cost. It is not intended to resolve problem of sending plaintext password - this should be done by other security mechanism - secure communication (i.e. TLS 1.3).
If secure communication is broken, then it does not matter if you have sent plaintext or hash of the password.
What you are referring as NONCE should be called SALT.
Basically, PBKFD2:
- Takes any data you send (i.e. password)
- Adds SALT
- Applies PRF (Pseudo-Random Function) number of times
- Returns n-bits of derived password
So, answering your questions:
- It is ok to run PBKDF2 twice, however I would increase number of iterations, rather than run it twice
- 100,000 is reasonable number of iterations
- 24 bytes (192 bits) is reasonable hash size. Although you are using HMACSHA512 as PFR which produces hash of size 512 bits.
- PBKDF2 standard allows 8 bytes SALT, however NIST recommends min. 16 bytes - I would increase SALT size
- As mentioned earlier, you can run PBKDF2 on any string input. In most cases it would be password or passphrase
QUESTION
I've boiled down the logic of something I'm struggling to figure out (new to Python, been a long time since I've done any coding). I have the code below, the intention is to roll a d6 limit
times (in this case 300) and then over a defined number of iterations generate a file with the resulting dice rolls for each 300 iterations into its own file.
What I get is n (loops
) files with the same data in each one. So right now this will return random1.txt, random2.txt and random3.txt and all will have the same values in them.
Obviously I need to reinitialize results
in some way at the start of each iteration of the parent while loop (while loops >=1:
), I just can't figure out how.
If anyone can take pity on a blundering artist I'd appreciate it! This is part of an art project I'm working on to make generative art with an axidraw if anyone is curious.
...ANSWER
Answered 2021-May-15 at 08:29Some code for a blundering artist :-)
QUESTION
I'm new here
I'm having a hard time trying to figure this out and I would really appreciate some advice. I'm actually still learning python basics so please bear with me if its something stupid.
The idea is to provide a list as an input and within the list consisting of other lists. Which I'm then supposed to convert into a question and answer and storing them inside a dictionary. So far this is what I've come up with and I'm currently stuck with accessing the nested list as the first index of each list is a string e.g. ["+", "-", "*", "/"]
I'm currently getting this error:
...ANSWER
Answered 2021-Apr-30 at 13:39You iterate over input
using x
as element. And then you put this element as index which makes it input[input[0]][0]
. Doesn't make much sense, right? It should be
QUESTION
I'm relatively new to both C++ and Wx, so I've been doing a lot of blundering around trying to get this to work over the past few hours, but I seem to have hit a figurative brick wall with this issue.
This code compiles with no errors, but when run, it does nothing. It simply remains running until terminated (e.g. with Ctrl-C), but a window never opens.
Here is the C++ source:
...ANSWER
Answered 2021-Apr-27 at 11:26Your MainFrame
gets destroyed when you reach the end of the function, which is not at all what you want for a frame which is supposed to exist for a long time. The simplest correct thing to do is
QUESTION
So, originally I was doing something that was meant to go like this:
...ANSWER
Answered 2021-Mar-25 at 16:56I needed to use processes rather than using ShellExecute: the Pascal code is given in my edited OP and anything using Windows will be similar.
QUESTION
I have a code in HomeController.php in the Laravel framework, but I could not access the index/homepage it redirects to the login page. what is the blunder I am committing?
...ANSWER
Answered 2021-Mar-25 at 14:47The answer is simple. In the __construct()
method, you specified that every function under this controller must use the auth
middleware
. This will redirect to login
page is the user is not logged in.
There are a number of ways to work around this, the first being to remove the __construct
entirely. However, this is not so recommended.
Another would be to add an except()
function
QUESTION
Ok, so I am using Perforce P4V to back up my work for a Unity project. One of my teammates checked in some changes to the metafiles which broke everything. No problem though right? That's the whole point of using P4. We can just revert that. Only... revert didn't work?
The behavior I am seeing is File A was changed in changelist 1 File B was changed in changelist 2, File C And A were changed in changelist 3
Let's say Changelist 3 contains the bad change I clicked on changelist 2 in my history, then clicked get revision, and checked the Force Operation box. changelist 2 being the last known good state what I expected to happen was to have all of my files restored to the state I was in when changelist 2 was submitted.
Instead, file C was reverted, but File A was not. It's like, since file A didn't change in changelist 2 it didn't bother to get that version.
So I am in a state where all of the unity metafiles are maimed and all prefab references are broken.
When that didn't work I tried using get a revision to go back to the most current state. Then using Backout. That similarly didn't work, metafiles still maimed. I then tried selecting the last known good state and rolling the entire project folder back to that state. Again, didn't work. But then again, I may have maimed my project so badly at that point that nothing would have worked.
The only way I have found that appears to correctly be reverting the files and restoring the broken links is manually selecting each file or folder and reverting it to the last good commit, which is different for each file/folder since they were added and changed in different commits.
What I don't understand is why the force get revision didn't do that on its own. Or what the "correct" way to undo a bad commit is.
I even tried deleting the entire assets folder then using get revision force to pull an entirely new copy from the server using the last known good commit. This appeared to work perfectly once, but when I tried to repeat it to verify my results it went back to losing all of the meta file links. The only dependable way of getting back into a good state appears to be manually force getting each file and folder to the individual last known good commit.
I have consigned myself to having to manually fix my blunder this time, but I'd really appreciate help to know how to do this the right way for the future.
...ANSWER
Answered 2021-Mar-07 at 20:10Use the p4 undo
command.
QUESTION
I tried all ways to display data from the database (Firebase realtime database) There're following config rules:
...ANSWER
Answered 2021-Mar-05 at 07:07Your "data" is an object of JSON, but not an array.
QUESTION
beginner programmer here, trying to make an app that detects blunders and wanting to learn more about the chess.engine library.
I assume that using the analyse function is a discrete, self-contained process that doesn't rely on cache or memory of previous calls from the engine or anything like that.
If this is the case, why do I get multiple different evaluations when calling analyse multiple times in a script:
...ANSWER
Answered 2021-Feb-17 at 22:52Stockfish is deterministic for single-threaded analysis with node and depth limits, state and options being equal.
The engine state is mostly the hashtable (and potentially loaded Syzygy tablebases). So your second analysis will take advantage of the hashtable of the first run. The third run will reuse hashtable results from the second run and so on.
Usually reusing hashtable results is desirable and improves strength, but there is a way to reset the engine state, clearing the hashtable.
In the UCI protocol this is done by sending the hint:
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