Questions tagged [hashing]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
1answer
41 views

get the hash of a string and eventually compare it to a hash

I want to run a one-liner to enable me to get the hash of a string and eventually compare it to a hash I can just copy at the end of the command later. I'm confident I can figure out how to do the ...
0
votes
2answers
96 views

shasum of a directory in macos

I'm writing a shell script that uses the shasum to check if the contents of a directory have changed. On Linux and FreeBSD, the shasum have the same behavior when I do shasum <directory> ...
0
votes
1answer
48 views

What is the hash for Utilman.exe

I've a Windows 8.1 machine, and have accidentally deleted Utilman.exe. I would like to know the EXACT SHA-256 hash of this version of the file. (64-bit OS, x64 processor, Windows 8.1) If there's ...
1
vote
0answers
67 views

rtorrent fails downloads over 4GB on raspberry pi

I'm running libtorrent/rtorrent master (13.7) on raspi 3b+ with raspbian. I can download torrents under 4GB in size without any problems (for example debian netinstall at around 290MB). However ...
0
votes
0answers
23 views

Hash changes just after operning a PDF file

Is it possible or normal that the hash value of a document changes just after the first opening of it? I used sha256sum function within Ubuntu terminal to check the hash values before and after the ...
0
votes
0answers
120 views

HUAWEI optical router password change

I have an optical router from Huawei, and I need to change my super user password. In a downloaded config file, I found this line: UserName="ADMIN_USER" Password="HASHED_PASSWORD" UserLevel="0" ...
0
votes
1answer
40 views

unzipping and re-zipping a file results in a different hash

I have an ev3 file called robot.ev3, when I ran file on it, the output I got was robot.ev3: Zip archive data, at least v2.0 to extract, I unzipped the file using unzip robot.ev3 -d robot moved into ...
0
votes
1answer
42 views

Since a copy was made, No corruption on Source drive or Target drive?

. Definition: A hash function is an algorithm that compresses messages of arbitrary length into short digests of fixed length. Would doing 3 hashes (md5, sha1, sha512) give more certainty than ...
2
votes
1answer
422 views

Where is the Windows 10 PIN stored?

I know that Windows 10 stores passwords in a NTLM hash in a SAM file. Where is the Windows 10 PIN hash stored?
0
votes
1answer
86 views

Windows 2008 R2 stand-alone: Change of hashing algorithm for user passwords

On a Windows 2008 R2 machine, which is not part of an AD-environment, the local account passwords are stored using unsalted MD4 hashes. Is it possible, to Change the hashing algorithm and enable ...
0
votes
1answer
49 views

Data corruption on copying: large files and small files

I know that files sometimes corrupted during copying, and for that reason people check them with hash sums. (MD5 or CRC32 seems to be OK for random errors). But usually, when I read about this use ...
0
votes
1answer
46 views

Powershell: result hash file verification Uppercase. It's ok?

I used PowerShell with the Get-FileHash command to verify the hash of a virtualbox installation file and the result was that the hash string generated by powershell matches but is in uppercase. The ...
0
votes
1answer
34 views

Windows 10 Only run a script that's unchanged?

I have a VHD that I want to auto mount in Win10. It seems I need to create a script to do this and then create a scheduled task to run it. I may be being paranoid, but how do I know that my script is ...
0
votes
0answers
22 views

Stop users from using vim to overwrite file

I have a program that's generating a hash file that only root has the permissions to read and write. Why am I still able to use vi to open it ( not being able to read anything ), then using the :wq! ...
0
votes
0answers
24 views

Getting wrong hash values from files in HKLM\SAM, Windows 10

Using information from this link: http://www.insecurity.be/blog/2018/01/21/retrieving-ntlm-hashes-and-what-changed-technical-writeup/#New_Style_Hash_Retrieval I try to do the same thing on VM with ...
0
votes
0answers
107 views

Using Hashcat to load a compressed wordlist

after researching a little bit i was able to find out that this is possible, but the people who were able to accomplish this didn't really post an example or command line to do so... The title says it ...
1
vote
0answers
33 views

How come after generating a screenshot at the same coordinates every time, files may sometimes have different hash signatures?

I am having a hard time figuring out the reason to this. I have a macro running that is screen capturing using snipping tool at the same exact coordinates every single time within a web site (a table) ...
0
votes
1answer
133 views

Recovering/Removing the BIOS password of a Toshiba Satellite M35-S320

I have this Toshiba Satellite M35-S320, with a BIOS password. The problem is, I was a bonehead and had no idea what I was doing when I set a (random) password. I forgot the password immediately. Is ...
1
vote
0answers
69 views

Reconstruct small file from hash values only [closed]

I am looking for if it's possible to losslessly recreate the original content of a text file only from a stored hash value (I prefer CRC checksum algorithm instead of others, because it's footprint is ...
19
votes
6answers
3k views

How to compare parts of files by hash?

I have one successfully downloaded file and another failed download (only the first 100 MB of a large file) which I suspect is the same file. To verify this, I'd like to check their hashes, but ...
2
votes
3answers
5k views

Get the fingerprint of an existing SSH public key

This Question asks about getting the fingerprint of a SSH key while generating the new key with ssh-keygen. But how does one get determine the fingerprint of an existing public key in a .pub file? ...
0
votes
1answer
94 views

How do i install gtkhash to windows 10?

My question is about how to install gtkhash to windows 10, as i can't seem to find any guides on how to. I have tried downloading gtkhash from https://gtkhash.sourceforge.io/ but all i got was a svg ...
-2
votes
1answer
59 views

Why is your username AND password not hashed and salted? [closed]

Since common responses from Username and/or Password failure at logging is ALWAYS returned "Your Username OR Password are incorrect" due to increased security then why would systems not store the ...
0
votes
2answers
141 views

What is causing these two apparently identical files to have different hashes?

I am unable to figure out why the following two files are yielding different hashes (SHA1, CRC32, SHA384, whatever): https://cdn.jsdelivr.net/npm/jsonify-error@1.2.1/dist/jsonify-error.js https://...
1
vote
0answers
185 views

John the Ripper not fully using CPU

I'm using John the Ripper to crack an old ZIP archive encrypted with PKZIP, and although I've set the thread count to match the number of cores I have (4) only about 50-60% of my CPUs are being used ...
5
votes
3answers
14k views

How can I generate an MD5 sum for a folder on Windows?

There are several posts about generating MD5 sums for files and/or folders on various Windows platforms. However, none of these worked for me. I tried: Windows CertUtil: CertUtil -hashfile myFileName ...
11
votes
3answers
10k views

How to take sha256sum of file and compare to check in one line?

I keep on finding myself wanting to download and check the integrity of the download immediately in a script, but I haven't been able to find the right incantation of sha256sum. MY_SHA256=...
0
votes
1answer
55 views

Cannot open System File in Windows 10

I recently am trying to find my windows password after seeing some anti-virus software asked for my Windows credentials for me to log into my computer. So I thought I might be able to reach my own ...
0
votes
0answers
104 views

Windows 7 installer incorrect SHA-1 after copying .iso file

I have a Windows 7 Installer (x64, ultimate, SP1, u) on my NAS. I checked its SHA-1, and it was correct (starting with 36ae60de). I copied this .iso file to my pendrive (SanDisk Extreme with very high ...
4
votes
1answer
238 views

What might be the source/logic behind the hash values used by “Unified Logging” system on macOS?

This question was inspired by another question and answer thread regarding false-positives on a Mac for an—apparently—PC only virus/malware. My answer there posits that the hash ...
0
votes
1answer
159 views

Verifying dd-wrt checksum (old docs out of date)

Trying to install dd-wrt firmware on TP Link Archer C9 v1 (AC1900) router. Want to verify the integrity of my download, but can't find any hashes or checksums. Docs on the wiki about how to verify ...
0
votes
1answer
292 views

What algorithm is used to produce the 32 bit password key in an edit protected microsoft office (specifically word) document?

If you save a legacy (.doc era) word document with edit protection, you can find the password key stored within the file. For ease, this can be found by saving to an .xml or .html file and inspecting ...
3
votes
3answers
15k views

How to generate MD5 hash value for multiple files in a folder using cmd

As mentioned in this page, the command:CertUtil -hashfile yourFileName MD5can be used to obtain the MD5 hash value for a particular file. How can I find the MD5 hash values for multiple files in a ...
1
vote
1answer
161 views

How to get rid of STDIN string while using the following function in PowerShell and two other things?

I am working on Windows 8.1 Pro with PowerShell 5.0. Let's say I want to get a pure SHA-256 hash string of a file. I defined a following function: function sha256sum([string]$arg) { Get-...
1
vote
1answer
195 views

How do I check I copied a bunch of files and folders correctly from an MTP device?

That. Windows 10 Home, Android 7.1.2 device. I want to check if it copied right, as it's a backup.
1
vote
1answer
580 views

Find duplicate hashes

I have a bunch of files (4800 files), that I believe contain many duplicates and triples. Problem is that they don't also have the same names. I already weeded out the easy ones with same names. The ...
2
votes
3answers
490 views

How does Virustotal compute the hash?

When you select a file on your computer to be uploaded and analyzed by Virustotal it first computes the hash of the file to see if it hasn't already been scanned. How does the hash computation happen -...
0
votes
1answer
815 views

Create a 6 digit “hash” from a file

I need a tool to generate a 6-digit "hash" from a file. Naturally, identical files should always create the same hash. What is a good way to do this? This is required on a vanilla debian system. I ...
0
votes
2answers
483 views

If I generate a hash for a file stored on a network share, is the entire file sent over the wire? If not why?

Scenario: I would like to generate a hash of a file stored on a remote server. For this example lets say we are using windows file sharing for both the client and the server. I, as the client, locate ...
1
vote
1answer
845 views

Windows 10 ISO genuinity

I have downloaded Windows 10 and computed the hashes. But I could not find a place including all possible genuine hashes, so I can make sure the ISO is genuine. How can I find if it is indeed genuine? ...
0
votes
0answers
50 views

Libreoffice download unexpectedly large with non-matching hashes

Today I downloaded LibreOffice MSI for windows x86_64 and the download was taking quite long (about 1 or 2 minutes.) The website said that it was 5.1MB but chrome reported 223MB. Windows explorer ...
1
vote
1answer
2k views

Why does my md5sum hash not match other md5s?

So for a school assignment we are working with hashes. However I've encountered a problem where my file.txt containing: test hashes test hashes without quotes doesn't match the hash from HashCalc (...
0
votes
1answer
350 views

What hash type is used by DISM / SFC?

What hash type is represented below? Example 1: 0h+p0j3/Y9s1ly0mqtU741bzLjqz12mDQGKtVScMeKg= Example 2: uNryI5MYSV5U5O1NuFPGYexSxm2nLFrRXVqga+nQjw4= These hashes came from the CBS.log file after ...
9
votes
2answers
10k views

Safe way to verify that a Microsoft ISO has not been tampered with

I'd like to make sure an ISO (disc image) I have for a Microsoft Windows 10 OS is genuine. The way I usually do this with any file is by computing a hash of the file and comparing the result to the ...
0
votes
0answers
134 views

why file hash not match after download windows kb3185330 monthly quality rollup?

After downloading the kb3185330 monthly quality rollup for Windows 7 x64 from Microsoft site, I compared the hashes for the downloaded file named : (Windows6.1-KB3185330-x64.msu) from the site and ...
8
votes
6answers
5k views

How to create md5 hash via Arch Linux commandline?

In Arch Linux, how can I create a single md5 hash for a password using the command line? Of course, I am aware that there are secure password hashing algorithms available, which md5 is not, but this ...
3
votes
1answer
687 views

Which checksum-generating command line programs are native to macOS?

[Migrated question from stackoverflow here, because they said it was off-topic.] I'm looking for a list/an overview of the command-line programs native to macOS that let you calculate checksums. I ...
0
votes
1answer
358 views

Check MD5 of a file header hosted on a webserver

I am writing a bash script to periodically download a setup file using cURL. The problem is the following, the file is around 110 MB and always have the same filename. I can download the file, check ...
-1
votes
2answers
135 views

Is there a tool like diff -r that compares a directory tree against a manifest file using hashes?

Here's my situation. I have two cold-storage archive volumes that (should) contain identical sets of data. These volumes contain infrequently accessed backups. I am concerned that, eventually, bitrot ...
0
votes
0answers
1k views

John the Ripper error Crash recovery file is locked

I am on Windows 10 using CygWin, and I have just downloaded John The Ripper Jumbo 1.7.9. I was following the tutorial at Ethical Hacking Central to try to learn how to use the program. I created the ...