Questions tagged [hashing]
The hashing tag has no usage guidance.
182
questions
0
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0answers
23 views
Find a string for which hash() starts with 0000 [migrated]
I've got a task from my professor and unfortunately I'm really confused.
The task:
Find a string D1 for which hash(D1) contains 4 first bytes equal 0.
So it should look like "0000....."
As I ...
0
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0answers
43 views
Why is there a “Hash Sum mismatch” when I switch to a bridged network connection with VMWare on macOS?
I'd prefer to run my virtual machine in a bridged configuration so that it appears as another machine on my network. However, when I switch from a NATed configuration to a Bridged connection I get &...
-1
votes
1answer
32 views
Cant we use md5 like hash algorithms to store big data?
i've read a paper about how hash algorithms word in general and i saw one strange thing.
MD5 input length is unlimited and the output length are always the same
so isn't that mean you can turn any ...
0
votes
1answer
69 views
wrong hash pasted after copying on Windows 10
well i don't know how to explain it but always when i copy some hash from any hashin like base64 sha256 md5 etc even a txid of Bitcoin or Ethereum or Denarius my Windows 10 copy always paste wrong ...
2
votes
0answers
3 views
What can make unmounted volumes SHA512 hashes differ while mounted volumes content SHA512 hashes are identical?
I am trying to configure Raspberry Pi OS to be read-only.
In theory, both / and /boot are read-only. That being said, I am experiencing a strange discrepancy and can’t figure out what is happening.
I ...
0
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0answers
31 views
HMAC SHA1 value VBA
I must, with Excel file, hash a data list (Text String) with secret key (Hex String) with HMAC SHA1 algorithm, do you have some ideas ?
I found this code (see below) but the secret key is not in ...
0
votes
1answer
48 views
What kind of encoding is this (sha256 variant)?
I have some config files from the program ELOG where I want to change the password manually, using something like echo -n "newpassword" | sha256sum but the value is not the expected hexa. ...
0
votes
1answer
58 views
Comparing ISO image files in Windows 10 or MacOS
I have a number of CDs and DVDs (some RW and some not). Some of these disks contain simple files (such as .txt, .doc, etc) and others contain Dell system drivers, various Windows OS's and so on. I am ...
0
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0answers
15 views
How to convert an .lst and .txt file into a Rainbow table
I am currently testing out with responder in kali linux and when I got the NTLMv2 hash I tried cracking it using John the Ripper at first. Then I came across Rainbow crack (rcrack) and learnt that you ...
0
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0answers
22 views
Identify the hashing algorithm
I started working on a web scraping project and wanted to generate the URLs to be able to scrape the data. In my company's website, unique URL is by converting Listing ID to hash value of length "...
1
vote
1answer
178 views
Enable checksum on FileZilla server
How can I enable checksum on the FileZilla server? I want to compare files after downloading on my Android device via FluentFTP library.
The following checksum FTP commands are supported by this ...
1
vote
1answer
80 views
Enable MD5 or SHA1 hash functions in IIS
I have an IIS FTP server on my Windows 10. I am using a third party library FluentFTP to download a file.
This library has a function to compare two files. And I am trying to compare my downloaded ...
0
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0answers
25 views
Cant run Benchmark command in hash-cat in windows\ Ubuntu
hashcat benchmark
Hash 'hashcat': Token length exception
No hashes loaded
I am getting this error every time I am doing benchmark.
whether in ubuntu or windows10
I am running hashcat in windows ...
0
votes
1answer
143 views
MD5 Hex to Base64 String
When I generate an MD5 hash with a plain-text (password), I get:
$echo -n "password" | openssl dgst -md5 -binary | openssl enc -base64
X03MO1qnZdYdgyfeuILPmQ==
This works fine if I knew ...
1
vote
1answer
44 views
Git History object hash recalculation
I'm trying to write a git history rewriter that I have completed Pack file Reader and Writer(also IDX file too) already.
now I change a commit content and recalculate the hash of the new object and I ...
0
votes
1answer
51 views
OpenSSL 1.1.1f measure the speed of SHA3 series
In my Ubuntu OpenSSL 1.1.1f 31 Mar 2020 is installed. I can measure the SHA256 speed by
$ openssl speed sha256
Help list the following as message digest commands
Message Digest commands (see the `...
0
votes
1answer
39 views
customize output of command “openssl dgst -hmac”
I want to compute the HMAC of file A.txt and put it into file A_hmac.txt.
I use openss library, now I have:
openssl dgst -hmac "myHmacKey" -out A_hmac.txt A.txt
The output, inside A_hmac....
0
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0answers
15 views
What causes Robocopy to fail copying a file at 33.8%?
I was copying 50 files from my Plex Server to an external hard drive plugged to my Gaming PC via my Local Network and 1 file failed to copy at 33.8 % after a couple of tries Robocopy ignored it at 33....
1
vote
1answer
159 views
Facing trouble in Configuring Tor to hash a new password in windows 10
I have tried and read various articles over the internet about hashing a new password for Tor.
My tor is installed in local disk D
I used the following commands in the command prompt
D:\softwares\tor\...
0
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0answers
66 views
How safe are Google's suggested passwords?
When I create a new account on any site, Google suggests a password under the option "Use suggested password". These passwords seem pretty strong but are hard to remember for a human.
It ...
1
vote
1answer
151 views
Encrypted RSA Private KEY - What is this?
I'm new on cryptography and I have so many trouble to understand a lot of things.
On my screen, I use Openssl to generate RSA private key and I use DES3 to encrypt this private key.
Then I type my ...
0
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0answers
20 views
OS image unaltered? SHA512 Checksum [duplicate]
looking for some professional guidance here. I am unable to get an IOS image from the original source but the file I did get matches the SHA512 and MD5 checksums from the verified source. Is it safe ...
0
votes
1answer
186 views
Calculate KDF (just like a hash digest) such as PBKDF2 on command line? using openssl or otherwise
OpenSSL can be used to calculate a hash of a file or given input from the shell, like this:
echo -n "abc" | openssl dgst -sha256
or
openssl dgst -sha256 myfile.txt
Can I also calculate a KDF ...
0
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0answers
24 views
How to compare Windows Passwords?
i am searching for a way to compare the Passwords of the VMs i am hosting.
I thought it would be a good idea to get the SAM and the SYSTEM file and extract the Hashes.
Then Compare the Hashes to the ...
1
vote
0answers
22 views
What is the hash algorithm used by Google's mod_pagespeed? [closed]
Google's mod_pagespeed for Apache server produces the following url structure by appending an hash string:
...pagespeed.jc.bFZBaW2xkN.js
What is the hash algorithm used in this process?
1
vote
1answer
28 views
How to use b2sum in keyed mode?
Considering using Blake2 (perhaps b2sum) in conjunction to openssl dgst -sha512 -hmac $key but I don’t see an option to enable keyed mode.
0
votes
0answers
344 views
How can I read the contents of a crd file as plain text (i.e., recover my passwords)?
I lost all my passwords due to a dumb mistake I did yesterday. These passwords are really important. My computer has them saved under Windows credentials. However, I can't view passwords stored under ...
0
votes
1answer
190 views
Why do .sha256 hash files include asterisk before and after filenames?
I've seen .sha256 files for software such as:
this_is_a_fake_sha256_hash_of_64_characters file_name.exe
Or:
this_is_a_fake_sha256_hash_of_64_characters *file_name.exe
Or:
...
2
votes
1answer
1k views
Is the “.sha256” file format formally defined somewhere? How should it be parsed?
I see a bunch of FOSS projects which have ".sha256" files. They look something like this:
dsdfdfdsffdfsdfdsfdsfdsfdsfdsfds23r2ewrefdefdsfdsgfdsgffgfkgdfgg *meow.exe
...
4
votes
2answers
2k views
How do I crack a double encrypted Hash
I created a hash which is encrypted like this: $What_i_made=BCrypt(MD5(Plain Text Password)) and I wonder if it can be cracked. Currently, I thought of two ways:
Brute force $What_i_made to get the ...
1
vote
2answers
126 views
Looking for latest Blake2 b2sum.exe for Windows
I downloaded the b2sum file from blake2.net but it's from 2013 and doesn't seem to support the "compare" -c option. Several online references show several options which I cannot access with the ...
0
votes
1answer
619 views
Microsoft File Checksum Integrity Verifier (fciv.exe) not working/error
I'm attempting to hash every file on my C:\ drive with
fciv.exe c:\ -r -md5 -xml hashes.xml
The xml file does not initially exist, but after the command is entered, the xml file is created. The ...
0
votes
1answer
341 views
What is the OpenSSL equivalent of this given C# hashing code?
I've got C# server code which verifies a hash using the following logic. I have no control over the server code and cannot change it.
string key = "xZBn34L4myg[...]cebvr7A==";
var hmacSha256 = new ...
0
votes
1answer
1k views
7-Zip. h (Hash) command. Calculate hash values for files. When you use it?
I use 7-Zip. I work in Windows 10 Home 64-bit. I use command line. From 7-Zip help I know there is h (Hash) command. Calculate hash values for files.
Syntax
h [-scrc{Method}] [files]
Supported ...
1
vote
1answer
90 views
change line starting with# with sed -i
I want to uncomment a line in /etc/apt/sources.list to enable canonical repo but it seems it has a problem with # character I tried -e but I can't figure out if I'm doing it correctly
sed -i ' s/# ...
0
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0answers
41 views
How does a “passwd” and “adduser” command actually work on a LINUX OS?
(From a novice's point of view)
The other day I was thinking about how a typical "passwd" command works in a LINUX OS. For example, when we type in "passwd", a prompt appears letting us type in our ...
2
votes
1answer
1k views
Do Outlook Emails or Email Threads have a unique identifier hash that can be used within the search syntax?
I just had a massive issue with a younger IT guy who was trying to communicate to me how to find an email thread he was referring to. It was a waste of time.
Now I understand that email should be ...
0
votes
2answers
578 views
Can MD5 Hash be reversible or crack?
I try this link (https://md5.gromweb.com/) to hash some keys (lets say key A) and reverse it back which MD5 not suppose to be reversible right? Somehow, this website can do it easily.
So, I found it ...
0
votes
0answers
18 views
How can I exchange a hash password for a newer one at AIX and Linux using shell script?
We have AIX and Linux machines that we can use puppet to change password automatically.
But in some cases we need to do this manually. But I decide to write a script and change the old hash with a ...
0
votes
1answer
169 views
How should I structure my SHA-256 verification hash file(s) to make it the easiest for others?
I have been developing a major (to me) PHP library/framework kind of thing which I hope will power important applications of mine and maybe others in the future.
I have so far not implemented any ...
1
vote
0answers
672 views
OpenSSL Digital Signature with ES256
I am trying to reproduce a valid signature for the JSON Web Token.
I make the privat key with: openssl ecparam -genkey -name prime256v1 -noout -out private.pem
also convert this from Pem to P8 with: ...
2
votes
2answers
1k 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
2k 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
268 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
100 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
1answer
570 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
2k 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
50 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
2k 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
217 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 ...
