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Questions tagged [md5]

MD5 (Message-Digest algorithm 5) is a 128-bits unidirecional hash algorithm.

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0answers
17 views

Way to get an MD5 output in Windows like this?

I am looking for a way to do the following Mac/Linux command on Windows to get the same output. Does anyone know of a way to do this? cd ; find . -type f -print0 | xargs -0 md5 -r > ../my_checksums....
2
votes
1answer
26 views

Is two different type of format of files having same data can have same checksum value?

I am not talking from the Point of View where exploitation happens. Assuming MD5 does not has any problem. If I have 2 same format of files having same content then both checksum will be same. But, ...
1
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0answers
47 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 ...
0
votes
2answers
66 views

Given an MD5 checksum and a random file. Is it feasible to add a suffix to match the checksum?

I often hear that MD5 is insecure. But I am not sure how it can be manipulated. I don't want to be the guy who just repeat "MD5 is insecure" without knowing some details. Say, I have an 128-bits MD5 ...
4
votes
3answers
6k 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 ...
1
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2answers
479 views

Powershell how to get a list of running processes and run them through the MD5 algorithm [closed]

Hi i need to be able to get a list of every process running on my windows 10 and run them through the MD5 algorithm. Is there a way to do this automatically in powershell? Any help is very much ...
1
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1answer
3k views

OpenVPN upgrade existing certificates from MD5

I noticed that when I connect from my phone using OpenVPN I get a message telling me that in April 2018 support for MD5 will be dropped. Can someone please indicate how to update my existing ...
0
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1answer
136 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 ...
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0answers
378 views

Is there solution for Windows Server to use MD5 certificate NTP source validation/authentication?

Is there a built-in or third party solution for Windows Server to use MD5 certificate NTP source validation/authentication? If it is built-in, what version of Windows Server and what is the feature ...
0
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1answer
1k 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 (...
1
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1answer
1k views

How reliable are SHA1 sum and MD5 sums on very large files?

I constantly transfer disk images and virtual machine images (usually 800GB to nearly 1 TB per file) to a cloud server via rclone using SSH, and I wonder how reliable are sha1sum and md5sum when it ...
0
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2answers
1k views

Windows Checksum Utility [closed]

I would like to install WinMD5Free.exe to run checksums - anyone know if it is legitimate? Many other sites offer it (CNet etc. so it seems ok). I have to check numerous downloads and want to verify ...
7
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6answers
4k 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 ...
1
vote
1answer
358 views

Using md5sum and date to update files with cp

I use cp -up --backup=t to copy files from my computer to the cloud and reverse, but sometimes the date changes for a few minutes (or I guess even seconds, as I see the same file date stamp) as I ...
1
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1answer
2k views

Missing md5.h header as I install cmusfm scrobbler for cmus on OS X

I'm trying to install cmusfm to be able to scrobble tracks in cmus. I am on OS X 11 and when I run the ../configure --enable-libnotify command from the installation guide for cmusfm I get the ...
-1
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1answer
2k views

Check ISO for errors without MD5 and how to find MD5 for online file

I was downloading a Windows AIO ISO and the page where I downloaded it from i.e., http://getintopc.com/softwares/operating-systems/windows-7-8-1-10-aio-70in1-iso-free-download/ didn't provide the MD5. ...
0
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1answer
115 views

Reproduce the /etc/shadow passwords

I am trying to manually reproduce a /etc/shadow password hash from the plaintext password and the salt. Let's take as an example the following shadow entry: user:$1$/M$5GK8.h6z8o0WQLEOWC.YI/:16764:0:...
0
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1answer
66 views

Hashutils to recurse the whole drive

Following this post another super user question, I downloaded hashutils. Works great with with the -r flag to recurse a folder. However, I am unable to recurse a whole drive. Trying this command, the ...
0
votes
1answer
536 views

md5sum messing up with filenames with spaces

I'm trying to generate a md5 for each file that has no user.comment extended attribute and then parse that md5 in the file's extended attribute. My script works fine but only for filenames that have ...
5
votes
3answers
6k views

apt-cyg install return md5sum error

Since the last time I reinstall windows, and then cygwin, apt-cyg stops working. It keeps telling me "md5sum: standard input: no properly formatted MD5 checksum lines found". What could cause the ...
3
votes
3answers
5k views

Recursive command-line md5 generator and verifier

I want to write a batch script that has the ability to generate and verify md5 hashes of an entire directory tree. Is there any program like this for windows? I can find many md5 programs, but they ...
0
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1answer
42 views

Looking for new way to create password [closed]

I tend to use same 2-3 passwords for all sites and want to change that but want to make sure I standardize my new approach as well. Looking at password hashing and I know very little other than what ...
1
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0answers
415 views

How do I check integrity of a file from DreamSpark?

I have a very unstable connection and it cut off multiple times while downloading Windows 8.1 using Microsoft's SDM, so I'm kind of concerned to how I can check to see if the file is still intact once ...
0
votes
1answer
81 views

What Is Actually MD5?

Every time i want to download some softwares , it always told about the MD5 below the description or below the download file for the example : https://anonymous-proxy-servers.net/en/jondo.html it has ...
0
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1answer
659 views

SuiteCloud IDE on Eclipse (Both latest versions) - Hash md5 errors

I have just downloaded the latest version of Eclipse, and I'm trying to install SuiteCloud IDE on it. I have tried both versions, however both are giving me an error when installing. The error is ...
0
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1answer
89 views

Kernel-level pass-through method to change file hashes

I'm searching for any kernel-level mechanism that is pass-through and will change file hashes by either encrypting file contents or appending data. The most obvious solution is encryption, but I can't ...
2
votes
2answers
5k views

How to download an image with wget and save it with the md5 hash as name?

How can I make a download an image, md5 hash the image, and save that image with the md5 hash as name to a directory using wget? # An example of the image link... http://31.media.tumblr.com/...
3
votes
3answers
3k views

Does an MD5 match between a torrent file and an original file from a provider mean the torrent file is safe?

I wanted to download a certain distro of Linux. However it is only using bittorent for download. I'm not to keen on bittorent. If I do use it, however, if the MD5 I download matches the MD5 of the ...
-1
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2answers
133 views

MD5 wasn't changed?

I have 3 rar files (all with the same md5), and I use this code to change Md5: @echo off setlocal enabledelayedexpansion set /A Counter=0 FOR %%1 in (*.rar) do ( set /A Counter= !Counter! +...
4
votes
1answer
7k views

Checksums for Win7 installation files?

OK many thanks to the guys on Where can I download Windows 7 (legally from Microsoft)? who provided links to d/l the WIn7 .ISO images. Now where can we find a similar listing of the md5 hashes for ...
4
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1answer
1k views

Why does tar with -z option create archive with different hash everytime

Can you tell me why tar czf archive.tar dir creates archive with different hash everytime (I check with 'md5sum') Without compression parameter -z or with parameter -j instead all works fine. Thanks
0
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1answer
2k views

Rename files by md5 checksum [closed]

What program can I use to rename files with their calculated md5 checksums? GUI or CLI Programs for Linux or Windows or scripts for DOS or the Linux terminal.
-1
votes
1answer
1k views

How to extract MD5 data from a CSV file

I have been sent a csv file that contains a list of emails that i'm told has MD5 encryption on it. I want to be able to extract the email addresses from the file. If i double-click it opens in Excel ...
4
votes
1answer
963 views

Any examples of duplicate MD5 Hashes?

I was wondering, as it is theoretically possible to have duplicate MD5 hashes, are there any known examples of this, or is it all just theoretical?
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2answers
106 views

Is it possible to generate a file from a md5sum (or sha1 or such)?

Is it possible to recreate a file if you have the files md5sum? Or is it only possible through brute-force? Is it any differences between the different algorithms?
1
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1answer
75 views

How does applications read my hashed passwords?

mpdas (last.fm scrobbler for mpd) forces one to write password hashed in md5. But if it's hashed, how does it login to last.fm? Isn't hash function one-way only?
25
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7answers
21k views

How can I verify that a 1TB file transferred correctly?

I frequently transfer VM images from hypervisors to an archive server for long term storage. I transfer using netcat since it is faster than scp, rsync, ect.. hypervisor$ cat foo.box | nc <...
0
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0answers
56 views

Deleting sentences in database file

I'm writing a MD5 based antivirus, and my friend send to me a document with thousands of samples and their MD5. All is fine, but I have to delete all sentences what contain "File does not exists:" ...
2
votes
1answer
8k views

Can Robocopy ensure file integrity?

I am trying to copy a large file, around 10G size, over Internet using Robocopy, but I am a bit concerned about the file integrity. So can I just trust Robocopy to ensure file integrity or I need to ...
1
vote
0answers
35 views

Very strange harddisc behaviour

Running Windows 7 64bit. Harddisc is installed internally and connected via SATA: Videofile xyz.mp4 can be opened and played without any problems. If I remove the disc and put it in an external ...
1
vote
3answers
1k views

Finding a file by md5sum

Given the md5sum of a file, I want to know if anywhere else in the directory tree is another file with the same md5sum (but maybe under a different name). How can I do that in bash? P.S.: To ...
16
votes
3answers
4k views

Files with same content but with different md5sums when gzip'd?

I don't know why this is happening, but I upload some files to Amazon S3 then delete the sent files checking their md5sum both in Amazon and locally. But recently I found this issue about the same ...
1
vote
1answer
111 views

How interact in for with bash?

I know this must be sound a weird question, but for me, that always developed in C, C++ and Java (and now in bash) seems more weird tough. I'm trying to check if md5 and filename from two list (one ...
0
votes
1answer
66 views

clear md5 cache on Mac

I noticed that calculating the md5 sums, for large files, take much less time the second time you run the md5 command on them. Is there any way to clear the cache? I'm actually writing a parallel ...
1
vote
1answer
4k views

how to detect file corruption?

Sometimes, my files become corrupted without me noticing - this happens to my photos a lot. This doesn't bother me when I notice it because I have backups. It's growing to be a pain to manually go ...
0
votes
1answer
923 views

md5pass or sha1pass on mac os

I'm looking for a hash tool on MacOS (shell), hope it works like md5pass on Ubuntu. Calculate case sensitive hash code. Calculate salted hash code. md5 is good, any other algorithm is ok. I ...
0
votes
2answers
179 views

What's the purpose of brute forcing MD5 hashes? [closed]

Great article about hacking passwords on Ars Technica: http://arstechnica.com/security/2013/03/how-i-became-a-password-cracker/ But what I don't understand is why? From a black hat's standpoint, what'...
1
vote
1answer
2k views

EFI partition malware?

I have a 2011 Macbook Pro, running 10.8.2 and was worried that the laptop may have been tampered with while left unattended for a few days while abroad in Asia. I have mounted my EFI partition using: ...
1
vote
2answers
3k views

What's the percentage of having two files with the same byte size length giving the same md5 hash? [closed]

I'm developing an app that will store a lot of files, and in case of images, it will resize them and save the different thumbnails we need, so when a user uploads an image, it will save more 8 files (...
1
vote
1answer
703 views

MD5 (OSX) and Output

when using MD5 i get a text file output of the full path to the file and file name and then space and the hash. wondering if there's a way omit the path and just have filename = hash using terminal ...