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1
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1answer
40 views

Check all debian binaries against the checksum of the original

I would like to check all binaries on my server against dpkg -e <path_to_deb_package> <destination> (for example rkhunter could do this check against the originals when doing ...
0
votes
0answers
13 views

Have snort report MD5s of exfiltrated files and report if a specific file is exfiltrated

I would like to create a set of snort rules to report if a specific file is exfiltrated from my organization. I'd also like to have snort report the MD5 of every file that is sent over my network ...
18
votes
1answer
1k views

Why are md5 passwords hashed differently?

I've been wondering for a while, why does running "echo 'helloworld' | openssl passwd -1 -stdin" yield different results every time?If I put any of the hashes in my /etc/shadow I can use them as my ...
-1
votes
1answer
99 views

MD5 for Git's git-credential-osxkeychain executable? [closed]

This question copied over from Super-User, where it was apparently unwelcome. Anyway, asked and answered: I'm setting up a GitHub account and have downloaded Git's git-credential-osxkeychain ...
1
vote
2answers
1k views

vsftpd will not accept passwords encrypted with MD5

I am setting up an server with vsftpd to let virtual users access their space. Now it is fully working but only with CRYPT passwords. sudo htpasswd -c /etc/vsftpd/ftpd.passwd phpmyadmin Will not ...
0
votes
2answers
695 views

Moving a 13 gig file over sFTP (md5sum fails)

Each time I download a big file over sftp, the md5sum on the source machine doesn't match the md5sum I do on the destination machine. I have a 13gig file on an Ubuntu 12.04 machine with ...
2
votes
1answer
170 views

debsum and actual md5

I have discovered that debsum maybe does not work as i thought. I ran debsum -as And actually i did not see sshd binary in that list. However md5 of the /usr/sbin/sshd file and the numbers given ...
0
votes
2answers
839 views

Change password hashing algorithm for SuSE users from blowfish to MD5

I have a network of roughly 1000 SuSE machines with 20-200 users on each. The password hashing algorithm used is the default i.e. blowfish. In order to check, whether a user has used a dictionary word ...
3
votes
2answers
1k views

changing shadow hash algorithm to bcrypt: how to rehash

I want to change my SHA512 shadow file to use bcrypt as shown in this question/answer: Enable blowfish-based hash support for crypt The problem is that i run into a chicken and egg problem, because ...
1
vote
1answer
302 views

How to generate a Linux Apache password file on a PC running Windows 7?

My development machine is Windows. I use the htpasswd program that is part of the Windows XAMPP package, version 1.7.7, to generate a Windows Apache password file. C:\xampp\apache\bin\htpasswd.exe ...
4
votes
1answer
626 views

LDAP passwords encryption (userPassword attribute)

I'm trying to import passwords from an LDAP to a MySQL database. When I look at the userPassword attribute for the known password test I get this: userPassword:: ...
5
votes
5answers
611 views

md5sum of large files gives different results sometimes

I have an AMD quad core, 8 gb RAM, 1 SSD EXT2 (2 months old), 2 HDD EXT4, approximately 1 year old. I'm using Ubuntu 10.04 x86-64 and when I compute the md5sum of large files (9 GB) sometimes I get ...
18
votes
11answers
31k views

How to create an SHA-512 hashed password for shadow?

The previous SF questions I've seen have lead to answers that produce MD5 hashed password. Does anyone have a suggestion on to produce an SHA-512 hashed password? I'd prefer a one liner instead of a ...
0
votes
2answers
179 views

Prompt server for Etag or MD5

We are a price comparison portal and crawl certain websites on a regular basis. I am looking for a method to save bandwidth by avoiding downloading the same page over and over again if the content did ...
0
votes
2answers
2k views

How can I ensure non-corrupt file transfer in linux?

I have script scheduled with cron that transfers a file around to other machines using scp filename user@host:~ and today have noticed that sometimes the md5 of the files don't match. Upon closer ...
18
votes
8answers
12k views

Calculate MD5 checksum of a directory

I'm looking for a quick way to compare directory contents. Is it possible to do an md5sum (or equivalent checksum) of an entire directory? Using Ubuntu Linux
2
votes
2answers
518 views

Software to brute force MD5 password on multi-core machine? [closed]

First off, I'm well aware that this is a controversial topic. I can give my word as a sysadmin that I have the best of intentions (depending on how you view the next paragraph) but I understand that ...
2
votes
3answers
2k views

Can I force the passwd command to use MD5 hash (and not crypt)?

How can I force the passwd command to use MD5 hash and not to use crypt? I need to get the passwd command to talk to the ldap server (which it does) and use MD5 when I change passwords for the users.
0
votes
1answer
316 views

Creating an MD5 file for a directory tree for only a given extension

I would like to create an MD5 file of a directory tree, containing only the bare names of the files. md5deep exactly does that, but it cannot filter for files when in recursive mode. md5deep -rb . ...
2
votes
5answers
1k views

Is there any value in checking MD5 of files after they have been unzipped?

A project I am working on currently requires that the user runs an MD5 hash checking tool on the entire project, after it has been unzipped. They do not currently request that the ZIP itself is ...
1
vote
1answer
282 views

md5sum returns different results for a folder, but why?

/tmp/file.txt tar cvf 1.tar tmp md5sum 1.tar c32dc6f04ff02b371129dd4aa923cc12 rm 1.tar cd tmp touch test.txt rm test.txt cd .. tar cvf 1.tar tmp md5sum 1.tar f9204f04ff02b300130ee4aa234aa78 i ...
2
votes
4answers
3k views

Is it secure to encrypt my POST variables to md5 before sending them?

I have a simple login form where a user enters their username and password. When php receives the vars via POST, it encrypts the password to md5, then compares it with the database records. My ...
3
votes
1answer
550 views

Securing NTP: which method to use?

Can someone good at NTP configuration please share which method is the best/easiest to implement a secure, tamper-proof version of NTP? Here are some difficulties... I don't have the luxury of ...
0
votes
2answers
305 views

HOw to know if files md5 chnaged by virus or system itself centos

I installed OSSSEC to very files have chnaged or not. But sometimes it is giving me false waring and integrity checksums like following files have chnaged. How can i makesure that files are chnaged ...
0
votes
3answers
732 views

Puppet - MD5 sum of string

I would like to name a file based on a MD5 sum of certain characters. Such as $environment and $URL. So from a high-level what I'd want is something like md5("http://$environment/$url"). Does anyone ...
3
votes
2answers
2k views

Can “tar” backup incrementally?

I have my home folder with a few GB. Is it possible to run tar on it, create a home.tar.gz, and then for changed files, it creates home1.tar.gz only with modified files from previous tar (thus being ...
2
votes
2answers
968 views

Different md5sums for same tar contents

I run a test creating two tars from the same dir (its files remained unchanged), and I found that their md5sums were different. I assume there's some timestamp being included in the tar's header, but ...
0
votes
2answers
480 views

Ubuntu - Is there any programme for MD5 rainbowtables on Ubuntu?

I've been reading about Rainbow Tables recently. There's a few webpages that will do a reverse look up for an MD5 hash. Is there any programme on Ubuntu that lets me do this? Is there something in ...