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Questions tagged [hash]

114 questions
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What are the side-effects of disabling the old Lan Manager hash?

All of the computers in our domain are running Windows XP/Server 2003 and above (with one exception, a Win2Ksp4 server, which is not a domain controller). I intend to disable the LM hashes via group policy as indicated in KB299656, and want to…
Bigbio2002
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Hash function in shell that could be used for an ssh port from (say) hwaddr of eth0

I have a growing number of remote machines that ssh home and setup a connection to allow subsequent access via tunnel so I can get into them for maintenance. Currently, I must manually configure these machines with a unique forward ssh port prior to…
Aitch
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different hash length in /etc/shadow

Here is the output of /etc/shadow for two different users stored on the…
XXL
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How do I replicate a sha256 hash with salt using OpenSSL command line?

Using PHP's crypt function as follows, I can do a sha256 hash with salt and multiple rounds. php -r "echo crypt('foo','\$5\$rounds=5000\$saltsaltsaltsalt');" produces: $5$rounds=5000$saltsaltsaltsalt$5RbfsOruKYb8v7hGn29A.I91maopNeJ2nIFH.SIEnSC How…
Tim
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In Windows XP, is it possible to disable user credential caching for particular users

I understand that when windows caches user credentials, these can sometimes be used by malicious parties to access other machines once a machine containing cached credentials is compromised, a method known as "pass the hash"[1]. For this reason I…
kdt
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Malformed BASE64 value in vmail_ssl.map.db

I'm using postfix in Ubuntu 20.04.5 . Here's my vmail_ssl.map file, with domain names redacted: mail.domain.org /etc/letsencrypt/live/mail.domain.org/privkey.pem /etc/letsencrypt/live/mail.domain.org/fullchain.pem mail.domain.net…
Valerica
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Windows Server 2012: how to prevent IIS from choosing SHA-1 for connections?

The problem: IIS on Windows 2012 picks SHA-1 algorithm when the client uses SHA-1 certificate. Even though the server-side certificate is SHA-256. So Chrome/Edge don't work. On analogous Windows 2016 setup: IIS uses a proper algorithm and everything…
Mikhail Orlov
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Can't change size of types_hash_max_size

Currently I'm trying to setup a nextcloud server with nginx. Now I've the following in my /etc/nginx/sites-available/nextcloud.conf: server { listen 443 ssl; server_name localhost; (...) types_hash_bucket_size 8192; …
TornaxO7
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Which EC2 Instance to hash a large amount of 25gb files

I have an EBS (elastic block storage) on AWS with large amount of 25GB files (1000). I would like to calculate a SHA256 sum for each file. Which EC2 instance would be the best for such task (cpu optimized? many cores? storage optimized?). Can I…
ECII
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What hash function is used to cache credentials on Windows 10?

I am looking for the hash function used by Windows to cache user passwords locally on a computer. The client machine would run Windows 10. The AD Controller would run Windows Server 2016.
LeWoody
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How to reset Ubiquiti UniFi Controller admin password?

I need to get into a Ubiquiti UniFi Controller system that was setup by one of my predecessors. The admin password has long since been lost and the company now uses a different Wi-Fi system at the other offices, so there's no support contract…
KidACrimson
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multiple sha1 file hashes conversion

Issue Description: I'm trying to comply with our Security Advisories. The advisories contain nearly 1000 MD5 & Sha 256 file hashes. I need to convert them into sha1 and update them in our endpoint security product because our endpoint security…
Faheem Memon
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get SHA256 has of certificate chain of my certificate

I got my server certificate mycert.pem by command: cho -n | openssl s_client -connect | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > mycert.pem. I would like to see the certificate chain hash value. My question…
Mellon
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Linux FTP server which can work with unsalted SHA256 hashes?

Problem Some old WS_FTP server stopped booting at work after a Windows update. The corresponding admin is long gone. The only information I have is : file structure user names unsalted SHA256 hash for each user One of those hashes…
Eric Duminil
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compare 2 directories with different files names and locations of the files

I'm currently having 2 (top level) directories with a lot of sub directories and files. There are a lot of duplicate files between those directories but there is one problem with it, the names of the files and/or directories can be different. I'm…
grezly
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