Collaborate Disseminate
Hashes are used widely in cybersecurity, but what are they and what can they reliably tell us about malware? If you’ve ever wondered, find out here!
The post What is a Hash? (And How Does It Work?) appeared first on Security Boulevard.
Continue reading What is a Hash? (And How Does It Work?)
I’ve read about why MD5, SHA1, and many other hashing functions are insecure, by a lot, but I’m thinking of doing a different approach.
It won’t increase security, I’m aware of that, but I believe it can make cracking the ha… Continue reading Disguising the type of hash used
Recently we outsourced some work for a website. While reviewing this code I came across the password hash function.
I am in no way a security expert besides some basic knowledge (hence outsourcing this), Nontheless it raised… Continue reading How secure is this combined sha1/md5 hash
I am currently working on a software challenge where you have to unlock several functions of a piece of software. The software is written in Java. One of them is the update mechanism of the firmware. What it does is to downlo… Continue reading Attacking a update mechanism using MD5 and RSA
Generally speaking, MD5 is considered as broken for secure usage these days, but I came across a signature design using MD5 many times recently in my company. The detail shows as following:
T = text, which is directly viewab… Continue reading How secure is using MD5 for signature
I’ve been given a homework task to crack a particularly difficult password on a Unix system.
I have found users and hashes in the etc/shadow file and cracked all but this one:
$1$TyPfW4pp$Mp7O4bzX8bmWsGGV8ZrVY0
I’ve been t… Continue reading Advice to help crack MD5crypt hash
Webroot marks valid file as [Trojan.Dropper.Gen]
We develop and deploy a Windows Desktop Software Application, but this gets repeatedly marked as [Trojan.Dropper.Gen]
The antivirus software webroot repeatedly marks our appl… Continue reading Webroot marks valid file as [Trojan.Dropper.Gen]
1) If one iteration of MD5 takes x seconds, is it safe to assume that n iterations of MD5 takes n * x seconds?
2) Will salted and unsalted versions of md5 hash algorithms take approximately the same amount of time to compute… Continue reading How long does it take to compute hashes using the MD5 hash algorithm?
Many sites these days offer MD5 and SHA256 hashes to check the integrity of downloaded files or archives.
I wonder how much safer is the use of the SHA256 hashes for integrity checks?
Note: Consider the file content as random input (no a… Continue reading How likely is a collision using MD5 compared to SHA256 (for checking file integrity)?
Last week, the Scientific Working Group on Digital Evidence published a draft document — "SWGDE Position on the Use of MD5 and SHA1 Hash Algorithms in Digital and Multimedia Forensics" — where it accepts the use of MD5 and SHA-1 in digital forensics applications: While SWGDE promotes the adoption of SHA2 and SHA3 by vendors and practitioners, the MD5 and… Continue reading MD5 and SHA-1 Still Used in 2018