Collaborate Disseminate
I have turned off my TrueNAS PC completely with No Reboot specified. So it is completely off. It has been off for days. Suddenly, today, it started turning itself on. I reach over and hold the power button for 4 seconds before it can boot…. Continue reading Why my PC keeps booting on its own? [closed]
I want to create a function that returns a random number in a given range, what is a secure way of doing that?
Continue reading What is a secure way to create a random number in Typescript? [duplicate]
The ID library Nano ID claims that modulo based encoding (e.g. Base64) would lead to uneven distribution in the output:
Uniformity. random % alphabet is a popular mistake to make when coding an ID generator. The distribution will not be e… Continue reading Is encoding random with module insecure? [closed]
A coin flip is considered by many to be the perfect 50/50 random event, even though — being an event subject to Newtonian physics — the results are in fact …read more Continue reading That Coin Toss Isn’t Actually 50/50
RFC4122bis specifies UUID v7, a version which contains 74 bits of randomness.
Assuming I use a CSPRNG to generate the random bits: Are these UUIDs considered to be unguessable and are enough to prevent attacks such as IDOR?
Continue reading Can UUID v7 be treated as a unguessable, opaque identifier?
I have a personal id "U1KFhYtMqZhCYya6sy31PVLM8DlM5HLCkwy3", I have checked some hash functions but cannot make sure how this generated? Is this just random string generated with [a-zA-z0-9]?
Continue reading Any idea on how this 36 character long string generated? [duplicate]
I have an Ideapad Gaming laptop by Lenovo, with an Intel(R) Core(TM) i5-10300H processor. On this laptop I have Windows 10 installed. To generate random numbers, I use the CryptGenRandom function. However, I found out that this function ha… Continue reading Which algorithm does CryptGenRandom use on my laptop?
I need to randomly pick 10 numbers from 1 to 2000. It is very important that this rng cannot be predicted/hacked in any way. Would this be a safe/proper way to do it:
int randomInt;
SecureRandom random = new SecureRandom();
for (int i = 1;… Continue reading SecureRandom safety?
Math — and some clever simulations — have revealed how many shuffles are required to randomize a deck of 52 cards, but there’s a bit more to it than that. …read more Continue reading Math Reveals How Many Shuffles Randomizes a Deck
I’m the maintainer of pypdf, a Python library for reading/manipulating PDF documents. I recently discovered that pypdf used random instead of secrets for …
Generating the initialization vector (IV) in AES
As part of generating the U-Val… Continue reading Is using weak random numbers for the initialization vector of AES just a theoretical issue?