entropy   1910

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How bad can it git? Characterizing secret leakage in public GitHub repositories | the morning paper
How bad can it git? Characterizing secret leakage in public GitHub repositories Meli et al., NDSS'19 On the one hand you might say there’s no new news here. We know that developers shouldn’t commit secrets, and we know that secrets leaked to GitHub can be discovered and exploited very quickly. On the other hand, this…
github  security  secret  detection  entropy 
16 days ago by fmjrey
Saarbrücken research team uses artificial muscles to develop an air conditioner for the future | Universität des Saarlandes
Using nitinol shape memory alloys as the thermal medium/matrix in a thermal wheel rotary air heat exchanger, where the wheel itself is the HVAC system!
rotary  heat  exchanger  thermal  wheel  air  entropy  nitinol  shape  memory  alloy  metal  conditioner  heater  HVAC  mechanical  materials  science  research  technology  cooling  heating 
6 weeks ago by asteroza
Entropy Explained, With Sheep
An explorable blog post about entropy, with sheep.
physics  science  entropy  learning  education 
9 weeks ago by garrettc
A better description of entropy
Uses a Stirling Engine
He likes the "spreading out of energy"
thermo  entropy  310 
10 weeks ago by paulmr
How to Diagnose a Linux Entropy Issue on WebLogic Server Instances (Doc ID 1574979.1)
Choose one of the following approaches.

1. Feed the /dev/random device with additional I/O operations or using a random number generator tool (like rngd).

2. Instruct WebLogic server to use a non-blocking entropy device.

2.1 Long term solution

a) WebLogic Server Scope

i. Edit the Weblogic startup script ($DOMAIN_HOME/bin/startWebLogic.sh)
ii. Add the following to the JAVA_OPTIONS variable: -Djava.security.egd=file:/dev/./urandom
iii. Save the file.
iv. Set the domain environment. ($DOMAIN_HOME/bin/setDomainEnv.sh)
v. Start WebLogic instances.

b) JDK Scope

i. Edit the Java Security Properties file ($JAVA_HOME/jre/lib/security/java.security)
ii. The securerandom.source property specifies the source of seed data for secure random. If that property points to /dev/random, set it as one of the options listed below.
securerandom.source=file:/dev/./urandom

securerandom.source=file:/dev/urandom

iii. Save changes and start the WebLogic Server instances.

2.2 Temporary solution (usually applied for testing purposes)

i. Override the JAVA_OPTIONS environment variable before starting WebLogic Server via shell scripts.
$ export JAVA_OPTIONS="${JAVA_OPTIONS} -Djava.security.egd=file:/dev/./urandom"

ii. Start WebLogic instances.
oracle  linux  weblogic  manage  start  timeout  entropy 
11 weeks ago by iteruel

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