Home >Java >javaTutorial >How Can I Improve the Performance of Java's SecureRandom?

How Can I Improve the Performance of Java's SecureRandom?

DDD
DDDOriginal
2024-12-23 09:26:15836browse

How Can I Improve the Performance of Java's SecureRandom?

Improving SecureRandom Performance in Java

When seeking cryptographically robust random numbers in Java, SecureRandom is the go-to solution. However, SecureRandom's performance can be sluggish, particularly when it relies on Linux's /dev/random, which might stall while gathering sufficient entropy.

To circumvent this performance penalty, consider adjusting the SecureRandom setup to employ the faster but slightly less secure /dev/urandom. This can be achieved by employing the following Java Virtual Machine (JVM) option:

-Djava.security.egd=file:/dev/urandom

However, this solution is not compatible with Java 5 and subsequent versions due to a known Java bug (6202721). To address this issue, use the following alternative JVM option:

-Djava.security.egd=file:/dev/./urandom

Note the inclusion of the additional "/./" path segment.

The above is the detailed content of How Can I Improve the Performance of Java's SecureRandom?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn