[APK] Seeder entropy generator to provide significant lag reduction (opens in new tab)

(forum.xda-developers.com)

4 pointswisesage500113y ago3 comments

3 comments

I thought it was pretty silly how he went through all this trouble to essentially do the same thing as symlinking /dev/random and /dev/urandom.

DanBC13y ago

Adding /dev/urandom seems like a suboptimal solution. Crypto is hard, and very clever people get bitten by flaws in things like randomness and seeding prngs.

supergauntlet13y ago

I think the problem they were trying to fix/remedy was that /dev/random was getting called for ALL random functions in the JVM. So every time an android app called for a random number, it would go to /dev/random.

Nobody would suggest using /dev/urandom for cryptography, but it's sufficient for a random number call, especially because /dev/random is blocking.

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3 comments

supergauntlet13y ago

I thought it was pretty silly how he went through all this trouble to essentially do the same thing as symlinking /dev/random and /dev/urandom.

DanBC13y ago

Adding /dev/urandom seems like a suboptimal solution. Crypto is hard, and very clever people get bitten by flaws in things like randomness and seeding prngs.

supergauntlet13y ago

Nobody would suggest using /dev/urandom for cryptography, but it's sufficient for a random number call, especially because /dev/random is blocking.

j / k navigate · click thread line to collapse