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Avoid cache-timing side-channels #7

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danielburger1337 merged 1 commit into danielburger1337:main from paragonie:timing-leaks

Sep 8, 2024

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paragonie-security commented Sep 7, 2024 •

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chr() and ord() are not designed to be constant-time.

Integer multiplication is sometimes variable-time.

Avoiding integer division (and modulo operators) also ensures the runtime is independent of the contents of the inputs.


          Avoid cache-timing side-channels

039c751

chr() and ord() are not designed to be constant-time: https://paragonie.com/blog/2017/02/cryptographically-secure-php-development#chr

Integer multiplication is sometimes variable-time: https://paragonie.com/blog/2017/02/cryptographically-secure-php-development#ctmul

danielburger1337 merged commit 06a4403 into danielburger1337:main

5 of 6 checks passed

paragonie-security deleted the timing-leaks branch

September 8, 2024 17:48

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