[jdk11u-dev] RFR: 8292158: AES-CTR cipher state corruption with AVX-512

[Vladimir Kozlov]

On Sat, 8 Oct 2022 06:55:36 GMT, Smita Kamath <svkamath at openjdk.org> wrote:

> Hi,
> 
> This is a backport of JDK-8292158: AES-CTR cipher state corruption with AVX-512. This backport fixes a bug where cipher can become corrupted when encrypting/decrypting byte arrays with a size less than 16.
> The fix is in MacroAssembler::aesctr_encrypt method.
> 
> Patch does not apply cleanly to 11u as the method has moved from src/hotspot/cpu/x86/macroAssembler_x86_aes.cpp  to a new file src/hotspot/cpu/x86/stubGenerator_x86_64_aes.cpp. Also, the included regression test had to be modified. 
> 
> Could you kindly review the patch? 
> 
> Thanks,
> Smita

This backport looks good.

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.org/jdk11u-dev/pull/1408