RFR(S) 8205398: AES-CBC decryption algorithm using AVX512 instructions

[Kamath, Smita]

Hi Vladimir,


As per "Intel Architecture Instruction Set Extensions and Future Features Programming Reference"  manual [1], vector aes decrypt (vaesdec and vaesdeclast) instructions will be supported in future Intel ISA. I have updated AES-CBC decryption algorithm to take advantage of these instructions. Shravya(cc'ed) and I are co-contributors. Shay Gueron and Regev Shemy (regev.shemy at intel.com<mailto:regev.shemy at intel.com>) are the authors of the algorithm.

I have tested  the algorithm with Intel SDE [2] to confirm encoding and semantics are correctly implemented.



Please take a look and let me know if you have any questions or comments.
http://cr.openjdk.java.net/~vdeshpande/AES_CBC_AVX512/webrev.00/



[1] https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf



[2] https://software.intel.com/en-us/articles/intel-software-development-emulator


[3] https://bugs.openjdk.java.net/browse/JDK-8205398



Thanks,

Smita

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