PKEY CMAC timings

[Dr Paul Dale]

How does it look for large input?  As in many kilobytes or megabytes?


Pauli
-- 
Dr Paul Dale | Distinguished Architect | Cryptographic Foundations 
Phone +61 7 3031 7217
Oracle Australia




> On 18 Jun 2020, at 1:18 pm, Hal Murray <hmurray at megapathdsl.net> wrote:
> 
> Intel(R) Core(TM) i5-3570 CPU @ 3.40GHz
> 
> After Kurt's improvement, with our usage patterns (48 bytes), PKEY mode on 
> 3.0.0 takes 2x as many cycles as 1.1.1
> 
> That factor probably depends on how good the hardware AES support is in your 
> CPU.  I think it's significantly faster in newer CPU chips.
> 
> 1.1.1g:
>     AES-128  16 48 16    434   0.434  475ac1c053379e7dbd4ce80b87d2178e
>     AES-192  24 48 16    442   0.442  c906422bfe0963de6df50e022b4aa7d4
>     AES-256  32 48 16    453   0.453  991f4017858de97515260dd9ae440b06
> 
> 1.1.1g improved:
>     AES-128  16 48 16    230   0.230  475ac1c053379e7dbd4ce80b87d2178e
>     AES-192  24 48 16    252   0.252  c906422bfe0963de6df50e022b4aa7d4
>     AES-256  32 48 16    252   0.252  991f4017858de97515260dd9ae440b06
> 
> 3.0.0 alpha3:
>     AES-128  16 48 16    815   0.815  475ac1c053379e7dbd4ce80b87d2178e
>     AES-192  24 48 16    831   0.831  c906422bfe0963de6df50e022b4aa7d4
>     AES-256  32 48 16    846   0.846  991f4017858de97515260dd9ae440b06
> 
> 3.0.0-alpha3 improved:
>     AES-128  16 48 16    500   0.500  475ac1c053379e7dbd4ce80b87d2178e
>     AES-192  24 48 16    515   0.515  c906422bfe0963de6df50e022b4aa7d4
>     AES-256  32 48 16    530   0.530  991f4017858de97515260dd9ae440b06
> 
> Thanks again.
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 

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