Does openssl pick low level interface or high level interface to do encrypt?

[- JinsongJi <jjsbear@xxxxxxxxxxx>]

Hi,

 

For one simple operation: openssl enc -aes-256-cbc -salt -in foo.txt -out foo.enc

Does openssl pick classic implementation or AES-NI implementation to do this encrypt?

 

Does any user/application always pick classic implementation for AES operation regardless of AES-NI improves speed much?

Is there any document about this interface selection?

 

Thanks,

Jinsong

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