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AM62L: Crypto Performance Evaluation For Real Example

Part Number: AM62L

Hello, Expert

I try to help customer evaluate crypto performance for their application.

Few question as below.

(1) Ref this page, 2.5.2.3.15.2. Crypto Performance Comparison

https://software-dl.ti.com/processor-sdk-linux/esd/AM62LX/12_00_00_07_04/exports/docs/devices/AM62LX/linux/Linux_Performance_Guide.html#openssl-performance

If the application need to crypto 20 device w/ AES 256  (+security accelerator) at the same time, and I guess total data volume may be 20MB (20 device), May I say totoal perforamance evaluation could be,

buffer size = 1024 bytes

20MB / 15.88 = 1.25 (sec)

May I say :

AES 256 w/ security accelerator for 20MB which need 1.25 sec !

Is it correct?

Thank You.

Gibbs

 

 

  • Hi Gibbs,
    - As shown in the table, the HW crypto operation is optimized for larger block sizes, and smaller buffer size will cause performance degradation compared to larger buffer size.
    - It is possible to explicitly set a custom block/buffer size using the -bufsize flag when calling openssl via devcrypto.
    Best,
    -Hong