Linux cryptodev CAAM Interface - Asymmetric Cryptography

[matthias_staube]

Hello,

I found out through the Linux documentation that CAAM is exposed to the Linux OS via the cryptodev interface. I was able to run the openssl command line example and reproduce the speed improvement for AES-CBC.

From the documentation I gather that symmetric cryptography (AES, DES), as well as various hash algorithms are supported. However, it appears that asymmetric cryptography is not supported through the cryptodev interface, although it is supported by CAAM (correct me if I'm wrong). This raises the following questions:

• Is there a specific reason for not supporting asymmetric cryptography operations (such as ECDSA signature verification) through the cryptodev interface?
•  Is it possible to enable support for accelerated asymmetric operations from within the Linux OS?

Thank you in advance for your insights.

Best Regards,

Matthias

SoC: i.MX 8M Quad, 4.14.98_2.0.0_ga

[Yuri · Accepted solution]

Hello,

  I've sent some comments directly.

Have a great day,

Yuri.

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