Secure AuthenticationのトピックRe: RSA OAEP support using RSA plain

RSA OAEP support using RSA plain

mgrand — Fri, 15 Dec 2023 14:02:12 GMT

Hello,

I need to implement RSA OAEP SHA256 using SE050. i have seen that this algorithm is not supprted by SE050 however i could use RSA plain and do the padding myself. SE050F does provide RSA (which is not the case for SE050E) but RSA plain seems to be disabled due to FIPS conformity. Is there any mean to implement RSA OAEP SHA256 on a SE050E/F component (some feature seem to be configurable) ?

Thank you

Re: RSA OAEP support using RSA plain

Kan_Li — Mon, 18 Dec 2023 09:08:00 GMT

Hi @mgrand ,

It is not possible to support RSA plain on SE050E/F, so you have to use SE051C instead, with some operations such as padding on the host side, and alternatively you may try to implement the RSA OAEP SHA256 as a custom applet on SE051P, please kindly refer to https://www.nxp.com/products/security-and-authentication/authentication/edgelock-se051-proven-easy-to-use-iot-security-solution-with-support-for-updatability-and-custom-applets:SE051 for details.

Hope that helps,

Best Regards,

Kan

Re: RSA OAEP support using RSA plain

mgrand — Mon, 18 Dec 2023 09:18:26 GMT

Can you confirm that SE051C is not discontinued (in contrary of SE050C) ?

Re: RSA OAEP support using RSA plain

Kan_Li — Tue, 19 Dec 2023 02:12:36 GMT

Hi @mgrand ,

I haven't heard that this part is discontinued, but it is not a mass market product, so you had better check with your local NXP Sales representatives for this topic.

Have a great day,
Kan

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