linux-kernel - Re: [v3 PATCH] crypto: stm32 - Save and restore between each request

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Message-ID: <Y/3IA4OjmUmjMgh1@gondor.apana.org.au>
Date:   Tue, 28 Feb 2023 17:23:15 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Lionel Debieve <lionel.debieve@...s.st.com>,
        Li kunyu <kunyu@...china.com>, davem@...emloft.net,
        linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com, mcoquelin.stm32@...il.com
Subject: Re: [v3 PATCH] crypto: stm32 - Save and restore between each request

On Tue, Feb 28, 2023 at 05:12:01PM +0800, Herbert Xu wrote:
>
> What about the non-hmac algorithms? Do they pass or fail? If they
> fail what's the kernel dmesg?

I can see a problem with hmac.  The hmac key state wasn't stored
in the rctx so it gets repeatedly written to the hardware on each
operation, resulting in a bogus digest.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt