linux-kernel - Re: [RFC PATCH] akcipher: Introduce verify2 for public key algorithms

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Message-ID: <b2e6060c-1e2a-c2c5-0484-715646d16201@microchip.com>
Date:   Thu, 13 Dec 2018 10:26:53 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <vt@...linux.org>, <dhowells@...hat.com>,
        <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <keyrings@...r.kernel.org>, <linux-crypto@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] akcipher: Introduce verify2 for public key algorithms

Hi,

On 12/11/2018 06:59 PM, Vitaly Chikunov wrote:
> Current akcipher .verify() just decrypts signature to uncover message
> hash, which is then verified in upper level public_key_verify_signature
> by memcmp with the expected signature value, which is never passed into
> verify().
> 
> This approach is incompatible with ECDSA algorithms, because, to verify

I would love to have ECDSA in kernel but unfortunately it hasn't reached kernel
because there is no in-kernel user for it. Do we have an agreement that we will
add support for it? If not, who will benefit of these patches?

Thanks,
ta