linux-kernel - Re: [PATCH v3 1/3] crypto: drbg: DRBG should select SHA512

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Message-ID: <20200430044324.GA13460@gondor.apana.org.au>
Date:   Thu, 30 Apr 2020 14:43:24 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Corentin Labbe <clabbe@...libre.com>
Cc:     davem@...emloft.net, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] crypto: drbg: DRBG should select SHA512

On Fri, Apr 24, 2020 at 01:40:45PM +0000, Corentin Labbe wrote:
> Since DRBG could use SHA384/SHA512, it should select it.
> 
> Signed-off-by: Corentin Labbe <clabbe@...libre.com>
> ---
>  crypto/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/crypto/Kconfig b/crypto/Kconfig
> index c24a47406f8f..6d27fc6a7bf5 100644
> --- a/crypto/Kconfig
> +++ b/crypto/Kconfig
> @@ -1810,10 +1810,12 @@ config CRYPTO_DRBG_HMAC
>  	default y
>  	select CRYPTO_HMAC
>  	select CRYPTO_SHA256
> +	select CRYPTO_SHA512
>  
>  config CRYPTO_DRBG_HASH
>  	bool "Enable Hash DRBG"
>  	select CRYPTO_SHA256
> +	select CRYPTO_SHA512
>  	help
>  	  Enable the Hash DRBG variant as defined in NIST SP800-90A.

The default hash drbg is sha256, the others are only optional.

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