linux-kernel - Re: [PATCH] certs: move the 'depends on' to the choice of module signing keys

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Date:   Sat, 11 Dec 2021 22:10:19 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     keyrings@...r.kernel.org
Cc:     Stefan Berger <stefanb@...ux.ibm.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] certs: move the 'depends on' to the choice of module
 signing keys

On Fri, Oct 1, 2021 at 1:02 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> When the condition "MODULE_SIG || (IMA_APPRAISE_MODSIG && MODULES)"
> is unmet, you cannot choose anything in the choice, but the choice
> menu is still displayed in the menuconfig etc.
>
> Move the 'depends on' to the choice to hide the meaningless menu.
>
> Also delete the redundant 'default'. In a choice, the first entry is
> the default.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---

Applied to linux-kbuild.




>
>  certs/Kconfig | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/certs/Kconfig b/certs/Kconfig
> index ae7f2e876a31..73d1350c223a 100644
> --- a/certs/Kconfig
> +++ b/certs/Kconfig
> @@ -17,21 +17,19 @@ config MODULE_SIG_KEY
>
>  choice
>         prompt "Type of module signing key to be generated"
> -       default MODULE_SIG_KEY_TYPE_RSA
> +       depends on MODULE_SIG || (IMA_APPRAISE_MODSIG && MODULES)
>         help
>          The type of module signing key type to generate. This option
>          does not apply if a #PKCS11 URI is used.
>
>  config MODULE_SIG_KEY_TYPE_RSA
>         bool "RSA"
> -       depends on MODULE_SIG || (IMA_APPRAISE_MODSIG && MODULES)
>         help
>          Use an RSA key for module signing.
>
>  config MODULE_SIG_KEY_TYPE_ECDSA
>         bool "ECDSA"
>         select CRYPTO_ECDSA
> -       depends on MODULE_SIG || (IMA_APPRAISE_MODSIG && MODULES)
>         help
>          Use an elliptic curve key (NIST P384) for module signing. Consider
>          using a strong hash like sha256 or sha384 for hashing modules.
> --
> 2.30.2
>


-- 
Best Regards
Masahiro Yamada