[PATCH] crypto: consistently name the algo digest symbols HAVE_DIGEST_...

[Sascha Hauer]

On Wed, Feb 09, 2022 at 10:59:24AM +0100, Uwe Kleine-König wrote:
> The better naming prevents confusion (for me at least) because
> MACHINE_ID depends on a symbol that cannot be enabled manually.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> ---

Applied, thanks

Sascha

> On Wed, Feb 09, 2022 at 10:32:21AM +0100, Ahmad Fatoum wrote:
> > On 09.02.22 09:51, Uwe Kleine-König wrote:
> > > SHA1 is a symbol that cannot be enabled manually and all other symbols
> > > needing it, select it:
> > > 
> > > $ git grep -B3 -E '(depends on|select) SHA1\>' HEAD
> > > HEAD:common/Kconfig-config MACHINE_ID
> > > HEAD:common/Kconfig-    bool "compute unique machine-id"
> > > HEAD:common/Kconfig-    depends on FLEXIBLE_BOOTARGS
> > > HEAD:common/Kconfig:    depends on SHA1
> > > --
> > > HEAD:crypto/Kconfig-
> > > HEAD:crypto/Kconfig-config DIGEST_SHA1_GENERIC
> > > HEAD:crypto/Kconfig-    bool "SHA1"
> > > HEAD:crypto/Kconfig:    select SHA1
> > > --
> > > HEAD:crypto/Kconfig-config DIGEST_SHA1_ARM
> > > HEAD:crypto/Kconfig-    tristate "SHA1 digest algorithm (ARM-asm)"
> > > HEAD:crypto/Kconfig-    depends on ARM
> > > HEAD:crypto/Kconfig:    select SHA1
> > > 
> > > Fixes: aada84e72e15 ("common: machine_id: introduce machine id generation")
> > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> > 
> > SHA1 is selected by either DIGEST_SHA1_GENERIC or DIGEST_SHA1_ARM.
> > I don't think this is correct.
> 
> Yes, understood that now, too and agree my patch is bad.
> 
> My confusion wouldn't have happend with this patch:
> 
>  common/Kconfig |  2 +-
>  crypto/Kconfig | 34 +++++++++++++++++-----------------
>  2 files changed, 18 insertions(+), 18 deletions(-)
> 
> diff --git a/common/Kconfig b/common/Kconfig
> index e540cba7ebaa..6e82f8900e6b 100644
> --- a/common/Kconfig
> +++ b/common/Kconfig
> @@ -1042,7 +1042,7 @@ config RESET_SOURCE
>  config MACHINE_ID
>  	bool "compute unique machine-id"
>  	depends on FLEXIBLE_BOOTARGS
> -	depends on SHA1
> +	depends on HAVE_DIGEST_SHA1
>  	help
>  	  Compute a persistent machine-specific id and store it to $global.machine_id.
>  	  The id is a hash of device-specific information added via
> diff --git a/crypto/Kconfig b/crypto/Kconfig
> index ff83a40f5b43..19994c9d8372 100644
> --- a/crypto/Kconfig
> +++ b/crypto/Kconfig
> @@ -14,25 +14,25 @@ menuconfig DIGEST
>  
>  if DIGEST
>  
> -config MD5
> +config HAVE_DIGEST_MD5
>  	bool
>  
> -config SHA1
> +config HAVE_DIGEST_SHA1
>  	bool
>  
> -config SHA224
> +config HAVE_DIGEST_SHA224
>  	bool
>  
> -config SHA256
> +config HAVE_DIGEST_SHA256
>  	bool
>  
> -config SHA384
> +config HAVE_DIGEST_SHA384
>  	bool
>  
> -config SHA512
> +config HAVE_DIGEST_SHA512
>  	bool
>  
> -config DIGEST_HMAC
> +config HAVE_DIGEST_HMAC
>  	bool
>  
>  config DIGEST_CRC32_GENERIC
> @@ -41,36 +41,36 @@ config DIGEST_CRC32_GENERIC
>  
>  config DIGEST_MD5_GENERIC
>  	bool "MD5"
> -	select MD5
> +	select HAVE_DIGEST_MD5
>  
>  config DIGEST_SHA1_GENERIC
>  	bool "SHA1"
> -	select SHA1
> +	select HAVE_DIGEST_SHA1
>  
>  config DIGEST_SHA224_GENERIC
>  	bool "SHA224"
> -	select SHA224
> +	select HAVE_DIGEST_SHA224
>  
>  config DIGEST_SHA256_GENERIC
>  	bool "SHA256"
> -	select SHA256
> +	select HAVE_DIGEST_SHA256
>  
>  config DIGEST_SHA384_GENERIC
>  	bool "SHA384"
> -	select SHA384
> +	select HAVE_DIGEST_SHA384
>  
>  config DIGEST_SHA512_GENERIC
>  	bool "SHA512"
> -	select SHA512
> +	select HAVE_DIGEST_SHA512
>  
>  config DIGEST_HMAC_GENERIC
>  	bool "HMAC"
> -	select DIGEST_HMAC
> +	select HAVE_DIGEST_HMAC
>  
>  config DIGEST_SHA1_ARM
>  	tristate "SHA1 digest algorithm (ARM-asm)"
>  	depends on ARM
> -	select SHA1
> +	select HAVE_DIGEST_SHA1
>  	help
>  	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
>  	  using optimized ARM assembler.
> @@ -78,8 +78,8 @@ config DIGEST_SHA1_ARM
>  config DIGEST_SHA256_ARM
>  	tristate "SHA-224/256 digest algorithm (ARM-asm and NEON)"
>  	depends on ARM
> -	select SHA256
> -	select SHA224
> +	select HAVE_DIGEST_SHA256
> +	select HAVE_DIGEST_SHA224
>  	help
>  	  SHA-256 secure hash standard (DFIPS 180-2) implemented
>  	  using optimized ARM assembler and NEON, when available.
> -- 
> 2.34.1
> 
> 
> -- 
> Pengutronix e.K.                           | Uwe Kleine-König            |
> Industrial Linux Solutions                 | https://www.pengutronix.de/ |



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