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system cfg: remove mkpasswd MD5 format option

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As SHA256 is now default, removing weak MD5 option.  C libraries now
all support the SHA methods.
    glibc 2.7+
    uclibc (bdd8362a88 package/uclibc: defconfig: enable sha-256...)
    musl 1.1.14+

One issue this would prevent, is a host tool issue with a FIPS enabled
system where weak ciphers/methods are disabled. It seems the crypt(3)
call is impacted by /proc/sys/crypto/fips_enabled (per crypt(3) man
page). It results in mkpasswd returning "(EPERM) crypt failed."
Rather then create a Buildroot host dependency check, this patch
removes the potential corner case from being selected.

Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Matt Weber 2018-12-05 20:06:29 -06:00 committed by Peter Korsgaard
parent 9cf2280846
commit bf3626002f
2 changed files with 8 additions and 10 deletions
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8
Config.in.legacy
View File

@ -143,6 +143,7 @@ comment "----------------------------------------------------"
endif endif
############################################################################### ###############################################################################
comment "Legacy options removed in 2019.02" comment "Legacy options removed in 2019.02"
config BR2_PACKAGE_LUA_5_2 config BR2_PACKAGE_LUA_5_2
@ -152,6 +153,13 @@ config BR2_PACKAGE_LUA_5_2
help help
The Lua 5.2.x version was removed. The Lua 5.2.x version was removed.
config BR2_TARGET_GENERIC_PASSWD_MD5
bool "target passwd md5 format support has been removed"
select BR2_LEGACY
help
The default has been moved to SHA256 and all C libraries
now support that method by default
comment "Legacy options removed in 2018.11" comment "Legacy options removed in 2018.11"
config BR2_TARGET_XLOADER config BR2_TARGET_XLOADER

10
system/Config.in
View File

@ -68,16 +68,6 @@ choice
Note: this is used at build-time, and *not* at runtime. Note: this is used at build-time, and *not* at runtime.
config BR2_TARGET_GENERIC_PASSWD_MD5
bool "md5"
help
Use MD5 to encode passwords.
The default. Wildly available, and pretty good.
Although pretty strong, MD5 is now an old hash function, and
suffers from some weaknesses, which makes it susceptible to
brute-force attacks.
config BR2_TARGET_GENERIC_PASSWD_SHA256 config BR2_TARGET_GENERIC_PASSWD_SHA256
bool "sha-256" bool "sha-256"
help help