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Switch checksums from MD5 to BLAKE2

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Historically, the MD5 checksums in our LFS files serve as a protection
against broken downloads, or accidentally corrupted source files.

While the sources are nowadays downloaded via HTTPS, it make sense to
beef up integrity protection for them, since transparently intercepting
TLS is believed to be feasible for more powerful actors, and the state
of the public PKI ecosystem is clearly not helping.

Therefore, this patch switches from MD5 to BLAKE2, updating all LFS
files as well as make.sh to deal with this checksum algorithm. BLAKE2 is
notably faster (and more secure) than SHA2, so the performance penalty
introduced by this patch is negligible, if noticeable at all.

In preparation of this patch, the toolchain files currently used have
been supplied with BLAKE2 checksums as well on
https://source.ipfire.org/.

Cc: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Acked-by: Michael Tremer <michael.tremeripfire.org>
This commit is contained in:
Peter Müller
2022-03-23 11:12:31 +00:00
parent d95b4c94db
commit 9a7e4d8506
651 changed files with 3211 additions and 3214 deletions
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9
lfs/Config
View File

@@ -13,7 +13,7 @@
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2007-2021 IPFire Team <info@ipfire.org> #
# Copyright (C) 2007-2022 IPFire Team <info@ipfire.org> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
@@ -347,14 +347,13 @@ endef
define LOAD
@echo -e "$(MESSAGE)Download: $($(notdir $@))"
wget -T 60 -t 1 -nv -U "IPFireSourceGrabber/2.x" $($(notdir $@)) -O $(DIR_TMP)/$(notdir $@)
[ "$($(notdir $@)_MD5)" = `md5sum $(DIR_TMP)/$(notdir $@) | awk '{ print $$1 }'` ] # detect page not found answer
[ "$($(notdir $@)_BLAKE2)" = "$(firstword $(shell b2sum $(DIR_TMP)/$(notdir $@))" ] # detect page not found answer
mv $(DIR_TMP)/$(notdir $@) $(DIR_DL)
endef
define MD5
define B2SUM
# error mean file signature don't match the one in lfs script
[ "$($@_MD5)" = `md5sum $(DIR_DL)/$@ | awk '{ print $$1 }'` ]
echo "$@ checksum OK"
[ "$($@_BLAKE2)" = "$(firstword $(shell b2sum $(DIR_DL)/$@))" ] && echo "$@ checksum OK"
endef
define PAK