diff options
| author | Daniel Kahn Gillmor <dkg@fifthhorseman.net> | 2019-03-23 13:35:43 +0100 |
|---|---|---|
| committer | David Bremner <david@tethera.net> | 2019-03-27 17:53:41 -0300 |
| commit | 01f9c71312937011c4474688d3d1dd64c14731fb (patch) | |
| tree | 3c0a6dac397673f4455eea645ae361447cba9a1c | |
| parent | cc8d837d5a137a14a62526dcea60af1de7a353e4 (diff) | |
build: distribute signed sha256sums
Distribute clearsigned sha256sum file in addition to the detached
signature.
Verifies that use the sha256sum ensure that the thing signed includes
the name of the tarball. This defends the verifier by default against
a freeze, rollback, or project substitution attack.
A verifier can use something like the following (as expressed in
bash):
set -o pipefail
wget https://notmuchmail.org/releases/notmuch-$VERSION.tar.gz{,.sha256.asc}
gpgv --keyring ./notmuch-signers.pgp --output - notmuch-$VERSION.tar.gz.sha256.asc | sha256sum -c -
See id:87r2b8w956.fsf@fifthhorseman.net and other messages in that
thread for discussion.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
| -rw-r--r-- | Makefile.global | 2 | ||||
| -rw-r--r-- | Makefile.local | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/Makefile.global b/Makefile.global index 6e17494a..27c82433 100644 --- a/Makefile.global +++ b/Makefile.global @@ -43,7 +43,7 @@ RELEASE_URL=https://notmuchmail.org/releases TAR_FILE=$(PACKAGE)-$(VERSION).tar.gz ELPA_FILE:=$(PACKAGE)-emacs-$(ELPA_VERSION).tar DEB_TAR_FILE=$(PACKAGE)_$(VERSION).orig.tar.gz -SHA256_FILE=$(TAR_FILE).sha256 +SHA256_FILE=$(TAR_FILE).sha256.asc GPG_FILE=$(TAR_FILE).asc PV_FILE=bindings/python/notmuch/version.py diff --git a/Makefile.local b/Makefile.local index 8535844a..eb599565 100644 --- a/Makefile.local +++ b/Makefile.local @@ -40,7 +40,7 @@ $(TAR_FILE): @echo "Source is ready for release in $(TAR_FILE)" $(SHA256_FILE): $(TAR_FILE) - sha256sum $^ > $@ + sha256sum $^ | gpg --clear-sign --output $@ - $(GPG_FILE): $(TAR_FILE) gpg --armor --detach-sign $^ |