Reimplement attestation code one more time

Move end-to-end attestation code into its own library: patatt. See
https://git.kernel.org/pub/scm/utils/patatt/patatt.git/about/

It is included into b4 as a submodule, but you will need to init it
first:

git submodule update --init

This change significantly simplifies our attestation code, dropping
thousands of lines of rather hairy code. Notably, patatt-style
attestation is incompatible with previous attestation implementations
done directly in b4, but that's just as well -- we've always marked it
as "experimental" and the lack of adoption was proving that we weren't
on the right path.

Next to come is keyring management and documentation.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/b4.sh b/b4.sh
index e1f6c4e..10d33b7 100755
--- a/b4.sh
+++ b/b4.sh
@@ -6,4 +6,4 @@
 REAL_SCRIPT=$(realpath -e ${BASH_SOURCE[0]})
 SCRIPT_TOP="${SCRIPT_TOP:-$(dirname ${REAL_SCRIPT})}"
 
-exec env PYTHONPATH="${SCRIPT_TOP}" python3 "${SCRIPT_TOP}/b4/command.py" "${@}"
+exec env PYTHONPATH="${SCRIPT_TOP}:${SCRIPT_TOP}/patatt" python3 "${SCRIPT_TOP}/b4/command.py" "${@}"