Known hosts can be a difficult problem to troubleshoot.
To make it easier for end users, the generic message has
now been changed with a much more user friendly one.
Now if a known_host is not set, an error message will be
returned, instead of it simply being ignored.
Signed-off-by: Paulo Gomes <paulo.gomes@weave.works>
Earlier, host key verification could potentially fail if there were
multiple entries in the known_hosts file and if the intended encryption
algorithm wasn't the first entry. This happened because we used the same
hasher object to compute the sum of all the public keys present in the
known_hosts file, which led to invalid hashes, resulting in a mismatch
when compared with the hash of the advertised public key. This is fixed,
by not creating the hasher ourselves and instead delegating that to the
function actually doing the matching, ensuring that a new hasher is used
for each comparison.
Regression introduced in v0.25.0 and reported in
https://github.com/fluxcd/image-automation-controller/issues/378
Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>
Paulo Gomes
Sanskar Jaiswal