g10: Don't consider cross-signed keys to be in conflict.

* g10/tofu.c (cross_sigs): New function.
(ask_about_binding): If apparently conflicting keys are cross signed,
then don't mark them as conflicting.

--
Signed-off-by: Neal H. Walfield <[email protected]>

If two keys are cross signed, then the same person (probably)
controlled them both.  In this case, don't raise a TOFU conflict.
This usually occurs when someone transitions to a new key.  When that
person rotates to a third key, she will typically only cross sign it
with the second key.  As such, we check this transitively to avoid
declaring a conflict between the 1st and 3rd key.

0 files changed, 0 insertions, 0 deletions