vb21_common2_tests: Fix test for exponent 3 keys
vb2_public_key_read_keyb cannot be used for VB2.1 public keys
(especially not for 2048 exponent 3 or F4, as their size is the
same so the algorithm cannot be guess).
Instead, do what futility/rwsig does and derive the public key from
the private RSA key.
BRANCH=none
BUG=b:64854892
TEST=make runlongtests
Change-Id: Ie81f40e6076cd0c234012b9af58e39425f8b717c
Signed-off-by: Nicolas Boichat <drinkcat@google.com>
Reviewed-on: https://chromium-review.googlesource.com/628177
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Caveh Jalali <caveh@google.com>
1 file changed
