tree 6848c9d768079cc02d95f911ebb3ca4d666c62c6
parent eb9a8f3fb6762a4e6ae0aa9e96532c9c544f400e
author Marcel Holtmann <marcel@holtmann.org> 1389854259 -0800
committer Johan Hedberg <johan.hedberg@intel.com> 1392277895 +0200

Bluetooth: Introduce requirements for security level 4

The security level 4 is a new strong security requirement that is based
around 128-bit equivalent strength for link and encryption keys required
using FIPS approved algorithms. Which means that E0, SAFER+ and P-192
are not allowed. Only connections created with P-256 resulting from
using Secure Connections support are allowed.

This security level needs to be enforced when Secure Connection Only
mode is enabled for a controller or a service requires FIPS compliant
strong security. Currently it is not possible to enable either of
these two cases. This patch just puts in the foundation for being
able to handle security level 4 in the future.

It should be noted that devices or services with security level 4
requirement can only communicate using Bluetooth 4.1 controllers
with support for Secure Connections. There is no backward compatibilty
if used with older hardware.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>