Using the trusted RSA or ECC Endorsement Key of the TPM 2.0 a
secure session is established via RSA public key encryption or
an ephemeral ECDH key exchange, respectively.
The session allows HMAC-based authenticated communication with
the TPM 2.0 and the exchanged parameters can be encrypted where
necessary to guarantee confidentiality.
Optionally load the legacy provider in OpenSSL 3 (enabled, by default) to
make algorithms like MD4 and DES available, which we require for
EAP-MSCHAPv2. Allow explicitly loading the fips provider via existing
fips_mode option. The loaded providers, whether influenced by the above
options or not, are logged.
Closesstrongswan/strongswan#759
We still require these algorithms for e.g. EAP-MSCHAPv2, so the option is
enabled, by default. To use other providers (e.g. fips or even custom
ones), the option can be disabled and the providers to load/activate can
be configured in openssl.cnf. For instance, the following has the same
effect as enabling the option:
openssl_conf = openssl_init
[openssl_init]
providers = providers
[providers]
default = activate
legacy = activate
[activate]
activate = yes
Improves handling failures during unit tests of libtls and includes a
change for the openssl plugin so it only announces ECDH groups for which
the library provides the required ECC curve.
Closesstrongswan/strongswan#752
Determined by whether the library provides curves for it or not.
For instance, in the OpenSSL 3 FIPS provider the Brainpool curves are
not included. And in the Fedora package several weak curves are
explicitly patched out and the Brainpool curves are omitted even in
non-FIPS mode.
In particular as server, the previous code might cause it to hang in
recv() if this case wasn't triggered by a close notify (followed by a
shutdown of the socket) but it e.g. failed processing a ServerHello and
responded with a fatal alert.
Fixes: 09fbaad6bd71 ("tls-socket: Don't fail reading if sending data failed")
This is useful for kernel implementations where the ordering of SAs
is unpredictable and the new SA might otherwise not be used until the
DELETE response has been received, which is not ideal as the responder
might not keep the old SA around that long. On Linux, it makes no
difference as we switch to the new outbound SA immediately because the
updated outbound policy references its SPI.
Use a Debian-based Docker container to run the unit tests for charon-tkm,
once without and once with TKM running. The container can also be used
locally to run the tests (see comments in the Dockerfile).
This way we can run many unit tests without having to run the TKM in the
background and as regular user. To run the other tests, TESTS_TKM can
optionally be defined when running `make check`.
The default MTU of 1500 is too high if kernel-libipsec is used (considering
the overhead of UDP-encapsulated ESP), but might also have an effect if
a TUN device is only used to install a virtual IP (the route points to it,
so the system might use its MTU and 1500 would still be too high).
This also works around an issue on macOS 12 where no RTM_IFINFO event
is sent for the newly created TUN device (neither for the creation,
setting it "up", nor adding the address). Changing the MTU, however,
triggers such an event and we can detect the virtual IP.
Closesstrongswan/strongswan#707
Currently the length of vendor ID Cisco VPN Concentrator is 16
bytes but the string has only 13+1 bytes. The actual vendor
ID has 16 bytes with a prefix length of 14 bytes and two version
bytes.
Fixes: 6c49ddfbca72 ("ike: Add additional Vendor IDs for third-party implementations")
Before commit 6c49ddfbca ("ike: Add additional Vendor IDs for
third-party implementations") the prefix length of vendor ID
Cisco Unity was hardcoded to 14. Since we need to know the actual
length of this VID to send it, the length can't be overloaded
with a prefix length. Revert part of commit 6c49ddfbca to
fix this problem.
Fixes: 6c49ddfbca72 ("ike: Add additional Vendor IDs for third-party implementations")
Before commit 6c49ddfbca ("ike: Add additional Vendor IDs for
third-party implementations") the prefix length of vendor ID
MS NT5 ISAKMPOAKLEY was hardcoded to 16. Change the prefix length
accordingly.
Fixes: 6c49ddfbca72 ("ike: Add additional Vendor IDs for third-party implementations")
