Adding the AP/RSS interface for reading the ROTPK.
The read interface implements the psa_call:
psa_call(RSS_CRYPTO_HANDLE, PSA_IPC_CALL,
in_vec, IOVEC_LEN(in_vec),
out_vec, IOVEC_LEN(out_vec));
where the in_vec indicates which of the 3 ROTPKs we want,
and the out_vec stores the ROTPK value we get back from RSS.
Through this service, we will be able to read any of the 3
ROTPKs used on a CCA platform:
- ROTPK for CCA firmware (BL2, BL31, RMM).
- ROTPK for secure firmware.
- ROTPK for non-secure firmware.
Change-Id: I44c615588235cc797fdf38870b74b4c422be0a72
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
With the current implementation of stripping the last null
byte from a string, there was no way to get the TF-M measured
boot test suite to pass. It would expect the size of the string
passed into extend measurement to be unaffected by the call.
This fix should allow passing a string with the null char
pre-stripped, allowing the tests to exclude the null char in
their test data and not have the length decremented.
Further, This patch adds an early exit if either the version
or sw_type is larger than its buffer. Without this check,
it may be possible to pass a length one more than the maximum,
and if the last element is a null, the length will be truncated
to fit. This is instead suppsed to return an error.
Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
Change-Id: I98e1bb53345574d4645513009883c6e7b6612531
Retrieved the platform attestation token and delegated realm attestation
key through the PSA delegated attestation layer.
Even though FVP doesn't support RSS hardware today, it can still
leverage the RSS implementation of these PSA interfaces in their mocking
form (see PLAT_RSS_NOT_SUPPORTED).
Therefore, platform APIs now call these PSA interfaces instead of
directly providing these hardcoded values.
Change-Id: I31d0ca58f6f1a444f513d954da4e3e67757321ad
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Adding AP/RSS interface for retrieving and incrementing non-volatile
counters.
The read interface implements the psa_call:
psa_call(RSS_PLATFORM_SERVICE_HANDLE,
RSS_PLATFORM_API_ID_NV_READ,
in_vec, 1, out_vec, 1);
where the in_vec indicates which of the 3 counters we want, and the
out_vec stores the counter value we get back from RSS.
The increment interface implements the psa_call:
psa_call(RSS_PLATFORM_SERVICE_HANDLE,
RSS_PLATFORM_API_ID_NV_INCREMENT,
in_vec, 1, (psa_outvec *)NULL, 0);
where, again, in_vec indicates the counter to increment, and we don't
get any output parameter from RSS.
Through this service, we will be able to get/increment any of the 3 NV
counters used on a CCA platform:
- NV counter for CCA firmware (BL2, BL31, RMM).
- NV counter for secure firmware.
- NV counter for non-secure firmware.
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Signed-off-by: Raef Coles <raef.coles@arm.com>
Change-Id: I4c1c7f4837ebff30de16bb0ce7ecd416b70b1f62
Remove the null-terminator of the string-like data items
from the RSS measurement's metadata. The 'version' and
'sw_type' items have an associated length value which
should not include a null-terminator when storing the
measurement.
Change-Id: Ia91ace2fff8b6f75686dd2e1862475268300bbdb
Signed-off-by: David Vincze <david.vincze@arm.com>
This API is added for testing purposes. It makes possible to write test
cases that read measurements back after extending them, and compare
them to expected results.
Change-Id: Iec447d972fdd54a56ab933a065476e0f4d35a6fc
Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>
Fix a syntax error in the delegated attestation service code.
Unfortunately, this build failure was not caught by the CI system
because right now lib/psa/delegated_attestation.c file is not getting
pulled in by any upstream platform. This will be addressed in a
separate patch.
Change-Id: Idb84f62aabc5008396213023fc40547097925860
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Print all the params of
rss_measured_boot_extend_measurement() to
the console to check parameter healthiness.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I072fe5fef72c67e615ab64e06a9e1f6add5e9cfc
The attestation key derivation and platform attestation token
creation functionality is provided by the Delegated Attestation
partition in RSS.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I2d8c0e6589d11e7c81c698adf75ee2a993e3a0c6
The measured boot API is available in the tf-m-extras
repo:
partitions/measured_boot/interface/src/measured_boot_api.c
This change make the API behavior align with
the original implementation.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Ie4af38b859f942b2ef090e92da64d75811b5b49b
Delegated attestation is a service provided by RSS to:
- Derive a delegated attestation key: Realm Attestation Key
- Query the platform attestation token
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I3edf09fcbef24bca7c8a000ffac8c1ab64dfb812
Most traces displayed by log_measurement() use the INFO verbosity
level. Only the digests are unconditionally printed, regardless of
the verbosity level. As a result, when the verbosity level is set
lower than INFO (typically in release mode), only the digests are
printed, which look weird and out of context.
Change-Id: I0220977c35dcb636f1510d8a7a0a9e3d92548bdc
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Fixing possible Null pointer dereference error, found
by Coverity scan.
Change-Id: If60b7f7e13ecbc3c01e3a9c5005c480260bbabdd
Signed-off-by: David Vincze <david.vincze@arm.com>
Introduce PLAT_RSS_NOT_SUPPORTED build config to
provide a mocked version of PSA APIs. The goal is
to test the RSS backend based measured boot and
attestation token request integration on such
a platform (AEM FVP) where RSS is otherwise
unsupported. The mocked PSA API version does
not send a request to the RSS, it only returns
with success and hard-coded values.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Ice8d174adf828c1df08fc589f0e17abd1e382a4d
Supports:
- Get Platform Attestation token from secure enclave
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Icaeb7b4eaff08e10f449fbf752068de3ac7974bf
A secure enclave could provide an alternate
backend for measured boot. This API can be used
to store measurements in a secure enclave, which
provides the measured boot runtime service.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I2448e324e7ece6b318403c5937dfe7abea53d0f3
laurenw-arm
Jimmy Brisson
Manish V Badarkhe
David Vincze
Mate Toth-Pal
Sandrine Bailleux
Tamas Ban