The main purpose of the change is to
know from the status, at any point in
the handshake, if early data can be
sent or not and why.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
The only real contraint on the raw buffer is that it is large
enough to contain 2 coordinates. Larger buffers are therefore
allowed and the extra data will simply be ignored.
Note = trying to impose a strict sizing on the raw buffer causes
several failures in test suites. This suggests that it is
quite common to use larger buffer to store raw signatures.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Allow the function to support DER buffers than what it is nominally
required by the provided coordinates. In other words let's ignore
padding zeros in the raw number.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Add discard_early_data_record in SSL context for
the record layer to know if it has to discard
some potential early data record and how.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Add a client view layout (and update related initializers)
for PSA sign/verify hash interruptible operation struct and
PAKE operation struct
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Make sure the layout of psa_key_attributes_s is commented
enough so that it does not accidentally get reorganized
by mistake in the future.
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
The test code to construct test keys and the implementation had matching
errors: both assumed that there was a PSA public key object. Fix this.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
In the MBEDTLS_PK_OPAQUE, have mbedtls_pk_get_psa_attributes() require the
specified usage to be enabled for the specified key. Otherwise the following
call to mbedtls_pk_import_into_psa() is unlikely to result in a key with a
useful policy, so the call to mbedtls_pk_get_psa_attributes() was probably
an error.
Adjust the existing test cases accordingly and add a few negative test
cases.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Due to the scope reduction for
mbedtls_ssl_read_early_data(), on
server as early data state variable
we now only need a flag in the
handshake context indicating if
the server has accepted early data
or not.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This reverts commit 0883b8b625.
Due to the scope reduction of mbedtls_ssl_read_early_data()
it is not necessary anymore to refine the usage
of early_data_status/state rather the opposite.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Do not progress the handshake in the API, just
read early data if some has been detected by
a previous call to mbedtls_ssl_handshake(),
mbedtls_ssl_handshake_step(),
mbedtls_ssl_read() or mbedtls_ssl_write().
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Introduce early_data_state SSL context field to
distinguish better this internal state from
the status values defined for the
mbedtls_ssl_get_early_data_status() API.
Distinguish also between the client and
server states. Note that the client state
are going to be documented and reworked
as part of the implementation of
mbedtls_ssl_write_early_data().
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
MBEDTLS_SSL_EARLY_DATA implies
MBEDTLS_SSL_PROTO_TLS1_3 thus
MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_SSL_EARLY_DATA
is equivalent to MBEDTLS_SSL_EARLY_DATA.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This function, and mbedtls_psa_crypto_free, are not thread safe as they wipe slots
regardless of state. They are not part of the PSA Crypto API, untrusted applications
cannot call these functions in a crypto service.
In a service intergration, mbedtls_psa_crypto_free on the client cuts the communication
with the crypto service.
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
Ideally this and other pk functions would work with
MBEDTLS_PSA_CRYPTO_CLIENT (i.e. whether PSA API functions are implemented
locally or via client-server communication). However, at the moment, some
helper functions are missing when MBEDTLS_PSA_CRYPTO_C is disabled, at least
mbedtls_ecc_group_to_psa(). For the time being, don't provide
mbedtls_pk_get_psa_attributes() when MBEDTLS_PSA_CRYPTO_C is disabled. We
can improve later, looking generally at a group of functions to generalize,
not mixed with delivering new APIs.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This is mandatory to have support for the error codes defined
in the asn1write.h header file.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Putting the id at the of the psa_key_attributes_s structure allows
for a more efficient marshalling of the parameters around a transport
channel which provides separation between a client view and a service
view of the key parameters.
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Any timing variance dependant on the output of this function enables a
Bleichenbacher attack. It is extremely difficult to use safely.
In the Marvin attack paper
(https://people.redhat.com/~hkario/marvin/marvin-attack-paper.pdf) the
author suggests that implementations of PKCS 1.5 decryption that don't
include a countermeasure should be considered inherently dangerous.
They suggest that all libraries implement the same countermeasure, as
implementing different countermeasures across libraries enables the
Bleichenbacher attack as well.
This is extremely fragile and therefore we don't implement it. The use
of PKCS 1.5 in Mbed TLS implements the countermeasures recommended in
the TLS standard (7.4.7.1 of RFC 5246) and is not vulnerable.
Add a warning to PKCS 1.5 decryption to warn users about this.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The initializatio macros need to be updated to support the case
where the crypto client view of the structures is being initialized
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
In case MBEDTLS_PSA_CRYPTO_CLIENT is defined and MBEDTLS_PSA_CRYPTO_C
is not, a client view of the multipart operation contexts is provided
through an handle object that allows mapping to the corresponding
service side data structures.
Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Make this a global mutex so that we don't have to init and free it.
Also rename the mutex to follow the convention
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
The purpose of this change is to eventually base
the calculation in ssl_ticket.c of the ticket age
when parsing a ticket on the ticket creation time
both in TLS 1.2 and TLS 1.3 case.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
The endpoint field is needed to serialize/deserialize
a session in TLS 1.2 the same way it is needed in the
TLS 1.3 case: client specific fields that should not
be in the serialized version on server side if both
TLS client and server are enabled in the TLS library.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Take into account that the lifetime of
tickets can be changed through the
mbedtls_ssl_ticket_rotate() API.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Disable ticket module if either the TLS
server or the support for session tickets
is not enabled at build time as in that
case the ticket module is not used by the
TLS library.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
The new name better reflects the fact that the 1st parameter
is just the EC family and not the curve.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
