The implementation was silently overwriting the IV length to 12
even though the caller passed a different value.
Change the behavior to signal that a different length is not supported.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
The implementation was silently overwriting the IV length to 12
even though the caller passed a different value.
Change the behavior to signal that a different length is not supported.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
psa_aead_encrypt_setup() and psa_aead_decrypt_setup() were returning
PSA_ERROR_INVALID_ARGUMENT, while the same failed checks were producing
PSA_ERROR_NOT_SUPPORTED if they happened in psa_aead_encrypt() or
psa_aead_decrypt().
The PSA Crypto API 1.1 spec will specify PSA_ERROR_INVALID_ARGUMENT
in the case that the supplied algorithm is not an AEAD one.
Also move these shared checks to a helper function, to reduce code
duplication and ensure that the functions remain in sync.
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
Fix library references, tests and programs.
Testing is performed in the already present all.sh test.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit removes code from the Montgomery multiplication routine
`mpi_montmul()` which seems to serve no purpose.
Details: `mpi_montmul()` uses a temporary storage `T` for intermediate
results which is assumed to be of twice the size as the inputs to be
multiplied, and which is used as follows: After the i-th (i=0,1,...)
iteration, the n-limb word starting at `T->p + i + 1` contains the
Montgomery multiplication of B with the limbs 0,..,i of A, and the
variable `d` points to `T->p + i + 1`. In particular, after `n` iterations,
`T->p + n` holds the full multiplication
(subject to conditional subtraction).
As a consequence of this way of using the temporary `T`, the contents
of `{T->p, ..., T->p + i}` are irrelevant after the i-th iteration. Nonetheless,
the code copies `A[i]` to `T->p[i]` at the end of the i-th iterations, which is
redundant and can be removed.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
* Updated the default argument to create less noise with argument
passing.
* Reworded ChangeLog to match MbedTLS documentation/ announcement
requirements
Signed-off-by: Archana <archana.madhavan@silabs.com>
Pylint errors are fixed.
The Python script is improved to take default arguments when not
passed (eg invoked from root of the tree)
check-generated-files.sh and CMakeLists.sh updated.
Signed-off-by: Archana <archana.madhavan@silabs.com>
Moved python script generate_driver_wrappers.py under scripts and
corresponding template file under script/data_files.
Signed-off-by: Archana <archana.madhavan@silabs.com>
The file psa_crypto_driver_wrappers.c is deleted to be autogenerated.
Updated psa_crypto_driver_wrappers.h, this file only contains the
prototypes for the driver wrappers, we don't expect this to be auto
generated.
Signed-off-by: Archana <archana.madhavan@silabs.com>
Having an automatically generated header file makes it harder to have
working build scripts. The content of ssl_debug_helpers_generated.h isn't
likely to change often, so we can update it manually.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Running `generate_ssl_debug_helpers.py` generates both
`ssl_debug_helpers_generated.c` and `ssl_debug_helpers_generated.h`.
List the `.h` file as well as the `.c` file in `check-generated-files.sh` so
that `check-generated-files.sh -u` will complain if it isn't up to date.
List it in `Makefile` and `CMakeLists.txt` so that parallel builds know when
to wait until the `.h` file is present. In `Makefile`, declare the `.c` file
as depending on the `.h` file for order. This way, a dependency for either
will wait until the `.h` file is present, and since the `.h` file is
generated after the `.c` file, this guarantees that the `.c` file is
present.
This fixes random failures of `make -j` from a fresh checkout.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Zeroize temporary buffers used to sanity-check the signature.
If there is an error, overwrite the tentative signature in the output
buffer.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Declare mbedtls_md functions as MBEDTLS_CHECK_RETURN_TYPICAL, meaning that
their return values should be checked.
Do check the return values in our code. We were already doing that
everywhere for hash calculations, but not for HMAC calculations.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Zeroize local MAC variables used for CBC+HMAC cipher suites. In encryption,
this is just good hygiene but probably not needed for security since the
data protected by the MAC that could leak is about to be transmitted anyway.
In DTLS decryption, this could be a security issue since an adversary could
learn the MAC of data that they were trying to inject. At least with
encrypt-then-MAC, the adversary could then easily inject a datagram with
a corrected packet. TLS would still be safe since the receiver would close
the connection after the bad MAC.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
mbedtls_pk_parse_key() makes a temporary copy of the key when it calls
pk_parse_key_pkcs8_encrypted_der(), because that function requires a
writable buffer. pk_parse_key_pkcs8_encrypted_der() always rejects an
empty password, so skip calling it in that case, which allows us to
skip the allocation as well.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
As we have now a minimal viable implementation of TLS 1.3,
let's remove EXPERIMENTAL from the config option enabling
it.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
"mbedtls_ssl_handshake_params: reorder fields to save code size" moved this
filed earlier along with byte-sized fields that should be in the 128-element
access window on Arm Thumb. This took away precious room in the 128-byte
window. Move it back further out.
Results (same architecture, config-suite-b.h + MBEDTLS_ECDH_LEGACY_CONTEXT +
MBEDTLS_ECP_RESTARTABLE):
library/ssl_cli.o: 2860 -> 2816 (diff: 44)
library/ssl_msg.o: 3080 -> 3076 (diff: 4)
library/ssl_srv.o: 3340 -> 3300 (diff: 40)
library/ssl_tls.o: 6546 -> 6478 (diff: 68)
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
