According to the design in psa-driver-interface.md. Compiles without
issue in test_psa_crypto_drivers.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Where a change was necessary, the new documentation was copied from the
PSA Crypto API spec exactly, with the exception of PSA_AEAD_TAG_LENGTH,
which needed some adjustment.
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
Fix expected error code when importing a persistent key or
registering a key with an invalid key identifier:
PSA_ERROR_INVALID_ARGUMENT instead of PSA_ERROR_INVALID_HANDLE.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Implementers and users would have to refer to the RFC for the detailed
specification of the algorithm anyway.
Keep a mention of the curves and hashes involved for avoidance of doubt.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The coordinates are over $F_{2^{255}-19}$, so by the general
definition of the bit size associated with the curve in the
specification, the value for size attribute of keys is 255.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The size attribute of a key is expressed in bits, so use bits in the
documentation. (The documentation of psa_export_key() describes the
export format, so it counts in bytes.)
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Call it “SHAKE256-512”, just like SHA3-512 has 512 bits of output.
SHAKE256-64 looks like it's 64 bits of output, but this is 64 bytes.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Define algorithms for PureEdDSA and for HashEdDSA, the EdDSA variants
defined by RFC 8032.
The encoding for HashEdDSA needs to encode the hash algorithm so that
the hash can be calculated by passing PSA_ALG_SIGN_GET_HASH(sig_alg)
to psa_hash_compute() or psa_hash_setup(). As a consequence,
Ed25519ph (using SHA-512) and Ed448ph (using SHAKE256) need to have
different algorithm encodings (the key is enough to tell them apart,
but it is not known while hashing). Another consequence is that the
API needs to recognize the Ed448 prehash (64 bytes of SHAKE256 output)
as a hash algorithm.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Add an elliptic curve family for the twisted Edwards curves
Edwards25519 and Edwards448 ("Goldilocks"). As with Montgomery curves,
since these are the only two curves in common use, the family has a
generic name.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Remove cipher_generate_iv driver entry point as there
is no known use case to delegate this to a driver.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Move members that are of no use to the PSA crypto core
to the Mbed TLS implementation specific operation context.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
For cipher multi-part operations, dispatch based on
the driver identifier even in the case of the
Mbed TLS software implementation (viewed as a driver).
Also use the driver identifier to check that an
cipher operation context is active or not.
This aligns the way hash and cipher multi-part
operations are dispatched.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Add missing PSA_WANT_CCM/GCM/CMAC. This completes
the set of PSA_WANT config options given the
current support of PSA crypto in Mbed TLS.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
When these names were changed, the definition got misaligned with the
rest of the fields. Fix this alignment.
Signed-off-by: David Brown <david.brown@linaro.org>
The hash driver entry points (and consequentially the hash driver core)
are now always compiled on when PSA_CRYPTO_DRIVER_TEST is turned on.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Drivers (both built-in and external) need to declare their context
structures in a way such that they are accessible by the
to-be-autogenerated crypto_driver_contexts.h file. That file lives in
include/psa, which means all builtin driver context structure
declarations also need to live in include/psa.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
psa_aead_generate_nonce() could generate a nonce of up to 13 bytes,
depending on the inputs to psa_aead_set_lengths().
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
An earlier commit fixes the names of the PSA_WANT_ECC_ macros. Update
the crypto_config.h file to match these new names.
Signed-off-by: David Brown <david.brown@linaro.org>
Apparently there's a goal to make the PSA Crypto core free from
dynamic memory allocations. Therefore, all driver context structures
need to be known at compile time in order for the core to know their
final size.
This change defines & implements for hashing operations how the context
structures get defined.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Fix places where Doxygen documentation uses \p to refer to a parameter
name and where the name used did not match the actual parameter name.
I used the following script to detect problematic cases:
```
perl -w -ne 'if (eof) { $. = 0; } if (m!^/\*\*!) { $in_doc = 1; %param = (); %p = (); } if (m!\*/!) { foreach $name (keys %p) { if (!$param{$name}) { foreach $line (@{$p{$name}}) { print "$ARGV:$line: $name\n" } } } $in_doc = 0; } if ($in_doc) { if (/\\param(?: *\[[^\[\]]*\])? +(\w+)/) { $param{$1} = 1; } foreach (/\\p +\*?(\w+)/) { push @{$p{$1}}, $.; } }' include/psa/*.h
```
This commits fixes all the remaining occurrences under include/psa,
which were just trivial name mismatches.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
In Doxygen documentation, use \c rather than \p when discussing
something that isn't a parameter of the current macro or function.
Where needed, explain what the thing is.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
PSA_KEY_TYPE_RAW_DATA and PSA_KEY_TYPE_DERIVE are always supported.
Make this explicit by declaring PSA_WANT_KEY_TYPE_RAW_DATA and
PSA_WANT_KEY_TYPE_DERIVE unconditionally. This makes it easier to
infer dependencies in a systematic way.
Don't generate not-supported test cases for those key types. They
would always be skipped, which is noise and would make it impossible
to eventually validate that all test cases pass in at least one
configuration over the whole CI.
Don't remove the exception in set_psa_test_dependencies.py for now, to
get less noise in dependencies. This may be revised later if it is
deemed more important to be systematic.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Update with CHACHA20_POLY1305, CHACHA20. Add in CTR, which was missing,
and move ALG_XTS to its proper location alphabetically.
Signed-off-by: David Brown <david.brown@linaro.org>
PSA defines CBC with no padding, and CBC with PKCS7 padding. The bare
"ALG_CBC" is not defined, so remove this definition.
Signed-off-by: David Brown <david.brown@linaro.org>
Update the psa/crypto_config.h with the newly defined PSA_WANT_
definitions for symmetric ciphers and block modes.
Signed-off-by: David Brown <david.brown@linaro.org>
This brings them in line with PSA Crypto API 1.0.0
PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH -> PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG
PSA_ALG_AEAD_WITH_TAG_LENGTH -> PSA_ALG_AEAD_WITH_SHORTENED_TAG
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
Make sure MBEDTLS_PSA_CRYPTO_CLIENT is defined
when MBEDTLS_PSA_CRYPTO_C is defined and guard
PSA client code only with MBEDTLS_PSA_CRYPTO_CLIENT.
The definition of MBEDTLS_PSA_CRYPTO_CLIENT is done
in crypto_types.h before the definition of
psa_key_attributes_t. That way as PSA crypto client
code is related to key attributes we can be quite
confident that MBEDTLS_PSA_CRYPTO_CLIENT will be
defined when needed.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Attempting to create an ECC key with a curve specification that is not
valid can plausibly fail with PSA_ERROR_INVALID_ARGUMENT ("this is not
a curve specification at all") or PSA_ERROR_NOT_SUPPORTED ("this may
be a curve specification, but not one I support"). The choice of error
is somewhat subjective.
Before this commit, due to happenstance in the implementation, an
attempt to use a curve that is declared in the PSA API but not
implemented in Mbed TLS returned PSA_ERROR_INVALID_ARGUMENT, whereas
an attempt to use a curve that Mbed TLS supports but for which support
was disabled at compile-time returned PSA_ERROR_NOT_SUPPORTED. This
inconsistency made it difficult to write negative tests that could
work whether the curve is implemented via Mbed TLS code or via a
driver.
After this commit, any attempt to use parameters that are not
recognized fails with NOT_SUPPORTED, whether a curve with the
specified size might plausibly exist or not, because "might plausibly
exist" is not something Mbed TLS can determine.
To keep returning INVALID_ARGUMENT when importing an ECC key with an
explicit "bits" attribute that is inconsistent with the size of the
key material, this commit changes the way mbedtls_ecc_group_of_psa()
works: it now works on a size in bits rather than bytes, with an extra
flag indicating whether the bit-size must be exact or not.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
