Commit Graph

884 Commits

Author SHA1 Message Date
Ronald Cron
215633cea4 psa: aead: Implement aead operations as a driver entry point
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-07 16:03:31 +02:00
Ronald Cron
9f31017956 psa: aead: Remove key slot from operation context
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-07 16:03:21 +02:00
Ronald Cron
7dbd800f42 psa: aead: Isolate key slot unlock from operation abort
As we want to do Mbed TLS aead operations as a
driver does, aead operations should not access
the key slot as key slots are not available to
drivers.

Second step in this PR: do not unlock the key slot
as part of operation abort.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-06 09:21:35 +02:00
Ronald Cron
197c2fd0a0 psa: aead: Move key resolution
As we want to do Mbed TLS aead operations as a
driver does, aead operations should not access
the key slot as key slots are not available to
drivers.

First step in this PR: move key resolution from
aead operation setup to psa_aead_encrypt/decrypt
APIs.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-06 09:21:35 +02:00
Ronald Cron
004f917ee8 psa: aead: Fix status initialization
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-06 09:21:35 +02:00
Ronald Cron
6cc6631015 psa: Return in error when requested to copy a key to an opaque driver
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-02 12:27:47 +02:00
Ronald Cron
77e412cd71 psa: Fix error code when creating/registering a key with invalid id
When creating a persistent key or registering a key
with an invalid key identifier return
PSA_ERROR_INVALID_ARGUMENT instead of
PSA_ERROR_INVALID_HANDLE.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-04-01 14:05:41 +02:00
Ronald Cron
5618a39fcf psa: cipher: Remove cipher_generate_iv driver entry point
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>
2021-03-26 15:58:25 +01:00
Ronald Cron
a0d6817838 psa: cipher: Add bound check of the IV length in the core
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 15:58:25 +01:00
Ronald Cron
75e6ae25ef Move mbedtls_cipher_info_from_psa to psa_crypto_cipher.c
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 15:48:13 +01:00
Ronald Cron
1f0db80c78 psa: cipher: Fix symmetric key management
Symmetric key management is not intended to be
delegated to drivers. Thus, key management code
for a given symmetric key type should be included
in the library whether or not the support for
cryptographic operations based on that type of
symmetric key may be delegated to drivers.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 15:48:13 +01:00
Ronald Cron
937dfee92c psa: cipher: Re-organize multi-part operation context
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>
2021-03-26 11:38:40 +01:00
Ronald Cron
49fafa98b1 psa: cipher: Dispatch based on driver identifier
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>
2021-03-26 11:38:40 +01:00
Ronald Cron
06aa442bef psa: cipher: Remove unused key_set operation field
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
dd24c9bbd9 psa: Call cipher operations software implementations as a driver
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
6056fe8a81 psa: driver wrapper: Change cipher_xyz signature
Change the operation context to the PSA one to be
able to call the software implementation from
the driver wrapper later on.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
6d05173359 psa: Add mbedtls_psa_cipher_xyz() APIs
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
0b80559827 psa: Call cipher setup implementation as a driver
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
a4af55f14f psa: driver wrapper: Change cipher_*_setup signatures
Change the signature of
psa_driver_wrapper_cipher_encrypt/decrypt_setup to
that of a PSA driver cipher_encrypt/decrypt_setup
entry point.

Change the operation context to the PSA one to be
able to call the software implementation from
the driver wrapper later on.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
d6d28885f0 psa: Add mbedtls_psa_cipher_encrypt/decrypt_setup functions
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
7986f7e14b psa: Export "internally" mbedtls_cipher_info_from_psa
Export "internally" mbedtls_cipher_info_from_psa to be
able to use it in psa_crypto_cipher.c.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
ab99ac2f33 psa: Rework psa_cipher_setup (2)
Split out the cipher setup based on cipher.c
in psa_cipher_setup_internal() whose signature
is that of a PSA driver cipher_setup entry
point.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
590d3e56e9 psa: Rework psa_cipher_setup (1)
Rework psa_cipher_setup in preparation of
calling the cipher setup based on cipher.c
through the interface of a PSA driver
cipher_setup entry point.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
c45b4afc63 Fix PSA SE driver tests
Fix PSA SE driver tests in configuration
full + MBEDTLS_PSA_CRYPTO_DRIVERS.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-26 11:38:40 +01:00
Ronald Cron
4501c98fc2 psa: sign: Return INVALID_ARGUMENT instead of NOT_SUPPORTED
To run succesfully the test
"PSA sign: invalid algorithm for ECC key" of
test_suite_psa_crypto when ECDSA support is not included
in the library, always return INVALID_ARGUMENT
in case of an ECC key not used for ECDSA, whether
ECDSA support is present or not.

Then apply the same logic to RSA sign RSA and RSA/ECC
verify for the sake of consistency.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-24 12:05:51 +01:00
Ronald Cron
3d471814bc psa: Add missing PSA configs
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>
2021-03-23 16:47:46 +01:00
Gilles Peskine
71f45ba0e8 Fix unused parameter warning in some configurations
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-03-23 14:17:55 +01:00
Gilles Peskine
a1684f42d3 PSA: Reject curves that are not enabled in the PSA configuration
If an elliptic curve was enabled in the Mbed TLS classic API (#define
MBEDTLS_ECP_DP_xxx), but not enabled in the PSA configuration (#define
PSA_WANT_ECC_xxx), it would still work if you tried to use it through
PSA.

This is generally benign, but could be a security issue if you want to
disable a curve in PSA for some security reason (such as a known bug
in its implementation, which may not matter in the classic API if Mbed
TLS is running in a secure enclave and is only reachable from
untrusted callers through the PSA API). More urgently, this broke
test_suite_psa_crypto_not_supported.generated.

So if a curve is not enabled in the PSA configuration, ensure that
it's treated as unsupported through the PSA software implementation.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-03-23 13:12:34 +01:00
Steven Cooreman
b6bf4bbf95 Clear up language on zeroizing driver context at setup
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-15 19:00:14 +01:00
Steven Cooreman
893232fbde Ensure the full driver structure is zeroized at setup
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-15 12:23:37 +01:00
Steven Cooreman
5f88e776c3 Move mbedtls_md_info_from_psa into the mbedtls hash driver
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-15 12:14:40 +01:00
Steven Cooreman
fbe09284cf Set output length to 0 at start of function
This behaviour was present previously, and is depended on by the
test suites.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-15 10:34:56 +01:00
Steven Cooreman
f66d5fd2bd Apply same argument checking as in psa_hash_setup
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-15 10:34:56 +01:00
Steven Cooreman
c8288354a2 move hash update zero-length-input check back into the core
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-10 13:00:25 +01:00
Steven Cooreman
dbf8ceda54 Change the way driver context structures are used
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>
2021-03-10 13:00:25 +01:00
Steven Cooreman
1e58235d8b Dispatch hashing calls through the driver wrapper layer
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-10 13:00:25 +01:00
Steven Cooreman
84d670d20c Make psa_hash_compare go through hash_compute
It's more efficient when dealing with hardware drivers.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-10 13:00:25 +01:00
Steven Cooreman
0e307647e6 Split hashing operations out into an mbedTLS hash driver
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-10 13:00:25 +01:00
Manuel Pégourié-Gonnard
17605f072b
Merge pull request #4151 from ronald-cron-arm/psa-sign_verify-hash
PSA sign and verify hash rework
2021-03-10 10:08:50 +01:00
Steven Cooreman
1fb691aea9 Remove superfluous check
mac size is previously checked to not be less than 4, so it can't be zero
anymore at this point.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-08 14:00:34 +01:00
Steven Cooreman
cd64093222 Language & code readability updates
No functional/behavioral changes in this commit

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-08 14:00:29 +01:00
Ronald Cron
bb9cbc7a23 psa: ecdsa: Prefer NOT_SUPPORTED error code
When ECDSA is not supported by the library, prefer
to return NOT_SUPPORTED than INVALID_ARGUMENT when
asked for an ECDSA signature.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-04 17:43:31 +01:00
Ronald Cron
9103d490e8 psa: ecdsa: Rework deterministic support check
Move the check that ECDSA is supported from the
caller of the function responsible for Mbed TLS
ECDSA signatures to this function, namely
mbedtls_psa_ecdsa_sign_hash().

This makes the caller code more readable and is
more aligned with what is expected from a
sign_hash() PSA driver entry point.

Add a negative test case where a deterministic
ECDSA signature is requested while the library
does not support deterministic ECDSA.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-04 13:32:27 +01:00
Ronald Cron
566899eefa psa: Remove outdated comments
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-03-04 09:52:03 +01:00
Steven Cooreman
31a876da09 Clarify some policy-handling code comments
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-03 20:47:40 +01:00
Steven Cooreman
f9f7fdfe49 Rework MAC algorithm / key type validation
Reworked the validation of MAC algorithm with the used key type by
introducing psa_mac_key_can_do, which guarantees that PSA_MAC_LENGTH can
be called successfully after validation of the algorithm and key type.

This means psa_get_mac_output_length is no longer required.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-03 19:58:02 +01:00
Steven Cooreman
4ff9a29686 Check truncation length explicitly
Comparing algorithm with its FULL_LENGTH_MAC version doesn't work in
cases where algorithm is a wildcard. Wildcard input is not specified in
the documentation of the function, but in order to test the function
using the same test as PSA_MAC_LENGTH we're mimicking that behaviour here.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-03 12:07:20 +01:00
Steven Cooreman
58c94d39ae Make psa_get_mac_output_length testable and test it
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-03 10:37:35 +01:00
Steven Cooreman
7d4b0d778f Reuse PSA_MAC_LENGTH in psa_get_mac_output_length
Avoid code duplication. Also update the guarantees made by the function
doc to match the guarantees given by PSA_MAC_LENGTH.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-02 21:40:03 +01:00
Steven Cooreman
5a17267442 Add a note about why key_type is required
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-02 21:40:03 +01:00
Steven Cooreman
1ac5ce3b91 Make psa_key_policy_algorithm_intersection MAC-length aware
This makes it more in-line with how psa_key_policy_permits works. It
also adds consistency: the intersection of MAC with default length and
MAC with exact-length is now computed correctly in case the exact length
equals the default length of the algorithm when used with the given
key type.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-02 21:39:26 +01:00
Steven Cooreman
15472f8c70 Clean up psa_mac_setup now that we have an output length calculator
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-02 21:36:33 +01:00
Steven Cooreman
5ad4bf75e3 Move MAC default length checking into psa_key_policy_permits
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-02 21:36:33 +01:00
Steven Cooreman
328f11c50e Language & readability touchups
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-02 11:44:51 +01:00
Steven Cooreman
d788fab4ff Clarify usage of psa_key_policy_permits
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:09:24 +01:00
Steven Cooreman
a1d8322f74 Fix typos & copy-paste errors
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:09:24 +01:00
Steven Cooreman
7e39f05929 Using a wildcard as a specific algorithm now reports invalid argument
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:03:40 +01:00
Steven Cooreman
ae3f13bf5e Add more test cases and fix AT_LEAST_THIS_LENGTH against base algorithm
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:03:40 +01:00
Steven Cooreman
d927ed7901 Rename _MINIMUM_LENGTH flags to _AT_LEAST_THIS_LENGTH
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:03:39 +01:00
Steven Cooreman
7de9e2db1f Language / verbiage fixes
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:03:39 +01:00
Steven Cooreman
5d81481a1c Rename AEAD WITH_MINIMUM_LENGTH to AT_LEAST_THIS_LENGTH
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>

# Conflicts:
#	include/psa/crypto_values.h
#	tests/suites/test_suite_psa_crypto.data
2021-03-01 16:00:31 +01:00
Steven Cooreman
caad49316b rename MAC_WITH_MINIMUM_LENGTH_TAG to AT_LEAST_THIS_LENGTH_MAC
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-03-01 16:00:31 +01:00
Steven Cooreman
0348802247 Remove generic wildcard checks after review feedback
Applied specific wildcard checks instead.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>

# Conflicts:
#	library/psa_crypto.c
2021-03-01 16:00:31 +01:00
Steven Cooreman
b3ce8156ce Add support for minimum-tag-length AEAD and MAC policies
Includes tests.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>

# Conflicts:
#	include/psa/crypto_values.h
#	tests/suites/test_suite_psa_crypto.function
2021-03-01 16:00:31 +01:00
Gilles Peskine
34045c1d6a
Merge pull request #4145 from stevew817/fix_return_code
Return NOT_SUPPORTED according to the API contract for psa_key_derivation_setup
2021-03-01 13:20:50 +01:00
Ronald Cron
8a494f3ebd psa: Post move adjustments to psa_sign/verify_hash_internal
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-18 15:45:12 +01:00
Ronald Cron
072722ccb0 psa: Move ECDSA sign/verify to PSA ECP specific file
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-18 15:45:12 +01:00
Ronald Cron
d1cb91c603 psa: Change psa_ecdsa_sign/verify signature
Change psa_ecdsa_sign/verify signature to that of
a sign/verify_hash driver entry point before to
move them to the psa_crypto_ecp.c ECP specific file.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-18 15:45:12 +01:00
Ronald Cron
7bdbca33b2 psa: Move RSA sign/verify hash to the PSA RSA specific file
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:52:26 +01:00
Ronald Cron
a99bcc0e17 psa: Change psa_rsa_sign/verify signature
Change psa_rsa_sign/verify signature to that of
a sign/verify_hash driver entry point before to
move them to the psa_crypto_rsa.c RSA specific file.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:52:26 +01:00
Ronald Cron
fce9df2cad psa: Call sign/verify hash software implementation as a driver
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:52:24 +01:00
Ronald Cron
36f641bd16 psa: Export "internally" mbedtls_md_info_from_psa()
Export mbedtls_md_info_from_psa() from psa_crypto.c
to make it available to psa_crypto_rsa/ecp.c.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:51:46 +01:00
Ronald Cron
67b1eb309b psa: Export "internally" psa_sign/verify_hash_internal
Export psa_sign/verify_hash_internal from psa_crypto.c
to make it available to the driver wrapper.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:51:46 +01:00
Ronald Cron
9f17aa48c2 psa: Change psa_driver_wrapper_sign/verify_hash signature
Change psa_driver_wrapper_sign/verify_hash signature
to that of a sign/verify_hash driver entry point.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:51:43 +01:00
Ronald Cron
1865993763 psa: sign/verify_hash: Wrap software implementation
Wrap sign/verify_hash software implementation into
psa_sign/verify_hash_internal() functions whose
signature is that of a sign/verify_hash driver
entry point.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:50:19 +01:00
Ronald Cron
99b8ed7fda psa: Prepare sign/verify code for software implementation split
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-17 10:46:07 +01:00
David Brown
1bfe4d7fca Use new PSA builtin defines for CHACHA20
Change the psa_crypto use of the CHACHA20 cipher to also use the new
MBEDTLS_PSA_BUILTIN_KE_TYPE_CHACHA20.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:26:57 -07:00
David Brown
8107e31b74 Fix 2 endif comments
Two endif comments didn't match the ifdef.  Fix these to match.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:26:56 -07:00
David Brown
12ca50307f Change some conditionals of PSA to use BUILTIN
Change a few conditionals in the psa library to be based on the
MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES instead of the WANT macros.  Future
additions of HW acceleration will need to be mindful of these
definitions if any of this code is needed in those instances.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:26:20 -07:00
David Brown
7807bf7404 Use proper conditional for software DES
When converting definitions to use the new PSA defines, one erroneously
was conditionalized on the WANT macro instead of on the BUILTIN macro.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:25:34 -07:00
David Brown
288a96e169 Fix mistyped endif comment
Correct the endif comment to match the condition used in the ifdef.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:25:34 -07:00
David Brown
0baa7b5e98 Change ifdefs in psa_crypto.c to new WANT macros
There are a few instances of MBEDTLS_*_C (specifically for DES) in
psa_crypto.c.  Change to the PSA_WANT_KEY_TYPE_DES macros to reflect the
new PSA crypto config.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:25:32 -07:00
David Brown
63ca260827 Change psa_crypto.c ifdefs for cipher modes
Change to use the MBEDTLS_PSA_BUILTIN... macros defined by the cipher
modes.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:24:19 -07:00
David Brown
e04acc271c Use PSA definitions in PSA file
This file will always be used with the PSA configurations, so use the
MBEDTLS_PSA_BUILTIN... definitions for the symmetric cyphers.

Signed-off-by: David Brown <david.brown@linaro.org>
2021-02-16 13:24:19 -07:00
Ronald Cron
d81ab56c84 psa: Avoid empty block
Avoid empty block to ease maintenance.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:07:46 +01:00
Ronald Cron
3772afef0f psa: key generation: Use PSA_EXPORT_KEY_OUTPUT_SIZE
Use PSA_EXPORT_KEY_OUTPUT_SIZE macro to compute the
size of the buffer to contain the generated key
instead of computing it alongside the key type and
size validation.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:07:46 +01:00
Ronald Cron
7023db5273 Move ECP key generation code to the PSA ECP specific C file
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:07:46 +01:00
Ronald Cron
9e18fc1cf9 Move RSA key generation code to the PSA RSA specific C file
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
977c247048 Call software implementation as a driver
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
5c4d38639d psa: Extend psa_get_key_buffer_size scope
When generating transparent keys, we need to be able
to compute the size of the key buffer whether the
key is generated by the Mbed TLS library or by an
accelerator. Thus, change the RSA/ECP
MBEDTLS_PSA_BUILTIN_... compilation guards with
their PSA_WANT_... counterparts.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
55ed0591c8 Export "internally" psa_generate_key_internal()
Export psa_generate_key_internal() to make it
available to the driver wrapper.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
2a38a6b98f Change psa_generate_key_internal() signature
Change psa_generate_key_internal() signature to
that of a PSA driver generate_key entry point.

That way, this function can be called by the
driver wrapper when a software fallback is
necessary.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
2b56bc84f5 Move key buffer allocation out of psa_generate_key_internal()
Preparatory commit to eventually change
psa_generate_key_internal() signature to that of
a PSA driver generate_key entry point.

To be able to change the signature, the buffer to
store the generated key has to be allocated before
the call to psa_generate_key_internal().

This commit moves the allocation and clean-up in
case of error of the buffer to store the generated
key from psa_generate_key_internal() to
psa_generate_key().

This has the nice benefit of factorizing the key
buffer allocation and clean-up.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
01b2aba924 Move key buffer size computation out of psa_generate_key_internal()
Preparatory commit to eventually change
psa_generate_key_internal() signature to that of
a PSA driver generate_key entry point.

To be able to change the signature, the buffer to
store the key has to be allocated before the call
to psa_generate_key_internal() thus its size has
to be calculed beforehand as well.

This is the purpose of this commit: to move the
computation of the key size in bytes out of
psa_generate_key_internal().

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:50 +01:00
Ronald Cron
f3bb761c00 Improve psa_generate_key_internal()
Small improvements to psa_generate_key_internal()
implementation:
. declare only once the status local variable and
  initialize it to PSA_ERROR_CORRUPTION_DETECTED
  to improve robustness against FI attacks.
. remove an unnecessary assignment.
. use type local variable instead of its global
  variable equivalent.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-02-16 09:04:49 +01:00
Steven Cooreman
932ffb7ab2 Return NOT_SUPPORTED according to the API contract
"retval = PSA_ERROR_NOT_SUPPORTED if alg is not supported"

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
2021-02-15 12:19:53 +01:00
Gilles Peskine
59ad77032f
Merge pull request #4131 from paul-elliott-arm/fix_crypto_leak
Fix memory leak in error case in psa_crypto
2021-02-15 11:38:13 +01:00
Gilles Peskine
9d5abfed8b
Merge pull request #4137 from stevew817/fix/unused_argument_warnings
Fix/unused argument warnings
2021-02-15 11:20:58 +01:00
Ronald Cron
5cd00d28bf
Merge pull request #4092 from ronald-cron-arm/psa-crypto-client
Psa crypto client
2021-02-15 10:46:35 +01:00
Bence Szépkúti
a63b20d28b Rename AEAD tag length macros
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>
2021-02-11 11:39:31 +01:00