Commit Graph

1620 Commits

Author SHA1 Message Date
Glenn Strauss
60bfe60d0f mbedtls_ssl_ciphersuite_t min_tls_version,max_tls_version
Store the TLS version in tls_version instead of major, minor version num

Note: existing application use which accesses the struct member
(using MBEDTLS_PRIVATE) is not compatible, as the struct is now smaller.

Reduce size of mbedtls_ssl_ciphersuite_t

members are defined using integral types instead of enums in
order to pack structure and reduce memory usage by internal
ciphersuite_definitions[]

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-04-14 15:40:12 -04:00
Glenn Strauss
2dfcea2b9d mbedtls_ssl_config min_tls_version, max_tls_version
Store the TLS version in tls_version instead of major, minor version num

Note: existing application use which accesses the struct member
(using MBEDTLS_PRIVATE) is not compatible on little-endian platforms,
but is compatible on big-endian platforms.  For systems supporting
only TLSv1.2, the underlying values are the same (=> 3).

New setter functions are more type-safe,
taking argument as enum mbedtls_ssl_protocol_version:
mbedtls_ssl_conf_max_tls_version()
mbedtls_ssl_conf_min_tls_version()

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-04-14 15:39:43 -04:00
Glenn Strauss
da7851c825 Rename mbedtls_ssl_session minor_ver to tls_version
Store the TLS version instead of minor version number in tls_version.

Note: struct member size changed from unsigned char to uint16_t
Due to standard structure padding, the structure size does not change
unless alignment is 1-byte (instead of 2-byte or more)

Note: existing application use which accesses the struct member
(using MBEDTLS_PRIVATE) is compatible on little-endian platforms,
but not compatible on big-endian platforms.  The enum values for
the lower byte of MBEDTLS_SSL_VERSION_TLS1_2 and of
MBEDTLS_SSL_VERSION_TLS1_3 matches MBEDTLS_SSL_MINOR_VERSION_3 and
MBEDTLS_SSL_MINOR_VERSION_4, respectively.

Note: care has been taken to preserve serialized session format,
which uses only the lower byte of the TLS version.

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-04-14 15:23:57 -04:00
Glenn Strauss
07c641605e Rename mbedtls_ssl_transform minor_ver to tls_version
Store the TLS version in tls_version instead of minor version number.

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-04-14 15:23:54 -04:00
Glenn Strauss
dff84620a0 Unify internal/external TLS protocol version enums
Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-04-14 13:45:20 -04:00
Neil Armstrong
f3f46416e3 Remove ecdh_ctx variable, init & free when USE_PSA_CRYPTO isn't selected
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-04-12 14:43:39 +02:00
Neil Armstrong
a33a255dcf Disable non-PSA ECDHE code in mbedtls_ssl_psk_derive_premaster() when USE_PSA_CRYPTO is selected
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-04-12 14:40:47 +02:00
Glenn Strauss
236e17ec26 Introduce mbedtls_ssl_hs_cb_t typedef
Inline func for mbedtls_ssl_conf_cert_cb()

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-04-07 14:18:30 -04:00
Manuel Pégourié-Gonnard
1b05aff3ad
Merge pull request #5624 from superna9999/5312-tls-server-ecdh
TLS ECDH 3b: server-side static ECDH (1.2)
2022-04-07 11:46:25 +02:00
Neil Armstrong
f716a700a1 Rename mbedtls_ssl_handshake_params variable ecdh_psa_shared_key to ecdh_psa_privkey_is_external
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-04-04 11:23:46 +02:00
Ronald Cron
0e980e8e84
Merge pull request #5640 from ronald-cron-arm/version-negotiation-2
TLS 1.2/1.3 version negotiation - 2
2022-04-01 12:29:06 +02:00
Manuel Pégourié-Gonnard
33a9d61885
Merge pull request #5638 from paul-elliott-arm/ssl_cid_accessors
Accessors to own CID within mbedtls_ssl_context
2022-04-01 11:36:00 +02:00
Manuel Pégourié-Gonnard
451114fe42
Merge pull request #5647 from superna9999/5179-follow-up-tls-record-hmac-no-mdinfo
Remove md_info in ssl_tls12_populate_transform() when USE_PSA_CRYPTO is defined
2022-04-01 10:04:56 +02:00
Paul Elliott
0113cf1022 Add accessor for own cid to ssl context
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
2022-03-31 19:21:41 +01:00
Neil Armstrong
8113d25d1e Add ecdh_psa_shared_key flag to protect PSA privkey if imported
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-03-31 15:24:17 +02:00
Ronald Cron
a980adf4ce
Merge pull request #5637 from ronald-cron-arm/version-negotiation-1
TLS 1.2/1.3 version negotiation - 1
2022-03-31 11:47:16 +02:00
Ronald Cron
1fa4f6863b ssl_tls.c: Return in error if default config fails
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-31 09:27:35 +02:00
Ronald Cron
37bdaab64f tls: Simplify the logic of the config version check and test it
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-31 09:26:58 +02:00
Neil Armstrong
e451295179 Remove md_info in ssl_tls12_populate_transform() when USE_PSA_CRYPTO is defined
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-03-30 16:41:12 +02:00
Manuel Pégourié-Gonnard
3304f253d7
Merge pull request #5653 from paul-elliott-arm/handshake_over
Add mbedtls_ssl_is_handshake_over()
2022-03-30 12:16:40 +02:00
Ronald Cron
f660655b84 TLS: Allow hybrid TLS 1.2/1.3 in default configurations
This implies that when both TLS 1.2 and TLS 1.3
are included in the build all the TLS 1.2 tests
using the default configuration now go through
a version negotiation on the client side.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 18:58:31 +02:00
Ronald Cron
e71639d39b Simplify TLS major version default value setting
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 18:58:31 +02:00
Ronald Cron
9f0fba374c Add logic to switch to TLS 1.2
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 18:58:31 +02:00
Ronald Cron
e1d3f06399 Allow hybrid TLS 1.3 + TLS 1.2 configuration
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 18:58:31 +02:00
Ronald Cron
fbd9f99f10 ssl_tls.c: Move some client specific functions to ssl_client.c
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 18:58:31 +02:00
Ronald Cron
27c85e743f ssl_tls.c: Unify TLS 1.2 and TLS 1.3 SSL state logs
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 18:58:31 +02:00
Ronald Cron
8f6d39a81d Make some handshake TLS 1.3 utility routines available for TLS 1.2
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
086ee0be0e ssl_tls.c: Reject TLS 1.3 version configuration for server
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
a25cf58681 ssl_tls.c: Remove one unnecessary minor version check
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
c2f13a0568 ssl_tls.c: Modify mbedtls_ssl_set_calc_verify_md()
Modify mbedtls_ssl_set_calc_verify_md() taking into
account that it is an TLS 1.2 only function.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
4dcbca952e ssl_tls.c: Move mbedtls_ssl_set_calc_verify_md() to TLS 1.2 section
In ssl_tls.c, move mbedtls_ssl_set_calc_verify_md() under the
"if defined(MBEDTLS_SSL_PROTO_TLS1_2)" pre-processor directive
as it is specific to TLS 1.2.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
81591aa0f3 ssl_tls.c: Remove ssl_set_handshake_prfs unnecessary minor_ver param
ssl_set_handshake_prfs() is TLS 1.2 specific and only called
from TLS 1.2 only code thus no need to pass the TLS minor
version of the currebt session.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
f12b81d387 ssl_tls.c: Fix PSA ECDH private key destruction
In TLS 1.3, a PSA ECDH private key may be created
even if MBEDTLS_SSL_USA_PSA_CRYPTO is disabled. We
must destroy this key if still referenced by an
handshake context when we free such context.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Ronald Cron
8540cf66ac ssl_tls.c: Propose PKCS1 v1.5 signatures with SHA_384/512
In case of TLS 1.3 and hybrid TLS 1.2/1.3, propose
PKCS1 v1.5 signatures with SHA_384/512 not only
SHA_256. There is no point in not proposing them
if they are available.

In TLS 1.3 those could be useful for certificate
signature verification.

In hybrid TLS 1.2/1.3 this allows to propose for
TLS 1.2 the same set of signature algorithms.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-29 14:42:17 +02:00
Manuel Pégourié-Gonnard
39f2f73e69
Merge pull request #5630 from ronald-cron-arm/restore-full-compat-testing
Restore full TLS compatibility testing
2022-03-28 18:31:17 +02:00
Ronald Cron
fb39f15fa1 ssl_tls.c: Use ETM status only in CBC mode case
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-25 16:50:18 +01:00
XiaokangQian
9b93c0dd8d Change cookie parameters for dtls and tls 1.3
Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
2022-03-25 07:50:56 +00:00
Paul Elliott
27b0d94e25 Use mbedtls_ssl_is_handshake_over()
Switch over to using the new function both internally and in tests.

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
2022-03-24 14:43:52 +00:00
Manuel Pégourié-Gonnard
f4042f076b
Merge pull request #5573 from superna9999/5176-5177-5178-5179-tsl-record-hmac
TLS record HMAC
2022-03-21 11:36:44 +01:00
Ronald Cron
8d7afc642c
Merge pull request #5523 from ronald-cron-arm/one-flush-output-development
TLS 1.3: One flush output
2022-03-21 08:44:04 +01:00
Neil Armstrong
29c0c040fc Only make PSA HMAC key exportable when NULL or CBC & not EtM in ssl_tls12_populate_transform()
This requires moving the HMAC init after CIPHER init.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-03-18 11:10:09 +01:00
Ronald Cron
3f20b77517 Improve comment
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-09 07:51:52 +01:00
Ronald Cron
66dbf9118e TLS 1.3: Do not send handshake data in handshake step handlers
Send data (call to mbedtls_ssl_flush_output()) only from
the loop over the handshake steps. That way, we do not
have to take care of the partial writings (MBEDTLS_ERR_SSL_WANT_WRITE
error code) on the network in handshake step handlers.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-03-09 07:51:52 +01:00
Neil Armstrong
6828d8fdc4 Return MBEDTLS_ERR_SSL_BAD_INPUT_DATA if MAC algorithm isn't supported in ssl_tls.c
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-03-02 15:37:11 +01:00
Neil Armstrong
321116c755 Remove spurious debug in ssl_tls12_populate_transform()
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-03-02 15:06:15 +01:00
Glenn Strauss
6989407261 Add accessor to retrieve SNI during handshake
Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-02-25 19:55:53 -05:00
Glenn Strauss
36872dbd0b Provide means to reset handshake cert list
Extend mbedtls_ssl_set_hs_own_cert() to reset handshake cert list
if cert provided is null.  Previously, mbedtls_ssl_set_hs_own_cert()
only provided a way to append to the handshake certificate list,
without providing a way to replace the handshake certificate list.

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-02-25 19:55:48 -05:00
Glenn Strauss
2ed95279c0 Add server certificate selection callback
https://github.com/ARMmbed/mbedtls/issues/5430

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
2022-02-25 17:31:49 -05:00
Neil Armstrong
e858996413 Use PSA version of mbedtls_ct_hmac() in mbedtls_ssl_decrypt_buf()
Due to mbedtls_ct_hmac() implementation the decryption MAC key
must be exportable.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-02-25 15:17:50 +01:00
Neil Armstrong
cf8841a076 Remove non-PSA MAC keys in mbedtls_ssl_transform when MBEDTLS_USE_PSA_CRYPTO is defined
Also remove last usage of non-PSA MAC keys in ssl_decrypt_non_etm_cbc() SSL test.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-02-25 15:16:49 +01:00
Neil Armstrong
0760ade761 Setup & Import HMAC keys in ssl_tls12_populate_transform()
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-02-25 15:16:49 +01:00
Neil Armstrong
39b8e7dde4 Add, Initialize & Free HMAC keys in mbedtls_ssl_transform
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2022-02-23 09:24:57 +01:00
Gilles Peskine
c63a1e0e15 Fix mbedtls_ssl_get_version() for TLSv1.3
Test it in ssl-opt.sh.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2022-02-21 15:14:01 +01:00
Gilles Peskine
e1a0c25f71 New function to access the TLS version from a context as an enum
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2022-02-21 15:14:01 +01:00
Jerry Yu
f1b23caa4e move wrong comments
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
18621dfd23 remove extra empty line
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
50f2f703a7 remove extra guards
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
840fbb2817 guards populate_transform reference
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
4f9e3efbeb move session_save/load_tls12
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
d9d91da7c7 move sig_hash_*
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
ee40f9d4b3 move get_key_exchange_md_tls12
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
9bccc4c63f move populate_transform
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
e93ffcd2c7 move tls_prf_get_type
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
392112c058 move tls12prf_from_cs
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
0b3d7c1ea1 move parse_finished
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
3c8e47bbbf move write_finished
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
2a9fff571d move wrapup
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
aef0015ba0 move wrapup_free_hs_transform
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
b7ba49ef74 move calc_finished_tls_sha384
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
615bd6f5b9 move calc_finished_tls_sha256
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
d952669ad8 move write_certificate
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
c2c673da59 move resend_hello_request
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
ce3dca4175 move psk_derive_premaster
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
c1cb384708 move calc_verify_tls_sha384
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
8392e0dae4 move calc_verify_tls_sha256
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
d62f87e151 move derive_keys
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
2a7b5ac791 move compute_master
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
d6ab235972 move use_opaque_psk
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
f009d86186 move set_handshake_prfs
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
dc7bd17d11 move tls_prf_sha256/384
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
ed14c93008 add static prototypes
prepare for moving functions

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:01 +08:00
Jerry Yu
53d23e2c95 Guards tls_prf functions with TLS1_2
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Jerry Yu
c73c618094 Wrap function not used by test_tls13_only
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>

# Conflicts:
#	library/ssl_tls13_generic.c
2022-02-21 09:06:00 +08:00
Jerry Yu
bef175db96 Wrap derive_keys with TLS1_2 option
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Jerry Yu
db8c48aaff tls13_only:Remove unnecessary functions
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Jerry Yu
7d2396332d fix wrong setting of max_minor version
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Jerry Yu
c5aef88be6 tls13_only: guard ssl_{cli,srv}.c with TLS1_2
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Jerry Yu
c10f6b4735 tls13_only: simple test pass
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Jerry Yu
c3091b1c8c tls13_only: compile pass
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2022-02-21 09:06:00 +08:00
Manuel Pégourié-Gonnard
3d1f8b9c00
Merge pull request #5532 from ronald-cron-arm/tls13_and_use_psa_crypto
Make TLS 1.3 compatible with MBEDTLS_USE_PSA_CRYPTO
2022-02-16 17:33:47 +01:00
Ronald Cron
b788c044b7 Use PSA status to Mbed TLS error code conversion function
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-02-15 09:14:15 +01:00
Manuel Pégourié-Gonnard
e14b644f4d
Merge pull request #5456 from mpg/cleanup-ecdh-psa
Cleanup PSA-based ECDHE in TLS 1.2
2022-02-15 09:09:07 +01:00
Ronald Cron
f6893e11c7 Finalize PSA hash operations in TLS 1.3
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2022-02-11 16:10:34 +01:00
Manuel Pégourié-Gonnard
62b49cd06a
Merge pull request #5472 from yuhaoth/pr/move-client-auth
Move client_auth to handshake
2022-02-09 10:57:00 +01:00
Ronald Cron
6ca6faa67e
Merge pull request #5080 from xffbai/add-tls13-read-certificate-request
add tls1_3 read certificate request
2022-02-09 09:51:55 +01:00
Xiaofei Bai
c234ecf695 Update mbedtls_ssl_handshake_free() and address review comments.
Signed-off-by: Xiaofei Bai <xiaofei.bai@arm.com>
2022-02-08 10:26:42 +00:00
Xiaofei Bai
51f515a503 update based on comments
Signed-off-by: Xiaofei Bai <xiaofei.bai@arm.com>
2022-02-08 07:28:04 +00:00
Manuel Pégourié-Gonnard
422370d633 Improve a comment and fix some whitespace
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2022-02-07 11:55:21 +01:00
Przemyslaw Stekiel
6928a5164d Compile mbedtls_ssl_cipher_to_psa() conditionally under MBEDTLS_USE_PSA_CRYPTO only
Signed-off-by: Przemyslaw Stekiel <przemyslaw.stekiel@mobica.com>
2022-02-03 14:55:24 +01:00
Manuel Pégourié-Gonnard
0d63b84fa4 Add mbedtls_ssl_check_curve_tls_id() (internal)
This can be used to validate the server's choice of group in the PSA
case (this will be done in the next commit).

Note that new function doesn't depend on ECP_C, as it only requires
mbedtls_ssl_get_groups(), which is always available. As a general rule,
functions for defining and enforcing policy in the TLS module should not
depend on low-level modules but work with TLS-level identifiers are much
as possible, and this new function follows that principle.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2022-02-03 11:08:15 +01:00