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Add an EC J-PAKE KDF to transform K -> SHA256(K.X) for TLS 1.2

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TLS uses it to derive the session secret. The algorithm takes a serialized
point in an uncompressed form, extracts the X coordinate and computes
SHA256 of it. It is only expected to work with P-256.
Fixes #5978.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek
2022-07-29 10:00:16 -04:00
parent f6a6a2d815
commit 08d34b8693
7 changed files with 129 additions and 11 deletions
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2
include/psa/crypto_config.h
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@@ -88,6 +88,8 @@
#define PSA_WANT_ALG_STREAM_CIPHER 1
#define PSA_WANT_ALG_TLS12_PRF 1
#define PSA_WANT_ALG_TLS12_PSK_TO_MS 1
#define PSA_WANT_ALG_TLS12_ECJPAKE_TO_PMS 1
/* PBKDF2-HMAC is not yet supported via the PSA API in Mbed TLS.
* Note: when adding support, also adjust include/mbedtls/config_psa.h */
//#define PSA_WANT_ALG_XTS 1