commit fa1e04a7c4cfcd9f31b70096487b3fe7d2079a29
author Ronald Cron <ronald.cron@arm.com> Mon Oct 17 09:04:59 2022 +0200
committer Ronald Cron <ronald.cron@arm.com> Fri Oct 21 14:34:20 2022 +0200
tree 149d5ff1c3e302afee3778f3f71cc9f0c800807d
parent 9a6a49c7cba1f20d2121b6d14b8ede104e79da6a

tls13: keys: Fix PSK build only case

When deriving the handshake stage master
secret, in the case of a PSK only build,
the only possible key exchange mode is PSK
and there is no ephemeral key exchange
shared secret in that case. Thus do not
error out in that case in the first
phae of the derivation dedicated to the
shared secret.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>

library/ssl_tls13_keys.c

diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 897541b..2209dd1 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -1310,8 +1310,6 @@
             return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
         }
     }
-#else
-    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDHE_ENABLED */
 
     /*