commit 062de7dd79abc0f908925441e46b155824809b0e
author Neil Armstrong <narmstrong@baylibre.com> Fri Mar 18 14:44:37 2022 +0100
committer Neil Armstrong <narmstrong@baylibre.com> Thu Mar 31 15:23:12 2022 +0200
tree c63697ff14ffeebb80617e900ad302ae9f33f5c5
parent 1f4b39621be82cf3a8f5335c212744cbe25c5b4f

Use PSA_BITS_TO_BYTES instead of open-coded calculation in PSA version of ssl_get_ecdh_params_from_cert()

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

library/ssl_tls12_server.c

diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index e96a979..7003647 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -2897,7 +2897,7 @@
             PSA_KEY_TYPE_ECC_KEY_PAIR( ssl->handshake->ecdh_psa_type ) );
     psa_set_key_bits( &key_attributes, ssl->handshake->ecdh_bits );
 
-    key_len = ( key->grp.pbits + 7 ) / 8;
+    key_len = PSA_BITS_TO_BYTES( key->grp.pbits );
     ret = mbedtls_ecp_write_key( key, buf, key_len );
     if( ret != 0 )
         goto cleanup;