[review] ta: pkcs11: update to mbedTLS 3.4.0 API

Supply the mandatory f_rng() parmeter to mbedtls_ecp_mul() and
mbedtls_pk_parse_key().

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

ta/pkcs11/src/pkcs11_attributes.c

@@ -906,6 +906,12 @@ static enum pkcs11_rc create_priv_key_attributes(struct obj_attrs **out,
 	return set_attributes_opt_or_null(out, temp, oon, oon_count);
 }
 
+static int mbd_rand(void *rng_state __unused, unsigned char *output, size_t len)
+{
+	if (crypto_rng_read(output, len))
+		return MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED;
+	return 0;
+}
 static enum pkcs11_rc
 create_ec_priv_key_hidden_attributes(struct obj_attrs **out,
 				     struct obj_attrs *temp,
@@ -1000,7 +1006,7 @@ create_ec_priv_key_hidden_attributes(struct obj_attrs **out,
 	}
 
 	ret = mbedtls_ecp_mul(&key_pair_grp, &key_pair_Q, &key_pair_d,
-			      &key_pair_grp.G, NULL, NULL);
+			      &key_pair_grp.G, mbd_rand, NULL);
 	if (ret) {
 		EMSG("Failed to create public key");
 		goto out;
@@ -2512,7 +2518,7 @@ static enum pkcs11_rc set_private_key_data_rsa(struct obj_attrs **head,
 	mbedtls_mpi_init(&q);
 
 	mbedtls_rc = mbedtls_pk_parse_key(&pk, data, key_size,
-					  NULL, 0, NULL, 0);
+					  NULL, 0, mbd_rand, NULL);
 	if (mbedtls_rc) {
 		rc = PKCS11_CKR_ARGUMENTS_BAD;
 		goto out;