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From 21ce83b4ae2b9563175fdb4fc4312096cc399cf8 Mon Sep 17 00:00:00 2001
From: David Bauer <mail@david-bauer.net>
Date: Wed, 5 May 2021 00:44:34 +0200
Subject: [PATCH] wolfssl: add RNG to EC key
Since upstream commit 6467de5a8840 ("Randomize z ordinates in
scalar mult when timing resistant") WolfSSL requires a RNG for
the EC key when built hardened which is the default.
Set the RNG for the EC key to fix connections for OWE clients.
Signed-off-by: David Bauer <mail@david-bauer.net>
---
src/crypto/crypto_wolfssl.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/src/crypto/crypto_wolfssl.c
+++ b/src/crypto/crypto_wolfssl.c
@@ -1340,6 +1340,7 @@ int ecc_projective_add_point(ecc_point *
struct crypto_ec {
ecc_key key;
+ WC_RNG rng;
mp_int a;
mp_int prime;
mp_int order;
@@ -1394,6 +1395,8 @@ struct crypto_ec * crypto_ec_init(int gr
return NULL;
if (wc_ecc_init(&e->key) != 0 ||
+ wc_InitRng(&e->rng) != 0 ||
+ wc_ecc_set_rng(&e->key, &e->rng) != 0 ||
wc_ecc_set_curve(&e->key, 0, curve_id) != 0 ||
mp_init(&e->a) != MP_OKAY ||
mp_init(&e->prime) != MP_OKAY ||
@@ -1425,6 +1428,7 @@ void crypto_ec_deinit(struct crypto_ec*
mp_clear(&e->order);
mp_clear(&e->prime);
mp_clear(&e->a);
+ wc_FreeRng(&e->rng);
wc_ecc_free(&e->key);
os_free(e);
}
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