package/network/services/hostapd/patches/802-wolfssl-init-RNG-with-ECC-key.patch

   1 From 21ce83b4ae2b9563175fdb4fc4312096cc399cf8 Mon Sep 17 00:00:00 2001
   2 From: David Bauer <mail@david-bauer.net>
   3 Date: Wed, 5 May 2021 00:44:34 +0200
   4 Subject: [PATCH] wolfssl: add RNG to EC key
   5
   6 Since upstream commit 6467de5a8840 ("Randomize z ordinates in
   7 scalar mult when timing resistant") WolfSSL requires a RNG for
   8 the EC key when built hardened which is the default.
   9
  10 Set the RNG for the EC key to fix connections for OWE clients.
  11
  12 Signed-off-by: David Bauer <mail@david-bauer.net>
  13 ---
  14  src/crypto/crypto_wolfssl.c | 4 ++++
  15  1 file changed, 4 insertions(+)
  16
  17 --- a/src/crypto/crypto_wolfssl.c
  18 +++ b/src/crypto/crypto_wolfssl.c
  19 @@ -1303,6 +1303,7 @@ int ecc_projective_add_point(ecc_point *
  20
  21  struct crypto_ec {
  22         ecc_key key;
  23 +       WC_RNG rng;
  24         mp_int a;
  25         mp_int prime;
  26         mp_int order;
  27 @@ -1357,6 +1358,8 @@ struct crypto_ec * crypto_ec_init(int gr
  28                 return NULL;
  29
  30         if (wc_ecc_init(&e->key) != 0 ||
  31 +           wc_InitRng(&e->rng) != 0 ||
  32 +           wc_ecc_set_rng(&e->key, &e->rng) != 0 ||
  33             wc_ecc_set_curve(&e->key, 0, curve_id) != 0 ||
  34             mp_init(&e->a) != MP_OKAY ||
  35             mp_init(&e->prime) != MP_OKAY ||
  36 @@ -1388,6 +1391,7 @@ void crypto_ec_deinit(struct crypto_ec*
  37         mp_clear(&e->order);
  38         mp_clear(&e->prime);
  39         mp_clear(&e->a);
  40 +       wc_FreeRng(&e->rng);
  41         wc_ecc_free(&e->key);
  42         os_free(e);
  43  }