Drop bn is zero special case

This is a corner case that isn't really of interest. We're making a few
calculations that don't really hurt, but it's super cheap, so one more
complication bites the dust.

ok jsing

1 files changed, 1 insertions, 5 deletions

diff --git a/src/lib/libcrypto/ec/ec_mult.c b/src/lib/libcrypto/ec/ec_mult.c
index 382174a367..c33a033805 100644
--- a/src/lib/libcrypto/ec/ec_mult.c
+++ b/src/lib/libcrypto/ec/ec_mult.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ec_mult.c,v 1.49 2024/11/23 07:33:26 tb Exp $ */
+/* $OpenBSD: ec_mult.c,v 1.50 2024/11/23 07:37:21 tb Exp $ */
 /*
  * Originally written by Bodo Moeller and Nils Larsch for the OpenSSL project.
  */
@@ -111,9 +111,6 @@ ec_compute_wNAF(const BIGNUM *bn, signed char **out_wNAF, size_t *out_wNAF_len,
         wbits = ec_window_bits(bn);
         len = 1 << (wbits - 1);
 
-        if (BN_is_zero(bn))
-                goto done;
-
         sign = BN_is_negative(bn) ? -1 : 1;
 
         bit = 1 << wbits;
@@ -150,7 +147,6 @@ ec_compute_wNAF(const BIGNUM *bn, signed char **out_wNAF, size_t *out_wNAF_len,
                 window += bit * BN_is_bit_set(bn, i + wbits + 1);
         }
 
- done:
         *out_wNAF = wNAF;
         wNAF = NULL;
         *out_wNAF_len = wNAF_len;