Make BN_num_bits() independent of bn->top.

Provide bn_bitsize(), which performs a constant time scan of a BN in order
to determine the bit size of the BN value. Use this for BN_num_bits() such
that it is no longer dependent on the bn->top value.

ok tb@

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libcrypto/Makefile b/src/lib/libcrypto/Makefile
index 89bd94d79a..6fe129bcdd 100644
--- a/src/lib/libcrypto/Makefile
+++ b/src/lib/libcrypto/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.130 2023/06/11 05:35:43 tb Exp $
+# $OpenBSD: Makefile,v 1.131 2023/06/21 07:41:55 jsing Exp $
 
 LIB=    crypto
 LIBREBUILD=y
@@ -195,6 +195,7 @@ SRCS+= bn_mod_sqrt.c
 SRCS+= bn_mont.c
 SRCS+= bn_mul.c
 SRCS+= bn_prime.c
+SRCS+= bn_primitives.c
 SRCS+= bn_rand.c
 SRCS+= bn_recp.c
 SRCS+= bn_shift.c