BN_copy now propagates BN_FLG_CONSTTIME

[openssl.git] / crypto / bn / bn_lib.c

diff --git a/crypto/bn/bn_lib.c b/crypto/bn/bn_lib.c
index 10b78f5126076f614545d16e618aede4679553c1..f9c65f9f948a91193e9c5d1246ddea4e4958477e 100644 (file)
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -524,6 +524,9 @@ BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
     memcpy(a->d, b->d, sizeof(b->d[0]) * b->top);
 #endif
 
+    if (BN_get_flags(b, BN_FLG_CONSTTIME) != 0)
+        BN_set_flags(a, BN_FLG_CONSTTIME);
+
     a->top = b->top;
     a->neg = b->neg;
     bn_check_top(a);