X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fbn%2Fbn_kron.c;h=740359b7520de3609e825801d96a5f41df81ea98;hb=22cd982566135496f6f6f804559dfa45b9a02067;hp=49f75594aed019f26e8c36ff543432daadb5a919;hpb=cd2eebfd6497ac1ca4d450960ba843f14643a9b2;p=oweals%2Fopenssl.git

diff --git a/crypto/bn/bn_kron.c b/crypto/bn/bn_kron.c
index 49f75594ae..740359b752 100644
--- a/crypto/bn/bn_kron.c
+++ b/crypto/bn/bn_kron.c
@@ -53,9 +53,9 @@
  *
  */
 
+#include "cryptlib.h"
 #include "bn_lcl.h"
 
-
 /* least significant word */
 #define BN_lsw(n) (((n)->top == 0) ? (BN_ULONG) 0 : (n)->d[0])
 
@@ -74,6 +74,9 @@ int BN_kronecker(const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
 	 */
 	static const int tab[8] = {0, 1, 0, -1, 0, -1, 0, 1};
 
+	bn_check_top(a);
+	bn_check_top(b);
+
 	BN_CTX_start(ctx);
 	A = BN_CTX_get(ctx);
 	B = BN_CTX_get(ctx);
@@ -172,8 +175,7 @@ int BN_kronecker(const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
 		tmp = A; A = B; B = tmp;
 		tmp->neg = 0;
 		}
-	
- end:
+end:
 	BN_CTX_end(ctx);
 	if (err)
 		return -2;