Prepare to provide BN_RAND_* flags for BN_rand_range()

ok beck jsing

1 files changed, 12 insertions, 1 deletions

diff --git a/src/lib/libcrypto/bn/bn.h b/src/lib/libcrypto/bn/bn.h
index f03b2c7be7..8fc5e270fc 100644
--- a/src/lib/libcrypto/bn/bn.h
+++ b/src/lib/libcrypto/bn/bn.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: bn.h,v 1.40 2021/09/08 12:19:17 tb Exp $ */
+/* $OpenBSD: bn.h,v 1.41 2021/09/10 09:08:03 tb Exp $ */
 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -231,6 +231,17 @@ extern "C" {
 #define BN_set_flags(b,n)       ((b)->flags|=(n))
 #define BN_get_flags(b,n)       ((b)->flags&(n))
 
+#if defined(LIBRESSL_INTERNAL)
+/* Values for |top| in BN_rand() */
+#define BN_RAND_TOP_ANY    -1
+#define BN_RAND_TOP_ONE     0
+#define BN_RAND_TOP_TWO     1
+
+/* Values for |bottom| in BN_rand() */
+#define BN_RAND_BOTTOM_ANY  0
+#define BN_RAND_BOTTOM_ODD  1
+#endif
+
 /* get a clone of a BIGNUM with changed flags, for *temporary* use only
  * (the two BIGNUMs cannot not be used in parallel!) */
 #define BN_with_flags(dest,b,n)  ((dest)->d=(b)->d, \