Prepare to provide BN_bn2{,le}binpad() and BN_lebin2bn()

As found by jsg and patrick, this is needed for newer uboot and
will also be used in upcoming elliptic curve work.

This is from OpenSSL 1.1.1l with minor style tweaks.

ok beck inoguchi

1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/libcrypto/bn/bn.h b/src/lib/libcrypto/bn/bn.h
index cc1f467523..f03b2c7be7 100644
--- a/src/lib/libcrypto/bn/bn.h
+++ b/src/lib/libcrypto/bn/bn.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: bn.h,v 1.39 2019/08/25 19:23:59 schwarze Exp $ */
+/* $OpenBSD: bn.h,v 1.40 2021/09/08 12:19:17 tb Exp $ */
 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -428,6 +428,11 @@ BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b);
 void    BN_swap(BIGNUM *a, BIGNUM *b);
 BIGNUM *BN_bin2bn(const unsigned char *s, int len, BIGNUM *ret);
 int     BN_bn2bin(const BIGNUM *a, unsigned char *to);
+#if defined(LIBRESSL_INTERNAL)
+int     BN_bn2binpad(const BIGNUM *a, unsigned char *to, int tolen);
+BIGNUM *BN_lebin2bn(const unsigned char *s, int len, BIGNUM *ret);
+int     BN_bn2lebinpad(const BIGNUM *a, unsigned char *to, int tolen);
+#endif
 BIGNUM *BN_mpi2bn(const unsigned char *s, int len, BIGNUM *ret);
 int     BN_bn2mpi(const BIGNUM *a, unsigned char *to);
 int     BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);