Explicitly export a list of symbols from libcrypto.

Move the "internal" BN functions from bn.h to bn_lcl.h and stop exporting
the bn_* symbols. These are documented as only being intended for internal
use, so why they were placed in a public header is beyond me...

This hides 363 previously exported symbols, most of which exist in headers
that are not installed and were never intended to be public. This also
removes a few crusty old things that should have died long ago (like
_ossl_old_des_read_pw). But don't worry... there are still 3451 symbols
exported from the library.

With input and testing from inoguchi@.

ok beck@ inoguchi@

1 files changed, 3 insertions, 7 deletions

diff --git a/src/lib/libcrypto/ecdh/ech_locl.h b/src/lib/libcrypto/ecdh/ech_locl.h
index 8338007393..b5777df423 100644
--- a/src/lib/libcrypto/ecdh/ech_locl.h
+++ b/src/lib/libcrypto/ecdh/ech_locl.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ech_locl.h,v 1.4 2015/09/13 10:46:20 jsing Exp $ */
+/* $OpenBSD: ech_locl.h,v 1.5 2016/12/21 15:49:29 jsing Exp $ */
 /* ====================================================================
  * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
  *
@@ -58,9 +58,7 @@
 
 #include <openssl/ecdh.h>
 
-#ifdef  __cplusplus
-extern "C" {
-#endif
+__BEGIN_HIDDEN_DECLS
 
 struct ecdh_method {
         const char *name;
@@ -90,8 +88,6 @@ typedef struct ecdh_data_st {
 
 ECDH_DATA *ecdh_check(EC_KEY *);
 
-#ifdef  __cplusplus
-}
-#endif
+__END_HIDDEN_DECLS
 
 #endif /* HEADER_ECH_LOCL_H */