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, 2 insertions, 6 deletions

diff --git a/lib/libcrypto/constant_time_locl.h b/lib/libcrypto/constant_time_locl.h
index f8f0eae7ea3..2cabfb460e6 100644
--- a/lib/libcrypto/constant_time_locl.h
+++ b/lib/libcrypto/constant_time_locl.h
@@ -47,9 +47,7 @@
 #ifndef HEADER_CONSTANT_TIME_LOCL_H
 # define HEADER_CONSTANT_TIME_LOCL_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+__BEGIN_HIDDEN_DECLS
 
 /*-
  * The boolean methods return a bitmask of all ones (0xff...f) for true
@@ -202,8 +200,6 @@ static inline int constant_time_select_int(unsigned int mask, int a, int b)
     return (int)(constant_time_select(mask, (unsigned)(a), (unsigned)(b)));
 }
 
-#ifdef __cplusplus
-}
-#endif
+__END_HIDDEN_DECLS
 
 #endif                          /* HEADER_CONSTANT_TIME_LOCL_H */