#ifndef HEADER_ENVELOPE_H
# define HEADER_ENVELOPE_H
-# ifdef OPENSSL_ALGORITHM_DEFINES
-# include <openssl/opensslconf.h>
-# else
-# define OPENSSL_ALGORITHM_DEFINES
-# include <openssl/opensslconf.h>
-# undef OPENSSL_ALGORITHM_DEFINES
-# endif
-
+# include <openssl/opensslconf.h>
# include <openssl/ossl_typ.h>
-
# include <openssl/symhacks.h>
-
# include <openssl/bio.h>
# define EVP_MAX_MD_SIZE 64/* longest known is SHA512 */