1/*	$NetBSD: ntp_md5.h,v 1.9 2020/05/25 20:47:19 christos Exp $	*/
2
3/*
4 * ntp_md5.h: deal with md5.h headers
5 *
6 * Use the system MD5 if available, otherwise libisc's.
7 */
8#ifndef NTP_MD5_H
9#define NTP_MD5_H
10
11#ifdef OPENSSL
12# include <openssl/evp.h>
13# include "libssl_compat.h"
14# ifdef HAVE_OPENSSL_CMAC_H
15#  include <openssl/cmac.h>
16#  define CMAC                  "AES128CMAC"
17#  define AES_128_KEY_SIZE      16
18# endif /*HAVE_OPENSSL_CMAC_H*/
19#else	/* !OPENSSL follows */
20/*
21 * Provide OpenSSL-alike MD5 API if we're not using OpenSSL
22 */
23# if defined HAVE_MD5_H && defined HAVE_MD5INIT
24#  include <md5.h>
25# else
26#  include "isc/md5.h"
27   typedef isc_md5_t		MD5_CTX;
28#  define MD5Init(c)		isc_md5_init(c)
29#  define MD5Update(c, p, s)	isc_md5_update(c, p, s)
30#  define MD5Final(d, c)	isc_md5_final((c), (d))	/* swapped */
31# endif
32
33  typedef MD5_CTX			EVP_MD_CTX;
34
35# define EVP_MD_CTX_free(c)		free(c)
36# define EVP_MD_CTX_new()		calloc(1, sizeof(MD5_CTX))
37# define EVP_get_digestbynid(t)		NULL
38# define EVP_md5()			NULL
39# define EVP_MD_CTX_init(c)
40# define EVP_MD_CTX_set_flags(c, f)
41# define EVP_DigestInit(c, dt)		(MD5Init(c), (dt ? 1 : 1))
42# define EVP_DigestInit_ex(c, dt, i)	(MD5Init(c), (dt ? 1 : 1))
43# define EVP_DigestUpdate(c, p, s)	MD5Update(c, (const void *)(p), \
44						  s)
45# define EVP_DigestFinal(c, d, pdl)	\
46	do {				\
47		MD5Final((d), (c));	\
48		*(pdl) = 16;		\
49	} while (0)
50# endif	/* !OPENSSL */
51#endif	/* NTP_MD5_H */
52