1/*
2 * ntp_md5.h: deal with md5.h headers
3 *
4 * Use the system MD5 if available, otherwise libisc's.
5 */
6#ifndef NTP_MD5_H
7#define NTP_MD5_H
8
9/* Use the system MD5 or fall back on libisc's */
10# if defined HAVE_MD5_H && defined HAVE_MD5INIT
11#  include <md5.h>
12# else
13#  include "isc/md5.h"
14   typedef isc_md5_t		MD5_CTX;
15#  define MD5_DIGEST_LENGTH	ISC_MD5_DIGESTLENGTH
16#  define MD5Init(c)		isc_md5_init(c)
17#  define MD5Update(c, p, s)	isc_md5_update(c, (const void *)p, s)
18#  define MD5Final(d, c)	isc_md5_final((c), (d))	/* swapped */
19# endif
20
21# define KEY_TYPE_MD5			NID_md5
22
23#ifdef OPENSSL
24# include <openssl/evp.h>
25# include "libssl_compat.h"
26# ifdef HAVE_OPENSSL_CMAC_H
27#  include <openssl/cmac.h>
28#  define CMAC                  "AES128CMAC"
29#  define AES_128_KEY_SIZE      16
30# endif /*HAVE_OPENSSL_CMAC_H*/
31#else	/* !OPENSSL follows */
32/*
33 * Provide OpenSSL-alike MD5 API if we're not using OpenSSL
34 */
35
36  typedef MD5_CTX			EVP_MD_CTX;
37
38# define NID_md5			4	/* from openssl/objects.h */
39# define EVP_MAX_MD_SIZE		MD5_DIGEST_LENGTH
40# define EVP_MD_CTX_free(c)		free(c)
41# define EVP_MD_CTX_new()		calloc(1, sizeof(MD5_CTX))
42# define EVP_get_digestbynid(t)		NULL
43# define EVP_md5()			NULL
44# define EVP_MD_CTX_init(c)
45# define EVP_MD_CTX_set_flags(c, f)
46# define EVP_DigestInit(c, dt)		(MD5Init(c), 1)
47# define EVP_DigestInit_ex(c, dt, i)	(MD5Init(c), 1)
48# define EVP_DigestUpdate(c, p, s)	MD5Update(c, (const void *)(p), \
49						  s)
50# define EVP_DigestFinal(c, d, pdl)	\
51	do {				\
52		MD5Final((d), (c));	\
53		*(pdl) = MD5_LENGTH;	\
54	} while (0)
55# endif	/* !OPENSSL */
56#endif	/* NTP_MD5_H */
57