contrib/bind/lib/dns/dst_internal.h

   1 /*
   2  * Portions Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Portions Copyright (C) 2000-2002  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
  10  * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  11  * WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE
  12  * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  15  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  *
  17  * Portions Copyright (C) 1995-2000 by Network Associates, Inc.
  18  *
  19  * Permission to use, copy, modify, and/or distribute this software for any
  20  * purpose with or without fee is hereby granted, provided that the above
  21  * copyright notice and this permission notice appear in all copies.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
  24  * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  25  * WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE
  26  * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  27  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  28  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  29  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  30  */
  31
  32 /* $Id: dst_internal.h,v 1.9 2007/08/28 07:20:42 tbox Exp $ */
  33
  34 #ifndef DST_DST_INTERNAL_H
  35 #define DST_DST_INTERNAL_H 1
  36
  37 #include <isc/lang.h>
  38 #include <isc/buffer.h>
  39 #include <isc/int.h>
  40 #include <isc/magic.h>
  41 #include <isc/region.h>
  42 #include <isc/types.h>
  43 #include <isc/md5.h>
  44 #include <isc/sha1.h>
  45 #include <isc/hmacmd5.h>
  46 #include <isc/hmacsha.h>
  47
  48 #include <dst/dst.h>
  49
  50 #ifdef OPENSSL
  51 #include <openssl/dh.h>
  52 #include <openssl/dsa.h>
  53 #include <openssl/err.h>
  54 #include <openssl/objects.h>
  55 #include <openssl/rsa.h>
  56 #endif
  57
  58 ISC_LANG_BEGINDECLS
  59
  60 #define KEY_MAGIC       ISC_MAGIC('D','S','T','K')
  61 #define CTX_MAGIC       ISC_MAGIC('D','S','T','C')
  62
  63 #define VALID_KEY(x) ISC_MAGIC_VALID(x, KEY_MAGIC)
  64 #define VALID_CTX(x) ISC_MAGIC_VALID(x, CTX_MAGIC)
  65
  66 extern isc_mem_t *dst__memory_pool;
  67
  68 /***
  69  *** Types
  70  ***/
  71
  72 typedef struct dst_func dst_func_t;
  73
  74 typedef struct dst_hmacmd5_key    dst_hmacmd5_key_t;
  75 typedef struct dst_hmacsha1_key   dst_hmacsha1_key_t;
  76 typedef struct dst_hmacsha224_key dst_hmacsha224_key_t;
  77 typedef struct dst_hmacsha256_key dst_hmacsha256_key_t;
  78 typedef struct dst_hmacsha384_key dst_hmacsha384_key_t;
  79 typedef struct dst_hmacsha512_key dst_hmacsha512_key_t;
  80
  81 /*% DST Key Structure */
  82 struct dst_key {
  83         unsigned int    magic;
  84         dns_name_t *    key_name;       /*%< name of the key */
  85         unsigned int    key_size;       /*%< size of the key in bits */
  86         unsigned int    key_proto;      /*%< protocols this key is used for */
  87         unsigned int    key_alg;        /*%< algorithm of the key */
  88         isc_uint32_t    key_flags;      /*%< flags of the public key */
  89         isc_uint16_t    key_id;         /*%< identifier of the key */
  90         isc_uint16_t    key_bits;       /*%< hmac digest bits */
  91         dns_rdataclass_t key_class;     /*%< class of the key record */
  92         isc_mem_t       *mctx;          /*%< memory context */
  93         union {
  94                 void *generic;
  95                 gss_ctx_id_t gssctx;
  96 #ifdef OPENSSL
  97                 RSA *rsa;
  98                 DSA *dsa;
  99                 DH *dh;
 100 #endif
 101                 dst_hmacmd5_key_t *hmacmd5;
 102                 dst_hmacsha1_key_t *hmacsha1;
 103                 dst_hmacsha224_key_t *hmacsha224;
 104                 dst_hmacsha256_key_t *hmacsha256;
 105                 dst_hmacsha384_key_t *hmacsha384;
 106                 dst_hmacsha512_key_t *hmacsha512;
 107
 108         } keydata;                      /*%< pointer to key in crypto pkg fmt */
 109         dst_func_t *    func;           /*%< crypto package specific functions */
 110 };
 111
 112 struct dst_context {
 113         unsigned int magic;
 114         dst_key_t *key;
 115         isc_mem_t *mctx;
 116         union {
 117                 void *generic;
 118                 dst_gssapi_signverifyctx_t *gssctx;
 119                 isc_md5_t *md5ctx;
 120                 isc_sha1_t *sha1ctx;
 121                 isc_hmacmd5_t *hmacmd5ctx;
 122                 isc_hmacsha1_t *hmacsha1ctx;
 123                 isc_hmacsha224_t *hmacsha224ctx;
 124                 isc_hmacsha256_t *hmacsha256ctx;
 125                 isc_hmacsha384_t *hmacsha384ctx;
 126                 isc_hmacsha512_t *hmacsha512ctx;
 127         } ctxdata;
 128 };
 129
 130 struct dst_func {
 131         /*
 132          * Context functions
 133          */
 134         isc_result_t (*createctx)(dst_key_t *key, dst_context_t *dctx);
 135         void (*destroyctx)(dst_context_t *dctx);
 136         isc_result_t (*adddata)(dst_context_t *dctx, const isc_region_t *data);
 137
 138         /*
 139          * Key operations
 140          */
 141         isc_result_t (*sign)(dst_context_t *dctx, isc_buffer_t *sig);
 142         isc_result_t (*verify)(dst_context_t *dctx, const isc_region_t *sig);
 143         isc_result_t (*computesecret)(const dst_key_t *pub,
 144                                       const dst_key_t *priv,
 145                                       isc_buffer_t *secret);
 146         isc_boolean_t (*compare)(const dst_key_t *key1, const dst_key_t *key2);
 147         isc_boolean_t (*paramcompare)(const dst_key_t *key1,
 148                                       const dst_key_t *key2);
 149         isc_result_t (*generate)(dst_key_t *key, int parms);
 150         isc_boolean_t (*isprivate)(const dst_key_t *key);
 151         void (*destroy)(dst_key_t *key);
 152
 153         /* conversion functions */
 154         isc_result_t (*todns)(const dst_key_t *key, isc_buffer_t *data);
 155         isc_result_t (*fromdns)(dst_key_t *key, isc_buffer_t *data);
 156         isc_result_t (*tofile)(const dst_key_t *key, const char *directory);
 157         isc_result_t (*parse)(dst_key_t *key, isc_lex_t *lexer);
 158
 159         /* cleanup */
 160         void (*cleanup)(void);
 161 };
 162
 163 /*%
 164  * Initializers
 165  */
 166 isc_result_t dst__openssl_init(void);
 167
 168 isc_result_t dst__hmacmd5_init(struct dst_func **funcp);
 169 isc_result_t dst__hmacsha1_init(struct dst_func **funcp);
 170 isc_result_t dst__hmacsha224_init(struct dst_func **funcp);
 171 isc_result_t dst__hmacsha256_init(struct dst_func **funcp);
 172 isc_result_t dst__hmacsha384_init(struct dst_func **funcp);
 173 isc_result_t dst__hmacsha512_init(struct dst_func **funcp);
 174 isc_result_t dst__opensslrsa_init(struct dst_func **funcp);
 175 isc_result_t dst__openssldsa_init(struct dst_func **funcp);
 176 isc_result_t dst__openssldh_init(struct dst_func **funcp);
 177 isc_result_t dst__gssapi_init(struct dst_func **funcp);
 178
 179 /*%
 180  * Destructors
 181  */
 182 void dst__openssl_destroy(void);
 183
 184 /*%
 185  * Memory allocators using the DST memory pool.
 186  */
 187 void * dst__mem_alloc(size_t size);
 188 void   dst__mem_free(void *ptr);
 189 void * dst__mem_realloc(void *ptr, size_t size);
 190
 191 /*%
 192  * Entropy retriever using the DST entropy pool.
 193  */
 194 isc_result_t dst__entropy_getdata(void *buf, unsigned int len,
 195                                   isc_boolean_t pseudo);
 196
 197 /*
 198  * Entropy status hook.
 199  */
 200 unsigned int dst__entropy_status(void);
 201
 202 ISC_LANG_ENDDECLS
 203
 204 #endif /* DST_DST_INTERNAL_H */
 205 /*! \file */