• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* evp_locl.h */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 2000.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 
59 /* Macros to code block cipher wrappers */
60 
61 /* Wrapper functions for each cipher mode */
62 
63 #define BLOCK_CIPHER_ecb_loop() \
64 	size_t i, bl; \
65 	bl = ctx->cipher->block_size;\
66 	if(inl < bl) return 1;\
67 	inl -= bl; \
68 	for(i=0; i <= inl; i+=bl)
69 
70 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
71 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
72 {\
73 	BLOCK_CIPHER_ecb_loop() \
74 		cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
75 	return 1;\
76 }
77 
78 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
79 
80 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
81 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
82 {\
83 	while(inl>=EVP_MAXCHUNK)\
84 	    {\
85 	    cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
86 	    inl-=EVP_MAXCHUNK;\
87 	    in +=EVP_MAXCHUNK;\
88 	    out+=EVP_MAXCHUNK;\
89 	    }\
90 	if (inl)\
91 	    cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
92 	return 1;\
93 }
94 
95 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
96 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
97 {\
98 	while(inl>=EVP_MAXCHUNK) \
99 	    {\
100 	    cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
101 	    inl-=EVP_MAXCHUNK;\
102 	    in +=EVP_MAXCHUNK;\
103 	    out+=EVP_MAXCHUNK;\
104 	    }\
105 	if (inl)\
106 	    cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
107 	return 1;\
108 }
109 
110 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
111 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
112 {\
113 	size_t chunk=EVP_MAXCHUNK;\
114 	if (cbits==1)  chunk>>=3;\
115 	if (inl<chunk) chunk=inl;\
116 	while(inl && inl>=chunk)\
117 	    {\
118             cprefix##_cfb##cbits##_encrypt(in, out, (long)((cbits==1) && !(ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) ?inl*8:inl), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
119 	    inl-=chunk;\
120 	    in +=chunk;\
121 	    out+=chunk;\
122 	    if(inl<chunk) chunk=inl;\
123 	    }\
124 	return 1;\
125 }
126 
127 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
128 	BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
129 	BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
130 	BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
131 	BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
132 
133 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
134 			  key_len, iv_len, flags, init_key, cleanup, \
135 			  set_asn1, get_asn1, ctrl) \
136 static const EVP_CIPHER cname##_##mode = { \
137 	nid##_##nmode, block_size, key_len, iv_len, \
138 	flags | EVP_CIPH_##MODE##_MODE, \
139 	init_key, \
140 	cname##_##mode##_cipher, \
141 	cleanup, \
142 	sizeof(kstruct), \
143 	set_asn1, get_asn1,\
144 	ctrl, \
145 	NULL \
146 }; \
147 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
148 
149 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
150 			     iv_len, flags, init_key, cleanup, set_asn1, \
151 			     get_asn1, ctrl) \
152 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
153 		  iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
154 
155 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
156 			     iv_len, cbits, flags, init_key, cleanup, \
157 			     set_asn1, get_asn1, ctrl) \
158 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
159 		  key_len, iv_len, flags, init_key, cleanup, set_asn1, \
160 		  get_asn1, ctrl)
161 
162 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
163 			     iv_len, cbits, flags, init_key, cleanup, \
164 			     set_asn1, get_asn1, ctrl) \
165 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
166 		  key_len, iv_len, flags, init_key, cleanup, set_asn1, \
167 		  get_asn1, ctrl)
168 
169 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
170 			     flags, init_key, cleanup, set_asn1, \
171 			     get_asn1, ctrl) \
172 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
173 		  0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
174 
175 #define BLOCK_CIPHER_defs(cname, kstruct, \
176 			  nid, block_size, key_len, iv_len, cbits, flags, \
177 			  init_key, cleanup, set_asn1, get_asn1, ctrl) \
178 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
179 		     init_key, cleanup, set_asn1, get_asn1, ctrl) \
180 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
181 		     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
182 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
183 		     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
184 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
185 		     init_key, cleanup, set_asn1, get_asn1, ctrl)
186 
187 
188 /*
189 #define BLOCK_CIPHER_defs(cname, kstruct, \
190 				nid, block_size, key_len, iv_len, flags,\
191 				 init_key, cleanup, set_asn1, get_asn1, ctrl)\
192 static const EVP_CIPHER cname##_cbc = {\
193 	nid##_cbc, block_size, key_len, iv_len, \
194 	flags | EVP_CIPH_CBC_MODE,\
195 	init_key,\
196 	cname##_cbc_cipher,\
197 	cleanup,\
198 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
199 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
200 	set_asn1, get_asn1,\
201 	ctrl, \
202 	NULL \
203 };\
204 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
205 static const EVP_CIPHER cname##_cfb = {\
206 	nid##_cfb64, 1, key_len, iv_len, \
207 	flags | EVP_CIPH_CFB_MODE,\
208 	init_key,\
209 	cname##_cfb_cipher,\
210 	cleanup,\
211 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
212 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
213 	set_asn1, get_asn1,\
214 	ctrl,\
215 	NULL \
216 };\
217 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
218 static const EVP_CIPHER cname##_ofb = {\
219 	nid##_ofb64, 1, key_len, iv_len, \
220 	flags | EVP_CIPH_OFB_MODE,\
221 	init_key,\
222 	cname##_ofb_cipher,\
223 	cleanup,\
224 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
225 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
226 	set_asn1, get_asn1,\
227 	ctrl,\
228 	NULL \
229 };\
230 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
231 static const EVP_CIPHER cname##_ecb = {\
232 	nid##_ecb, block_size, key_len, iv_len, \
233 	flags | EVP_CIPH_ECB_MODE,\
234 	init_key,\
235 	cname##_ecb_cipher,\
236 	cleanup,\
237 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
238 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
239 	set_asn1, get_asn1,\
240 	ctrl,\
241 	NULL \
242 };\
243 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
244 */
245 
246 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
247 			       block_size, key_len, iv_len, cbits, \
248 			       flags, init_key, \
249 			       cleanup, set_asn1, get_asn1, ctrl) \
250 	BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
251 	BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
252 			  cbits, flags, init_key, cleanup, set_asn1, \
253 			  get_asn1, ctrl)
254 
255 #define EVP_C_DATA(kstruct, ctx)	((kstruct *)(ctx)->cipher_data)
256 
257 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len) \
258 	BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
259 	BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
260 			     NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
261 			     0, cipher##_init_key, NULL, \
262 			     EVP_CIPHER_set_asn1_iv, \
263 			     EVP_CIPHER_get_asn1_iv, \
264 			     NULL)
265 
266 struct evp_pkey_ctx_st
267 	{
268 	/* Method associated with this operation */
269 	const EVP_PKEY_METHOD *pmeth;
270 	/* Engine that implements this method or NULL if builtin */
271 	ENGINE *engine;
272 	/* Key: may be NULL */
273 	EVP_PKEY *pkey;
274 	/* Peer key for key agreement, may be NULL */
275 	EVP_PKEY *peerkey;
276 	/* Actual operation */
277 	int operation;
278 	/* Algorithm specific data */
279 	void *data;
280 	/* Application specific data */
281 	void *app_data;
282 	/* Keygen callback */
283 	EVP_PKEY_gen_cb *pkey_gencb;
284 	/* implementation specific keygen data */
285 	int *keygen_info;
286 	int keygen_info_count;
287 	} /* EVP_PKEY_CTX */;
288 
289 #define EVP_PKEY_FLAG_DYNAMIC	1
290 
291 struct evp_pkey_method_st
292 	{
293 	int pkey_id;
294 	int flags;
295 
296 	int (*init)(EVP_PKEY_CTX *ctx);
297 	int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
298 	void (*cleanup)(EVP_PKEY_CTX *ctx);
299 
300 	int (*paramgen_init)(EVP_PKEY_CTX *ctx);
301 	int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
302 
303 	int (*keygen_init)(EVP_PKEY_CTX *ctx);
304 	int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
305 
306 	int (*sign_init)(EVP_PKEY_CTX *ctx);
307 	int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
308 				const unsigned char *tbs, size_t tbslen);
309 
310 	int (*verify_init)(EVP_PKEY_CTX *ctx);
311 	int (*verify)(EVP_PKEY_CTX *ctx,
312 				const unsigned char *sig, size_t siglen,
313 				const unsigned char *tbs, size_t tbslen);
314 
315 	int (*verify_recover_init)(EVP_PKEY_CTX *ctx);
316 	int (*verify_recover)(EVP_PKEY_CTX *ctx,
317 				unsigned char *rout, size_t *routlen,
318 				const unsigned char *sig, size_t siglen);
319 
320 	int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
321 	int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
322 					EVP_MD_CTX *mctx);
323 
324 	int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
325 	int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen,
326 					EVP_MD_CTX *mctx);
327 
328 	int (*encrypt_init)(EVP_PKEY_CTX *ctx);
329 	int (*encrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
330 					const unsigned char *in, size_t inlen);
331 
332 	int (*decrypt_init)(EVP_PKEY_CTX *ctx);
333 	int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
334 					const unsigned char *in, size_t inlen);
335 
336 	int (*derive_init)(EVP_PKEY_CTX *ctx);
337 	int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
338 
339 	int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
340 	int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value);
341 
342 
343 	} /* EVP_PKEY_METHOD */;
344 
345 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
346