1/*
2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <openssl/evp.h>
11#include <openssl/core_numbers.h>
12#include "internal/refcount.h"
13
14/*
15 * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag
16 * values in evp.h
17 */
18#define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX 0x0400
19
20struct evp_pkey_ctx_st {
21 /* Actual operation */
22 int operation;
23
24 /*
25 * Library context, Algorithm name and properties associated
26 * with this context
27 */
28 OPENSSL_CTX *libctx;
29 const char *algorithm;
30 const char *propquery;
31
32 /* cached key manager */
33 EVP_KEYMGMT *keymgmt;
34
35 union {
36 struct {
37 EVP_KEYEXCH *exchange;
38 void *exchprovctx;
39 } kex;
40
41 struct {
42 EVP_SIGNATURE *signature;
43 void *sigprovctx;
44 } sig;
45
46 struct {
47 EVP_ASYM_CIPHER *cipher;
48 void *ciphprovctx;
49 } ciph;
50 } op;
51
52 /* Legacy fields below */
53
54 /* Method associated with this operation */
55 const EVP_PKEY_METHOD *pmeth;
56 /* Engine that implements this method or NULL if builtin */
57 ENGINE *engine;
58 /* Key: may be NULL */
59 EVP_PKEY *pkey;
60 /* Peer key for key agreement, may be NULL */
61 EVP_PKEY *peerkey;
62 /* Algorithm specific data */
63 void *data;
64 /* Application specific data */
65 void *app_data;
66 /* Keygen callback */
67 EVP_PKEY_gen_cb *pkey_gencb;
68 /* implementation specific keygen data */
69 int *keygen_info;
70 int keygen_info_count;
71} /* EVP_PKEY_CTX */ ;
72
73#define EVP_PKEY_FLAG_DYNAMIC 1
74
75struct evp_pkey_method_st {
76 int pkey_id;
77 int flags;
78 int (*init) (EVP_PKEY_CTX *ctx);
79 int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
80 void (*cleanup) (EVP_PKEY_CTX *ctx);
81 int (*paramgen_init) (EVP_PKEY_CTX *ctx);
82 int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
83 int (*keygen_init) (EVP_PKEY_CTX *ctx);
84 int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
85 int (*sign_init) (EVP_PKEY_CTX *ctx);
86 int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
87 const unsigned char *tbs, size_t tbslen);
88 int (*verify_init) (EVP_PKEY_CTX *ctx);
89 int (*verify) (EVP_PKEY_CTX *ctx,
90 const unsigned char *sig, size_t siglen,
91 const unsigned char *tbs, size_t tbslen);
92 int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
93 int (*verify_recover) (EVP_PKEY_CTX *ctx,
94 unsigned char *rout, size_t *routlen,
95 const unsigned char *sig, size_t siglen);
96 int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
97 int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
98 EVP_MD_CTX *mctx);
99 int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
100 int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
101 EVP_MD_CTX *mctx);
102 int (*encrypt_init) (EVP_PKEY_CTX *ctx);
103 int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
104 const unsigned char *in, size_t inlen);
105 int (*decrypt_init) (EVP_PKEY_CTX *ctx);
106 int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
107 const unsigned char *in, size_t inlen);
108 int (*derive_init) (EVP_PKEY_CTX *ctx);
109 int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
110 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
111 int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
112 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
113 const unsigned char *tbs, size_t tbslen);
114 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
115 size_t siglen, const unsigned char *tbs,
116 size_t tbslen);
117 int (*check) (EVP_PKEY *pkey);
118 int (*public_check) (EVP_PKEY *pkey);
119 int (*param_check) (EVP_PKEY *pkey);
120
121 int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
122} /* EVP_PKEY_METHOD */ ;
123
124DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
125
126void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
127
128const EVP_PKEY_METHOD *cmac_pkey_method(void);
129const EVP_PKEY_METHOD *dh_pkey_method(void);
130const EVP_PKEY_METHOD *dhx_pkey_method(void);
131const EVP_PKEY_METHOD *dsa_pkey_method(void);
132const EVP_PKEY_METHOD *ec_pkey_method(void);
133const EVP_PKEY_METHOD *sm2_pkey_method(void);
134const EVP_PKEY_METHOD *ecx25519_pkey_method(void);
135const EVP_PKEY_METHOD *ecx448_pkey_method(void);
136const EVP_PKEY_METHOD *ed25519_pkey_method(void);
137const EVP_PKEY_METHOD *ed448_pkey_method(void);
138const EVP_PKEY_METHOD *hmac_pkey_method(void);
139const EVP_PKEY_METHOD *rsa_pkey_method(void);
140const EVP_PKEY_METHOD *rsa_pss_pkey_method(void);
141const EVP_PKEY_METHOD *scrypt_pkey_method(void);
142const EVP_PKEY_METHOD *tls1_prf_pkey_method(void);
143const EVP_PKEY_METHOD *hkdf_pkey_method(void);
144const EVP_PKEY_METHOD *poly1305_pkey_method(void);
145const EVP_PKEY_METHOD *siphash_pkey_method(void);
146
147struct evp_mac_st {
148 OSSL_PROVIDER *prov;
149 int name_id;
150
151 CRYPTO_REF_COUNT refcnt;
152 CRYPTO_RWLOCK *lock;
153
154 OSSL_OP_mac_newctx_fn *newctx;
155 OSSL_OP_mac_dupctx_fn *dupctx;
156 OSSL_OP_mac_freectx_fn *freectx;
157 OSSL_OP_mac_size_fn *size;
158 OSSL_OP_mac_init_fn *init;
159 OSSL_OP_mac_update_fn *update;
160 OSSL_OP_mac_final_fn *final;
161 OSSL_OP_mac_gettable_params_fn *gettable_params;
162 OSSL_OP_mac_gettable_ctx_params_fn *gettable_ctx_params;
163 OSSL_OP_mac_settable_ctx_params_fn *settable_ctx_params;
164 OSSL_OP_mac_get_params_fn *get_params;
165 OSSL_OP_mac_get_ctx_params_fn *get_ctx_params;
166 OSSL_OP_mac_set_ctx_params_fn *set_ctx_params;
167};
168
169struct evp_kdf_st {
170 OSSL_PROVIDER *prov;
171 int name_id;
172 CRYPTO_REF_COUNT refcnt;
173 CRYPTO_RWLOCK *lock;
174
175 OSSL_OP_kdf_newctx_fn *newctx;
176 OSSL_OP_kdf_dupctx_fn *dupctx;
177 OSSL_OP_kdf_freectx_fn *freectx;
178 OSSL_OP_kdf_reset_fn *reset;
179 OSSL_OP_kdf_derive_fn *derive;
180 OSSL_OP_kdf_gettable_params_fn *gettable_params;
181 OSSL_OP_kdf_gettable_ctx_params_fn *gettable_ctx_params;
182 OSSL_OP_kdf_settable_ctx_params_fn *settable_ctx_params;
183 OSSL_OP_kdf_get_params_fn *get_params;
184 OSSL_OP_kdf_get_ctx_params_fn *get_ctx_params;
185 OSSL_OP_kdf_set_ctx_params_fn *set_ctx_params;
186};
187
188struct evp_md_st {
189 /* nid */
190 int type;
191
192 /* Legacy structure members */
193 /* TODO(3.0): Remove these */
194 int pkey_type;
195 int md_size;
196 unsigned long flags;
197 int (*init) (EVP_MD_CTX *ctx);
198 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
199 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
200 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
201 int (*cleanup) (EVP_MD_CTX *ctx);
202 int block_size;
203 int ctx_size; /* how big does the ctx->md_data need to be */
204 /* control function */
205 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
206
207 /* New structure members */
208 /* TODO(3.0): Remove above comment when legacy has gone */
209 int name_id;
210 OSSL_PROVIDER *prov;
211 CRYPTO_REF_COUNT refcnt;
212 CRYPTO_RWLOCK *lock;
213 OSSL_OP_digest_newctx_fn *newctx;
214 OSSL_OP_digest_init_fn *dinit;
215 OSSL_OP_digest_update_fn *dupdate;
216 OSSL_OP_digest_final_fn *dfinal;
217 OSSL_OP_digest_digest_fn *digest;
218 OSSL_OP_digest_freectx_fn *freectx;
219 OSSL_OP_digest_dupctx_fn *dupctx;
220 OSSL_OP_digest_get_params_fn *get_params;
221 OSSL_OP_digest_set_ctx_params_fn *set_ctx_params;
222 OSSL_OP_digest_get_ctx_params_fn *get_ctx_params;
223 OSSL_OP_digest_gettable_params_fn *gettable_params;
224 OSSL_OP_digest_settable_ctx_params_fn *settable_ctx_params;
225 OSSL_OP_digest_gettable_ctx_params_fn *gettable_ctx_params;
226
227} /* EVP_MD */ ;
228
229struct evp_cipher_st {
230 int nid;
231
232 int block_size;
233 /* Default value for variable length ciphers */
234 int key_len;
235 int iv_len;
236
237 /* Legacy structure members */
238 /* TODO(3.0): Remove these */
239 /* Various flags */
240 unsigned long flags;
241 /* init key */
242 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
243 const unsigned char *iv, int enc);
244 /* encrypt/decrypt data */
245 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
246 const unsigned char *in, size_t inl);
247 /* cleanup ctx */
248 int (*cleanup) (EVP_CIPHER_CTX *);
249 /* how big ctx->cipher_data needs to be */
250 int ctx_size;
251 /* Populate a ASN1_TYPE with parameters */
252 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
253 /* Get parameters from a ASN1_TYPE */
254 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
255 /* Miscellaneous operations */
256 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
257 /* Application data */
258 void *app_data;
259
260 /* New structure members */
261 /* TODO(3.0): Remove above comment when legacy has gone */
262 int name_id;
263 OSSL_PROVIDER *prov;
264 CRYPTO_REF_COUNT refcnt;
265 CRYPTO_RWLOCK *lock;
266 OSSL_OP_cipher_newctx_fn *newctx;
267 OSSL_OP_cipher_encrypt_init_fn *einit;
268 OSSL_OP_cipher_decrypt_init_fn *dinit;
269 OSSL_OP_cipher_update_fn *cupdate;
270 OSSL_OP_cipher_final_fn *cfinal;
271 OSSL_OP_cipher_cipher_fn *ccipher;
272 OSSL_OP_cipher_freectx_fn *freectx;
273 OSSL_OP_cipher_dupctx_fn *dupctx;
274 OSSL_OP_cipher_get_params_fn *get_params;
275 OSSL_OP_cipher_get_ctx_params_fn *get_ctx_params;
276 OSSL_OP_cipher_set_ctx_params_fn *set_ctx_params;
277 OSSL_OP_cipher_gettable_params_fn *gettable_params;
278 OSSL_OP_cipher_gettable_ctx_params_fn *gettable_ctx_params;
279 OSSL_OP_cipher_settable_ctx_params_fn *settable_ctx_params;
280} /* EVP_CIPHER */ ;
281
282/* Macros to code block cipher wrappers */
283
284/* Wrapper functions for each cipher mode */
285
286#define EVP_C_DATA(kstruct, ctx) \
287 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
288
289#define BLOCK_CIPHER_ecb_loop() \
290 size_t i, bl; \
291 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
292 if (inl < bl) return 1;\
293 inl -= bl; \
294 for (i=0; i <= inl; i+=bl)
295
296#define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
297static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
298{\
299 BLOCK_CIPHER_ecb_loop() \
300 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
301 return 1;\
302}
303
304#define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
305
306#define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
307 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
308{\
309 while(inl>=EVP_MAXCHUNK) {\
310 int num = EVP_CIPHER_CTX_num(ctx);\
311 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
312 EVP_CIPHER_CTX_set_num(ctx, num);\
313 inl-=EVP_MAXCHUNK;\
314 in +=EVP_MAXCHUNK;\
315 out+=EVP_MAXCHUNK;\
316 }\
317 if (inl) {\
318 int num = EVP_CIPHER_CTX_num(ctx);\
319 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
320 EVP_CIPHER_CTX_set_num(ctx, num);\
321 }\
322 return 1;\
323}
324
325#define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
326static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
327{\
328 while(inl>=EVP_MAXCHUNK) \
329 {\
330 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
331 inl-=EVP_MAXCHUNK;\
332 in +=EVP_MAXCHUNK;\
333 out+=EVP_MAXCHUNK;\
334 }\
335 if (inl)\
336 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
337 return 1;\
338}
339
340#define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
341static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
342{\
343 size_t chunk = EVP_MAXCHUNK;\
344 if (cbits == 1) chunk >>= 3;\
345 if (inl < chunk) chunk = inl;\
346 while (inl && inl >= chunk)\
347 {\
348 int num = EVP_CIPHER_CTX_num(ctx);\
349 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
350 ((cbits == 1) \
351 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
352 ? chunk*8 : chunk), \
353 &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
354 &num, EVP_CIPHER_CTX_encrypting(ctx));\
355 EVP_CIPHER_CTX_set_num(ctx, num);\
356 inl -= chunk;\
357 in += chunk;\
358 out += chunk;\
359 if (inl < chunk) chunk = inl;\
360 }\
361 return 1;\
362}
363
364#define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
365 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
366 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
367 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
368 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
369
370#define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
371 key_len, iv_len, flags, init_key, cleanup, \
372 set_asn1, get_asn1, ctrl) \
373static const EVP_CIPHER cname##_##mode = { \
374 nid##_##nmode, block_size, key_len, iv_len, \
375 flags | EVP_CIPH_##MODE##_MODE, \
376 init_key, \
377 cname##_##mode##_cipher, \
378 cleanup, \
379 sizeof(kstruct), \
380 set_asn1, get_asn1,\
381 ctrl, \
382 NULL \
383}; \
384const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
385
386#define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
387 iv_len, flags, init_key, cleanup, set_asn1, \
388 get_asn1, ctrl) \
389BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
390 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
391
392#define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
393 iv_len, cbits, flags, init_key, cleanup, \
394 set_asn1, get_asn1, ctrl) \
395BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
396 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
397 get_asn1, ctrl)
398
399#define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
400 iv_len, cbits, flags, init_key, cleanup, \
401 set_asn1, get_asn1, ctrl) \
402BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
403 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
404 get_asn1, ctrl)
405
406#define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
407 flags, init_key, cleanup, set_asn1, \
408 get_asn1, ctrl) \
409BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
410 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
411
412#define BLOCK_CIPHER_defs(cname, kstruct, \
413 nid, block_size, key_len, iv_len, cbits, flags, \
414 init_key, cleanup, set_asn1, get_asn1, ctrl) \
415BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
416 init_key, cleanup, set_asn1, get_asn1, ctrl) \
417BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
418 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
419BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
420 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
421BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
422 init_key, cleanup, set_asn1, get_asn1, ctrl)
423
424/*-
425#define BLOCK_CIPHER_defs(cname, kstruct, \
426 nid, block_size, key_len, iv_len, flags,\
427 init_key, cleanup, set_asn1, get_asn1, ctrl)\
428static const EVP_CIPHER cname##_cbc = {\
429 nid##_cbc, block_size, key_len, iv_len, \
430 flags | EVP_CIPH_CBC_MODE,\
431 init_key,\
432 cname##_cbc_cipher,\
433 cleanup,\
434 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
435 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
436 set_asn1, get_asn1,\
437 ctrl, \
438 NULL \
439};\
440const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
441static const EVP_CIPHER cname##_cfb = {\
442 nid##_cfb64, 1, key_len, iv_len, \
443 flags | EVP_CIPH_CFB_MODE,\
444 init_key,\
445 cname##_cfb_cipher,\
446 cleanup,\
447 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
448 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
449 set_asn1, get_asn1,\
450 ctrl,\
451 NULL \
452};\
453const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
454static const EVP_CIPHER cname##_ofb = {\
455 nid##_ofb64, 1, key_len, iv_len, \
456 flags | EVP_CIPH_OFB_MODE,\
457 init_key,\
458 cname##_ofb_cipher,\
459 cleanup,\
460 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
461 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
462 set_asn1, get_asn1,\
463 ctrl,\
464 NULL \
465};\
466const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
467static const EVP_CIPHER cname##_ecb = {\
468 nid##_ecb, block_size, key_len, iv_len, \
469 flags | EVP_CIPH_ECB_MODE,\
470 init_key,\
471 cname##_ecb_cipher,\
472 cleanup,\
473 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
474 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
475 set_asn1, get_asn1,\
476 ctrl,\
477 NULL \
478};\
479const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
480*/
481
482#define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
483 block_size, key_len, iv_len, cbits, \
484 flags, init_key, \
485 cleanup, set_asn1, get_asn1, ctrl) \
486 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
487 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
488 cbits, flags, init_key, cleanup, set_asn1, \
489 get_asn1, ctrl)
490
491#define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
492 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
493 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
494 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
495 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
496 cipher##_init_key, NULL, NULL, NULL, NULL)
497
498
499# ifndef OPENSSL_NO_EC
500
501#define X25519_KEYLEN 32
502#define X448_KEYLEN 56
503#define ED25519_KEYLEN 32
504#define ED448_KEYLEN 57
505
506#define MAX_KEYLEN ED448_KEYLEN
507
508typedef struct {
509 unsigned char pubkey[MAX_KEYLEN];
510 unsigned char *privkey;
511} ECX_KEY;
512
513#endif
514
515/*
516 * Type needs to be a bit field Sub-type needs to be for variations on the
517 * method, as in, can it do arbitrary encryption....
518 */
519struct evp_pkey_st {
520 /* == Legacy attributes == */
521 int type;
522 int save_type;
523 const EVP_PKEY_ASN1_METHOD *ameth;
524 ENGINE *engine;
525 ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
526 union {
527 void *ptr;
528# ifndef OPENSSL_NO_RSA
529 struct rsa_st *rsa; /* RSA */
530# endif
531# ifndef OPENSSL_NO_DSA
532 struct dsa_st *dsa; /* DSA */
533# endif
534# ifndef OPENSSL_NO_DH
535 struct dh_st *dh; /* DH */
536# endif
537# ifndef OPENSSL_NO_EC
538 struct ec_key_st *ec; /* ECC */
539 ECX_KEY *ecx; /* X25519, X448, Ed25519, Ed448 */
540# endif
541 } pkey;
542
543 /* == Common attributes == */
544 CRYPTO_REF_COUNT references;
545 CRYPTO_RWLOCK *lock;
546 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
547 int save_parameters;
548
549 /* == Provider attributes == */
550 /*
551 * To support transparent export/import between providers that
552 * support the methods for it, and still not having to do the
553 * export/import every time a key or domain params are used, we
554 * maintain a cache of imported key / domain params, indexed by
555 * provider address. pkeys[0] is *always* the "original" data.
556 */
557 struct {
558 EVP_KEYMGMT *keymgmt;
559 void *provdata;
560 /* 0 = provdata is a key, 1 = provdata is domain params */
561 int domainparams;
562 } pkeys[10];
563 /*
564 * If there is a legacy key assigned to this structure, we keep
565 * a copy of that key's dirty count.
566 */
567 size_t dirty_cnt_copy;
568} /* EVP_PKEY */ ;
569
570#define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
571 ((ctx)->operation == EVP_PKEY_OP_SIGN \
572 || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
573 || (ctx)->operation == EVP_PKEY_OP_VERIFY \
574 || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
575 || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
576
577#define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
578 ((ctx)->operation == EVP_PKEY_OP_DERIVE)
579
580#define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
581 ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
582 || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
583
584void openssl_add_all_ciphers_int(void);
585void openssl_add_all_digests_int(void);
586void evp_cleanup_int(void);
587void evp_app_cleanup_int(void);
588
589/* KEYMGMT helper functions */
590void *evp_keymgmt_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
591 int domainparams);
592void evp_keymgmt_clear_pkey_cache(EVP_PKEY *pk);
593void *evp_keymgmt_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
594 const OSSL_PARAM params[], int domainparams);
595
596
597/* KEYMGMT provider interface functions */
598void *evp_keymgmt_importdomparams(const EVP_KEYMGMT *keymgmt,
599 const OSSL_PARAM params[]);
600void *evp_keymgmt_gendomparams(const EVP_KEYMGMT *keymgmt,
601 const OSSL_PARAM params[]);
602void evp_keymgmt_freedomparams(const EVP_KEYMGMT *keymgmt,
603 void *provdomparams);
604int evp_keymgmt_exportdomparams(const EVP_KEYMGMT *keymgmt,
605 void *provdomparams,
606 OSSL_CALLBACK *param_cb, void *cbarg);
607const OSSL_PARAM *
608evp_keymgmt_importdomparam_types(const EVP_KEYMGMT *keymgmt);
609const OSSL_PARAM *
610evp_keymgmt_exportdomparam_types(const EVP_KEYMGMT *keymgmt);
611
612void *evp_keymgmt_importkey(const EVP_KEYMGMT *keymgmt,
613 const OSSL_PARAM params[]);
614void *evp_keymgmt_genkey(const EVP_KEYMGMT *keymgmt, void *domparams,
615 const OSSL_PARAM params[]);
616void *evp_keymgmt_loadkey(const EVP_KEYMGMT *keymgmt,
617 void *id, size_t idlen);
618void evp_keymgmt_freekey(const EVP_KEYMGMT *keymgmt, void *provkey);
619int evp_keymgmt_exportkey(const EVP_KEYMGMT *keymgmt, void *provkey,
620 OSSL_CALLBACK *param_cb, void *cbarg);
621const OSSL_PARAM *evp_keymgmt_importkey_types(const EVP_KEYMGMT *keymgmt);
622const OSSL_PARAM *evp_keymgmt_exportkey_types(const EVP_KEYMGMT *keymgmt);
623
624/* Pulling defines out of C source files */
625
626#define EVP_RC4_KEY_SIZE 16
627#ifndef TLS1_1_VERSION
628# define TLS1_1_VERSION 0x0302
629#endif
630
631void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
632
633/* EVP_ENCODE_CTX flags */
634/* Don't generate new lines when encoding */
635#define EVP_ENCODE_CTX_NO_NEWLINES 1
636/* Use the SRP base64 alphabet instead of the standard one */
637#define EVP_ENCODE_CTX_USE_SRP_ALPHABET 2
638
639const EVP_CIPHER *evp_get_cipherbyname_ex(OPENSSL_CTX *libctx, const char *name);
640const EVP_MD *evp_get_digestbyname_ex(OPENSSL_CTX *libctx, const char *name);
641