2 * Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/evp.h>
11 #include <openssl/core_dispatch.h>
12 #include "internal/refcount.h"
13 #include "crypto/ecx.h"
16 * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag
19 #define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX 0x0400
21 struct evp_pkey_ctx_st {
22 /* Actual operation */
26 * Library context, property query, keytype and keymgmt associated with
30 const char *propquery;
40 EVP_KEYEXCH *exchange;
45 EVP_SIGNATURE *signature;
50 EVP_ASYM_CIPHER *cipher;
60 * Cached parameters. Inits of operations that depend on these should
61 * call evp_pkey_ctx_use_delayed_data() when the operation has been set
65 /* Distinguishing Identifier, ISO/IEC 15946-3, FIPS 196 */
66 char *dist_id_name; /* The name used with EVP_PKEY_CTX_ctrl_str() */
67 void *dist_id; /* The distinguishing ID itself */
68 size_t dist_id_len; /* The length of the distinguishing ID */
70 /* Indicators of what has been set. Keep them together! */
71 unsigned int dist_id_set : 1;
74 /* Application specific data, usually used by the callback */
77 EVP_PKEY_gen_cb *pkey_gencb;
78 /* implementation specific keygen data */
80 int keygen_info_count;
82 /* Legacy fields below */
84 /* EVP_PKEY identity */
86 /* Method associated with this operation */
87 const EVP_PKEY_METHOD *pmeth;
88 /* Engine that implements this method or NULL if builtin */
90 /* Key: may be NULL */
92 /* Peer key for key agreement, may be NULL */
94 /* Algorithm specific data */
96 /* Indicator if digest_custom needs to be called */
97 unsigned int flag_call_digest_custom:1;
98 } /* EVP_PKEY_CTX */ ;
100 #define EVP_PKEY_FLAG_DYNAMIC 1
102 struct evp_pkey_method_st {
105 int (*init) (EVP_PKEY_CTX *ctx);
106 int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
107 void (*cleanup) (EVP_PKEY_CTX *ctx);
108 int (*paramgen_init) (EVP_PKEY_CTX *ctx);
109 int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
110 int (*keygen_init) (EVP_PKEY_CTX *ctx);
111 int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
112 int (*sign_init) (EVP_PKEY_CTX *ctx);
113 int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
114 const unsigned char *tbs, size_t tbslen);
115 int (*verify_init) (EVP_PKEY_CTX *ctx);
116 int (*verify) (EVP_PKEY_CTX *ctx,
117 const unsigned char *sig, size_t siglen,
118 const unsigned char *tbs, size_t tbslen);
119 int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
120 int (*verify_recover) (EVP_PKEY_CTX *ctx,
121 unsigned char *rout, size_t *routlen,
122 const unsigned char *sig, size_t siglen);
123 int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
124 int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
126 int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
127 int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
129 int (*encrypt_init) (EVP_PKEY_CTX *ctx);
130 int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
131 const unsigned char *in, size_t inlen);
132 int (*decrypt_init) (EVP_PKEY_CTX *ctx);
133 int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
134 const unsigned char *in, size_t inlen);
135 int (*derive_init) (EVP_PKEY_CTX *ctx);
136 int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
137 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
138 int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
139 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
140 const unsigned char *tbs, size_t tbslen);
141 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
142 size_t siglen, const unsigned char *tbs,
144 int (*check) (EVP_PKEY *pkey);
145 int (*public_check) (EVP_PKEY *pkey);
146 int (*param_check) (EVP_PKEY *pkey);
148 int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
149 } /* EVP_PKEY_METHOD */ ;
151 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
153 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
155 const EVP_PKEY_METHOD *dh_pkey_method(void);
156 const EVP_PKEY_METHOD *dhx_pkey_method(void);
157 const EVP_PKEY_METHOD *dsa_pkey_method(void);
158 const EVP_PKEY_METHOD *ec_pkey_method(void);
159 const EVP_PKEY_METHOD *sm2_pkey_method(void);
160 const EVP_PKEY_METHOD *ecx25519_pkey_method(void);
161 const EVP_PKEY_METHOD *ecx448_pkey_method(void);
162 const EVP_PKEY_METHOD *ed25519_pkey_method(void);
163 const EVP_PKEY_METHOD *ed448_pkey_method(void);
164 const EVP_PKEY_METHOD *rsa_pkey_method(void);
165 const EVP_PKEY_METHOD *rsa_pss_pkey_method(void);
171 CRYPTO_REF_COUNT refcnt;
174 OSSL_FUNC_mac_newctx_fn *newctx;
175 OSSL_FUNC_mac_dupctx_fn *dupctx;
176 OSSL_FUNC_mac_freectx_fn *freectx;
177 OSSL_FUNC_mac_size_fn *size;
178 OSSL_FUNC_mac_init_fn *init;
179 OSSL_FUNC_mac_update_fn *update;
180 OSSL_FUNC_mac_final_fn *final;
181 OSSL_FUNC_mac_gettable_params_fn *gettable_params;
182 OSSL_FUNC_mac_gettable_ctx_params_fn *gettable_ctx_params;
183 OSSL_FUNC_mac_settable_ctx_params_fn *settable_ctx_params;
184 OSSL_FUNC_mac_get_params_fn *get_params;
185 OSSL_FUNC_mac_get_ctx_params_fn *get_ctx_params;
186 OSSL_FUNC_mac_set_ctx_params_fn *set_ctx_params;
192 CRYPTO_REF_COUNT refcnt;
195 OSSL_FUNC_kdf_newctx_fn *newctx;
196 OSSL_FUNC_kdf_dupctx_fn *dupctx;
197 OSSL_FUNC_kdf_freectx_fn *freectx;
198 OSSL_FUNC_kdf_reset_fn *reset;
199 OSSL_FUNC_kdf_derive_fn *derive;
200 OSSL_FUNC_kdf_gettable_params_fn *gettable_params;
201 OSSL_FUNC_kdf_gettable_ctx_params_fn *gettable_ctx_params;
202 OSSL_FUNC_kdf_settable_ctx_params_fn *settable_ctx_params;
203 OSSL_FUNC_kdf_get_params_fn *get_params;
204 OSSL_FUNC_kdf_get_ctx_params_fn *get_ctx_params;
205 OSSL_FUNC_kdf_set_ctx_params_fn *set_ctx_params;
212 /* Legacy structure members */
213 /* TODO(3.0): Remove these */
217 int (*init) (EVP_MD_CTX *ctx);
218 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
219 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
220 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
221 int (*cleanup) (EVP_MD_CTX *ctx);
223 int ctx_size; /* how big does the ctx->md_data need to be */
224 /* control function */
225 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
227 /* New structure members */
228 /* TODO(3.0): Remove above comment when legacy has gone */
231 CRYPTO_REF_COUNT refcnt;
233 OSSL_FUNC_digest_newctx_fn *newctx;
234 OSSL_FUNC_digest_init_fn *dinit;
235 OSSL_FUNC_digest_update_fn *dupdate;
236 OSSL_FUNC_digest_final_fn *dfinal;
237 OSSL_FUNC_digest_digest_fn *digest;
238 OSSL_FUNC_digest_freectx_fn *freectx;
239 OSSL_FUNC_digest_dupctx_fn *dupctx;
240 OSSL_FUNC_digest_get_params_fn *get_params;
241 OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
242 OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
243 OSSL_FUNC_digest_gettable_params_fn *gettable_params;
244 OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
245 OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
249 struct evp_cipher_st {
253 /* Default value for variable length ciphers */
257 /* Legacy structure members */
258 /* TODO(3.0): Remove these */
262 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
263 const unsigned char *iv, int enc);
264 /* encrypt/decrypt data */
265 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
266 const unsigned char *in, size_t inl);
268 int (*cleanup) (EVP_CIPHER_CTX *);
269 /* how big ctx->cipher_data needs to be */
271 /* Populate a ASN1_TYPE with parameters */
272 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
273 /* Get parameters from a ASN1_TYPE */
274 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
275 /* Miscellaneous operations */
276 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
277 /* Application data */
280 /* New structure members */
281 /* TODO(3.0): Remove above comment when legacy has gone */
284 CRYPTO_REF_COUNT refcnt;
286 OSSL_FUNC_cipher_newctx_fn *newctx;
287 OSSL_FUNC_cipher_encrypt_init_fn *einit;
288 OSSL_FUNC_cipher_decrypt_init_fn *dinit;
289 OSSL_FUNC_cipher_update_fn *cupdate;
290 OSSL_FUNC_cipher_final_fn *cfinal;
291 OSSL_FUNC_cipher_cipher_fn *ccipher;
292 OSSL_FUNC_cipher_freectx_fn *freectx;
293 OSSL_FUNC_cipher_dupctx_fn *dupctx;
294 OSSL_FUNC_cipher_get_params_fn *get_params;
295 OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
296 OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
297 OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
298 OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
299 OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
302 /* Macros to code block cipher wrappers */
304 /* Wrapper functions for each cipher mode */
306 #define EVP_C_DATA(kstruct, ctx) \
307 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
309 #define BLOCK_CIPHER_ecb_loop() \
311 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
312 if (inl < bl) return 1;\
314 for (i=0; i <= inl; i+=bl)
316 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
317 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
319 BLOCK_CIPHER_ecb_loop() \
320 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
324 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
326 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
327 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
329 while(inl>=EVP_MAXCHUNK) {\
330 int num = EVP_CIPHER_CTX_num(ctx);\
331 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
332 EVP_CIPHER_CTX_set_num(ctx, num);\
338 int num = EVP_CIPHER_CTX_num(ctx);\
339 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
340 EVP_CIPHER_CTX_set_num(ctx, num);\
345 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
346 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
348 while(inl>=EVP_MAXCHUNK) \
350 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_encrypting(ctx));\
356 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_encrypting(ctx));\
360 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
361 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
363 size_t chunk = EVP_MAXCHUNK;\
364 if (cbits == 1) chunk >>= 3;\
365 if (inl < chunk) chunk = inl;\
366 while (inl && inl >= chunk)\
368 int num = EVP_CIPHER_CTX_num(ctx);\
369 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
371 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
372 ? chunk*8 : chunk), \
373 &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
374 &num, EVP_CIPHER_CTX_encrypting(ctx));\
375 EVP_CIPHER_CTX_set_num(ctx, num);\
379 if (inl < chunk) chunk = inl;\
384 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
385 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
386 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
387 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
388 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
390 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
391 key_len, iv_len, flags, init_key, cleanup, \
392 set_asn1, get_asn1, ctrl) \
393 static const EVP_CIPHER cname##_##mode = { \
394 nid##_##nmode, block_size, key_len, iv_len, \
395 flags | EVP_CIPH_##MODE##_MODE, \
397 cname##_##mode##_cipher, \
404 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
406 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
407 iv_len, flags, init_key, cleanup, set_asn1, \
409 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
410 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
412 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
413 iv_len, cbits, flags, init_key, cleanup, \
414 set_asn1, get_asn1, ctrl) \
415 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
416 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
419 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
420 iv_len, cbits, flags, init_key, cleanup, \
421 set_asn1, get_asn1, ctrl) \
422 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
423 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
426 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
427 flags, init_key, cleanup, set_asn1, \
429 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
430 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
432 #define BLOCK_CIPHER_defs(cname, kstruct, \
433 nid, block_size, key_len, iv_len, cbits, flags, \
434 init_key, cleanup, set_asn1, get_asn1, ctrl) \
435 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
436 init_key, cleanup, set_asn1, get_asn1, ctrl) \
437 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
438 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
439 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
440 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
441 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
442 init_key, cleanup, set_asn1, get_asn1, ctrl)
445 #define BLOCK_CIPHER_defs(cname, kstruct, \
446 nid, block_size, key_len, iv_len, flags,\
447 init_key, cleanup, set_asn1, get_asn1, ctrl)\
448 static const EVP_CIPHER cname##_cbc = {\
449 nid##_cbc, block_size, key_len, iv_len, \
450 flags | EVP_CIPH_CBC_MODE,\
454 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
455 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
460 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
461 static const EVP_CIPHER cname##_cfb = {\
462 nid##_cfb64, 1, key_len, iv_len, \
463 flags | EVP_CIPH_CFB_MODE,\
467 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
468 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
473 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
474 static const EVP_CIPHER cname##_ofb = {\
475 nid##_ofb64, 1, key_len, iv_len, \
476 flags | EVP_CIPH_OFB_MODE,\
480 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
481 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
486 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
487 static const EVP_CIPHER cname##_ecb = {\
488 nid##_ecb, block_size, key_len, iv_len, \
489 flags | EVP_CIPH_ECB_MODE,\
493 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
494 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
499 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
502 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
503 block_size, key_len, iv_len, cbits, \
505 cleanup, set_asn1, get_asn1, ctrl) \
506 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
507 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
508 cbits, flags, init_key, cleanup, set_asn1, \
511 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
512 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
513 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
514 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
515 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
516 cipher##_init_key, NULL, NULL, NULL, NULL)
519 unsigned char iv[EVP_MAX_IV_LENGTH];
521 unsigned int tag_len;
522 } evp_cipher_aead_asn1_params;
524 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
525 evp_cipher_aead_asn1_params *params);
527 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
528 evp_cipher_aead_asn1_params *params);
531 * An EVP_PKEY can have the following states:
535 * type == EVP_PKEY_NONE && keymgmt == NULL
539 * (type != EVP_PKEY_NONE && pkey.ptr == NULL) ## legacy (libcrypto only)
540 * || (keymgmt != NULL && keydata == NULL) ## provider side
544 * (type != EVP_PKEY_NONE && pkey.ptr != NULL) ## legacy (libcrypto only)
545 * || (keymgmt != NULL && keydata != NULL) ## provider side
547 * The easiest way to detect a legacy key is:
549 * keymgmt == NULL && type != EVP_PKEY_NONE
551 * The easiest way to detect a provider side key is:
555 #define evp_pkey_is_blank(pk) \
556 ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
557 #define evp_pkey_is_typed(pk) \
558 ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
559 #define evp_pkey_is_assigned(pk) \
560 ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
561 #define evp_pkey_is_legacy(pk) \
562 ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
563 #define evp_pkey_is_provided(pk) \
564 ((pk)->keymgmt != NULL)
567 /* == Legacy attributes == */
573 * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
574 * a pointer to a low level key and possibly a pointer to an engine.
576 const EVP_PKEY_ASN1_METHOD *ameth;
578 ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
581 # ifndef OPENSSL_NO_RSA
582 struct rsa_st *rsa; /* RSA */
584 # ifndef OPENSSL_NO_DSA
585 struct dsa_st *dsa; /* DSA */
587 # ifndef OPENSSL_NO_DH
588 struct dh_st *dh; /* DH */
590 # ifndef OPENSSL_NO_EC
591 struct ec_key_st *ec; /* ECC */
592 ECX_KEY *ecx; /* X25519, X448, Ed25519, Ed448 */
597 /* == Common attributes == */
598 /* If these are modified, so must evp_pkey_downgrade() */
599 CRYPTO_REF_COUNT references;
601 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
604 CRYPTO_EX_DATA ex_data;
607 /* == Provider attributes == */
610 * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
611 * and a pointer to the provider side key data. This is never used at
612 * the same time as the legacy key data above.
614 EVP_KEYMGMT *keymgmt;
617 * If any libcrypto code does anything that may modify the keydata
618 * contents, this dirty counter must be incremented.
623 * To support transparent execution of operation in backends other
624 * than the "origin" key, we support transparent export/import to
625 * those providers, and maintain a cache of the imported keydata,
626 * so we don't need to redo the export/import every time we perform
627 * the same operation in that same provider.
628 * This requires that the "origin" backend (whether it's a legacy or a
629 * provider "origin") implements exports, and that the target provider
630 * has an EVP_KEYMGMT that implements import.
632 * The cache limit is set at 10 different providers using the same
633 * "origin". It's probably over the top, but is preferable to too
637 EVP_KEYMGMT *keymgmt;
639 } operation_cache[10];
641 * We keep a copy of that "origin"'s dirty count, so we know if the
642 * operation cache needs flushing.
644 size_t dirty_cnt_copy;
646 /* Cache of key object information */
654 #define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
655 ((ctx)->operation == EVP_PKEY_OP_SIGN \
656 || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
657 || (ctx)->operation == EVP_PKEY_OP_VERIFY \
658 || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
659 || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
661 #define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
662 ((ctx)->operation == EVP_PKEY_OP_DERIVE)
664 #define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
665 ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
666 || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
668 #define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
669 ((ctx)->operation == EVP_PKEY_OP_PARAMGEN \
670 || (ctx)->operation == EVP_PKEY_OP_KEYGEN)
672 #define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
673 ((ctx)->operation == EVP_PKEY_OP_ENCAPSULATE \
674 || (ctx)->operation == EVP_PKEY_OP_DECAPSULATE)
676 void openssl_add_all_ciphers_int(void);
677 void openssl_add_all_digests_int(void);
678 void evp_cleanup_int(void);
679 void evp_app_cleanup_int(void);
680 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OPENSSL_CTX *libctx,
681 EVP_KEYMGMT **keymgmt,
682 const char *propquery);
684 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
685 int evp_pkey_downgrade(EVP_PKEY *pk);
686 void evp_pkey_free_legacy(EVP_PKEY *x);
690 * KEYMGMT utility functions
694 * Key import structure and helper function, to be used as an export callback
696 struct evp_keymgmt_util_try_import_data_st {
697 EVP_KEYMGMT *keymgmt;
702 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
703 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
705 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
707 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
708 OSSL_CALLBACK *export_cb, void *export_cbarg);
709 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt);
710 size_t evp_keymgmt_util_find_operation_cache_index(EVP_PKEY *pk,
711 EVP_KEYMGMT *keymgmt);
712 void evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
713 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, size_t index,
714 EVP_KEYMGMT *keymgmt, void *keydata);
715 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
716 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
717 int selection, const OSSL_PARAM params[]);
718 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
719 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
720 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
721 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
722 void *genctx, OSSL_CALLBACK *cb, void *cbarg);
723 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
725 char *mdname, size_t mdname_sz);
728 * KEYMGMT provider interface functions
730 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
731 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
732 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
733 void *keydata, OSSL_PARAM params[]);
734 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
735 void *keydata, const OSSL_PARAM params[]);
736 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection);
737 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
739 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
740 const OSSL_PARAM params[]);
741 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
742 OSSL_CALLBACK *cb, void *cbarg);
743 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
745 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
746 const void *objref, size_t objref_sz);
748 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
749 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
751 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
752 const void *keydata1, const void *keydata2,
755 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
756 int selection, const OSSL_PARAM params[]);
757 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
759 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
760 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
761 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
763 int evp_keymgmt_copy(const EVP_KEYMGMT *keymgmt,
764 void *keydata_to, const void *keydata_from,
767 /* Pulling defines out of C source files */
769 #define EVP_RC4_KEY_SIZE 16
770 #ifndef TLS1_1_VERSION
771 # define TLS1_1_VERSION 0x0302
774 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
776 /* EVP_ENCODE_CTX flags */
777 /* Don't generate new lines when encoding */
778 #define EVP_ENCODE_CTX_NO_NEWLINES 1
779 /* Use the SRP base64 alphabet instead of the standard one */
780 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET 2
782 const EVP_CIPHER *evp_get_cipherbyname_ex(OPENSSL_CTX *libctx, const char *name);
783 const EVP_MD *evp_get_digestbyname_ex(OPENSSL_CTX *libctx, const char *name);
785 int pkcs5_pbkdf2_hmac_with_libctx(const char *pass, int passlen,
786 const unsigned char *salt, int saltlen,
787 int iter, const EVP_MD *digest, int keylen,
789 OPENSSL_CTX *libctx, const char *propq);
793 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
795 * Return 1 on success, 0 or negative for errors.
797 * In particular they return -2 if any of the params is not supported.
799 * They are not available in FIPS_MODULE as they depend on
800 * - EVP_PKEY_CTX_{get,set}_params()
801 * - EVP_PKEY_CTX_{gettable,settable}_params()
804 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
805 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
807 EVP_MD_CTX *evp_md_ctx_new_with_libctx(EVP_PKEY *pkey,
808 const ASN1_OCTET_STRING *id,
809 OPENSSL_CTX *libctx, const char *propq);
810 int evp_pkey_name2type(const char *name);
812 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len);
813 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id);
814 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len);
816 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
817 #endif /* !defined(FIPS_MODULE) */
818 void evp_method_store_flush(OPENSSL_CTX *libctx);
819 int evp_set_default_properties_int(OPENSSL_CTX *libctx, const char *propq,
822 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force);