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;
56 * Cached parameters. Inits of operations that depend on these should
57 * call evp_pkey_ctx_use_delayed_data() when the operation has been set
61 /* Distinguishing Identifier, ISO/IEC 15946-3, FIPS 196 */
62 char *dist_id_name; /* The name used with EVP_PKEY_CTX_ctrl_str() */
63 void *dist_id; /* The distinguishing ID itself */
64 size_t dist_id_len; /* The length of the distinguishing ID */
66 /* Indicators of what has been set. Keep them together! */
67 unsigned int dist_id_set : 1;
70 /* Application specific data, usually used by the callback */
73 EVP_PKEY_gen_cb *pkey_gencb;
74 /* implementation specific keygen data */
76 int keygen_info_count;
78 /* Legacy fields below */
80 /* EVP_PKEY identity */
82 /* Method associated with this operation */
83 const EVP_PKEY_METHOD *pmeth;
84 /* Engine that implements this method or NULL if builtin */
86 /* Key: may be NULL */
88 /* Peer key for key agreement, may be NULL */
90 /* Algorithm specific data */
92 /* Indicator if digest_custom needs to be called */
93 unsigned int flag_call_digest_custom:1;
94 } /* EVP_PKEY_CTX */ ;
96 #define EVP_PKEY_FLAG_DYNAMIC 1
98 struct evp_pkey_method_st {
101 int (*init) (EVP_PKEY_CTX *ctx);
102 int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
103 void (*cleanup) (EVP_PKEY_CTX *ctx);
104 int (*paramgen_init) (EVP_PKEY_CTX *ctx);
105 int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
106 int (*keygen_init) (EVP_PKEY_CTX *ctx);
107 int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
108 int (*sign_init) (EVP_PKEY_CTX *ctx);
109 int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
110 const unsigned char *tbs, size_t tbslen);
111 int (*verify_init) (EVP_PKEY_CTX *ctx);
112 int (*verify) (EVP_PKEY_CTX *ctx,
113 const unsigned char *sig, size_t siglen,
114 const unsigned char *tbs, size_t tbslen);
115 int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
116 int (*verify_recover) (EVP_PKEY_CTX *ctx,
117 unsigned char *rout, size_t *routlen,
118 const unsigned char *sig, size_t siglen);
119 int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
120 int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
122 int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
123 int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
125 int (*encrypt_init) (EVP_PKEY_CTX *ctx);
126 int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
127 const unsigned char *in, size_t inlen);
128 int (*decrypt_init) (EVP_PKEY_CTX *ctx);
129 int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
130 const unsigned char *in, size_t inlen);
131 int (*derive_init) (EVP_PKEY_CTX *ctx);
132 int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
133 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
134 int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
135 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
136 const unsigned char *tbs, size_t tbslen);
137 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
138 size_t siglen, const unsigned char *tbs,
140 int (*check) (EVP_PKEY *pkey);
141 int (*public_check) (EVP_PKEY *pkey);
142 int (*param_check) (EVP_PKEY *pkey);
144 int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
145 } /* EVP_PKEY_METHOD */ ;
147 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
149 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
151 const EVP_PKEY_METHOD *dh_pkey_method(void);
152 const EVP_PKEY_METHOD *dhx_pkey_method(void);
153 const EVP_PKEY_METHOD *dsa_pkey_method(void);
154 const EVP_PKEY_METHOD *ec_pkey_method(void);
155 const EVP_PKEY_METHOD *sm2_pkey_method(void);
156 const EVP_PKEY_METHOD *ecx25519_pkey_method(void);
157 const EVP_PKEY_METHOD *ecx448_pkey_method(void);
158 const EVP_PKEY_METHOD *ed25519_pkey_method(void);
159 const EVP_PKEY_METHOD *ed448_pkey_method(void);
160 const EVP_PKEY_METHOD *rsa_pkey_method(void);
161 const EVP_PKEY_METHOD *rsa_pss_pkey_method(void);
167 CRYPTO_REF_COUNT refcnt;
170 OSSL_FUNC_mac_newctx_fn *newctx;
171 OSSL_FUNC_mac_dupctx_fn *dupctx;
172 OSSL_FUNC_mac_freectx_fn *freectx;
173 OSSL_FUNC_mac_size_fn *size;
174 OSSL_FUNC_mac_init_fn *init;
175 OSSL_FUNC_mac_update_fn *update;
176 OSSL_FUNC_mac_final_fn *final;
177 OSSL_FUNC_mac_gettable_params_fn *gettable_params;
178 OSSL_FUNC_mac_gettable_ctx_params_fn *gettable_ctx_params;
179 OSSL_FUNC_mac_settable_ctx_params_fn *settable_ctx_params;
180 OSSL_FUNC_mac_get_params_fn *get_params;
181 OSSL_FUNC_mac_get_ctx_params_fn *get_ctx_params;
182 OSSL_FUNC_mac_set_ctx_params_fn *set_ctx_params;
188 CRYPTO_REF_COUNT refcnt;
191 OSSL_FUNC_kdf_newctx_fn *newctx;
192 OSSL_FUNC_kdf_dupctx_fn *dupctx;
193 OSSL_FUNC_kdf_freectx_fn *freectx;
194 OSSL_FUNC_kdf_reset_fn *reset;
195 OSSL_FUNC_kdf_derive_fn *derive;
196 OSSL_FUNC_kdf_gettable_params_fn *gettable_params;
197 OSSL_FUNC_kdf_gettable_ctx_params_fn *gettable_ctx_params;
198 OSSL_FUNC_kdf_settable_ctx_params_fn *settable_ctx_params;
199 OSSL_FUNC_kdf_get_params_fn *get_params;
200 OSSL_FUNC_kdf_get_ctx_params_fn *get_ctx_params;
201 OSSL_FUNC_kdf_set_ctx_params_fn *set_ctx_params;
208 /* Legacy structure members */
209 /* TODO(3.0): Remove these */
213 int (*init) (EVP_MD_CTX *ctx);
214 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
215 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
216 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
217 int (*cleanup) (EVP_MD_CTX *ctx);
219 int ctx_size; /* how big does the ctx->md_data need to be */
220 /* control function */
221 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
223 /* New structure members */
224 /* TODO(3.0): Remove above comment when legacy has gone */
227 CRYPTO_REF_COUNT refcnt;
229 OSSL_FUNC_digest_newctx_fn *newctx;
230 OSSL_FUNC_digest_init_fn *dinit;
231 OSSL_FUNC_digest_update_fn *dupdate;
232 OSSL_FUNC_digest_final_fn *dfinal;
233 OSSL_FUNC_digest_digest_fn *digest;
234 OSSL_FUNC_digest_freectx_fn *freectx;
235 OSSL_FUNC_digest_dupctx_fn *dupctx;
236 OSSL_FUNC_digest_get_params_fn *get_params;
237 OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
238 OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
239 OSSL_FUNC_digest_gettable_params_fn *gettable_params;
240 OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
241 OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
245 struct evp_cipher_st {
249 /* Default value for variable length ciphers */
253 /* Legacy structure members */
254 /* TODO(3.0): Remove these */
258 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
259 const unsigned char *iv, int enc);
260 /* encrypt/decrypt data */
261 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
262 const unsigned char *in, size_t inl);
264 int (*cleanup) (EVP_CIPHER_CTX *);
265 /* how big ctx->cipher_data needs to be */
267 /* Populate a ASN1_TYPE with parameters */
268 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
269 /* Get parameters from a ASN1_TYPE */
270 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
271 /* Miscellaneous operations */
272 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
273 /* Application data */
276 /* New structure members */
277 /* TODO(3.0): Remove above comment when legacy has gone */
280 CRYPTO_REF_COUNT refcnt;
282 OSSL_FUNC_cipher_newctx_fn *newctx;
283 OSSL_FUNC_cipher_encrypt_init_fn *einit;
284 OSSL_FUNC_cipher_decrypt_init_fn *dinit;
285 OSSL_FUNC_cipher_update_fn *cupdate;
286 OSSL_FUNC_cipher_final_fn *cfinal;
287 OSSL_FUNC_cipher_cipher_fn *ccipher;
288 OSSL_FUNC_cipher_freectx_fn *freectx;
289 OSSL_FUNC_cipher_dupctx_fn *dupctx;
290 OSSL_FUNC_cipher_get_params_fn *get_params;
291 OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
292 OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
293 OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
294 OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
295 OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
298 /* Macros to code block cipher wrappers */
300 /* Wrapper functions for each cipher mode */
302 #define EVP_C_DATA(kstruct, ctx) \
303 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
305 #define BLOCK_CIPHER_ecb_loop() \
307 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
308 if (inl < bl) return 1;\
310 for (i=0; i <= inl; i+=bl)
312 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
313 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
315 BLOCK_CIPHER_ecb_loop() \
316 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
320 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
322 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
323 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
325 while(inl>=EVP_MAXCHUNK) {\
326 int num = EVP_CIPHER_CTX_num(ctx);\
327 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
328 EVP_CIPHER_CTX_set_num(ctx, num);\
334 int num = EVP_CIPHER_CTX_num(ctx);\
335 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
336 EVP_CIPHER_CTX_set_num(ctx, num);\
341 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
342 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
344 while(inl>=EVP_MAXCHUNK) \
346 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_encrypting(ctx));\
352 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_encrypting(ctx));\
356 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
357 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
359 size_t chunk = EVP_MAXCHUNK;\
360 if (cbits == 1) chunk >>= 3;\
361 if (inl < chunk) chunk = inl;\
362 while (inl && inl >= chunk)\
364 int num = EVP_CIPHER_CTX_num(ctx);\
365 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
367 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
368 ? chunk*8 : chunk), \
369 &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
370 &num, EVP_CIPHER_CTX_encrypting(ctx));\
371 EVP_CIPHER_CTX_set_num(ctx, num);\
375 if (inl < chunk) chunk = inl;\
380 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
381 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
382 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
383 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
384 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
386 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
387 key_len, iv_len, flags, init_key, cleanup, \
388 set_asn1, get_asn1, ctrl) \
389 static const EVP_CIPHER cname##_##mode = { \
390 nid##_##nmode, block_size, key_len, iv_len, \
391 flags | EVP_CIPH_##MODE##_MODE, \
393 cname##_##mode##_cipher, \
400 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
402 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
403 iv_len, flags, init_key, cleanup, set_asn1, \
405 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
406 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
408 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
409 iv_len, cbits, flags, init_key, cleanup, \
410 set_asn1, get_asn1, ctrl) \
411 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
412 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
415 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
416 iv_len, cbits, flags, init_key, cleanup, \
417 set_asn1, get_asn1, ctrl) \
418 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
419 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
422 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
423 flags, init_key, cleanup, set_asn1, \
425 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
426 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
428 #define BLOCK_CIPHER_defs(cname, kstruct, \
429 nid, block_size, key_len, iv_len, cbits, flags, \
430 init_key, cleanup, set_asn1, get_asn1, ctrl) \
431 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
432 init_key, cleanup, set_asn1, get_asn1, ctrl) \
433 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
434 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
435 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
436 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
437 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
438 init_key, cleanup, set_asn1, get_asn1, ctrl)
441 #define BLOCK_CIPHER_defs(cname, kstruct, \
442 nid, block_size, key_len, iv_len, flags,\
443 init_key, cleanup, set_asn1, get_asn1, ctrl)\
444 static const EVP_CIPHER cname##_cbc = {\
445 nid##_cbc, block_size, key_len, iv_len, \
446 flags | EVP_CIPH_CBC_MODE,\
450 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
451 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
456 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
457 static const EVP_CIPHER cname##_cfb = {\
458 nid##_cfb64, 1, key_len, iv_len, \
459 flags | EVP_CIPH_CFB_MODE,\
463 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
464 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
469 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
470 static const EVP_CIPHER cname##_ofb = {\
471 nid##_ofb64, 1, key_len, iv_len, \
472 flags | EVP_CIPH_OFB_MODE,\
476 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
477 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
482 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
483 static const EVP_CIPHER cname##_ecb = {\
484 nid##_ecb, block_size, key_len, iv_len, \
485 flags | EVP_CIPH_ECB_MODE,\
489 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
490 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
495 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
498 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
499 block_size, key_len, iv_len, cbits, \
501 cleanup, set_asn1, get_asn1, ctrl) \
502 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
503 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
504 cbits, flags, init_key, cleanup, set_asn1, \
507 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
508 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
509 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
510 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
511 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
512 cipher##_init_key, NULL, NULL, NULL, NULL)
515 unsigned char iv[EVP_MAX_IV_LENGTH];
517 unsigned int tag_len;
518 } evp_cipher_aead_asn1_params;
520 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
521 evp_cipher_aead_asn1_params *params);
523 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
524 evp_cipher_aead_asn1_params *params);
527 * An EVP_PKEY can have the following states:
531 * type == EVP_PKEY_NONE && keymgmt == NULL
535 * (type != EVP_PKEY_NONE && pkey.ptr == NULL) ## legacy (libcrypto only)
536 * || (keymgmt != NULL && keydata == NULL) ## provider side
540 * (type != EVP_PKEY_NONE && pkey.ptr != NULL) ## legacy (libcrypto only)
541 * || (keymgmt != NULL && keydata != NULL) ## provider side
543 * The easiest way to detect a legacy key is:
545 * keymgmt == NULL && type != EVP_PKEY_NONE
547 * The easiest way to detect a provider side key is:
551 #define evp_pkey_is_blank(pk) \
552 ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
553 #define evp_pkey_is_typed(pk) \
554 ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
555 #define evp_pkey_is_assigned(pk) \
556 ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
557 #define evp_pkey_is_legacy(pk) \
558 ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
559 #define evp_pkey_is_provided(pk) \
560 ((pk)->keymgmt != NULL)
563 /* == Legacy attributes == */
569 * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
570 * a pointer to a low level key and possibly a pointer to an engine.
572 const EVP_PKEY_ASN1_METHOD *ameth;
574 ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
577 # ifndef OPENSSL_NO_RSA
578 struct rsa_st *rsa; /* RSA */
580 # ifndef OPENSSL_NO_DSA
581 struct dsa_st *dsa; /* DSA */
583 # ifndef OPENSSL_NO_DH
584 struct dh_st *dh; /* DH */
586 # ifndef OPENSSL_NO_EC
587 struct ec_key_st *ec; /* ECC */
588 ECX_KEY *ecx; /* X25519, X448, Ed25519, Ed448 */
593 /* == Common attributes == */
594 /* If these are modified, so must evp_pkey_downgrade() */
595 CRYPTO_REF_COUNT references;
597 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
600 CRYPTO_EX_DATA ex_data;
603 /* == Provider attributes == */
606 * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
607 * and a pointer to the provider side key data. This is never used at
608 * the same time as the legacy key data above.
610 EVP_KEYMGMT *keymgmt;
613 * If any libcrypto code does anything that may modify the keydata
614 * contents, this dirty counter must be incremented.
619 * To support transparent execution of operation in backends other
620 * than the "origin" key, we support transparent export/import to
621 * those providers, and maintain a cache of the imported keydata,
622 * so we don't need to redo the export/import every time we perform
623 * the same operation in that same provider.
624 * This requires that the "origin" backend (whether it's a legacy or a
625 * provider "origin") implements exports, and that the target provider
626 * has an EVP_KEYMGMT that implements import.
628 * The cache limit is set at 10 different providers using the same
629 * "origin". It's probably over the top, but is preferable to too
633 EVP_KEYMGMT *keymgmt;
635 } operation_cache[10];
637 * We keep a copy of that "origin"'s dirty count, so we know if the
638 * operation cache needs flushing.
640 size_t dirty_cnt_copy;
642 /* Cache of key object information */
650 #define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
651 ((ctx)->operation == EVP_PKEY_OP_SIGN \
652 || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
653 || (ctx)->operation == EVP_PKEY_OP_VERIFY \
654 || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
655 || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
657 #define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
658 ((ctx)->operation == EVP_PKEY_OP_DERIVE)
660 #define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
661 ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
662 || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
664 #define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
665 ((ctx)->operation == EVP_PKEY_OP_PARAMGEN \
666 || (ctx)->operation == EVP_PKEY_OP_KEYGEN)
668 void openssl_add_all_ciphers_int(void);
669 void openssl_add_all_digests_int(void);
670 void evp_cleanup_int(void);
671 void evp_app_cleanup_int(void);
672 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OPENSSL_CTX *libctx,
673 EVP_KEYMGMT **keymgmt,
674 const char *propquery);
676 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
677 int evp_pkey_downgrade(EVP_PKEY *pk);
678 void evp_pkey_free_legacy(EVP_PKEY *x);
682 * KEYMGMT utility functions
686 * Key import structure and helper function, to be used as an export callback
688 struct evp_keymgmt_util_try_import_data_st {
689 EVP_KEYMGMT *keymgmt;
694 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
695 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
697 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
699 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt);
700 size_t evp_keymgmt_util_find_operation_cache_index(EVP_PKEY *pk,
701 EVP_KEYMGMT *keymgmt);
702 void evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
703 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, size_t index,
704 EVP_KEYMGMT *keymgmt, void *keydata);
705 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
706 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
707 int selection, const OSSL_PARAM params[]);
708 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
709 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
710 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
711 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
712 void *genctx, OSSL_CALLBACK *cb, void *cbarg);
713 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
715 char *mdname, size_t mdname_sz);
718 * KEYMGMT provider interface functions
720 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
721 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
722 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
723 void *keydata, OSSL_PARAM params[]);
724 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
725 void *keydata, const OSSL_PARAM params[]);
726 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection);
727 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
729 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
730 const OSSL_PARAM params[]);
731 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
732 OSSL_CALLBACK *cb, void *cbarg);
733 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
735 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
736 const void *objref, size_t objref_sz);
738 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
739 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
741 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
742 const void *keydata1, const void *keydata2,
745 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
746 int selection, const OSSL_PARAM params[]);
747 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
749 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
750 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
751 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
753 int evp_keymgmt_copy(const EVP_KEYMGMT *keymgmt,
754 void *keydata_to, const void *keydata_from,
757 /* Pulling defines out of C source files */
759 #define EVP_RC4_KEY_SIZE 16
760 #ifndef TLS1_1_VERSION
761 # define TLS1_1_VERSION 0x0302
764 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
766 /* EVP_ENCODE_CTX flags */
767 /* Don't generate new lines when encoding */
768 #define EVP_ENCODE_CTX_NO_NEWLINES 1
769 /* Use the SRP base64 alphabet instead of the standard one */
770 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET 2
772 const EVP_CIPHER *evp_get_cipherbyname_ex(OPENSSL_CTX *libctx, const char *name);
773 const EVP_MD *evp_get_digestbyname_ex(OPENSSL_CTX *libctx, const char *name);
775 int pkcs5_pbkdf2_hmac_with_libctx(const char *pass, int passlen,
776 const unsigned char *salt, int saltlen,
777 int iter, const EVP_MD *digest, int keylen,
779 OPENSSL_CTX *libctx, const char *propq);
783 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
785 * Return 1 on success, 0 or negative for errors.
787 * In particular they return -2 if any of the params is not supported.
789 * They are not available in FIPS_MODULE as they depend on
790 * - EVP_PKEY_CTX_{get,set}_params()
791 * - EVP_PKEY_CTX_{gettable,settable}_params()
794 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
795 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
797 EVP_MD_CTX *evp_md_ctx_new_with_libctx(EVP_PKEY *pkey,
798 const ASN1_OCTET_STRING *id,
799 OPENSSL_CTX *libctx, const char *propq);
800 int evp_pkey_name2type(const char *name);
802 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len);
803 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id);
804 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len);
806 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
807 #endif /* !defined(FIPS_MODULE) */
808 void evp_method_store_flush(OPENSSL_CTX *libctx);
809 int evp_set_default_properties_int(OPENSSL_CTX *libctx, const char *propq,
812 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force);