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
22 * An EVP_PKEY can have the following support states:
24 * Supports legacy implementations only:
26 * engine != NULL || keytype == NULL
28 * Supports provided implementations:
30 * engine == NULL && keytype != NULL
32 #define evp_pkey_ctx_is_legacy(ctx) \
33 ((ctx)->engine != NULL || (ctx)->keytype == NULL)
34 #define evp_pkey_ctx_is_provided(ctx) \
35 (!evp_pkey_ctx_is_legacy(ctx))
37 struct evp_pkey_ctx_st {
38 /* Actual operation */
42 * Library context, property query, keytype and keymgmt associated with
56 EVP_KEYEXCH *exchange;
61 EVP_SIGNATURE *signature;
66 EVP_ASYM_CIPHER *cipher;
76 * Cached parameters. Inits of operations that depend on these should
77 * call evp_pkey_ctx_use_delayed_data() when the operation has been set
81 /* Distinguishing Identifier, ISO/IEC 15946-3, FIPS 196 */
82 char *dist_id_name; /* The name used with EVP_PKEY_CTX_ctrl_str() */
83 void *dist_id; /* The distinguishing ID itself */
84 size_t dist_id_len; /* The length of the distinguishing ID */
86 /* Indicators of what has been set. Keep them together! */
87 unsigned int dist_id_set : 1;
90 /* Application specific data, usually used by the callback */
93 EVP_PKEY_gen_cb *pkey_gencb;
94 /* implementation specific keygen data */
96 int keygen_info_count;
98 /* Legacy fields below */
100 /* EVP_PKEY identity */
102 /* Method associated with this operation */
103 const EVP_PKEY_METHOD *pmeth;
104 /* Engine that implements this method or NULL if builtin */
106 /* Key: may be NULL */
108 /* Peer key for key agreement, may be NULL */
110 /* Algorithm specific data */
112 /* Indicator if digest_custom needs to be called */
113 unsigned int flag_call_digest_custom:1;
115 * Used to support taking custody of memory in the case of a provider being
116 * used with the deprecated EVP_PKEY_CTX_set_rsa_keygen_pubexp() API. This
117 * member should NOT be used for any other purpose and should be removed
118 * when said deprecated API is excised completely.
121 } /* EVP_PKEY_CTX */ ;
123 #define EVP_PKEY_FLAG_DYNAMIC 1
125 struct evp_pkey_method_st {
128 int (*init) (EVP_PKEY_CTX *ctx);
129 int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
130 void (*cleanup) (EVP_PKEY_CTX *ctx);
131 int (*paramgen_init) (EVP_PKEY_CTX *ctx);
132 int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
133 int (*keygen_init) (EVP_PKEY_CTX *ctx);
134 int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
135 int (*sign_init) (EVP_PKEY_CTX *ctx);
136 int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
137 const unsigned char *tbs, size_t tbslen);
138 int (*verify_init) (EVP_PKEY_CTX *ctx);
139 int (*verify) (EVP_PKEY_CTX *ctx,
140 const unsigned char *sig, size_t siglen,
141 const unsigned char *tbs, size_t tbslen);
142 int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
143 int (*verify_recover) (EVP_PKEY_CTX *ctx,
144 unsigned char *rout, size_t *routlen,
145 const unsigned char *sig, size_t siglen);
146 int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
147 int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
149 int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
150 int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
152 int (*encrypt_init) (EVP_PKEY_CTX *ctx);
153 int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
154 const unsigned char *in, size_t inlen);
155 int (*decrypt_init) (EVP_PKEY_CTX *ctx);
156 int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
157 const unsigned char *in, size_t inlen);
158 int (*derive_init) (EVP_PKEY_CTX *ctx);
159 int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
160 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
161 int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
162 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
163 const unsigned char *tbs, size_t tbslen);
164 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
165 size_t siglen, const unsigned char *tbs,
167 int (*check) (EVP_PKEY *pkey);
168 int (*public_check) (EVP_PKEY *pkey);
169 int (*param_check) (EVP_PKEY *pkey);
171 int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
172 } /* EVP_PKEY_METHOD */ ;
174 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
176 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
178 const EVP_PKEY_METHOD *dh_pkey_method(void);
179 const EVP_PKEY_METHOD *dhx_pkey_method(void);
180 const EVP_PKEY_METHOD *dsa_pkey_method(void);
181 const EVP_PKEY_METHOD *ec_pkey_method(void);
182 const EVP_PKEY_METHOD *ecx25519_pkey_method(void);
183 const EVP_PKEY_METHOD *ecx448_pkey_method(void);
184 const EVP_PKEY_METHOD *ed25519_pkey_method(void);
185 const EVP_PKEY_METHOD *ed448_pkey_method(void);
186 const EVP_PKEY_METHOD *ossl_rsa_pkey_method(void);
187 const EVP_PKEY_METHOD *ossl_rsa_pss_pkey_method(void);
193 CRYPTO_REF_COUNT refcnt;
196 OSSL_FUNC_mac_newctx_fn *newctx;
197 OSSL_FUNC_mac_dupctx_fn *dupctx;
198 OSSL_FUNC_mac_freectx_fn *freectx;
199 OSSL_FUNC_mac_init_fn *init;
200 OSSL_FUNC_mac_update_fn *update;
201 OSSL_FUNC_mac_final_fn *final;
202 OSSL_FUNC_mac_gettable_params_fn *gettable_params;
203 OSSL_FUNC_mac_gettable_ctx_params_fn *gettable_ctx_params;
204 OSSL_FUNC_mac_settable_ctx_params_fn *settable_ctx_params;
205 OSSL_FUNC_mac_get_params_fn *get_params;
206 OSSL_FUNC_mac_get_ctx_params_fn *get_ctx_params;
207 OSSL_FUNC_mac_set_ctx_params_fn *set_ctx_params;
213 CRYPTO_REF_COUNT refcnt;
216 OSSL_FUNC_kdf_newctx_fn *newctx;
217 OSSL_FUNC_kdf_dupctx_fn *dupctx;
218 OSSL_FUNC_kdf_freectx_fn *freectx;
219 OSSL_FUNC_kdf_reset_fn *reset;
220 OSSL_FUNC_kdf_derive_fn *derive;
221 OSSL_FUNC_kdf_gettable_params_fn *gettable_params;
222 OSSL_FUNC_kdf_gettable_ctx_params_fn *gettable_ctx_params;
223 OSSL_FUNC_kdf_settable_ctx_params_fn *settable_ctx_params;
224 OSSL_FUNC_kdf_get_params_fn *get_params;
225 OSSL_FUNC_kdf_get_ctx_params_fn *get_ctx_params;
226 OSSL_FUNC_kdf_set_ctx_params_fn *set_ctx_params;
233 /* Legacy structure members */
234 /* TODO(3.0): Remove these */
238 int (*init) (EVP_MD_CTX *ctx);
239 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
240 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
241 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
242 int (*cleanup) (EVP_MD_CTX *ctx);
244 int ctx_size; /* how big does the ctx->md_data need to be */
245 /* control function */
246 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
248 /* New structure members */
249 /* TODO(3.0): Remove above comment when legacy has gone */
252 CRYPTO_REF_COUNT refcnt;
254 OSSL_FUNC_digest_newctx_fn *newctx;
255 OSSL_FUNC_digest_init_fn *dinit;
256 OSSL_FUNC_digest_update_fn *dupdate;
257 OSSL_FUNC_digest_final_fn *dfinal;
258 OSSL_FUNC_digest_digest_fn *digest;
259 OSSL_FUNC_digest_freectx_fn *freectx;
260 OSSL_FUNC_digest_dupctx_fn *dupctx;
261 OSSL_FUNC_digest_get_params_fn *get_params;
262 OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
263 OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
264 OSSL_FUNC_digest_gettable_params_fn *gettable_params;
265 OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
266 OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
270 struct evp_cipher_st {
274 /* Default value for variable length ciphers */
278 /* Legacy structure members */
279 /* TODO(3.0): Remove these */
283 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
284 const unsigned char *iv, int enc);
285 /* encrypt/decrypt data */
286 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
287 const unsigned char *in, size_t inl);
289 int (*cleanup) (EVP_CIPHER_CTX *);
290 /* how big ctx->cipher_data needs to be */
292 /* Populate a ASN1_TYPE with parameters */
293 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
294 /* Get parameters from a ASN1_TYPE */
295 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
296 /* Miscellaneous operations */
297 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
298 /* Application data */
301 /* New structure members */
302 /* TODO(3.0): Remove above comment when legacy has gone */
305 CRYPTO_REF_COUNT refcnt;
307 OSSL_FUNC_cipher_newctx_fn *newctx;
308 OSSL_FUNC_cipher_encrypt_init_fn *einit;
309 OSSL_FUNC_cipher_decrypt_init_fn *dinit;
310 OSSL_FUNC_cipher_update_fn *cupdate;
311 OSSL_FUNC_cipher_final_fn *cfinal;
312 OSSL_FUNC_cipher_cipher_fn *ccipher;
313 OSSL_FUNC_cipher_freectx_fn *freectx;
314 OSSL_FUNC_cipher_dupctx_fn *dupctx;
315 OSSL_FUNC_cipher_get_params_fn *get_params;
316 OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
317 OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
318 OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
319 OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
320 OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
323 /* Macros to code block cipher wrappers */
325 /* Wrapper functions for each cipher mode */
327 #define EVP_C_DATA(kstruct, ctx) \
328 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
330 #define BLOCK_CIPHER_ecb_loop() \
332 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
333 if (inl < bl) return 1;\
335 for (i=0; i <= inl; i+=bl)
337 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
338 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
340 BLOCK_CIPHER_ecb_loop() \
341 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
345 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
347 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
348 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
350 while(inl>=EVP_MAXCHUNK) {\
351 int num = EVP_CIPHER_CTX_num(ctx);\
352 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
353 EVP_CIPHER_CTX_set_num(ctx, num);\
359 int num = EVP_CIPHER_CTX_num(ctx);\
360 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
361 EVP_CIPHER_CTX_set_num(ctx, num);\
366 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
367 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
369 while(inl>=EVP_MAXCHUNK) \
371 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_encrypting(ctx));\
377 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_encrypting(ctx));\
381 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
382 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
384 size_t chunk = EVP_MAXCHUNK;\
385 if (cbits == 1) chunk >>= 3;\
386 if (inl < chunk) chunk = inl;\
387 while (inl && inl >= chunk)\
389 int num = EVP_CIPHER_CTX_num(ctx);\
390 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
392 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
393 ? chunk*8 : chunk), \
394 &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
395 &num, EVP_CIPHER_CTX_encrypting(ctx));\
396 EVP_CIPHER_CTX_set_num(ctx, num);\
400 if (inl < chunk) chunk = inl;\
405 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
406 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
407 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
408 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
409 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
411 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
412 key_len, iv_len, flags, init_key, cleanup, \
413 set_asn1, get_asn1, ctrl) \
414 static const EVP_CIPHER cname##_##mode = { \
415 nid##_##nmode, block_size, key_len, iv_len, \
416 flags | EVP_CIPH_##MODE##_MODE, \
418 cname##_##mode##_cipher, \
425 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
427 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
428 iv_len, flags, init_key, cleanup, set_asn1, \
430 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
431 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
433 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
434 iv_len, cbits, flags, init_key, cleanup, \
435 set_asn1, get_asn1, ctrl) \
436 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
437 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
440 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
441 iv_len, cbits, flags, init_key, cleanup, \
442 set_asn1, get_asn1, ctrl) \
443 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
444 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
447 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
448 flags, init_key, cleanup, set_asn1, \
450 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
451 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
453 #define BLOCK_CIPHER_defs(cname, kstruct, \
454 nid, block_size, key_len, iv_len, cbits, flags, \
455 init_key, cleanup, set_asn1, get_asn1, ctrl) \
456 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
457 init_key, cleanup, set_asn1, get_asn1, ctrl) \
458 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
459 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
460 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
461 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
462 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
463 init_key, cleanup, set_asn1, get_asn1, ctrl)
466 #define BLOCK_CIPHER_defs(cname, kstruct, \
467 nid, block_size, key_len, iv_len, flags,\
468 init_key, cleanup, set_asn1, get_asn1, ctrl)\
469 static const EVP_CIPHER cname##_cbc = {\
470 nid##_cbc, block_size, key_len, iv_len, \
471 flags | EVP_CIPH_CBC_MODE,\
475 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
476 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
481 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
482 static const EVP_CIPHER cname##_cfb = {\
483 nid##_cfb64, 1, key_len, iv_len, \
484 flags | EVP_CIPH_CFB_MODE,\
488 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
489 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
494 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
495 static const EVP_CIPHER cname##_ofb = {\
496 nid##_ofb64, 1, key_len, iv_len, \
497 flags | EVP_CIPH_OFB_MODE,\
501 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
502 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
507 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
508 static const EVP_CIPHER cname##_ecb = {\
509 nid##_ecb, block_size, key_len, iv_len, \
510 flags | EVP_CIPH_ECB_MODE,\
514 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
515 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
520 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
523 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
524 block_size, key_len, iv_len, cbits, \
526 cleanup, set_asn1, get_asn1, ctrl) \
527 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
528 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
529 cbits, flags, init_key, cleanup, set_asn1, \
532 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
533 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
534 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
535 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
536 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
537 cipher##_init_key, NULL, NULL, NULL, NULL)
540 unsigned char iv[EVP_MAX_IV_LENGTH];
542 unsigned int tag_len;
543 } evp_cipher_aead_asn1_params;
545 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
546 evp_cipher_aead_asn1_params *params);
548 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
549 evp_cipher_aead_asn1_params *params);
552 * An EVP_PKEY can have the following states:
556 * type == EVP_PKEY_NONE && keymgmt == NULL
560 * (type != EVP_PKEY_NONE && pkey.ptr == NULL) ## legacy (libcrypto only)
561 * || (keymgmt != NULL && keydata == NULL) ## provider side
565 * (type != EVP_PKEY_NONE && pkey.ptr != NULL) ## legacy (libcrypto only)
566 * || (keymgmt != NULL && keydata != NULL) ## provider side
568 * The easiest way to detect a legacy key is:
570 * keymgmt == NULL && type != EVP_PKEY_NONE
572 * The easiest way to detect a provider side key is:
576 #define evp_pkey_is_blank(pk) \
577 ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
578 #define evp_pkey_is_typed(pk) \
579 ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
580 #define evp_pkey_is_assigned(pk) \
581 ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
582 #define evp_pkey_is_legacy(pk) \
583 ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
584 #define evp_pkey_is_provided(pk) \
585 ((pk)->keymgmt != NULL)
588 /* == Legacy attributes == */
594 * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
595 * a pointer to a low level key and possibly a pointer to an engine.
597 const EVP_PKEY_ASN1_METHOD *ameth;
599 ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
602 struct rsa_st *rsa; /* RSA */
603 # ifndef OPENSSL_NO_DSA
604 struct dsa_st *dsa; /* DSA */
606 # ifndef OPENSSL_NO_DH
607 struct dh_st *dh; /* DH */
609 # ifndef OPENSSL_NO_EC
610 struct ec_key_st *ec; /* ECC */
611 ECX_KEY *ecx; /* X25519, X448, Ed25519, Ed448 */
616 /* == Common attributes == */
617 /* If these are modified, so must evp_pkey_downgrade() */
618 CRYPTO_REF_COUNT references;
620 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
623 CRYPTO_EX_DATA ex_data;
626 /* == Provider attributes == */
629 * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
630 * and a pointer to the provider side key data. This is never used at
631 * the same time as the legacy key data above.
633 EVP_KEYMGMT *keymgmt;
636 * If any libcrypto code does anything that may modify the keydata
637 * contents, this dirty counter must be incremented.
642 * To support transparent execution of operation in backends other
643 * than the "origin" key, we support transparent export/import to
644 * those providers, and maintain a cache of the imported keydata,
645 * so we don't need to redo the export/import every time we perform
646 * the same operation in that same provider.
647 * This requires that the "origin" backend (whether it's a legacy or a
648 * provider "origin") implements exports, and that the target provider
649 * has an EVP_KEYMGMT that implements import.
651 * The cache limit is set at 10 different providers using the same
652 * "origin". It's probably over the top, but is preferable to too
656 EVP_KEYMGMT *keymgmt;
658 } operation_cache[10];
660 * We keep a copy of that "origin"'s dirty count, so we know if the
661 * operation cache needs flushing.
663 size_t dirty_cnt_copy;
665 /* Cache of key object information */
673 #define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
674 ((ctx)->operation == EVP_PKEY_OP_SIGN \
675 || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
676 || (ctx)->operation == EVP_PKEY_OP_VERIFY \
677 || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
678 || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
680 #define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
681 ((ctx)->operation == EVP_PKEY_OP_DERIVE)
683 #define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
684 ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
685 || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
687 #define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
688 ((ctx)->operation == EVP_PKEY_OP_PARAMGEN \
689 || (ctx)->operation == EVP_PKEY_OP_KEYGEN)
691 #define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
692 ((ctx)->operation == EVP_PKEY_OP_ENCAPSULATE \
693 || (ctx)->operation == EVP_PKEY_OP_DECAPSULATE)
695 void openssl_add_all_ciphers_int(void);
696 void openssl_add_all_digests_int(void);
697 void evp_cleanup_int(void);
698 void evp_app_cleanup_int(void);
699 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
700 EVP_KEYMGMT **keymgmt,
701 const char *propquery);
703 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
704 int evp_pkey_downgrade(EVP_PKEY *pk);
705 void evp_pkey_free_legacy(EVP_PKEY *x);
709 * KEYMGMT utility functions
713 * Key import structure and helper function, to be used as an export callback
715 struct evp_keymgmt_util_try_import_data_st {
716 EVP_KEYMGMT *keymgmt;
721 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
722 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
724 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
726 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
727 OSSL_CALLBACK *export_cb, void *export_cbarg);
728 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt);
729 size_t evp_keymgmt_util_find_operation_cache_index(EVP_PKEY *pk,
730 EVP_KEYMGMT *keymgmt);
731 int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk, int locking);
732 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, size_t index,
733 EVP_KEYMGMT *keymgmt, void *keydata);
734 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
735 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
736 int selection, const OSSL_PARAM params[]);
737 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
738 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
739 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
740 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
741 void *genctx, OSSL_CALLBACK *cb, void *cbarg);
742 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
744 char *mdname, size_t mdname_sz);
747 * KEYMGMT provider interface functions
749 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
750 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
751 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
752 void *keydata, OSSL_PARAM params[]);
753 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
754 void *keydata, const OSSL_PARAM params[]);
755 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection);
756 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
758 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
759 const OSSL_PARAM params[]);
760 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
761 OSSL_CALLBACK *cb, void *cbarg);
762 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
764 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
765 const void *objref, size_t objref_sz);
767 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
768 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
770 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
771 const void *keydata1, const void *keydata2,
774 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
775 int selection, const OSSL_PARAM params[]);
776 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
778 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
779 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
780 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
782 int evp_keymgmt_copy(const EVP_KEYMGMT *keymgmt,
783 void *keydata_to, const void *keydata_from,
786 /* Pulling defines out of C source files */
788 #define EVP_RC4_KEY_SIZE 16
789 #ifndef TLS1_1_VERSION
790 # define TLS1_1_VERSION 0x0302
793 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
795 /* EVP_ENCODE_CTX flags */
796 /* Don't generate new lines when encoding */
797 #define EVP_ENCODE_CTX_NO_NEWLINES 1
798 /* Use the SRP base64 alphabet instead of the standard one */
799 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET 2
801 const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
803 const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
806 int pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
807 const unsigned char *salt, int saltlen, int iter,
808 const EVP_MD *digest, int keylen, unsigned char *out,
809 OSSL_LIB_CTX *libctx, const char *propq);
813 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
815 * Return 1 on success, 0 or negative for errors.
817 * In particular they return -2 if any of the params is not supported.
819 * They are not available in FIPS_MODULE as they depend on
820 * - EVP_PKEY_CTX_{get,set}_params()
821 * - EVP_PKEY_CTX_{gettable,settable}_params()
824 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
825 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
827 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
828 OSSL_LIB_CTX *libctx, const char *propq);
829 int evp_pkey_name2type(const char *name);
831 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len);
832 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id);
833 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len);
835 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
836 #endif /* !defined(FIPS_MODULE) */
837 void evp_method_store_flush(OSSL_LIB_CTX *libctx);
838 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
841 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force);