2 * Copyright 2000-2024 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/core_dispatch.h>
11 #include "internal/refcount.h"
13 #define EVP_CTRL_RET_UNSUPPORTED -1
16 struct evp_md_ctx_st {
17 const EVP_MD *reqdigest; /* The original requested digest */
19 ENGINE *engine; /* functional reference if 'digest' is
23 /* Public key context for sign/verify */
25 /* Update function: usually copied from EVP_MD */
26 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
29 * Opaque ctx returned from a providers digest algorithm implementation
30 * OSSL_FUNC_digest_newctx()
33 EVP_MD *fetched_digest;
36 struct evp_cipher_ctx_st {
37 const EVP_CIPHER *cipher;
38 ENGINE *engine; /* functional reference if 'cipher' is
40 int encrypt; /* encrypt or decrypt */
41 int buf_len; /* number we have left */
42 unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */
43 unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */
44 unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */
45 int num; /* used by cfb/ofb/ctr mode */
46 /* FIXME: Should this even exist? It appears unused */
47 void *app_data; /* application stuff */
48 int key_len; /* May change for variable length cipher */
49 int iv_len; /* IV length */
50 unsigned long flags; /* Various flags */
51 void *cipher_data; /* per EVP data */
54 unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */
57 * Opaque ctx returned from a providers cipher algorithm implementation
58 * OSSL_FUNC_cipher_newctx()
61 EVP_CIPHER *fetched_cipher;
62 } /* EVP_CIPHER_CTX */ ;
64 struct evp_mac_ctx_st {
65 EVP_MAC *meth; /* Method structure */
67 * Opaque ctx returned from a providers MAC algorithm implementation
68 * OSSL_FUNC_mac_newctx()
73 struct evp_kdf_ctx_st {
74 EVP_KDF *meth; /* Method structure */
76 * Opaque ctx returned from a providers KDF algorithm implementation
77 * OSSL_FUNC_kdf_newctx()
82 struct evp_rand_ctx_st {
83 EVP_RAND *meth; /* Method structure */
85 * Opaque ctx returned from a providers rand algorithm implementation
86 * OSSL_FUNC_rand_newctx()
89 EVP_RAND_CTX *parent; /* Parent EVP_RAND or NULL if none */
90 CRYPTO_REF_COUNT refcnt; /* Context reference count */
91 CRYPTO_RWLOCK *refcnt_lock;
92 } /* EVP_RAND_CTX */ ;
94 struct evp_keymgmt_st {
95 int id; /* libcrypto internal */
98 /* NID for the legacy alg if there is one */
101 const char *description;
103 CRYPTO_REF_COUNT refcnt;
105 /* Constructor(s), destructor, information */
106 OSSL_FUNC_keymgmt_new_fn *new;
107 OSSL_FUNC_keymgmt_free_fn *free;
108 OSSL_FUNC_keymgmt_get_params_fn *get_params;
109 OSSL_FUNC_keymgmt_gettable_params_fn *gettable_params;
110 OSSL_FUNC_keymgmt_set_params_fn *set_params;
111 OSSL_FUNC_keymgmt_settable_params_fn *settable_params;
113 /* Generation, a complex constructor */
114 OSSL_FUNC_keymgmt_gen_init_fn *gen_init;
115 OSSL_FUNC_keymgmt_gen_set_template_fn *gen_set_template;
116 OSSL_FUNC_keymgmt_gen_set_params_fn *gen_set_params;
117 OSSL_FUNC_keymgmt_gen_settable_params_fn *gen_settable_params;
118 OSSL_FUNC_keymgmt_gen_fn *gen;
119 OSSL_FUNC_keymgmt_gen_cleanup_fn *gen_cleanup;
121 OSSL_FUNC_keymgmt_load_fn *load;
123 /* Key object checking */
124 OSSL_FUNC_keymgmt_query_operation_name_fn *query_operation_name;
125 OSSL_FUNC_keymgmt_has_fn *has;
126 OSSL_FUNC_keymgmt_validate_fn *validate;
127 OSSL_FUNC_keymgmt_match_fn *match;
129 /* Import and export routines */
130 OSSL_FUNC_keymgmt_import_fn *import;
131 OSSL_FUNC_keymgmt_import_types_fn *import_types;
132 OSSL_FUNC_keymgmt_import_types_ex_fn *import_types_ex;
133 OSSL_FUNC_keymgmt_export_fn *export;
134 OSSL_FUNC_keymgmt_export_types_fn *export_types;
135 OSSL_FUNC_keymgmt_export_types_ex_fn *export_types_ex;
136 OSSL_FUNC_keymgmt_dup_fn *dup;
137 } /* EVP_KEYMGMT */ ;
139 struct evp_keyexch_st {
142 const char *description;
144 CRYPTO_REF_COUNT refcnt;
146 OSSL_FUNC_keyexch_newctx_fn *newctx;
147 OSSL_FUNC_keyexch_init_fn *init;
148 OSSL_FUNC_keyexch_set_peer_fn *set_peer;
149 OSSL_FUNC_keyexch_derive_fn *derive;
150 OSSL_FUNC_keyexch_freectx_fn *freectx;
151 OSSL_FUNC_keyexch_dupctx_fn *dupctx;
152 OSSL_FUNC_keyexch_set_ctx_params_fn *set_ctx_params;
153 OSSL_FUNC_keyexch_settable_ctx_params_fn *settable_ctx_params;
154 OSSL_FUNC_keyexch_get_ctx_params_fn *get_ctx_params;
155 OSSL_FUNC_keyexch_gettable_ctx_params_fn *gettable_ctx_params;
158 struct evp_signature_st {
161 const char *description;
163 CRYPTO_REF_COUNT refcnt;
165 OSSL_FUNC_signature_newctx_fn *newctx;
166 OSSL_FUNC_signature_sign_init_fn *sign_init;
167 OSSL_FUNC_signature_sign_fn *sign;
168 OSSL_FUNC_signature_verify_init_fn *verify_init;
169 OSSL_FUNC_signature_verify_fn *verify;
170 OSSL_FUNC_signature_verify_recover_init_fn *verify_recover_init;
171 OSSL_FUNC_signature_verify_recover_fn *verify_recover;
172 OSSL_FUNC_signature_digest_sign_init_fn *digest_sign_init;
173 OSSL_FUNC_signature_digest_sign_update_fn *digest_sign_update;
174 OSSL_FUNC_signature_digest_sign_final_fn *digest_sign_final;
175 OSSL_FUNC_signature_digest_sign_fn *digest_sign;
176 OSSL_FUNC_signature_digest_verify_init_fn *digest_verify_init;
177 OSSL_FUNC_signature_digest_verify_update_fn *digest_verify_update;
178 OSSL_FUNC_signature_digest_verify_final_fn *digest_verify_final;
179 OSSL_FUNC_signature_digest_verify_fn *digest_verify;
180 OSSL_FUNC_signature_freectx_fn *freectx;
181 OSSL_FUNC_signature_dupctx_fn *dupctx;
182 OSSL_FUNC_signature_get_ctx_params_fn *get_ctx_params;
183 OSSL_FUNC_signature_gettable_ctx_params_fn *gettable_ctx_params;
184 OSSL_FUNC_signature_set_ctx_params_fn *set_ctx_params;
185 OSSL_FUNC_signature_settable_ctx_params_fn *settable_ctx_params;
186 OSSL_FUNC_signature_get_ctx_md_params_fn *get_ctx_md_params;
187 OSSL_FUNC_signature_gettable_ctx_md_params_fn *gettable_ctx_md_params;
188 OSSL_FUNC_signature_set_ctx_md_params_fn *set_ctx_md_params;
189 OSSL_FUNC_signature_settable_ctx_md_params_fn *settable_ctx_md_params;
190 } /* EVP_SIGNATURE */;
192 struct evp_asym_cipher_st {
195 const char *description;
197 CRYPTO_REF_COUNT refcnt;
199 OSSL_FUNC_asym_cipher_newctx_fn *newctx;
200 OSSL_FUNC_asym_cipher_encrypt_init_fn *encrypt_init;
201 OSSL_FUNC_asym_cipher_encrypt_fn *encrypt;
202 OSSL_FUNC_asym_cipher_decrypt_init_fn *decrypt_init;
203 OSSL_FUNC_asym_cipher_decrypt_fn *decrypt;
204 OSSL_FUNC_asym_cipher_freectx_fn *freectx;
205 OSSL_FUNC_asym_cipher_dupctx_fn *dupctx;
206 OSSL_FUNC_asym_cipher_get_ctx_params_fn *get_ctx_params;
207 OSSL_FUNC_asym_cipher_gettable_ctx_params_fn *gettable_ctx_params;
208 OSSL_FUNC_asym_cipher_set_ctx_params_fn *set_ctx_params;
209 OSSL_FUNC_asym_cipher_settable_ctx_params_fn *settable_ctx_params;
210 } /* EVP_ASYM_CIPHER */;
215 const char *description;
217 CRYPTO_REF_COUNT refcnt;
219 OSSL_FUNC_kem_newctx_fn *newctx;
220 OSSL_FUNC_kem_encapsulate_init_fn *encapsulate_init;
221 OSSL_FUNC_kem_encapsulate_fn *encapsulate;
222 OSSL_FUNC_kem_decapsulate_init_fn *decapsulate_init;
223 OSSL_FUNC_kem_decapsulate_fn *decapsulate;
224 OSSL_FUNC_kem_freectx_fn *freectx;
225 OSSL_FUNC_kem_dupctx_fn *dupctx;
226 OSSL_FUNC_kem_get_ctx_params_fn *get_ctx_params;
227 OSSL_FUNC_kem_gettable_ctx_params_fn *gettable_ctx_params;
228 OSSL_FUNC_kem_set_ctx_params_fn *set_ctx_params;
229 OSSL_FUNC_kem_settable_ctx_params_fn *settable_ctx_params;
230 OSSL_FUNC_kem_auth_encapsulate_init_fn *auth_encapsulate_init;
231 OSSL_FUNC_kem_auth_decapsulate_init_fn *auth_decapsulate_init;
234 int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
235 int passlen, ASN1_TYPE *param,
236 const EVP_CIPHER *c, const EVP_MD *md,
238 int PKCS5_v2_PBKDF2_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass,
239 int passlen, ASN1_TYPE *param,
240 const EVP_CIPHER *c, const EVP_MD *md,
241 int en_de, OSSL_LIB_CTX *libctx, const char *propq);
243 struct evp_Encode_Ctx_st {
244 /* number saved in a partial encode/decode */
247 * The length is either the output line length (in input bytes) or the
248 * shortest input line length that is ok. Once decoding begins, the
249 * length is adjusted up each time a longer line is decoded
253 unsigned char enc_data[80];
254 /* number read on current line */
259 typedef struct evp_pbe_st EVP_PBE_CTL;
260 DEFINE_STACK_OF(EVP_PBE_CTL)
262 int ossl_is_partially_overlapping(const void *ptr1, const void *ptr2, int len);
264 #include <openssl/types.h>
265 #include <openssl/core.h>
267 void *evp_generic_fetch(OSSL_LIB_CTX *ctx, int operation_id,
268 const char *name, const char *properties,
269 void *(*new_method)(int name_id,
270 const OSSL_ALGORITHM *algodef,
271 OSSL_PROVIDER *prov),
272 int (*up_ref_method)(void *),
273 void (*free_method)(void *));
274 void *evp_generic_fetch_from_prov(OSSL_PROVIDER *prov, int operation_id,
275 const char *name, const char *properties,
276 void *(*new_method)(int name_id,
277 const OSSL_ALGORITHM *algodef,
278 OSSL_PROVIDER *prov),
279 int (*up_ref_method)(void *),
280 void (*free_method)(void *));
281 void evp_generic_do_all_prefetched(OSSL_LIB_CTX *libctx, int operation_id,
282 void (*user_fn)(void *method, void *arg),
284 void evp_generic_do_all(OSSL_LIB_CTX *libctx, int operation_id,
285 void (*user_fn)(void *method, void *arg),
287 void *(*new_method)(int name_id,
288 const OSSL_ALGORITHM *algodef,
289 OSSL_PROVIDER *prov),
290 int (*up_ref_method)(void *),
291 void (*free_method)(void *));
293 /* Internal fetchers for method types that are to be combined with others */
294 EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OSSL_LIB_CTX *ctx, int name_id,
295 const char *properties);
296 EVP_SIGNATURE *evp_signature_fetch_from_prov(OSSL_PROVIDER *prov,
298 const char *properties);
299 EVP_ASYM_CIPHER *evp_asym_cipher_fetch_from_prov(OSSL_PROVIDER *prov,
301 const char *properties);
302 EVP_KEYEXCH *evp_keyexch_fetch_from_prov(OSSL_PROVIDER *prov,
304 const char *properties);
305 EVP_KEM *evp_kem_fetch_from_prov(OSSL_PROVIDER *prov,
307 const char *properties);
309 /* Internal structure constructors for fetched methods */
310 EVP_MD *evp_md_new(void);
311 EVP_CIPHER *evp_cipher_new(void);
313 int evp_cipher_get_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
314 evp_cipher_aead_asn1_params *asn1_params);
315 int evp_cipher_set_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
316 evp_cipher_aead_asn1_params *asn1_params);
318 /* Helper functions to avoid duplicating code */
321 * These methods implement different ways to pass a params array to the
322 * provider. They will return one of these values:
324 * -2 if the method doesn't come from a provider
325 * (evp_do_param will return this to the called)
326 * -1 if the provider doesn't offer the desired function
327 * (evp_do_param will raise an error and return 0)
328 * or the return value from the desired function
329 * (evp_do_param will return it to the caller)
331 int evp_do_ciph_getparams(const EVP_CIPHER *ciph, OSSL_PARAM params[]);
332 int evp_do_ciph_ctx_getparams(const EVP_CIPHER *ciph, void *provctx,
333 OSSL_PARAM params[]);
334 int evp_do_ciph_ctx_setparams(const EVP_CIPHER *ciph, void *provctx,
335 OSSL_PARAM params[]);
336 int evp_do_md_getparams(const EVP_MD *md, OSSL_PARAM params[]);
337 int evp_do_md_ctx_getparams(const EVP_MD *md, void *provctx,
338 OSSL_PARAM params[]);
339 int evp_do_md_ctx_setparams(const EVP_MD *md, void *provctx,
340 OSSL_PARAM params[]);
342 OSSL_PARAM *evp_pkey_to_param(EVP_PKEY *pkey, size_t *sz);
344 #define M_check_autoarg(ctx, arg, arglen, err) \
345 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \
346 size_t pksize = (size_t)EVP_PKEY_get_size(ctx->pkey); \
349 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \
356 if (*arglen < pksize) { \
357 ERR_raise(ERR_LIB_EVP, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \
362 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx);
363 void evp_cipher_free_int(EVP_CIPHER *md);
364 void evp_md_free_int(EVP_MD *md);
366 /* OSSL_PROVIDER * is only used to get the library context */
367 int evp_is_a(OSSL_PROVIDER *prov, int number,
368 const char *legacy_name, const char *name);
369 int evp_names_do_all(OSSL_PROVIDER *prov, int number,
370 void (*fn)(const char *name, void *data),
372 int evp_cipher_cache_constants(EVP_CIPHER *cipher);