2 * Copyright 2000-2019 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 /* EVP_MD_CTX related stuff */
12 #include <openssl/core_numbers.h>
14 #define EVP_CTRL_RET_UNSUPPORTED -1
17 struct evp_md_ctx_st {
18 const EVP_MD *reqdigest; /* The original requested digest */
20 ENGINE *engine; /* functional reference if 'digest' is
24 /* Public key context for sign/verify */
26 /* Update function: usually copied from EVP_MD */
27 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
31 EVP_MD *fetched_digest;
34 struct evp_cipher_ctx_st {
35 const EVP_CIPHER *cipher;
36 ENGINE *engine; /* functional reference if 'cipher' is
38 int encrypt; /* encrypt or decrypt */
39 int buf_len; /* number we have left */
40 unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */
41 unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */
42 unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */
43 int num; /* used by cfb/ofb/ctr mode */
44 /* FIXME: Should this even exist? It appears unused */
45 void *app_data; /* application stuff */
46 int key_len; /* May change for variable length cipher */
47 unsigned long flags; /* Various flags */
48 void *cipher_data; /* per EVP data */
51 unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */
55 EVP_CIPHER *fetched_cipher;
56 } /* EVP_CIPHER_CTX */ ;
58 struct evp_mac_ctx_st {
59 EVP_MAC *meth; /* Method structure */
60 void *data; /* Individual method data */
63 struct evp_kdf_ctx_st {
64 EVP_KDF *meth; /* Method structure */
65 void *data; /* Algorithm-specific data */
68 struct evp_keymgmt_st {
69 int id; /* libcrypto internal */
73 CRYPTO_REF_COUNT refcnt;
76 /* Domain parameter routines */
77 OSSL_OP_keymgmt_importdomparams_fn *importdomparams;
78 OSSL_OP_keymgmt_gendomparams_fn *gendomparams;
79 OSSL_OP_keymgmt_freedomparams_fn *freedomparams;
80 OSSL_OP_keymgmt_exportdomparams_fn *exportdomparams;
81 OSSL_OP_keymgmt_importdomparam_types_fn *importdomparam_types;
82 OSSL_OP_keymgmt_exportdomparam_types_fn *exportdomparam_types;
85 OSSL_OP_keymgmt_importkey_fn *importkey;
86 OSSL_OP_keymgmt_genkey_fn *genkey;
87 OSSL_OP_keymgmt_loadkey_fn *loadkey;
88 OSSL_OP_keymgmt_freekey_fn *freekey;
89 OSSL_OP_keymgmt_exportkey_fn *exportkey;
90 OSSL_OP_keymgmt_importkey_types_fn *importkey_types;
91 OSSL_OP_keymgmt_exportkey_types_fn *exportkey_types;
94 struct evp_keyexch_st {
97 CRYPTO_REF_COUNT refcnt;
100 EVP_KEYMGMT *keymgmt;
102 OSSL_OP_keyexch_newctx_fn *newctx;
103 OSSL_OP_keyexch_init_fn *init;
104 OSSL_OP_keyexch_set_peer_fn *set_peer;
105 OSSL_OP_keyexch_derive_fn *derive;
106 OSSL_OP_keyexch_freectx_fn *freectx;
107 OSSL_OP_keyexch_dupctx_fn *dupctx;
108 OSSL_OP_keyexch_set_params_fn *set_params;
111 int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
112 int passlen, ASN1_TYPE *param,
113 const EVP_CIPHER *c, const EVP_MD *md,
116 struct evp_Encode_Ctx_st {
117 /* number saved in a partial encode/decode */
120 * The length is either the output line length (in input bytes) or the
121 * shortest input line length that is ok. Once decoding begins, the
122 * length is adjusted up each time a longer line is decoded
126 unsigned char enc_data[80];
127 /* number read on current line */
132 typedef struct evp_pbe_st EVP_PBE_CTL;
133 DEFINE_STACK_OF(EVP_PBE_CTL)
135 int is_partially_overlapping(const void *ptr1, const void *ptr2, int len);
137 #include <openssl/ossl_typ.h>
138 #include <openssl/core.h>
140 void *evp_generic_fetch(OPENSSL_CTX *ctx, int operation_id,
141 const char *algorithm, const char *properties,
142 void *(*new_method)(const char *name,
143 const OSSL_DISPATCH *fns,
147 int (*up_ref_method)(void *),
148 void (*free_method)(void *));
149 void evp_generic_do_all(OPENSSL_CTX *libctx, int operation_id,
150 void (*user_fn)(void *method, void *arg),
152 void *(*new_method)(const char *name,
153 const OSSL_DISPATCH *fns,
157 void (*free_method)(void *));
159 /* Internal structure constructors for fetched methods */
160 EVP_MD *evp_md_new(void);
161 EVP_CIPHER *evp_cipher_new(void);
163 /* Helper functions to avoid duplicating code */
166 * These methods implement different ways to pass a params array to the
167 * provider. They will return one of these values:
169 * -2 if the method doesn't come from a provider
170 * (evp_do_param will return this to the called)
171 * -1 if the provider doesn't offer the desired function
172 * (evp_do_param will raise an error and return 0)
173 * or the return value from the desired function
174 * (evp_do_param will return it to the caller)
176 int evp_do_ciph_getparams(const EVP_CIPHER *ciph, OSSL_PARAM params[]);
177 int evp_do_ciph_ctx_getparams(const EVP_CIPHER *ciph, void *provctx,
178 OSSL_PARAM params[]);
179 int evp_do_ciph_ctx_setparams(const EVP_CIPHER *ciph, void *provctx,
180 OSSL_PARAM params[]);
181 int evp_do_md_getparams(const EVP_MD *md, OSSL_PARAM params[]);
182 int evp_do_md_ctx_getparams(const EVP_MD *md, void *provctx,
183 OSSL_PARAM params[]);
184 int evp_do_md_ctx_setparams(const EVP_MD *md, void *provctx,
185 OSSL_PARAM params[]);
187 OSSL_PARAM *evp_pkey_to_param(EVP_PKEY *pkey, size_t *sz);
189 #define M_check_autoarg(ctx, arg, arglen, err) \
190 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \
191 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
194 EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \
201 if (*arglen < pksize) { \
202 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \