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 struct evp_md_ctx_st
{
15 const EVP_MD
*reqdigest
; /* The original requested digest */
17 ENGINE
*engine
; /* functional reference if 'digest' is
21 /* Public key context for sign/verify */
23 /* Update function: usually copied from EVP_MD */
24 int (*update
) (EVP_MD_CTX
*ctx
, const void *data
, size_t count
);
28 EVP_MD
*fetched_digest
;
31 struct evp_cipher_ctx_st
{
32 const EVP_CIPHER
*cipher
;
33 ENGINE
*engine
; /* functional reference if 'cipher' is
35 int encrypt
; /* encrypt or decrypt */
36 int buf_len
; /* number we have left */
37 unsigned char oiv
[EVP_MAX_IV_LENGTH
]; /* original iv */
38 unsigned char iv
[EVP_MAX_IV_LENGTH
]; /* working iv */
39 unsigned char buf
[EVP_MAX_BLOCK_LENGTH
]; /* saved partial block */
40 int num
; /* used by cfb/ofb/ctr mode */
41 /* FIXME: Should this even exist? It appears unused */
42 void *app_data
; /* application stuff */
43 int key_len
; /* May change for variable length cipher */
44 unsigned long flags
; /* Various flags */
45 void *cipher_data
; /* per EVP data */
48 unsigned char final
[EVP_MAX_BLOCK_LENGTH
]; /* possible final block */
52 EVP_CIPHER
*fetched_cipher
;
53 } /* EVP_CIPHER_CTX */ ;
55 struct evp_mac_ctx_st
{
56 const EVP_MAC
*meth
; /* Method structure */
57 void *data
; /* Individual method data */
60 struct evp_kdf_ctx_st
{
61 const EVP_KDF
*meth
; /* Method structure */
62 EVP_KDF_IMPL
*impl
; /* Algorithm-specific data */
65 struct evp_keymgmt_st
{
66 int id
; /* libcrypto internal */
70 CRYPTO_REF_COUNT refcnt
;
73 /* Domain parameter routines */
74 OSSL_OP_keymgmt_importdomparams_fn
*importdomparams
;
75 OSSL_OP_keymgmt_gendomparams_fn
*gendomparams
;
76 OSSL_OP_keymgmt_freedomparams_fn
*freedomparams
;
77 OSSL_OP_keymgmt_exportdomparams_fn
*exportdomparams
;
78 OSSL_OP_keymgmt_importdomparam_types_fn
*importdomparam_types
;
79 OSSL_OP_keymgmt_exportdomparam_types_fn
*exportdomparam_types
;
82 OSSL_OP_keymgmt_importkey_fn
*importkey
;
83 OSSL_OP_keymgmt_genkey_fn
*genkey
;
84 OSSL_OP_keymgmt_loadkey_fn
*loadkey
;
85 OSSL_OP_keymgmt_freekey_fn
*freekey
;
86 OSSL_OP_keymgmt_exportkey_fn
*exportkey
;
87 OSSL_OP_keymgmt_importkey_types_fn
*importkey_types
;
88 OSSL_OP_keymgmt_exportkey_types_fn
*exportkey_types
;
91 struct evp_keyexch_st
{
94 CRYPTO_REF_COUNT refcnt
;
97 OSSL_OP_keyexch_newctx_fn
*newctx
;
98 OSSL_OP_keyexch_init_fn
*init
;
99 OSSL_OP_keyexch_set_peer_fn
*set_peer
;
100 OSSL_OP_keyexch_derive_fn
*derive
;
101 OSSL_OP_keyexch_freectx_fn
*freectx
;
102 OSSL_OP_keyexch_dupctx_fn
*dupctx
;
103 OSSL_OP_keyexch_set_params_fn
*set_params
;
106 int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX
*ctx
, const char *pass
,
107 int passlen
, ASN1_TYPE
*param
,
108 const EVP_CIPHER
*c
, const EVP_MD
*md
,
111 struct evp_Encode_Ctx_st
{
112 /* number saved in a partial encode/decode */
115 * The length is either the output line length (in input bytes) or the
116 * shortest input line length that is ok. Once decoding begins, the
117 * length is adjusted up each time a longer line is decoded
121 unsigned char enc_data
[80];
122 /* number read on current line */
127 typedef struct evp_pbe_st EVP_PBE_CTL
;
128 DEFINE_STACK_OF(EVP_PBE_CTL
)
130 int is_partially_overlapping(const void *ptr1
, const void *ptr2
, int len
);
132 #include <openssl/ossl_typ.h>
133 #include <openssl/core.h>
135 void *evp_generic_fetch(OPENSSL_CTX
*ctx
, int operation_id
,
136 const char *algorithm
, const char *properties
,
137 void *(*new_method
)(const char *name
,
138 const OSSL_DISPATCH
*fns
,
139 OSSL_PROVIDER
*prov
),
140 int (*up_ref_method
)(void *),
141 void (*free_method
)(void *));
142 void evp_generic_do_all(OPENSSL_CTX
*libctx
, int operation_id
,
143 void (*user_fn
)(void *method
, void *arg
),
145 void *(*new_method
)(const char *name
,
146 const OSSL_DISPATCH
*fns
,
147 OSSL_PROVIDER
*prov
),
148 void (*free_method
)(void *));
150 /* Helper functions to avoid duplicating code */
153 * These methods implement different ways to pass a params array to the
154 * provider. They will return one of these values:
156 * -2 if the method doesn't come from a provider
157 * (evp_do_param will return this to the called)
158 * -1 if the provider doesn't offer the desired function
159 * (evp_do_param will raise an error and return 0)
160 * or the return value from the desired function
161 * (evp_do_param will return it to the caller)
163 int evp_do_ciph_getparams(const EVP_CIPHER
*ciph
, OSSL_PARAM params
[]);
164 int evp_do_ciph_ctx_getparams(const EVP_CIPHER
*ciph
, void *provctx
,
165 OSSL_PARAM params
[]);
166 int evp_do_ciph_ctx_setparams(const EVP_CIPHER
*ciph
, void *provctx
,
167 OSSL_PARAM params
[]);
169 OSSL_PARAM
*evp_pkey_to_param(EVP_PKEY
*pkey
, size_t *sz
);
171 #define M_check_autoarg(ctx, arg, arglen, err) \
172 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \
173 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
176 EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \
183 if (*arglen < pksize) { \
184 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \