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_keyexch_st {
67 CRYPTO_REF_COUNT refcnt;
70 OSSL_OP_keyexch_newctx_fn *newctx;
71 OSSL_OP_keyexch_init_fn *init;
72 OSSL_OP_keyexch_set_peer_fn *set_peer;
73 OSSL_OP_keyexch_derive_fn *derive;
74 OSSL_OP_keyexch_freectx_fn *freectx;
75 OSSL_OP_keyexch_dupctx_fn *dupctx;
79 int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
80 int passlen, ASN1_TYPE *param,
81 const EVP_CIPHER *c, const EVP_MD *md,
84 struct evp_Encode_Ctx_st {
85 /* number saved in a partial encode/decode */
88 * The length is either the output line length (in input bytes) or the
89 * shortest input line length that is ok. Once decoding begins, the
90 * length is adjusted up each time a longer line is decoded
94 unsigned char enc_data[80];
95 /* number read on current line */
100 typedef struct evp_pbe_st EVP_PBE_CTL;
101 DEFINE_STACK_OF(EVP_PBE_CTL)
103 int is_partially_overlapping(const void *ptr1, const void *ptr2, int len);
105 #include <openssl/ossl_typ.h>
106 #include <openssl/core.h>
108 void *evp_generic_fetch(OPENSSL_CTX *ctx, int operation_id,
109 const char *algorithm, const char *properties,
110 void *(*new_method)(const OSSL_DISPATCH *fns,
111 OSSL_PROVIDER *prov),
112 int (*up_ref_method)(void *),
113 void (*free_method)(void *));
115 /* Helper functions to avoid duplicating code */
118 * These methods implement different ways to pass a params array to the
119 * provider. They will return one of these values:
121 * -2 if the method doesn't come from a provider
122 * (evp_do_param will return this to the called)
123 * -1 if the provider doesn't offer the desired function
124 * (evp_do_param will raise an error and return 0)
125 * or the return value from the desired function
126 * (evp_do_param will return it to the caller)
128 int evp_do_ciph_getparams(const EVP_CIPHER *ciph, OSSL_PARAM params[]);
129 int evp_do_ciph_ctx_getparams(const EVP_CIPHER *ciph, void *provctx,
130 OSSL_PARAM params[]);
131 int evp_do_ciph_ctx_setparams(const EVP_CIPHER *ciph, void *provctx,
132 OSSL_PARAM params[]);
134 OSSL_PARAM *evp_pkey_to_param(EVP_PKEY *pkey, size_t *sz);
136 #define M_check_autoarg(ctx, arg, arglen, err) \
137 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \
138 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
141 EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \
148 if (*arglen < pksize) { \
149 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \