135 lines
5.0 KiB
C
135 lines
5.0 KiB
C
/*
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* Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* EVP_MD_CTX related stuff */
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struct evp_md_ctx_st {
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const EVP_MD *reqdigest; /* The original requested digest */
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const EVP_MD *digest;
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ENGINE *engine; /* functional reference if 'digest' is
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* ENGINE-provided */
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unsigned long flags;
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void *md_data;
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/* Public key context for sign/verify */
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EVP_PKEY_CTX *pctx;
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/* Update function: usually copied from EVP_MD */
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int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
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/* Provider ctx */
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void *provctx;
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EVP_MD *fetched_digest;
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} /* EVP_MD_CTX */ ;
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struct evp_cipher_ctx_st {
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const EVP_CIPHER *cipher;
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ENGINE *engine; /* functional reference if 'cipher' is
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* ENGINE-provided */
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int encrypt; /* encrypt or decrypt */
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int buf_len; /* number we have left */
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unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */
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unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */
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unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */
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int num; /* used by cfb/ofb/ctr mode */
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/* FIXME: Should this even exist? It appears unused */
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void *app_data; /* application stuff */
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int key_len; /* May change for variable length cipher */
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unsigned long flags; /* Various flags */
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void *cipher_data; /* per EVP data */
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int final_used;
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int block_mask;
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unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */
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/* Provider ctx */
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void *provctx;
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EVP_CIPHER *fetched_cipher;
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} /* EVP_CIPHER_CTX */ ;
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struct evp_mac_ctx_st {
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const EVP_MAC *meth; /* Method structure */
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void *data; /* Individual method data */
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} /* EVP_MAC_CTX */;
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struct evp_kdf_ctx_st {
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const EVP_KDF *meth; /* Method structure */
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EVP_KDF_IMPL *impl; /* Algorithm-specific data */
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} /* EVP_KDF_CTX */ ;
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int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
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int passlen, ASN1_TYPE *param,
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const EVP_CIPHER *c, const EVP_MD *md,
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int en_de);
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struct evp_Encode_Ctx_st {
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/* number saved in a partial encode/decode */
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int num;
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/*
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* The length is either the output line length (in input bytes) or the
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* shortest input line length that is ok. Once decoding begins, the
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* length is adjusted up each time a longer line is decoded
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*/
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int length;
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/* data to encode */
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unsigned char enc_data[80];
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/* number read on current line */
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int line_num;
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unsigned int flags;
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};
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typedef struct evp_pbe_st EVP_PBE_CTL;
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DEFINE_STACK_OF(EVP_PBE_CTL)
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int is_partially_overlapping(const void *ptr1, const void *ptr2, int len);
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#include <openssl/ossl_typ.h>
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#include <openssl/core.h>
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void *evp_generic_fetch(OPENSSL_CTX *ctx, int operation_id,
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const char *algorithm, const char *properties,
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void *(*new_method)(const OSSL_DISPATCH *fns,
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OSSL_PROVIDER *prov),
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int (*up_ref_method)(void *),
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void (*free_method)(void *));
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/* Helper functions to avoid duplicating code */
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/*
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* The callbacks implement different ways to pass a params array to the
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* provider. They will return one of these values:
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*
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* -2 if the method doesn't come from a provider
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* (evp_do_param will return this to the called)
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* -1 if the provider doesn't offer the desired function
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* (evp_do_param will raise an error and return 0)
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* or the return value from the desired function
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* (evp_do_param will return it to the caller)
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*/
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int evp_do_ciph_getparams(const void *vciph, void *ignored,
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OSSL_PARAM params[]);
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int evp_do_ciph_ctx_getparams(const void *vciph, void *provctx,
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OSSL_PARAM params[]);
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int evp_do_ciph_ctx_setparams(const void *vciph, void *provctx,
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OSSL_PARAM params[]);
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/*-
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* prepares a singular parameter, then calls the callback to execute.
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*
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* |method| points to the method used by the callback.
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* EVP_CIPHER, EVP_MD, ...
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* |ptr| points at the data to transfer.
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* |sz| is the size of the data to transfer.
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* |key| is the name of the parameter to pass.
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* |datatype| is the data type of the parameter to pass.
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* |cb| is the callback that actually performs the parameter passing
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* |cb_ctx| is the cipher context
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*/
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int evp_do_param(const void *method, void *ptr, size_t sz, const char *key,
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int datatype,
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int (*cb)(const void *method, void *ctx, OSSL_PARAM params[]),
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void *cb_ctx);
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