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// Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef OPENSSL_HEADER_CRYPTO_FIPSMODULE_DIGEST_INTERNAL_H
#define OPENSSL_HEADER_CRYPTO_FIPSMODULE_DIGEST_INTERNAL_H
#include <contrib/restricted/google/boringssl/include/openssl/base.h>
#if defined(__cplusplus)
extern "C" {
#endif
// env_md_st is typoed ("evp" -> "env"), but the typo comes from OpenSSL and
// some consumers forward-declare these structures so we're leaving it alone.
struct env_md_st {
// type contains a NID identifying the digest function. (For example,
// NID_md5.)
int type;
// md_size contains the size, in bytes, of the resulting digest.
unsigned md_size;
// flags contains the OR of |EVP_MD_FLAG_*| values.
uint32_t flags;
// init initialises the state in |ctx->md_data|.
void (*init)(EVP_MD_CTX *ctx);
// update hashes |len| bytes of |data| into the state in |ctx->md_data|.
void (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
// final completes the hash and writes |md_size| bytes of digest to |out|.
void (*final)(EVP_MD_CTX *ctx, uint8_t *out);
// block_size contains the hash's native block size.
unsigned block_size;
// ctx_size contains the size, in bytes, of the state of the hash function.
unsigned ctx_size;
};
// evp_md_pctx_ops contains function pointers to allow the |pctx| member of
// |EVP_MD_CTX| to be manipulated without breaking layering by calling EVP
// functions.
struct evp_md_pctx_ops {
// free is called when an |EVP_MD_CTX| is being freed and the |pctx| also
// needs to be freed.
void (*free)(EVP_PKEY_CTX *pctx);
// dup is called when an |EVP_MD_CTX| is copied and so the |pctx| also needs
// to be copied.
EVP_PKEY_CTX *(*dup)(EVP_PKEY_CTX *pctx);
};
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_CRYPTO_FIPSMODULE_DIGEST_INTERNAL_H
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