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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_MD4_H
#define OPENSSL_HEADER_MD4_H
#include <contrib/restricted/google/boringssl/include/openssl/base.h> // IWYU pragma: export
#if defined(__cplusplus)
extern "C" {
#endif
// MD4.
// MD4_CBLOCK is the block size of MD4.
#define MD4_CBLOCK 64
// MD4_DIGEST_LENGTH is the length of an MD4 digest.
#define MD4_DIGEST_LENGTH 16
// MD4_Init initialises |md4| and returns one.
OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4);
// MD4_Update adds |len| bytes from |data| to |md4| and returns one.
OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len);
// MD4_Final adds the final padding to |md4| and writes the resulting digest to
// |out|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It
// returns one.
OPENSSL_EXPORT int MD4_Final(uint8_t out[MD4_DIGEST_LENGTH], MD4_CTX *md4);
// MD4 writes the digest of |len| bytes from |data| to |out| and returns |out|.
// There must be at least |MD4_DIGEST_LENGTH| bytes of space in |out|.
OPENSSL_EXPORT uint8_t *MD4(const uint8_t *data, size_t len,
uint8_t out[MD4_DIGEST_LENGTH]);
// MD4_Transform is a low-level function that performs a single, MD4 block
// transformation using the state from |md4| and 64 bytes from |block|.
OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4,
const uint8_t block[MD4_CBLOCK]);
struct md4_state_st {
uint32_t h[4];
uint32_t Nl, Nh;
uint8_t data[MD4_CBLOCK];
unsigned num;
};
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_MD4_H
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