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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_SHA2_H
#define OPENSSL_HEADER_SHA2_H
#include <contrib/restricted/google/boringssl/include/openssl/base.h> // IWYU pragma: export
#if defined(__cplusplus)
extern "C" {
#endif
// SHA-224.
// SHA224_CBLOCK is the block size of SHA-224.
#define SHA224_CBLOCK 64
// SHA224_DIGEST_LENGTH is the length of a SHA-224 digest.
#define SHA224_DIGEST_LENGTH 28
// SHA224_Init initialises |sha| and returns 1.
OPENSSL_EXPORT int SHA224_Init(SHA256_CTX *sha);
// SHA224_Update adds |len| bytes from |data| to |sha| and returns 1.
OPENSSL_EXPORT int SHA224_Update(SHA256_CTX *sha, const void *data, size_t len);
// SHA224_Final adds the final padding to |sha| and writes the resulting digest
// to |out|, which must have at least |SHA224_DIGEST_LENGTH| bytes of space. It
// returns 1.
OPENSSL_EXPORT int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH],
SHA256_CTX *sha);
// SHA224 writes the digest of |len| bytes from |data| to |out| and returns
// |out|. There must be at least |SHA224_DIGEST_LENGTH| bytes of space in
// |out|.
OPENSSL_EXPORT uint8_t *SHA224(const uint8_t *data, size_t len,
uint8_t out[SHA224_DIGEST_LENGTH]);
// SHA-256.
// SHA256_CBLOCK is the block size of SHA-256.
#define SHA256_CBLOCK 64
// SHA256_DIGEST_LENGTH is the length of a SHA-256 digest.
#define SHA256_DIGEST_LENGTH 32
// SHA256_Init initialises |sha| and returns 1.
OPENSSL_EXPORT int SHA256_Init(SHA256_CTX *sha);
// SHA256_Update adds |len| bytes from |data| to |sha| and returns 1.
OPENSSL_EXPORT int SHA256_Update(SHA256_CTX *sha, const void *data, size_t len);
// SHA256_Final adds the final padding to |sha| and writes the resulting digest
// to |out|, which must have at least |SHA256_DIGEST_LENGTH| bytes of space. It
// returns one on success and zero on programmer error.
OPENSSL_EXPORT int SHA256_Final(uint8_t out[SHA256_DIGEST_LENGTH],
SHA256_CTX *sha);
// SHA256 writes the digest of |len| bytes from |data| to |out| and returns
// |out|. There must be at least |SHA256_DIGEST_LENGTH| bytes of space in
// |out|.
OPENSSL_EXPORT uint8_t *SHA256(const uint8_t *data, size_t len,
uint8_t out[SHA256_DIGEST_LENGTH]);
// SHA256_Transform is a low-level function that performs a single, SHA-256
// block transformation using the state from |sha| and |SHA256_CBLOCK| bytes
// from |block|.
OPENSSL_EXPORT void SHA256_Transform(SHA256_CTX *sha,
const uint8_t block[SHA256_CBLOCK]);
// SHA256_TransformBlocks is a low-level function that takes |num_blocks| *
// |SHA256_CBLOCK| bytes of data and performs SHA-256 transforms on it to update
// |state|. You should not use this function unless you are implementing a
// derivative of SHA-256.
OPENSSL_EXPORT void SHA256_TransformBlocks(uint32_t state[8],
const uint8_t *data,
size_t num_blocks);
struct sha256_state_st {
uint32_t h[8];
uint32_t Nl, Nh;
uint8_t data[SHA256_CBLOCK];
unsigned num, md_len;
} /* SHA256_CTX */;
// SHA-384.
// SHA384_CBLOCK is the block size of SHA-384.
#define SHA384_CBLOCK 128
// SHA384_DIGEST_LENGTH is the length of a SHA-384 digest.
#define SHA384_DIGEST_LENGTH 48
// SHA384_Init initialises |sha| and returns 1.
OPENSSL_EXPORT int SHA384_Init(SHA512_CTX *sha);
// SHA384_Update adds |len| bytes from |data| to |sha| and returns 1.
OPENSSL_EXPORT int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len);
// SHA384_Final adds the final padding to |sha| and writes the resulting digest
// to |out|, which must have at least |SHA384_DIGEST_LENGTH| bytes of space. It
// returns one on success and zero on programmer error.
OPENSSL_EXPORT int SHA384_Final(uint8_t out[SHA384_DIGEST_LENGTH],
SHA512_CTX *sha);
// SHA384 writes the digest of |len| bytes from |data| to |out| and returns
// |out|. There must be at least |SHA384_DIGEST_LENGTH| bytes of space in
// |out|.
OPENSSL_EXPORT uint8_t *SHA384(const uint8_t *data, size_t len,
uint8_t out[SHA384_DIGEST_LENGTH]);
// SHA-512.
// SHA512_CBLOCK is the block size of SHA-512.
#define SHA512_CBLOCK 128
// SHA512_DIGEST_LENGTH is the length of a SHA-512 digest.
#define SHA512_DIGEST_LENGTH 64
// SHA512_Init initialises |sha| and returns 1.
OPENSSL_EXPORT int SHA512_Init(SHA512_CTX *sha);
// SHA512_Update adds |len| bytes from |data| to |sha| and returns 1.
OPENSSL_EXPORT int SHA512_Update(SHA512_CTX *sha, const void *data, size_t len);
// SHA512_Final adds the final padding to |sha| and writes the resulting digest
// to |out|, which must have at least |SHA512_DIGEST_LENGTH| bytes of space. It
// returns one on success and zero on programmer error.
OPENSSL_EXPORT int SHA512_Final(uint8_t out[SHA512_DIGEST_LENGTH],
SHA512_CTX *sha);
// SHA512 writes the digest of |len| bytes from |data| to |out| and returns
// |out|. There must be at least |SHA512_DIGEST_LENGTH| bytes of space in
// |out|.
OPENSSL_EXPORT uint8_t *SHA512(const uint8_t *data, size_t len,
uint8_t out[SHA512_DIGEST_LENGTH]);
// SHA512_Transform is a low-level function that performs a single, SHA-512
// block transformation using the state from |sha| and |SHA512_CBLOCK| bytes
// from |block|.
OPENSSL_EXPORT void SHA512_Transform(SHA512_CTX *sha,
const uint8_t block[SHA512_CBLOCK]);
struct sha512_state_st {
uint64_t h[8];
uint16_t num, md_len;
uint32_t bytes_so_far_high;
uint64_t bytes_so_far_low;
uint8_t p[SHA512_CBLOCK];
} /* SHA512_CTX */;
// SHA-512-256
//
// See https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf section 5.3.6
#define SHA512_256_DIGEST_LENGTH 32
// SHA512_256_Init initialises |sha| and returns 1.
OPENSSL_EXPORT int SHA512_256_Init(SHA512_CTX *sha);
// SHA512_256_Update adds |len| bytes from |data| to |sha| and returns 1.
OPENSSL_EXPORT int SHA512_256_Update(SHA512_CTX *sha, const void *data,
size_t len);
// SHA512_256_Final adds the final padding to |sha| and writes the resulting
// digest to |out|, which must have at least |SHA512_256_DIGEST_LENGTH| bytes of
// space. It returns one on success and zero on programmer error.
OPENSSL_EXPORT int SHA512_256_Final(uint8_t out[SHA512_256_DIGEST_LENGTH],
SHA512_CTX *sha);
// SHA512_256 writes the digest of |len| bytes from |data| to |out| and returns
// |out|. There must be at least |SHA512_256_DIGEST_LENGTH| bytes of space in
// |out|.
OPENSSL_EXPORT uint8_t *SHA512_256(const uint8_t *data, size_t len,
uint8_t out[SHA512_256_DIGEST_LENGTH]);
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_SHA2_H
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