include/openssl/bcm_public.h

/* Copyright (c) 2024, Google LLC
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#ifndef OPENSSL_HEADER_BCM_PUBLIC_H_
#define OPENSSL_HEADER_BCM_PUBLIC_H_

#include <openssl/base.h>

#if defined(__cplusplus)
extern "C" {
#endif

// Public types referenced by BoringCrypto
//
// This header contains public types referenced by BCM. Such types are difficult
// to hide from the libcrypto interface, so we treat them as part of BCM.

// BCM_SHA_CBLOCK is the block size of SHA-1.
#define BCM_SHA_CBLOCK 64

// SHA_CTX
struct sha_state_st {
#if defined(__cplusplus) || defined(OPENSSL_WINDOWS)
  uint32_t h[5];
#else
  // wpa_supplicant accesses |h0|..|h4| so we must support those names for
  // compatibility with it until it can be updated. Anonymous unions are only
  // standard in C11, so disable this workaround in C++.
  union {
    uint32_t h[5];
    struct {
      uint32_t h0;
      uint32_t h1;
      uint32_t h2;
      uint32_t h3;
      uint32_t h4;
    };
  };
#endif
  uint32_t Nl, Nh;
  uint8_t data[BCM_SHA_CBLOCK];
  unsigned num;
};

// SHA256_CBLOCK is the block size of SHA-256.
#define BCM_SHA256_CBLOCK 64

// SHA256_CTX
struct sha256_state_st {
  uint32_t h[8];
  uint32_t Nl, Nh;
  uint8_t data[BCM_SHA256_CBLOCK];
  unsigned num, md_len;
};

// BCM_SHA512_CBLOCK is the block size of SHA-512.
#define BCM_SHA512_CBLOCK 128

struct sha512_state_st {
  uint64_t h[8];
  uint64_t Nl, Nh;
  uint8_t p[BCM_SHA512_CBLOCK];
  unsigned num, md_len;
};


#if defined(__cplusplus)
}  // extern C
#endif

#endif  // OPENSSL_HEADER_BCM_PUBLIC_H_