/* sha512.h
 *
 * Copyright (C) 2006-2017 wolfSSL Inc.
 *
 * This file is part of wolfSSL.
 *
 * wolfSSL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * wolfSSL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
 */


#ifndef WOLF_CRYPT_SHA512_H
# define WOLF_CRYPT_SHA512_H

# include <wolfssl/wolfcrypt/types.h>

# ifdef WOLFSSL_SHA512

/* for fips @wc_fips */
#  ifdef HAVE_FIPS
#   define wc_Sha512              Sha512
#   define WC_SHA512              SHA512
#   define WC_SHA512_BLOCK_SIZE   SHA512_BLOCK_SIZE
#   define WC_SHA512_DIGEST_SIZE  SHA512_DIGEST_SIZE
#   define WC_SHA512_PAD_SIZE     SHA512_PAD_SIZE
#   ifdef WOLFSSL_SHA384
#    define wc_Sha384             Sha384
#    define WC_SHA384             SHA384
#    define WC_SHA384_BLOCK_SIZE  SHA384_BLOCK_SIZE
#    define WC_SHA384_DIGEST_SIZE SHA384_DIGEST_SIZE
#    define WC_SHA384_PAD_SIZE    SHA384_PAD_SIZE
#   endif /* WOLFSSL_SHA384 */

#   define CYASSL_SHA512
#   if defined(WOLFSSL_SHA384)
#    define CYASSL_SHA384
#   endif
#   include <cyassl/ctaocrypt/sha512.h>
#  endif // ifdef HAVE_FIPS

#  ifdef __cplusplus
extern "C" {
#  endif

#  ifndef HAVE_FIPS /* avoid redefinition of structs */

#   ifdef WOLFSSL_ASYNC_CRYPT
#    include <wolfssl/wolfcrypt/async.h>
#   endif

#   if defined(_MSC_VER)
#    define SHA512_NOINLINE __declspec(noinline)
#   elif defined(__GNUC__)
#    define SHA512_NOINLINE __attribute__((noinline))
#   else
#    define SHA512_NOINLINE
#   endif

#   ifndef NO_OLD_WC_NAMES
#    define Sha512             wc_Sha512
#    define SHA512             WC_SHA512
#    define SHA512_BLOCK_SIZE  WC_SHA512_BLOCK_SIZE
#    define SHA512_DIGEST_SIZE WC_SHA512_DIGEST_SIZE
#    define SHA512_PAD_SIZE    WC_SHA512_PAD_SIZE
#   endif

/* in bytes */
enum {
    WC_SHA512             = 4, /* hash type unique */
    WC_SHA512_BLOCK_SIZE  = 128,
    WC_SHA512_DIGEST_SIZE = 64,
    WC_SHA512_PAD_SIZE    = 112
};


/* wc_Sha512 digest */
typedef struct wc_Sha512 {
    word64       digest[WC_SHA512_DIGEST_SIZE / sizeof(word64)];
    word64       buffer[WC_SHA512_BLOCK_SIZE / sizeof(word64)];
    word32       buffLen; /* in bytes          */
    word64       loLen;   /* length in bytes   */
    word64       hiLen;   /* length in bytes   */
    void *       heap;
    #   ifdef USE_INTEL_SPEEDUP
    const byte * data;
    #   endif
    #   ifdef WOLFSSL_ASYNC_CRYPT
    WC_ASYNC_DEV asyncDev;
    #   endif /* WOLFSSL_ASYNC_CRYPT */
} wc_Sha512;

#  endif /* HAVE_FIPS */

WOLFSSL_API int
wc_InitSha512(wc_Sha512 *);
WOLFSSL_API int
wc_InitSha512_ex(wc_Sha512 *, void *, int);
WOLFSSL_API int wc_Sha512Update(wc_Sha512 *, const byte *, word32);
WOLFSSL_API int
wc_Sha512Final(wc_Sha512 *, byte *);
WOLFSSL_API void
wc_Sha512Free(wc_Sha512 *);

WOLFSSL_API int
wc_Sha512GetHash(wc_Sha512 *, byte *);
WOLFSSL_API int
wc_Sha512Copy(wc_Sha512 * src, wc_Sha512 * dst);

#  if defined(WOLFSSL_SHA384)

#   ifndef HAVE_FIPS /* avoid redefinition of structs */

#    ifndef NO_OLD_WC_NAMES
#     define Sha384             wc_Sha384
#     define SHA384             WC_SHA384
#     define SHA384_BLOCK_SIZE  WC_SHA384_BLOCK_SIZE
#     define SHA384_DIGEST_SIZE WC_SHA384_DIGEST_SIZE
#     define SHA384_PAD_SIZE    WC_SHA384_PAD_SIZE
#    endif

/* in bytes */
enum {
    WC_SHA384             = 5, /* hash type unique */
    WC_SHA384_BLOCK_SIZE  = WC_SHA512_BLOCK_SIZE,
    WC_SHA384_DIGEST_SIZE = 48,
    WC_SHA384_PAD_SIZE    = WC_SHA512_PAD_SIZE
};

typedef wc_Sha512 wc_Sha384;
#   endif /* HAVE_FIPS */

WOLFSSL_API int
wc_InitSha384(wc_Sha384 *);
WOLFSSL_API int
wc_InitSha384_ex(wc_Sha384 *, void *, int);
WOLFSSL_API int wc_Sha384Update(wc_Sha384 *, const byte *, word32);
WOLFSSL_API int
wc_Sha384Final(wc_Sha384 *, byte *);
WOLFSSL_API void
wc_Sha384Free(wc_Sha384 *);

WOLFSSL_API int
wc_Sha384GetHash(wc_Sha384 *, byte *);
WOLFSSL_API int
wc_Sha384Copy(wc_Sha384 * src, wc_Sha384 * dst);

#  endif /* WOLFSSL_SHA384 */

#  ifdef __cplusplus
} /* extern "C" */
#  endif

# endif /* WOLFSSL_SHA512 */
#endif  /* WOLF_CRYPT_SHA512_H */
