/* sha.h for openssl */


#ifndef WOLFSSL_SHA_H_
# define WOLFSSL_SHA_H_

# include "../wolfcrypt/settings.h"
# include "../wolfcrypt/types.h"

# ifdef WOLFSSL_PREFIX
#  include "prefix_sha.h"
# endif

# ifdef __cplusplus
extern "C" {
# endif


typedef struct WOLFSSL_SHA_CTX {
    /* big enough to hold wolfcrypt Sha, but check on init */
    int holder[28 + (WC_ASYNC_DEV_SIZE / sizeof(int))];
} WOLFSSL_SHA_CTX;

WOLFSSL_API int
wolfSSL_SHA_Init(WOLFSSL_SHA_CTX *);
WOLFSSL_API int
wolfSSL_SHA_Update(WOLFSSL_SHA_CTX *, const void *, unsigned long);
WOLFSSL_API int
wolfSSL_SHA_Final(unsigned char *, WOLFSSL_SHA_CTX *);

/* SHA1 points to above, shouldn't use SHA0 ever */
WOLFSSL_API int
wolfSSL_SHA1_Init(WOLFSSL_SHA_CTX *);
WOLFSSL_API int
wolfSSL_SHA1_Update(WOLFSSL_SHA_CTX *, const void *, unsigned long);
WOLFSSL_API int
wolfSSL_SHA1_Final(unsigned char *, WOLFSSL_SHA_CTX *);

enum {
    SHA_DIGEST_LENGTH = 20
};


typedef WOLFSSL_SHA_CTX SHA_CTX;

# define SHA_Init    wolfSSL_SHA_Init
# define SHA_Update  wolfSSL_SHA_Update
# define SHA_Final   wolfSSL_SHA_Final

# define SHA1_Init   wolfSSL_SHA1_Init
# define SHA1_Update wolfSSL_SHA1_Update
# define SHA1_Final  wolfSSL_SHA1_Final


# ifdef WOLFSSL_SHA224

/* Using ALIGN16 because when AES-NI is enabled digest and buffer in Sha256
 * struct are 16 byte aligned. Any derefrence to those elements after casting to
 * Sha224, is expected to also be 16 byte aligned addresses.  */
typedef struct WOLFSSL_SHA224_CTX {
    /* big enough to hold wolfcrypt Sha224, but check on init */
    ALIGN16 int holder[34 + (WC_ASYNC_DEV_SIZE / sizeof(int))];
} WOLFSSL_SHA224_CTX;

WOLFSSL_API int
wolfSSL_SHA224_Init(WOLFSSL_SHA224_CTX *);
WOLFSSL_API int
wolfSSL_SHA224_Update(WOLFSSL_SHA224_CTX *, const void *,
  unsigned long);
WOLFSSL_API int
wolfSSL_SHA224_Final(unsigned char *, WOLFSSL_SHA224_CTX *);

enum {
    SHA224_DIGEST_LENGTH = 28
};


typedef WOLFSSL_SHA224_CTX SHA224_CTX;

#  define SHA224_Init   wolfSSL_SHA224_Init
#  define SHA224_Update wolfSSL_SHA224_Update
#  define SHA224_Final  wolfSSL_SHA224_Final

# endif /* WOLFSSL_SHA224 */


/* Using ALIGN16 because when AES-NI is enabled digest and buffer in Sha256
 * struct are 16 byte aligned. Any derefrence to those elements after casting to
 * Sha256, is expected to also be 16 byte aligned addresses.  */
typedef struct WOLFSSL_SHA256_CTX {
    /* big enough to hold wolfcrypt Sha256, but check on init */
    ALIGN16 int holder[34 + (WC_ASYNC_DEV_SIZE / sizeof(int))];
} WOLFSSL_SHA256_CTX;

WOLFSSL_API int
wolfSSL_SHA256_Init(WOLFSSL_SHA256_CTX *);
WOLFSSL_API int
wolfSSL_SHA256_Update(WOLFSSL_SHA256_CTX *, const void *,
  unsigned long);
WOLFSSL_API int
wolfSSL_SHA256_Final(unsigned char *, WOLFSSL_SHA256_CTX *);

enum {
    SHA256_DIGEST_LENGTH = 32
};


typedef WOLFSSL_SHA256_CTX SHA256_CTX;

# define SHA256_Init   wolfSSL_SHA256_Init
# define SHA256_Update wolfSSL_SHA256_Update
# define SHA256_Final  wolfSSL_SHA256_Final


# ifdef WOLFSSL_SHA384

typedef struct WOLFSSL_SHA384_CTX {
    /* big enough to hold wolfCrypt Sha384, but check on init */
    long long holder[32 + (WC_ASYNC_DEV_SIZE / sizeof(long long))];
} WOLFSSL_SHA384_CTX;

WOLFSSL_API int
wolfSSL_SHA384_Init(WOLFSSL_SHA384_CTX *);
WOLFSSL_API int
wolfSSL_SHA384_Update(WOLFSSL_SHA384_CTX *, const void *,
  unsigned long);
WOLFSSL_API int
wolfSSL_SHA384_Final(unsigned char *, WOLFSSL_SHA384_CTX *);

enum {
    SHA384_DIGEST_LENGTH = 48
};


typedef WOLFSSL_SHA384_CTX SHA384_CTX;

#  define SHA384_Init   wolfSSL_SHA384_Init
#  define SHA384_Update wolfSSL_SHA384_Update
#  define SHA384_Final  wolfSSL_SHA384_Final

# endif /* WOLFSSL_SHA384 */

# ifdef WOLFSSL_SHA512

typedef struct WOLFSSL_SHA512_CTX {
    /* big enough to hold wolfCrypt Sha384, but check on init */
    long long holder[36 + (WC_ASYNC_DEV_SIZE / sizeof(long long))];
} WOLFSSL_SHA512_CTX;

WOLFSSL_API int
wolfSSL_SHA512_Init(WOLFSSL_SHA512_CTX *);
WOLFSSL_API int
wolfSSL_SHA512_Update(WOLFSSL_SHA512_CTX *, const void *,
  unsigned long);
WOLFSSL_API int
wolfSSL_SHA512_Final(unsigned char *, WOLFSSL_SHA512_CTX *);

enum {
    SHA512_DIGEST_LENGTH = 64
};


typedef WOLFSSL_SHA512_CTX SHA512_CTX;

#  define SHA512_Init   wolfSSL_SHA512_Init
#  define SHA512_Update wolfSSL_SHA512_Update
#  define SHA512_Final  wolfSSL_SHA512_Final

# endif /* WOLFSSL_SHA512 */


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


#endif /* WOLFSSL_SHA_H_ */
