#ifndef __SHA2_H__
#define __SHA2_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
#ifdef RUBY
# ifdef HAVE_PROTOTYPES
# undef NOPROTO
# else
# define NOPROTO
# endif
# ifndef BYTE_ORDER
# define LITTLE_ENDIAN 1234
# define BIG_ENDIAN 4321
# ifdef WORDS_BIGENDIAN
# define BYTE_ORDER BIG_ENDIAN
# else
# define BYTE_ORDER LITTLE_ENDIAN
# endif
# endif
# define SHA2_USE_INTTYPES_H
#else
#ifdef SHA2_USE_INTTYPES_H
#include <inttypes.h>
#endif
#endif
#define SHA256_BLOCK_LENGTH 64
#define SHA256_DIGEST_LENGTH 32
#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
#define SHA384_BLOCK_LENGTH 128
#define SHA384_DIGEST_LENGTH 48
#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64
#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
#ifndef SHA2_USE_INTTYPES_H
# ifdef HAVE_U_INT8_T
typedef u_int8_t uint8_t;
typedef u_int32_t uint32_t;
typedef u_int64_t uint64_t;
# else
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
typedef unsigned long long uint64_t;
# endif
#endif
typedef struct _SHA256_CTX {
uint32_t state[8];
uint64_t bitcount;
uint8_t buffer[SHA256_BLOCK_LENGTH];
} SHA256_CTX;
typedef struct _SHA512_CTX {
uint64_t state[8];
uint64_t bitcount[2];
uint8_t buffer[SHA512_BLOCK_LENGTH];
} SHA512_CTX;
typedef SHA512_CTX SHA384_CTX;
#ifdef RUBY
#define SHA256_Init rb_Digest_SHA256_Init
#define SHA256_Update rb_Digest_SHA256_Update
#define SHA256_Finish rb_Digest_SHA256_Finish
#define SHA256_Data rb_Digest_SHA256_Data
#define SHA256_End rb_Digest_SHA256_End
#define SHA256_Last rb_Digest_SHA256_Last
#define SHA256_Transform rb_Digest_SHA256_Transform
#define SHA256_Final(d, c) SHA256_Finish(c, d)
#define SHA384_Init rb_Digest_SHA384_Init
#define SHA384_Update rb_Digest_SHA384_Update
#define SHA384_Finish rb_Digest_SHA384_Finish
#define SHA384_Data rb_Digest_SHA384_Data
#define SHA384_End rb_Digest_SHA384_End
#define SHA384_Last rb_Digest_SHA384_Last
#define SHA384_Transform rb_Digest_SHA384_Transform
#define SHA384_Final(d, c) SHA384_Finish(c, d)
#define SHA512_Init rb_Digest_SHA512_Init
#define SHA512_Update rb_Digest_SHA512_Update
#define SHA512_Finish rb_Digest_SHA512_Finish
#define SHA512_Data rb_Digest_SHA512_Data
#define SHA512_End rb_Digest_SHA512_End
#define SHA512_Last rb_Digest_SHA512_Last
#define SHA512_Transform rb_Digest_SHA512_Transform
#define SHA512_Final(d, c) SHA512_Finish(c, d)
#endif
#ifndef NOPROTO
int SHA256_Init(SHA256_CTX *);
void SHA256_Update(SHA256_CTX*, const uint8_t*, size_t);
int SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
char* SHA256_Data(const uint8_t*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
int SHA384_Init(SHA384_CTX*);
void SHA384_Update(SHA384_CTX*, const uint8_t*, size_t);
int SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
char* SHA384_Data(const uint8_t*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
int SHA512_Init(SHA512_CTX*);
void SHA512_Update(SHA512_CTX*, const uint8_t*, size_t);
int SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
char* SHA512_Data(const uint8_t*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
#else
int SHA256_Init();
void SHA256_Update();
#ifdef RUBY
int SHA256_Finish();
#else
int SHA256_Final();
#endif
char* SHA256_End();
char* SHA256_Data();
int SHA384_Init();
void SHA384_Update();
#ifdef RUBY
int SHA384_Finish();
#else
int SHA384_Final();
#endif
char* SHA384_End();
char* SHA384_Data();
int SHA512_Init();
void SHA512_Update();
#ifdef RUBY
int SHA512_Finish();
#else
int SHA512_Final();
#endif
char* SHA512_End();
char* SHA512_Data();
#endif
#ifdef __cplusplus
}
#endif
#endif