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/* algorithms.h - rhash library algorithms */
#ifndef RHASH_ALGORITHMS_H
#define RHASH_ALGORITHMS_H
#include "rhash.h"
#include "byte_order.h"
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef RHASH_API
/* modifier for RHash library functions */
# define RHASH_API
#endif
/**
* Bit flag: default hash output format is base32.
*/
#define RHASH_INFO_BASE32 1
/**
* Information about a hash function.
*/
typedef struct rhash_info
{
/**
* Hash function indentifier.
*/
unsigned hash_id;
/**
* Flags bit-mask, including RHASH_INFO_BASE32 bit.
*/
unsigned flags;
/**
The size of of the raw message digest in bytes.
*/
size_t digest_size;
/**
* The hash function name.
*/
const char* name;
/**
* The corresponding paramenter name in a magnet link.
*/
const char* magnet_name;
} rhash_info;
typedef void (*pinit_t)(void*);
typedef void (*pupdate_t)(void* ctx, const void* msg, size_t size);
typedef void (*pfinal_t)(void*, unsigned char*);
typedef void (*pcleanup_t)(void*);
/**
* Information about a hash function
*/
typedef struct rhash_hash_info
{
rhash_info* info;
size_t context_size;
ptrdiff_t digest_diff;
pinit_t init;
pupdate_t update;
pfinal_t final;
pcleanup_t cleanup;
} rhash_hash_info;
/**
* Information on a hash function and its context
*/
typedef struct rhash_vector_item
{
struct rhash_hash_info* hash_info;
void* context;
} rhash_vector_item;
/**
* The rhash context containing contexts for several hash functions
*/
typedef struct rhash_context_ext
{
struct rhash_context rc;
unsigned hash_vector_size; /* number of contained hash sums */
unsigned flags;
unsigned state;
void* callback;
void* callback_data;
void* bt_ctx;
rhash_vector_item vector[1]; /* contexts of contained hash sums */
} rhash_context_ext;
extern rhash_hash_info rhash_hash_info_default[RHASH_HASH_COUNT];
extern rhash_hash_info* rhash_info_table;
extern int rhash_info_size;
extern unsigned rhash_uninitialized_algorithms;
extern rhash_info info_crc32;
extern rhash_info info_crc32c;
extern rhash_info info_md4;
extern rhash_info info_md5;
extern rhash_info info_sha1;
extern rhash_info info_tiger;
extern rhash_info info_tth ;
extern rhash_info info_btih;
extern rhash_info info_ed2k;
extern rhash_info info_aich;
extern rhash_info info_whirlpool;
extern rhash_info info_rmd160;
extern rhash_info info_gost;
extern rhash_info info_gostpro;
extern rhash_info info_has160;
extern rhash_info info_snf128;
extern rhash_info info_snf256;
extern rhash_info info_sha224;
extern rhash_info info_sha256;
extern rhash_info info_sha384;
extern rhash_info info_sha512;
extern rhash_info info_sha3_224;
extern rhash_info info_sha3_256;
extern rhash_info info_sha3_384;
extern rhash_info info_sha3_512;
extern rhash_info info_edr256;
extern rhash_info info_edr512;
/* rhash_info flags */
#define F_BS32 1 /* default output in base32 */
#define F_SWAP32 2 /* Big endian flag */
#define F_SWAP64 4
/* define endianness flags */
#if IS_LITTLE_ENDIAN
#define F_LE32 0
#define F_LE64 0
#define F_BE32 F_SWAP32
#define F_BE64 F_SWAP64
#else
#define F_LE32 F_SWAP32
#define F_LE64 F_SWAP64
#define F_BE32 0
#define F_BE64 0
#endif
void rhash_init_algorithms(unsigned mask);
const rhash_info* rhash_info_by_id(unsigned hash_id); /* get hash sum info by hash id */
#if defined(OPENSSL_RUNTIME) && !defined(USE_OPENSSL)
# define USE_OPENSSL
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif /* RHASH_ALGORITHMS_H */
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