hash.c File Reference

#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "hash.h"
#include "adler32.h"
#include "crc.h"
#include "md5.h"
#include "murmur3.h"
#include "ripemd.h"
#include "sha.h"
#include "sha512.h"
#include "avstring.h"
#include "base64.h"
#include "error.h"
#include "intreadwrite.h"
#include "mem.h"

Go to the source code of this file.

Data Structures
struct	AVHashContext

Macros
#define	HASHES(ENTRY)
#define	HASH_TYPE(TYPE, NAME, SIZE)
#define	HASH_MAX_SIZE(TYPE, NAME, SIZE)
#define	HASH_MAX_NAME_SIZE(TYPE, NAME, SIZE)
#define	HASH_DESC(TYPE, NAME, SIZE)

Enumerations
enum	hashtype { NUM_HASHES }
enum	{ MAX_HASH_SIZE }
enum	{ MAX_HASH_NAME_SIZE }

Functions
const char *	av_hash_names (int i)
	Get the names of available hash algorithms.
const char *	av_hash_get_name (const AVHashContext *ctx)
int	av_hash_get_size (const AVHashContext *ctx)
int	av_hash_alloc (AVHashContext **ctx, const char *name)
	Allocate a hash context for the algorithm specified by name.
void	av_hash_init (AVHashContext *ctx)
	Initialize or reset a hash context.
void	av_hash_update (AVHashContext *ctx, const uint8_t *src, size_t len)
	Update a hash context with additional data.
void	av_hash_final (AVHashContext *ctx, uint8_t *dst)
	Finalize a hash context and compute the actual hash value.
void	av_hash_final_bin (struct AVHashContext *ctx, uint8_t *dst, int size)
	Finalize a hash context and store the actual hash value in a buffer.
void	av_hash_final_hex (struct AVHashContext *ctx, uint8_t *dst, int size)
	Finalize a hash context and store the hexadecimal representation of the actual hash value as a string.
void	av_hash_final_b64 (struct AVHashContext *ctx, uint8_t *dst, int size)
	Finalize a hash context and store the Base64 representation of the actual hash value as a string.
void	av_hash_freep (AVHashContext **ctx)
	Free hash context and set hash context pointer to NULL.

Variables
struct {
const char   name [MAX_HASH_NAME_SIZE]
int   size
}	hashdesc []

Macro Definition Documentation

HASHES

#define HASHES

(

ENTRY

)

Value:

    ENTRY(MD5,        "MD5",        16) \
    ENTRY(MURMUR3,    "murmur3",    16) \
    ENTRY(RIPEMD128,  "RIPEMD128",  16) \
    ENTRY(RIPEMD160,  "RIPEMD160",  20) \
    ENTRY(RIPEMD256,  "RIPEMD256",  32) \
    ENTRY(RIPEMD320,  "RIPEMD320",  40) \
    ENTRY(SHA160,     "SHA160",     20) \
    ENTRY(SHA224,     "SHA224",     28) \
    ENTRY(SHA256,     "SHA256",     32) \
    ENTRY(SHA512_224, "SHA512/224", 28) \
    ENTRY(SHA512_256, "SHA512/256", 32) \
    ENTRY(SHA384,     "SHA384",     48) \
    ENTRY(SHA512,     "SHA512",     64) \
    ENTRY(CRC32,      "CRC32",       4) \
    ENTRY(ADLER32,    "adler32",     4) \

Definition at line 43 of file hash.c.

HASH_TYPE

#define HASH_TYPE	(		TYPE,
			NAME,
			SIZE )

Value:

TYPE,

Definition at line 61 of file hash.c.

HASH_MAX_SIZE

#define HASH_MAX_SIZE	(		TYPE,
			NAME,
			SIZE )

Value:

    HASH_MAX_SIZE_BEFORE_ ## TYPE,      \
    HASH_MAX_SIZE_UNTIL_ ## TYPE ## _MINUS_ONE = FFMAX(SIZE, HASH_MAX_SIZE_BEFORE_ ## TYPE) - 1,

Definition at line 73 of file hash.c.

HASH_MAX_NAME_SIZE

#define HASH_MAX_NAME_SIZE	(		TYPE,
			NAME,
			SIZE )

Value:

    HASH_MAX_NAME_SIZE_BEFORE_ ## TYPE,      \
    HASH_MAX_NAME_SIZE_UNTIL_ ## TYPE ## _MINUS_ONE = FFMAX(sizeof(NAME), HASH_MAX_NAME_SIZE_BEFORE_ ## TYPE) - 1,

Definition at line 82 of file hash.c.

HASH_DESC

#define HASH_DESC	(		TYPE,
			NAME,
			SIZE )

Value:

[TYPE] = { NAME, SIZE },

Enumeration Type Documentation

hashtype

enum hashtype

Enumerator
NUM_HASHES

Definition at line 60 of file hash.c.

anonymous enum

anonymous enum

Enumerator
MAX_HASH_SIZE

Definition at line 76 of file hash.c.

anonymous enum

anonymous enum

Enumerator
MAX_HASH_NAME_SIZE

Definition at line 85 of file hash.c.

Function Documentation

av_hash_get_name()

const char * av_hash_get_name

(

const AVHashContext *

ctx

)

Examples

ffhash.c.

Definition at line 104 of file hash.c.

Referenced by avtext_print_data_hash(), check(), finish(), and main().

av_hash_get_size()

int av_hash_get_size

(

const AVHashContext *

ctx

)

Definition at line 109 of file hash.c.

Referenced by av_hash_final_b64(), av_hash_final_bin(), av_hash_final_hex(), decode(), hash_uri(), and main().

Variable Documentation

name

const char name[MAX_HASH_NAME_SIZE]

Definition at line 91 of file hash.c.

size

int size

Definition at line 92 of file hash.c.

[struct]

const struct { ... } hashdesc[]

Initial value:

= {
#define HASH_DESC(TYPE, NAME, SIZE)                         
 
}

Referenced by av_hash_alloc(), av_hash_get_name(), av_hash_get_size(), and av_hash_names().