The Tor Browser: security/nss/lib/util/hasht.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef _HASHT_H_

     6 #define _HASHT_H_

     8 #include "prtypes.h"

    10 /* Opaque objects */

    11 typedef struct SECHashObjectStr SECHashObject;

    12 typedef struct HASHContextStr HASHContext;

    14 /*

    15  * The hash functions the security library supports

    16  * NOTE the order must match the definition of SECHashObjects[]!

    17  */

    18 typedef enum {

    19     HASH_AlgNULL   = 0,

    20     HASH_AlgMD2    = 1,

    21     HASH_AlgMD5    = 2,

    22     HASH_AlgSHA1   = 3,

    23     HASH_AlgSHA256 = 4,

    24     HASH_AlgSHA384 = 5,

    25     HASH_AlgSHA512 = 6,

    26     HASH_AlgSHA224 = 7,

    27     HASH_AlgTOTAL

    28 } HASH_HashType;

    30 /*

    31  * Number of bytes each hash algorithm produces

    32  */

    33 #define MD2_LENGTH	16

    34 #define MD5_LENGTH	16

    35 #define SHA1_LENGTH	20

    36 #define SHA224_LENGTH 	28

    37 #define SHA256_LENGTH 	32

    38 #define SHA384_LENGTH 	48

    39 #define SHA512_LENGTH 	64

    40 #define HASH_LENGTH_MAX SHA512_LENGTH

    42 /*

    43  * Structure to hold hash computation info and routines

    44  */

    45 struct SECHashObjectStr {

    46     unsigned int length;  /* hash output length (in bytes) */

    47     void * (*create)(void);

    48     void * (*clone)(void *);

    49     void (*destroy)(void *, PRBool);

    50     void (*begin)(void *);

    51     void (*update)(void *, const unsigned char *, unsigned int);

    52     void (*end)(void *, unsigned char *, unsigned int *, unsigned int);

    53     unsigned int blocklength;  /* hash input block size (in bytes) */

    54     HASH_HashType type;

    55     void (*end_raw)(void *, unsigned char *, unsigned int *, unsigned int);

    56 };

    58 struct HASHContextStr {

    59     const struct SECHashObjectStr *hashobj;

    60     void *hash_context;

    61 };

    63 #endif /* _HASHT_H_ */

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