460408ef9a
We have a SHA1 command and want to add a SHA256 command also. Instead of duplicating the code, create a generic hash API which can process commands for different algorithms. Signed-off-by: Simon Glass <sjg@chromium.org>
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
|
|
* Copyright (c) 2012 The Chromium OS Authors.
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _HASH_H
|
|
#define _HASH_H
|
|
|
|
#ifdef CONFIG_SHA1SUM_VERIFY
|
|
#define CONFIG_HASH_VERIFY
|
|
#endif
|
|
|
|
struct hash_algo {
|
|
const char *name; /* Name of algorithm */
|
|
int digest_size; /* Length of digest */
|
|
/**
|
|
* hash_func_ws: Generic hashing function
|
|
*
|
|
* This is the generic prototype for a hashing function. We only
|
|
* have the watchdog version at present.
|
|
*
|
|
* @input: Input buffer
|
|
* @ilen: Input buffer length
|
|
* @output: Checksum result (length depends on algorithm)
|
|
* @chunk_sz: Trigger watchdog after processing this many bytes
|
|
*/
|
|
void (*hash_func_ws)(const unsigned char *input, unsigned int ilen,
|
|
unsigned char *output, unsigned int chunk_sz);
|
|
int chunk_size; /* Watchdog chunk size */
|
|
};
|
|
|
|
/*
|
|
* Maximum digest size for all algorithms we support. Having this value
|
|
* avoids a malloc() or C99 local declaration in common/cmd_hash.c.
|
|
*/
|
|
#define HASH_MAX_DIGEST_SIZE 32
|
|
|
|
/**
|
|
* hash_command: Process a hash command for a particular algorithm
|
|
*
|
|
* This common function is used to implement specific hash commands.
|
|
*
|
|
* @algo_name: Hash algorithm being used
|
|
* @verify: Non-zero to enable verify mode
|
|
* @cmdtp: Pointer to command table entry
|
|
* @flag: Some flags normally 0 (see CMD_FLAG_.. above)
|
|
* @argc: Number of arguments (arg 0 must be the command text)
|
|
* @argv: Arguments
|
|
*/
|
|
int hash_command(const char *algo_name, int verify, cmd_tbl_t *cmdtp, int flag,
|
|
int argc, char * const argv[]);
|
|
|
|
#endif
|