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bf36c5d521
This new command supports hashing SHA1 and SHA256. It could be extended to others such as MD5 and the CRC algorithms. The syntax is modeled on those: hash <algorithm> <address> <length> [*<dest_addr> | <dest_envvar>] to calculate a hash, and: hash -v <algorithm> <address> <length> [*<verify_addr> | <verify_envvar>] to verify a hash. Use CONFIG_CMD_HASH to enable the command, CONFIG_SHA1 to enable SHA1 and CONFIG_SHA256 to enable SHA256. The existing sha1sum command remains. Signed-off-by: Simon Glass <sjg@chromium.org>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Copyright (c) 2012 The Chromium OS Authors.
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*
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* (C) Copyright 2011
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* Joe Hershberger, National Instruments, joe.hershberger@ni.com
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*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <hash.h>
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static int do_hash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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#ifdef CONFIG_HASH_VERIFY
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int verify = 0;
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if (!strcmp(argv[1], "-v")) {
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verify = 1;
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argc--;
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argv++;
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}
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#endif
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/* Move forward to 'algorithm' parameter */
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argc--;
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argv++;
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return hash_command(*argv, verify, cmdtp, flag, argc - 1, argv + 1);
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}
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#ifdef CONFIG_HASH_VERIFY
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U_BOOT_CMD(
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hash, 6, 1, do_hash,
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"compute hash message digest",
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"algorithm address count [[*]sum_dest]\n"
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" - compute message digest [save to env var / *address]\n"
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"hash -v algorithm address count [*]sum\n"
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" - verify hash of memory area with env var / *address"
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);
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#else
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U_BOOT_CMD(
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hash, 5, 1, do_hash,
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"compute message digest",
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"algorithm address count [[*]sum_dest]\n"
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" - compute message digest [save to env var / *address]"
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);
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#endif
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