common/cmd_sha1sum.c

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <command.h>
  26 #include <sha1.h>
  27
  28 static int do_sha1sum(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  29 {
  30         unsigned long addr, len;
  31         unsigned int i;
  32         u8 output[20];
  33
  34         if (argc < 3)
  35                 return cmd_usage(cmdtp);
  36
  37         addr = simple_strtoul(argv[1], NULL, 16);
  38         len = simple_strtoul(argv[2], NULL, 16);
  39
  40         sha1_csum_wd((unsigned char *) addr, len, output, CHUNKSZ_SHA1);
  41         printf("SHA1 for %08lx ... %08lx ==> ", addr, addr + len - 1);
  42         for (i = 0; i < 20; i++)
  43                 printf("%02x", output[i]);
  44         printf("\n");
  45
  46         return 0;
  47 }
  48
  49 U_BOOT_CMD(
  50         sha1sum,        3,      1,      do_sha1sum,
  51         "compute SHA1 message digest",
  52         "address count"
  53 );