File: desmodes.c

package info (click to toggle)
drawterm 20170818-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye, buster, forky, sid, trixie
  • size: 3,124 kB
  • ctags: 5,803
  • sloc: ansic: 55,900; python: 2,501; makefile: 570; asm: 20
file content (31 lines) | stat: -rw-r--r-- 647 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
#include "os.h"
#include <libsec.h>

/*
 *  these routines use the 64bit format for
 *  DES keys.
 */

void
setupDESstate(DESstate *s, uchar key[8], uchar *ivec)
{
	memset(s, 0, sizeof(*s));
	memmove(s->key, key, sizeof(s->key));
	des_key_setup(key, s->expanded);
	if(ivec)
		memmove(s->ivec, ivec, 8);
	s->setup = 0xdeadbeef;
}

void
setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec)
{
	memset(s, 0, sizeof(*s));
	memmove(s->key, key, sizeof(s->key));
	des_key_setup(key[0], s->expanded[0]);
	des_key_setup(key[1], s->expanded[1]);
	des_key_setup(key[2], s->expanded[2]);
	if(ivec)
		memmove(s->ivec, ivec, 8);
	s->setup = 0xdeadbeef;
}