conterm/libsec/desmodes.c
Russ Cox 934846f35c a
2005-08-08 12:50:13 +00:00

32 lines
647 B
C

#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;
}