harvey/sys/src/cmd/unix/drawterm/libsec/md5pickle.c

/*
 * This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file.
 */

#include "os.h"
#include <libsec.h>

int8_t*
md5pickle(MD5state *s)
{
	int8_t *p;
	int m, n;

	m = 4*9+4*((s->blen+3)/3);
	p = malloc(m);
	if(p == nil)
		return p;
	n = sprint(p, "%8.8ux %8.8ux %8.8ux %8.8ux ",
		s->state[0], s->state[1], s->state[2],
		s->state[3]);
	enc64(p+n, m-n, s->buf, s->blen);
	return p;
}

MD5state*
md5unpickle(int8_t *p)
{
	MD5state *s;

	s = malloc(sizeof(*s));
	if(s == nil)
		return nil;
	s->state[0] = strtoul(p, &p, 16);
	s->state[1] = strtoul(p, &p, 16);
	s->state[2] = strtoul(p, &p, 16);
	s->state[3] = strtoul(p, &p, 16);
	s->blen = dec64(s->buf, sizeof(s->buf), p, strlen(p));
	s->malloced = 1;
	s->seeded = 1;
	return s;
}