#include "os.h"#include <libsec.h> char*sha1pickle(SHA1state *s){	char *p;	int m, n; 	m = 5*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 %8.8ux ",		s->state[0], s->state[1], s->state[2],		s->state[3], s->state[4]);	enc64(p+n, m-n, s->buf, s->blen);	return p;} SHA1state*sha1unpickle(char *p){	SHA1state *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->state[4] = strtoul(p, &p, 16);	s->blen = dec64(s->buf, sizeof(s->buf), p, strlen(p));	s->malloced = 1;	s->seeded = 1;	return s;}