git: 9front

ref: b9d96c7baee1327e46d8e69e7d2caf119ae95bb4
dir: /sys/src/cmd/auth/lib/getauthkey.c/

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#include <u.h>
#include <libc.h>
#include <authsrv.h>
#include <bio.h>
#include "authcmdlib.h"

static int
getkey(Authkey *authkey)
{
	Nvrsafe safe;

	if(readnvram(&safe, 0) < 0)
		return -1;
	memmove(authkey->des, safe.machkey, DESKEYLEN);
	memmove(authkey->aes, safe.aesmachkey, AESKEYLEN);
	memset(&safe, 0, sizeof safe);
	return 0;
}

int
getauthkey(Authkey *authkey)
{
	memset(authkey, 0, sizeof(Authkey));
	if(getkey(authkey) == 0)
		return 1;
	print("can't read NVRAM, please enter machine key\n");
	getpass(authkey, nil, 0, 1);
	return 1;
}