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#include <u.h>
#include <libc.h>
#include <authsrv.h>
#include <libsec.h>
void
passtodeskey(char key[DESKEYLEN], char *p)
{
uchar buf[PASSWDLEN], *t;
int i, n;
memset(buf, ' ', 8);
n = strlen(p);
if(n >= sizeof(buf))
n = sizeof(buf)-1;
memmove(buf, p, n);
buf[n] = 0;
memset(key, 0, DESKEYLEN);
t = buf;
for(;;){
for(i = 0; i < DESKEYLEN; i++)
key[i] = (t[i] >> i) + (t[i+1] << (8 - (i+1)));
if(n <= 8)
return;
n -= 8;
t += 8;
if(n < 8){
t -= 8 - n;
n = 8;
}
encrypt(key, t, 8);
}
}
void
passtoaeskey(uchar key[AESKEYLEN], char *p)
{
static char salt[] = "Plan 9 key derivation";
pbkdf2_x((uchar*)p, strlen(p), (uchar*)salt, sizeof(salt)-1, 9001, key, AESKEYLEN, hmac_sha1, SHA1dlen);
}
void
passtokey(Authkey *key, char *pw)
{
memset(key, 0, sizeof(Authkey));
passtodeskey(key->des, pw);
passtoaeskey(key->aes, pw);
}
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