49 lines
871 B
C
49 lines
871 B
C
#include <u.h>
|
|
#include <lib9.h>
|
|
#include <authsrv.h>
|
|
#include <libsec.h>
|
|
|
|
void
|
|
passtodeskey(char key[DESKEYLEN], char *p)
|
|
{
|
|
uint8_t buf[ANAMELEN], *t;
|
|
int i, n;
|
|
|
|
n = strlen(p);
|
|
if(n >= ANAMELEN)
|
|
n = ANAMELEN-1;
|
|
memset(buf, ' ', 8);
|
|
t = buf;
|
|
strncpy((char*)t, p, n);
|
|
t[n] = 0;
|
|
memset(key, 0, DESKEYLEN);
|
|
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(uint8_t key[AESKEYLEN], char *p)
|
|
{
|
|
static char salt[] = "Plan 9 key derivation";
|
|
pbkdf2_x((uint8_t*)p, strlen(p), (uint8_t*)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);
|
|
}
|