wifi: handle WEP & WPA passphrases (bgo #513820) (rh #441070)

Instead of requiring applets to hash passphrases, just do it in NM instead.
This should fix confusion where people don't understand that they are seeing
their hashed passphrase.

src/NetworkManagerUtils.c

@@ -182,61 +182,6 @@ nm_utils_ip4_prefix_to_netmask (guint32 prefix)
 	return (guint32) htonl (netmask);
 }
 
-
-/* From hostap, Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi> */
-
-static int hex2num (char c)
-{
-	if (c >= '0' && c <= '9')
-		return c - '0';
-	if (c >= 'a' && c <= 'f')
-		return c - 'a' + 10;
-	if (c >= 'A' && c <= 'F')
-		return c - 'A' + 10;
-	return -1;
-}
-
-static int hex2byte (const char *hex)
-{
-	int a, b;
-	a = hex2num(*hex++);
-	if (a < 0)
-		return -1;
-	b = hex2num(*hex++);
-	if (b < 0)
-		return -1;
-	return (a << 4) | b;
-}
-
-char *
-nm_utils_hexstr2bin (const char *hex,
-                     size_t len)
-{
-	size_t       i;
-	int          a;
-	const char * ipos = hex;
-	char *       buf = NULL;
-	char *       opos;
-
-	/* Length must be a multiple of 2 */
-	if ((len % 2) != 0)
-		return NULL;
-
-	opos = buf = g_malloc0 ((len / 2) + 1);
-	for (i = 0; i < len; i += 2) {
-		a = hex2byte (ipos);
-		if (a < 0) {
-			g_free (buf);
-			return NULL;
-		}
-		*opos++ = a;
-		ipos += 2;
-	}
-	return buf;
-}
-
-/* End from hostap */
-
 char *
 nm_ether_ntop (const struct ether_addr *mac)
 {