#include <linux/wireless.h>
#include <linux/slab.h>
#include <linux/random.h>
+#include <linux/kernel.h>
#include "wlan_compat.h"
/*================================================================*/
/* Local Constants */
-#define SSWAP(a,b) {u8 tmp = s[a]; s[a] = s[b]; s[b] = tmp;}
#define WEP_KEY(x) (((x) & 0xC0) >> 6)
-/*================================================================*/
-/* Local Macros */
-
-
-/*================================================================*/
-/* Local Types */
-
-
/*================================================================*/
/* Local Static Definitions */
j = 0;
for (i = 0; i < 256; i++) {
j = (j + s[i] + key[i % keylen]) & 0xff;
- SSWAP(i,j);
+ swap(i,j);
}
/* Apply the RC4 to the data, update the CRC32 */
for (k = 0; k < len; k++) {
i = (i+1) & 0xff;
j = (j+s[i]) & 0xff;
- SSWAP(i,j);
+ swap(i,j);
buf[k] ^= s[(s[i] + s[j]) & 0xff];
crc = wep_crc32_table[(crc ^ buf[k]) & 0xff] ^ (crc >> 8);
}
for (k = 0; k < 4; k++) {
i = (i + 1) & 0xff;
j = (j+s[i]) & 0xff;
- SSWAP(i,j);
+ swap(i,j);
if ((c_crc[k] ^ s[(s[i] + s[j]) & 0xff]) != icv[k])
return -(4 | (k << 4)) ; /* ICV mismatch */
}
j = 0;
for (i = 0; i < 256; i++) {
j = (j + s[i] + key[i % keylen]) & 0xff;
- SSWAP(i,j);
+ swap(i,j);
}
/* Update CRC32 then apply RC4 to the data */
crc = wep_crc32_table[(crc ^ buf[k]) & 0xff] ^ (crc >> 8);
i = (i+1) & 0xff;
j = (j+s[i]) & 0xff;
- SSWAP(i,j);
+ swap(i,j);
dst[k] = buf[k] ^ s[(s[i] + s[j]) & 0xff];
}
crc = ~crc;
for (k = 0; k < 4; k++) {
i = (i + 1) & 0xff;
j = (j+s[i]) & 0xff;
- SSWAP(i,j);
+ swap(i,j);
icv[k] ^= s[(s[i] + s[j]) & 0xff];
}