diff options
Diffstat (limited to 'drivers/staging/wlan-ng/p80211wep.c')
| -rw-r--r-- | drivers/staging/wlan-ng/p80211wep.c | 198 |
1 files changed, 108 insertions, 90 deletions
diff --git a/drivers/staging/wlan-ng/p80211wep.c b/drivers/staging/wlan-ng/p80211wep.c index 405ce89e4e6e..f0b4275ab228 100644 --- a/drivers/staging/wlan-ng/p80211wep.c +++ b/drivers/staging/wlan-ng/p80211wep.c @@ -48,9 +48,6 @@ /*================================================================*/ /* System Includes */ - -#include <linux/version.h> - #include <linux/netdevice.h> #include <linux/wireless.h> #include <linux/slab.h> @@ -77,58 +74,58 @@ /* Local Static Definitions */ static const u32 wep_crc32_table[256] = { - 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, - 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, - 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, - 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, - 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, - 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, - 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, - 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, - 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, - 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, - 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, - 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, - 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, - 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, - 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, - 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, - 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, - 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, - 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, - 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, - 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, - 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, - 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, - 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, - 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, - 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, - 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, - 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, - 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, - 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, - 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, - 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, - 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, - 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, - 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, - 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, - 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, - 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, - 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, - 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, - 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, - 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, - 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, - 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, - 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, - 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, - 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, - 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, - 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, - 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, - 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, - 0x2d02ef8dL + 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, + 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, + 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, + 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, + 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, + 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, + 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, + 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, + 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, + 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, + 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, + 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, + 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, + 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, + 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, + 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, + 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, + 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, + 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, + 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, + 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, + 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, + 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, + 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, + 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, + 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, + 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, + 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, + 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, + 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, + 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, + 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, + 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, + 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, + 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, + 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, + 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, + 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, + 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, + 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, + 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, + 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, + 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, + 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, + 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, + 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, + 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, + 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, + 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, + 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, + 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, + 0x2d02ef8dL }; /*================================================================*/ @@ -139,17 +136,24 @@ static const u32 wep_crc32_table[256] = { /* keylen in bytes! */ -int wep_change_key(wlandevice_t *wlandev, int keynum, u8* key, int keylen) +int wep_change_key(wlandevice_t * wlandev, int keynum, u8 * key, int keylen) { - if (keylen < 0) return -1; - if (keylen >= MAX_KEYLEN) return -1; - if (key == NULL) return -1; - if (keynum < 0) return -1; - if (keynum >= NUM_WEPKEYS) return -1; - + if (keylen < 0) + return -1; + if (keylen >= MAX_KEYLEN) + return -1; + if (key == NULL) + return -1; + if (keynum < 0) + return -1; + if (keynum >= NUM_WEPKEYS) + return -1; #ifdef WEP_DEBUG - printk(KERN_DEBUG "WEP key %d len %d = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", keynum, keylen, key[0], key[1], key[2], key[3], key[4], key[5], key[6], key[7]); + printk(KERN_DEBUG + "WEP key %d len %d = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + keynum, keylen, key[0], key[1], key[2], key[3], key[4], key[5], + key[6], key[7]); #endif wlandev->wep_keylens[keynum] = keylen; @@ -162,14 +166,16 @@ int wep_change_key(wlandevice_t *wlandev, int keynum, u8* key, int keylen) 4-byte IV at start of buffer, 4-byte ICV at end of buffer. if successful, buf start is payload begin, length -= 8; */ -int wep_decrypt(wlandevice_t *wlandev, u8 *buf, u32 len, int key_override, u8 *iv, u8 *icv) +int wep_decrypt(wlandevice_t * wlandev, u8 * buf, u32 len, int key_override, + u8 * iv, u8 * icv) { u32 i, j, k, crc, keylen; u8 s[256], key[64], c_crc[4]; u8 keyidx; /* Needs to be at least 8 bytes of payload */ - if (len <= 0) return -1; + if (len <= 0) + return -1; /* initialize the first bytes of the key from the IV */ key[0] = iv[0]; @@ -180,19 +186,24 @@ int wep_decrypt(wlandevice_t *wlandev, u8 *buf, u32 len, int key_override, u8 *i if (key_override >= 0) keyidx = key_override; - if (keyidx >= NUM_WEPKEYS) return -2; + if (keyidx >= NUM_WEPKEYS) + return -2; keylen = wlandev->wep_keylens[keyidx]; - if (keylen == 0) return -3; + if (keylen == 0) + return -3; /* copy the rest of the key over from the designated key */ - memcpy(key+3, wlandev->wep_keys[keyidx], keylen); + memcpy(key + 3, wlandev->wep_keys[keyidx], keylen); - keylen+=3; /* add in IV bytes */ + keylen += 3; /* add in IV bytes */ #ifdef WEP_DEBUG - printk(KERN_DEBUG "D %d: %02x %02x %02x (%d %d) %02x:%02x:%02x:%02x:%02x\n", len, key[0], key[1], key[2], keyidx, keylen, key[3], key[4], key[5], key[6], key[7]); + printk(KERN_DEBUG + "D %d: %02x %02x %02x (%d %d) %02x:%02x:%02x:%02x:%02x\n", len, + key[0], key[1], key[2], keyidx, keylen, key[3], key[4], key[5], + key[6], key[7]); #endif /* set up the RC4 state */ @@ -201,16 +212,16 @@ int wep_decrypt(wlandevice_t *wlandev, u8 *buf, u32 len, int key_override, u8 *i j = 0; for (i = 0; i < 256; i++) { j = (j + s[i] + key[i % keylen]) & 0xff; - swap(i,j); + swap(i, j); } /* Apply the RC4 to the data, update the CRC32 */ crc = ~0; i = j = 0; for (k = 0; k < len; k++) { - i = (i+1) & 0xff; - j = (j+s[i]) & 0xff; - swap(i,j); + i = (i + 1) & 0xff; + j = (j + s[i]) & 0xff; + swap(i, j); buf[k] ^= s[(s[i] + s[j]) & 0xff]; crc = wep_crc32_table[(crc ^ buf[k]) & 0xff] ^ (crc >> 8); } @@ -224,28 +235,32 @@ int wep_decrypt(wlandevice_t *wlandev, u8 *buf, u32 len, int key_override, u8 *i for (k = 0; k < 4; k++) { i = (i + 1) & 0xff; - j = (j+s[i]) & 0xff; - swap(i,j); + j = (j + s[i]) & 0xff; + swap(i, j); if ((c_crc[k] ^ s[(s[i] + s[j]) & 0xff]) != icv[k]) - return -(4 | (k << 4)) ; /* ICV mismatch */ + return -(4 | (k << 4)); /* ICV mismatch */ } return 0; } /* encrypts in-place. */ -int wep_encrypt(wlandevice_t *wlandev, u8 *buf, u8 *dst, u32 len, int keynum, u8 *iv, u8 *icv) +int wep_encrypt(wlandevice_t * wlandev, u8 * buf, u8 * dst, u32 len, int keynum, + u8 * iv, u8 * icv) { u32 i, j, k, crc, keylen; u8 s[256], key[64]; /* no point in WEPping an empty frame */ - if (len <= 0) return -1; + if (len <= 0) + return -1; /* we need to have a real key.. */ - if (keynum >= NUM_WEPKEYS) return -2; + if (keynum >= NUM_WEPKEYS) + return -2; keylen = wlandev->wep_keylens[keynum]; - if (keylen <= 0) return -3; + if (keylen <= 0) + return -3; /* use a random IV. And skip known weak ones. */ get_random_bytes(iv, 3); @@ -259,12 +274,15 @@ int wep_encrypt(wlandevice_t *wlandev, u8 *buf, u8 *dst, u32 len, int keynum, u8 key[2] = iv[2]; /* copy the rest of the key over from the designated key */ - memcpy(key+3, wlandev->wep_keys[keynum], keylen); + memcpy(key + 3, wlandev->wep_keys[keynum], keylen); - keylen+=3; /* add in IV bytes */ + keylen += 3; /* add in IV bytes */ #ifdef WEP_DEBUG - printk(KERN_DEBUG "E %d (%d/%d %d) %02x %02x %02x %02x:%02x:%02x:%02x:%02x\n", len, iv[3], keynum, keylen, key[0], key[1], key[2], key[3], key[4], key[5], key[6], key[7]); + printk(KERN_DEBUG + "E %d (%d/%d %d) %02x %02x %02x %02x:%02x:%02x:%02x:%02x\n", len, + iv[3], keynum, keylen, key[0], key[1], key[2], key[3], key[4], + key[5], key[6], key[7]); #endif /* set up the RC4 state */ @@ -273,7 +291,7 @@ int wep_encrypt(wlandevice_t *wlandev, u8 *buf, u8 *dst, u32 len, int keynum, u8 j = 0; for (i = 0; i < 256; i++) { j = (j + s[i] + key[i % keylen]) & 0xff; - swap(i,j); + swap(i, j); } /* Update CRC32 then apply RC4 to the data */ @@ -281,9 +299,9 @@ int wep_encrypt(wlandevice_t *wlandev, u8 *buf, u8 *dst, u32 len, int keynum, u8 i = j = 0; for (k = 0; k < len; k++) { crc = wep_crc32_table[(crc ^ buf[k]) & 0xff] ^ (crc >> 8); - i = (i+1) & 0xff; - j = (j+s[i]) & 0xff; - swap(i,j); + i = (i + 1) & 0xff; + j = (j + s[i]) & 0xff; + swap(i, j); dst[k] = buf[k] ^ s[(s[i] + s[j]) & 0xff]; } crc = ~crc; @@ -296,8 +314,8 @@ int wep_encrypt(wlandevice_t *wlandev, u8 *buf, u8 *dst, u32 len, int keynum, u8 for (k = 0; k < 4; k++) { i = (i + 1) & 0xff; - j = (j+s[i]) & 0xff; - swap(i,j); + j = (j + s[i]) & 0xff; + swap(i, j); icv[k] ^= s[(s[i] + s[j]) & 0xff]; } |