1 files changed, 0 insertions, 290 deletions
diff --git a/net/wireless_ath/lib80211_crypt_wep.c b/net/wireless_ath/lib80211_crypt_wep.c
deleted file mode 100755
index c130401..0000000
--- a/net/wireless_ath/lib80211_crypt_wep.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * lib80211 crypt: host-based WEP encryption implementation for lib80211
- *
- * Copyright (c) 2002-2004, Jouni Malinen <j@w1.fi>
- * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation. See README and COPYING for
- * more details.
- */
-
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/random.h>
-#include <linux/scatterlist.h>
-#include <linux/skbuff.h>
-#include <linux/mm.h>
-#include <asm/string.h>
-
-#include <net/lib80211.h>
-
-#include <linux/crypto.h>
-#include <linux/crc32.h>
-
-MODULE_AUTHOR("Jouni Malinen");
-MODULE_DESCRIPTION("lib80211 crypt: WEP");
-MODULE_LICENSE("GPL");
-
-struct lib80211_wep_data {
-	u32 iv;
-#define WEP_KEY_LEN 13
-	u8 key[WEP_KEY_LEN + 1];
-	u8 key_len;
-	u8 key_idx;
-	struct crypto_blkcipher *tx_tfm;
-	struct crypto_blkcipher *rx_tfm;
-};
-
-static void *lib80211_wep_init(int keyidx)
-{
-	struct lib80211_wep_data *priv;
-
-	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
-	if (priv == NULL)
-		goto fail;
-	priv->key_idx = keyidx;
-
-	priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(priv->tx_tfm)) {
-		priv->tx_tfm = NULL;
-		goto fail;
-	}
-
-	priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(priv->rx_tfm)) {
-		priv->rx_tfm = NULL;
-		goto fail;
-	}
-	/* start WEP IV from a random value */
-	get_random_bytes(&priv->iv, 4);
-
-	return priv;
-
-      fail:
-	if (priv) {
-		if (priv->tx_tfm)
-			crypto_free_blkcipher(priv->tx_tfm);
-		if (priv->rx_tfm)
-			crypto_free_blkcipher(priv->rx_tfm);
-		kfree(priv);
-	}
-	return NULL;
-}
-
-static void lib80211_wep_deinit(void *priv)
-{
-	struct lib80211_wep_data *_priv = priv;
-	if (_priv) {
-		if (_priv->tx_tfm)
-			crypto_free_blkcipher(_priv->tx_tfm);
-		if (_priv->rx_tfm)
-			crypto_free_blkcipher(_priv->rx_tfm);
-	}
-	kfree(priv);
-}
-
-/* Add WEP IV/key info to a frame that has at least 4 bytes of headroom */
-static int lib80211_wep_build_iv(struct sk_buff *skb, int hdr_len,
-			       u8 *key, int keylen, void *priv)
-{
-	struct lib80211_wep_data *wep = priv;
-	u32 klen;
-	u8 *pos;
-
-	if (skb_headroom(skb) < 4 || skb->len < hdr_len)
-		return -1;
-
-	pos = skb_push(skb, 4);
-	memmove(pos, pos + 4, hdr_len);
-	pos += hdr_len;
-
-	klen = 3 + wep->key_len;
-
-	wep->iv++;
-
-	/* Fluhrer, Mantin, and Shamir have reported weaknesses in the key
-	 * scheduling algorithm of RC4. At least IVs (KeyByte + 3, 0xff, N)
-	 * can be used to speedup attacks, so avoid using them. */
-	if ((wep->iv & 0xff00) == 0xff00) {
-		u8 B = (wep->iv >> 16) & 0xff;
-		if (B >= 3 && B < klen)
-			wep->iv += 0x0100;
-	}
-
-	/* Prepend 24-bit IV to RC4 key and TX frame */
-	*pos++ = (wep->iv >> 16) & 0xff;
-	*pos++ = (wep->iv >> 8) & 0xff;
-	*pos++ = wep->iv & 0xff;
-	*pos++ = wep->key_idx << 6;
-
-	return 0;
-}
-
-/* Perform WEP encryption on given skb that has at least 4 bytes of headroom
- * for IV and 4 bytes of tailroom for ICV. Both IV and ICV will be transmitted,
- * so the payload length increases with 8 bytes.
- *
- * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
- */
-static int lib80211_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
-{
-	struct lib80211_wep_data *wep = priv;
-	struct blkcipher_desc desc = { .tfm = wep->tx_tfm };
-	u32 crc, klen, len;
-	u8 *pos, *icv;
-	struct scatterlist sg;
-	u8 key[WEP_KEY_LEN + 3];
-
-	/* other checks are in lib80211_wep_build_iv */
-	if (skb_tailroom(skb) < 4)
-		return -1;
-
-	/* add the IV to the frame */
-	if (lib80211_wep_build_iv(skb, hdr_len, NULL, 0, priv))
-		return -1;
-
-	/* Copy the IV into the first 3 bytes of the key */
-	skb_copy_from_linear_data_offset(skb, hdr_len, key, 3);
-
-	/* Copy rest of the WEP key (the secret part) */
-	memcpy(key + 3, wep->key, wep->key_len);
-
-	len = skb->len - hdr_len - 4;
-	pos = skb->data + hdr_len + 4;
-	klen = 3 + wep->key_len;
-
-	/* Append little-endian CRC32 over only the data and encrypt it to produce ICV */
-	crc = ~crc32_le(~0, pos, len);
-	icv = skb_put(skb, 4);
-	icv[0] = crc;
-	icv[1] = crc >> 8;
-	icv[2] = crc >> 16;
-	icv[3] = crc >> 24;
-
-	crypto_blkcipher_setkey(wep->tx_tfm, key, klen);
-	sg_init_one(&sg, pos, len + 4);
-	return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
-}
-
-/* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
- * the frame: IV (4 bytes), encrypted payload (including SNAP header),
- * ICV (4 bytes). len includes both IV and ICV.
- *
- * Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
- * failure. If frame is OK, IV and ICV will be removed.
- */
-static int lib80211_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
-{
-	struct lib80211_wep_data *wep = priv;
-	struct blkcipher_desc desc = { .tfm = wep->rx_tfm };
-	u32 crc, klen, plen;
-	u8 key[WEP_KEY_LEN + 3];
-	u8 keyidx, *pos, icv[4];
-	struct scatterlist sg;
-
-	if (skb->len < hdr_len + 8)
-		return -1;
-
-	pos = skb->data + hdr_len;
-	key[0] = *pos++;
-	key[1] = *pos++;
-	key[2] = *pos++;
-	keyidx = *pos++ >> 6;
-	if (keyidx != wep->key_idx)
-		return -1;
-
-	klen = 3 + wep->key_len;
-
-	/* Copy rest of the WEP key (the secret part) */
-	memcpy(key + 3, wep->key, wep->key_len);
-
-	/* Apply RC4 to data and compute CRC32 over decrypted data */
-	plen = skb->len - hdr_len - 8;
-
-	crypto_blkcipher_setkey(wep->rx_tfm, key, klen);
-	sg_init_one(&sg, pos, plen + 4);
-	if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4))
-		return -7;
-
-	crc = ~crc32_le(~0, pos, plen);
-	icv[0] = crc;
-	icv[1] = crc >> 8;
-	icv[2] = crc >> 16;
-	icv[3] = crc >> 24;
-	if (memcmp(icv, pos + plen, 4) != 0) {
-		/* ICV mismatch - drop frame */
-		return -2;
-	}
-
-	/* Remove IV and ICV */
-	memmove(skb->data + 4, skb->data, hdr_len);
-	skb_pull(skb, 4);
-	skb_trim(skb, skb->len - 4);
-
-	return 0;
-}
-
-static int lib80211_wep_set_key(void *key, int len, u8 * seq, void *priv)
-{
-	struct lib80211_wep_data *wep = priv;
-
-	if (len < 0 || len > WEP_KEY_LEN)
-		return -1;
-
-	memcpy(wep->key, key, len);
-	wep->key_len = len;
-
-	return 0;
-}
-
-static int lib80211_wep_get_key(void *key, int len, u8 * seq, void *priv)
-{
-	struct lib80211_wep_data *wep = priv;
-
-	if (len < wep->key_len)
-		return -1;
-
-	memcpy(key, wep->key, wep->key_len);
-
-	return wep->key_len;
-}
-
-static char *lib80211_wep_print_stats(char *p, void *priv)
-{
-	struct lib80211_wep_data *wep = priv;
-	p += sprintf(p, "key[%d] alg=WEP len=%d\n", wep->key_idx, wep->key_len);
-	return p;
-}
-
-static struct lib80211_crypto_ops lib80211_crypt_wep = {
-	.name = "WEP",
-	.init = lib80211_wep_init,
-	.deinit = lib80211_wep_deinit,
-	.encrypt_mpdu = lib80211_wep_encrypt,
-	.decrypt_mpdu = lib80211_wep_decrypt,
-	.encrypt_msdu = NULL,
-	.decrypt_msdu = NULL,
-	.set_key = lib80211_wep_set_key,
-	.get_key = lib80211_wep_get_key,
-	.print_stats = lib80211_wep_print_stats,
-	.extra_mpdu_prefix_len = 4,	/* IV */
-	.extra_mpdu_postfix_len = 4,	/* ICV */
-	.owner = THIS_MODULE,
-};
-
-static int __init lib80211_crypto_wep_init(void)
-{
-	return lib80211_register_crypto_ops(&lib80211_crypt_wep);
-}
-
-static void __exit lib80211_crypto_wep_exit(void)
-{
-	lib80211_unregister_crypto_ops(&lib80211_crypt_wep);
-}
-
-module_init(lib80211_crypto_wep_init);
-module_exit(lib80211_crypto_wep_exit);