Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * lib80211 crypt: host-based WEP encryption implementation for lib80211
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2002-2004, Jouni Malinen <j@w1.fi>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/fips.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/scatterlist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <asm/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <net/lib80211.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <crypto/arc4.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/crc32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) MODULE_AUTHOR("Jouni Malinen");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) MODULE_DESCRIPTION("lib80211 crypt: WEP");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) struct lib80211_wep_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	u32 iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define WEP_KEY_LEN 13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	u8 key[WEP_KEY_LEN + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	u8 key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	u8 key_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct arc4_ctx tx_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	struct arc4_ctx rx_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static void *lib80211_wep_init(int keyidx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	struct lib80211_wep_data *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	if (fips_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	if (priv == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	priv->key_idx = keyidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	/* start WEP IV from a random value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	get_random_bytes(&priv->iv, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	return priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) static void lib80211_wep_deinit(void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	kfree_sensitive(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) /* Add WEP IV/key info to a frame that has at least 4 bytes of headroom */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) static int lib80211_wep_build_iv(struct sk_buff *skb, int hdr_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 			       u8 *key, int keylen, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	struct lib80211_wep_data *wep = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	u32 klen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	u8 *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	if (skb_headroom(skb) < 4 || skb->len < hdr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	pos = skb_push(skb, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	memmove(pos, pos + 4, hdr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	pos += hdr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	klen = 3 + wep->key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	wep->iv++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	/* Fluhrer, Mantin, and Shamir have reported weaknesses in the key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	 * scheduling algorithm of RC4. At least IVs (KeyByte + 3, 0xff, N)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	 * can be used to speedup attacks, so avoid using them. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	if ((wep->iv & 0xff00) == 0xff00) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		u8 B = (wep->iv >> 16) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (B >= 3 && B < klen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			wep->iv += 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	/* Prepend 24-bit IV to RC4 key and TX frame */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	*pos++ = (wep->iv >> 16) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	*pos++ = (wep->iv >> 8) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	*pos++ = wep->iv & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	*pos++ = wep->key_idx << 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) /* Perform WEP encryption on given skb that has at least 4 bytes of headroom
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)  * for IV and 4 bytes of tailroom for ICV. Both IV and ICV will be transmitted,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)  * so the payload length increases with 8 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)  * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static int lib80211_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct lib80211_wep_data *wep = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	u32 crc, klen, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	u8 *pos, *icv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	u8 key[WEP_KEY_LEN + 3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	/* other checks are in lib80211_wep_build_iv */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (skb_tailroom(skb) < 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	/* add the IV to the frame */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (lib80211_wep_build_iv(skb, hdr_len, NULL, 0, priv))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	/* Copy the IV into the first 3 bytes of the key */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	skb_copy_from_linear_data_offset(skb, hdr_len, key, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	/* Copy rest of the WEP key (the secret part) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	memcpy(key + 3, wep->key, wep->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	len = skb->len - hdr_len - 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	pos = skb->data + hdr_len + 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	klen = 3 + wep->key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	/* Append little-endian CRC32 over only the data and encrypt it to produce ICV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	crc = ~crc32_le(~0, pos, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	icv = skb_put(skb, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	icv[0] = crc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	icv[1] = crc >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	icv[2] = crc >> 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	icv[3] = crc >> 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	arc4_setkey(&wep->tx_ctx, key, klen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	arc4_crypt(&wep->tx_ctx, pos, pos, len + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)  * the frame: IV (4 bytes), encrypted payload (including SNAP header),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)  * ICV (4 bytes). len includes both IV and ICV.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)  * Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)  * failure. If frame is OK, IV and ICV will be removed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static int lib80211_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct lib80211_wep_data *wep = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	u32 crc, klen, plen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	u8 key[WEP_KEY_LEN + 3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	u8 keyidx, *pos, icv[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	if (skb->len < hdr_len + 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	pos = skb->data + hdr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	key[0] = *pos++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	key[1] = *pos++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	key[2] = *pos++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	keyidx = *pos++ >> 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	if (keyidx != wep->key_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	klen = 3 + wep->key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	/* Copy rest of the WEP key (the secret part) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	memcpy(key + 3, wep->key, wep->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	/* Apply RC4 to data and compute CRC32 over decrypted data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	plen = skb->len - hdr_len - 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	arc4_setkey(&wep->rx_ctx, key, klen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	arc4_crypt(&wep->rx_ctx, pos, pos, plen + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	crc = ~crc32_le(~0, pos, plen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	icv[0] = crc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	icv[1] = crc >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	icv[2] = crc >> 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	icv[3] = crc >> 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	if (memcmp(icv, pos + plen, 4) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		/* ICV mismatch - drop frame */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		return -2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	/* Remove IV and ICV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	memmove(skb->data + 4, skb->data, hdr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	skb_pull(skb, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	skb_trim(skb, skb->len - 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static int lib80211_wep_set_key(void *key, int len, u8 * seq, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	struct lib80211_wep_data *wep = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (len < 0 || len > WEP_KEY_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	memcpy(wep->key, key, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	wep->key_len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int lib80211_wep_get_key(void *key, int len, u8 * seq, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	struct lib80211_wep_data *wep = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (len < wep->key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	memcpy(key, wep->key, wep->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	return wep->key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static void lib80211_wep_print_stats(struct seq_file *m, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	struct lib80211_wep_data *wep = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	seq_printf(m, "key[%d] alg=WEP len=%d\n", wep->key_idx, wep->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static struct lib80211_crypto_ops lib80211_crypt_wep = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	.name = "WEP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	.init = lib80211_wep_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	.deinit = lib80211_wep_deinit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	.encrypt_mpdu = lib80211_wep_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	.decrypt_mpdu = lib80211_wep_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	.encrypt_msdu = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	.decrypt_msdu = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	.set_key = lib80211_wep_set_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	.get_key = lib80211_wep_get_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	.print_stats = lib80211_wep_print_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	.extra_mpdu_prefix_len = 4,	/* IV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	.extra_mpdu_postfix_len = 4,	/* ICV */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	.owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static int __init lib80211_crypto_wep_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	return lib80211_register_crypto_ops(&lib80211_crypt_wep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static void __exit lib80211_crypto_wep_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	lib80211_unregister_crypto_ops(&lib80211_crypt_wep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) module_init(lib80211_crypto_wep_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) module_exit(lib80211_crypto_wep_exit);