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lib80211: Remove VLA usage of skcipher 

In the quest to remove all stack VLA usage from the kernel[1], this
replaces struct crypto_skcipher and SKCIPHER_REQUEST_ON_STACK() usage
with struct crypto_sync_skcipher and SYNC_SKCIPHER_REQUEST_ON_STACK(),
which uses a fixed stack size.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Kees Cook 2018-09-18 19:10:40 -07:00 committed by Herbert Xu
parent e9e575b8f2
commit db20f570e1
6 changed files with 89 additions and 95 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/staging/rtl8192e/rtllib_crypt_tkip.c
View File

@ -49,9 +49,9 @@ struct rtllib_tkip_data {
u32 dot11RSNAStatsTKIPLocalMICFailures;
int key_idx;
struct crypto_skcipher *rx_tfm_arc4;
struct crypto_sync_skcipher *rx_tfm_arc4;
struct crypto_shash *rx_tfm_michael;
struct crypto_skcipher *tx_tfm_arc4;
struct crypto_sync_skcipher *tx_tfm_arc4;
struct crypto_shash *tx_tfm_michael;
/* scratch buffers for virt_to_page() (crypto API) */
u8 rx_hdr[16];
@ -66,8 +66,7 @@ static void *rtllib_tkip_init(int key_idx)
if (priv == NULL)
goto fail;
priv->key_idx = key_idx;
priv->tx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->tx_tfm_arc4 = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm_arc4)) {
pr_debug("Could not allocate crypto API arc4\n");
priv->tx_tfm_arc4 = NULL;
@ -81,8 +80,7 @@ static void *rtllib_tkip_init(int key_idx)
goto fail;
}
priv->rx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->rx_tfm_arc4 = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm_arc4)) {
pr_debug("Could not allocate crypto API arc4\n");
priv->rx_tfm_arc4 = NULL;
@ -100,9 +98,9 @@ static void *rtllib_tkip_init(int key_idx)
fail:
if (priv) {
crypto_free_shash(priv->tx_tfm_michael);
crypto_free_skcipher(priv->tx_tfm_arc4);
crypto_free_sync_skcipher(priv->tx_tfm_arc4);
crypto_free_shash(priv->rx_tfm_michael);
crypto_free_skcipher(priv->rx_tfm_arc4);
crypto_free_sync_skcipher(priv->rx_tfm_arc4);
kfree(priv);
}
@ -116,9 +114,9 @@ static void rtllib_tkip_deinit(void *priv)
if (_priv) {
crypto_free_shash(_priv->tx_tfm_michael);
crypto_free_skcipher(_priv->tx_tfm_arc4);
crypto_free_sync_skcipher(_priv->tx_tfm_arc4);
crypto_free_shash(_priv->rx_tfm_michael);
crypto_free_skcipher(_priv->rx_tfm_arc4);
crypto_free_sync_skcipher(_priv->rx_tfm_arc4);
}
kfree(priv);
}
@ -337,7 +335,7 @@ static int rtllib_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
*pos++ = (tkey->tx_iv32 >> 24) & 0xff;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
icv = skb_put(skb, 4);
crc = ~crc32_le(~0, pos, len);
@ -349,8 +347,8 @@ static int rtllib_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
sg_init_one(&sg, pos, len+4);
crypto_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
skcipher_request_set_tfm(req, tkey->tx_tfm_arc4);
crypto_sync_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
skcipher_request_set_sync_tfm(req, tkey->tx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
ret = crypto_skcipher_encrypt(req);
@ -420,7 +418,7 @@ static int rtllib_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
pos += 8;
if (!tcb_desc->bHwSec || (skb->cb[0] == 1)) {
SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
if ((iv32 < tkey->rx_iv32 ||
(iv32 == tkey->rx_iv32 && iv16 <= tkey->rx_iv16)) &&
@ -447,8 +445,8 @@ static int rtllib_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
sg_init_one(&sg, pos, plen+4);
crypto_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
skcipher_request_set_tfm(req, tkey->rx_tfm_arc4);
crypto_sync_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
skcipher_request_set_sync_tfm(req, tkey->rx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
err = crypto_skcipher_decrypt(req);
@ -664,9 +662,9 @@ static int rtllib_tkip_set_key(void *key, int len, u8 *seq, void *priv)
struct rtllib_tkip_data *tkey = priv;
int keyidx;
struct crypto_shash *tfm = tkey->tx_tfm_michael;
struct crypto_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_sync_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_shash *tfm3 = tkey->rx_tfm_michael;
struct crypto_skcipher *tfm4 = tkey->rx_tfm_arc4;
struct crypto_sync_skcipher *tfm4 = tkey->rx_tfm_arc4;
keyidx = tkey->key_idx;
memset(tkey, 0, sizeof(*tkey));

28
drivers/staging/rtl8192e/rtllib_crypt_wep.c
View File

@ -27,8 +27,8 @@ struct prism2_wep_data {
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
struct crypto_skcipher *tx_tfm;
struct crypto_skcipher *rx_tfm;
struct crypto_sync_skcipher *tx_tfm;
struct crypto_sync_skcipher *rx_tfm;
};
@ -41,13 +41,13 @@ static void *prism2_wep_init(int keyidx)
goto fail;
priv->key_idx = keyidx;
priv->tx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->tx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm)) {
pr_debug("rtllib_crypt_wep: could not allocate crypto API arc4\n");
priv->tx_tfm = NULL;
goto fail;
}
priv->rx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->rx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm)) {
pr_debug("rtllib_crypt_wep: could not allocate crypto API arc4\n");
priv->rx_tfm = NULL;
@ -61,8 +61,8 @@ static void *prism2_wep_init(int keyidx)
fail:
if (priv) {
crypto_free_skcipher(priv->tx_tfm);
crypto_free_skcipher(priv->rx_tfm);
crypto_free_sync_skcipher(priv->tx_tfm);
crypto_free_sync_skcipher(priv->rx_tfm);
kfree(priv);
}
return NULL;
@ -74,8 +74,8 @@ static void prism2_wep_deinit(void *priv)
struct prism2_wep_data *_priv = priv;
if (_priv) {
crypto_free_skcipher(_priv->tx_tfm);
crypto_free_skcipher(_priv->rx_tfm);
crypto_free_sync_skcipher(_priv->tx_tfm);
crypto_free_sync_skcipher(_priv->rx_tfm);
}
kfree(priv);
}
@ -135,7 +135,7 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
memcpy(key + 3, wep->key, wep->key_len);
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
/* Append little-endian CRC32 and encrypt it to produce ICV */
crc = ~crc32_le(~0, pos, len);
@ -146,8 +146,8 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[3] = crc >> 24;
sg_init_one(&sg, pos, len+4);
crypto_skcipher_setkey(wep->tx_tfm, key, klen);
skcipher_request_set_tfm(req, wep->tx_tfm);
crypto_sync_skcipher_setkey(wep->tx_tfm, key, klen);
skcipher_request_set_sync_tfm(req, wep->tx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
err = crypto_skcipher_encrypt(req);
@ -199,11 +199,11 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
plen = skb->len - hdr_len - 8;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
sg_init_one(&sg, pos, plen+4);
crypto_skcipher_setkey(wep->rx_tfm, key, klen);
skcipher_request_set_tfm(req, wep->rx_tfm);
crypto_sync_skcipher_setkey(wep->rx_tfm, key, klen);
skcipher_request_set_sync_tfm(req, wep->rx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
err = crypto_skcipher_decrypt(req);

34
drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c
View File

@ -53,9 +53,9 @@ struct ieee80211_tkip_data {
int key_idx;
struct crypto_skcipher *rx_tfm_arc4;
struct crypto_sync_skcipher *rx_tfm_arc4;
struct crypto_shash *rx_tfm_michael;
struct crypto_skcipher *tx_tfm_arc4;
struct crypto_sync_skcipher *tx_tfm_arc4;
struct crypto_shash *tx_tfm_michael;
/* scratch buffers for virt_to_page() (crypto API) */
@ -71,8 +71,7 @@ static void *ieee80211_tkip_init(int key_idx)
goto fail;
priv->key_idx = key_idx;
priv->tx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->tx_tfm_arc4 = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm_arc4)) {
printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
"crypto API arc4\n");
@ -88,8 +87,7 @@ static void *ieee80211_tkip_init(int key_idx)
goto fail;
}
priv->rx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->rx_tfm_arc4 = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm_arc4)) {
printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
"crypto API arc4\n");
@ -110,9 +108,9 @@ static void *ieee80211_tkip_init(int key_idx)
fail:
if (priv) {
crypto_free_shash(priv->tx_tfm_michael);
crypto_free_skcipher(priv->tx_tfm_arc4);
crypto_free_sync_skcipher(priv->tx_tfm_arc4);
crypto_free_shash(priv->rx_tfm_michael);
crypto_free_skcipher(priv->rx_tfm_arc4);
crypto_free_sync_skcipher(priv->rx_tfm_arc4);
kfree(priv);
}
@ -126,9 +124,9 @@ static void ieee80211_tkip_deinit(void *priv)
if (_priv) {
crypto_free_shash(_priv->tx_tfm_michael);
crypto_free_skcipher(_priv->tx_tfm_arc4);
crypto_free_sync_skcipher(_priv->tx_tfm_arc4);
crypto_free_shash(_priv->rx_tfm_michael);
crypto_free_skcipher(_priv->rx_tfm_arc4);
crypto_free_sync_skcipher(_priv->rx_tfm_arc4);
}
kfree(priv);
}
@ -340,7 +338,7 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
*pos++ = (tkey->tx_iv32 >> 24) & 0xff;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
icv = skb_put(skb, 4);
crc = ~crc32_le(~0, pos, len);
@ -348,9 +346,9 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
crypto_sync_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
sg_init_one(&sg, pos, len+4);
skcipher_request_set_tfm(req, tkey->tx_tfm_arc4);
skcipher_request_set_sync_tfm(req, tkey->tx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
ret = crypto_skcipher_encrypt(req);
@ -418,7 +416,7 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
pos += 8;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
if (iv32 < tkey->rx_iv32 ||
(iv32 == tkey->rx_iv32 && iv16 <= tkey->rx_iv16)) {
@ -440,10 +438,10 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
plen = skb->len - hdr_len - 12;
crypto_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
crypto_sync_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
sg_init_one(&sg, pos, plen+4);
skcipher_request_set_tfm(req, tkey->rx_tfm_arc4);
skcipher_request_set_sync_tfm(req, tkey->rx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
@ -663,9 +661,9 @@ static int ieee80211_tkip_set_key(void *key, int len, u8 *seq, void *priv)
struct ieee80211_tkip_data *tkey = priv;
int keyidx;
struct crypto_shash *tfm = tkey->tx_tfm_michael;
struct crypto_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_sync_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_shash *tfm3 = tkey->rx_tfm_michael;
struct crypto_skcipher *tfm4 = tkey->rx_tfm_arc4;
struct crypto_sync_skcipher *tfm4 = tkey->rx_tfm_arc4;
keyidx = tkey->key_idx;
memset(tkey, 0, sizeof(*tkey));

26
drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_wep.c
View File

@ -32,8 +32,8 @@ struct prism2_wep_data {
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
struct crypto_skcipher *tx_tfm;
struct crypto_skcipher *rx_tfm;
struct crypto_sync_skcipher *tx_tfm;
struct crypto_sync_skcipher *rx_tfm;
};
@ -46,10 +46,10 @@ static void *prism2_wep_init(int keyidx)
return NULL;
priv->key_idx = keyidx;
priv->tx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->tx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm))
goto free_priv;
priv->rx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->rx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm))
goto free_tx;
@ -58,7 +58,7 @@ static void *prism2_wep_init(int keyidx)
return priv;
free_tx:
crypto_free_skcipher(priv->tx_tfm);
crypto_free_sync_skcipher(priv->tx_tfm);
free_priv:
kfree(priv);
return NULL;
@ -70,8 +70,8 @@ static void prism2_wep_deinit(void *priv)
struct prism2_wep_data *_priv = priv;
if (_priv) {
crypto_free_skcipher(_priv->tx_tfm);
crypto_free_skcipher(_priv->rx_tfm);
crypto_free_sync_skcipher(_priv->tx_tfm);
crypto_free_sync_skcipher(_priv->rx_tfm);
}
kfree(priv);
}
@ -128,7 +128,7 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
memcpy(key + 3, wep->key, wep->key_len);
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
/* Append little-endian CRC32 and encrypt it to produce ICV */
crc = ~crc32_le(~0, pos, len);
@ -138,10 +138,10 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_skcipher_setkey(wep->tx_tfm, key, klen);
crypto_sync_skcipher_setkey(wep->tx_tfm, key, klen);
sg_init_one(&sg, pos, len+4);
skcipher_request_set_tfm(req, wep->tx_tfm);
skcipher_request_set_sync_tfm(req, wep->tx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
@ -193,12 +193,12 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
plen = skb->len - hdr_len - 8;
if (!tcb_desc->bHwSec) {
SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
crypto_skcipher_setkey(wep->rx_tfm, key, klen);
crypto_sync_skcipher_setkey(wep->rx_tfm, key, klen);
sg_init_one(&sg, pos, plen+4);
skcipher_request_set_tfm(req, wep->rx_tfm);
skcipher_request_set_sync_tfm(req, wep->rx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);

34
net/wireless/lib80211_crypt_tkip.c
View File

@ -64,9 +64,9 @@ struct lib80211_tkip_data {
int key_idx;
struct crypto_skcipher *rx_tfm_arc4;
struct crypto_sync_skcipher *rx_tfm_arc4;
struct crypto_shash *rx_tfm_michael;
struct crypto_skcipher *tx_tfm_arc4;
struct crypto_sync_skcipher *tx_tfm_arc4;
struct crypto_shash *tx_tfm_michael;
/* scratch buffers for virt_to_page() (crypto API) */
@ -99,8 +99,7 @@ static void *lib80211_tkip_init(int key_idx)
priv->key_idx = key_idx;
priv->tx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->tx_tfm_arc4 = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm_arc4)) {
priv->tx_tfm_arc4 = NULL;
goto fail;
@ -112,8 +111,7 @@ static void *lib80211_tkip_init(int key_idx)
goto fail;
}
priv->rx_tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
priv->rx_tfm_arc4 = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm_arc4)) {
priv->rx_tfm_arc4 = NULL;
goto fail;
@ -130,9 +128,9 @@ static void *lib80211_tkip_init(int key_idx)
fail:
if (priv) {
crypto_free_shash(priv->tx_tfm_michael);
crypto_free_skcipher(priv->tx_tfm_arc4);
crypto_free_sync_skcipher(priv->tx_tfm_arc4);
crypto_free_shash(priv->rx_tfm_michael);
crypto_free_skcipher(priv->rx_tfm_arc4);
crypto_free_sync_skcipher(priv->rx_tfm_arc4);
kfree(priv);
}
@ -144,9 +142,9 @@ static void lib80211_tkip_deinit(void *priv)
struct lib80211_tkip_data *_priv = priv;
if (_priv) {
crypto_free_shash(_priv->tx_tfm_michael);
crypto_free_skcipher(_priv->tx_tfm_arc4);
crypto_free_sync_skcipher(_priv->tx_tfm_arc4);
crypto_free_shash(_priv->rx_tfm_michael);
crypto_free_skcipher(_priv->rx_tfm_arc4);
crypto_free_sync_skcipher(_priv->rx_tfm_arc4);
}
kfree(priv);
}
@ -344,7 +342,7 @@ static int lib80211_tkip_hdr(struct sk_buff *skb, int hdr_len,
static int lib80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct lib80211_tkip_data *tkey = priv;
SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, tkey->tx_tfm_arc4);
int len;
u8 rc4key[16], *pos, *icv;
u32 crc;
@ -374,9 +372,9 @@ static int lib80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
crypto_sync_skcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
sg_init_one(&sg, pos, len + 4);
skcipher_request_set_tfm(req, tkey->tx_tfm_arc4);
skcipher_request_set_sync_tfm(req, tkey->tx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
err = crypto_skcipher_encrypt(req);
@ -400,7 +398,7 @@ static inline int tkip_replay_check(u32 iv32_n, u16 iv16_n,
static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct lib80211_tkip_data *tkey = priv;
SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, tkey->rx_tfm_arc4);
u8 rc4key[16];
u8 keyidx, *pos;
u32 iv32;
@ -463,9 +461,9 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
plen = skb->len - hdr_len - 12;
crypto_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
crypto_sync_skcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
sg_init_one(&sg, pos, plen + 4);
skcipher_request_set_tfm(req, tkey->rx_tfm_arc4);
skcipher_request_set_sync_tfm(req, tkey->rx_tfm_arc4);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
err = crypto_skcipher_decrypt(req);
@ -660,9 +658,9 @@ static int lib80211_tkip_set_key(void *key, int len, u8 * seq, void *priv)
struct lib80211_tkip_data *tkey = priv;
int keyidx;
struct crypto_shash *tfm = tkey->tx_tfm_michael;
struct crypto_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_sync_skcipher *tfm2 = tkey->tx_tfm_arc4;
struct crypto_shash *tfm3 = tkey->rx_tfm_michael;
struct crypto_skcipher *tfm4 = tkey->rx_tfm_arc4;
struct crypto_sync_skcipher *tfm4 = tkey->rx_tfm_arc4;
keyidx = tkey->key_idx;
memset(tkey, 0, sizeof(*tkey));

28
net/wireless/lib80211_crypt_wep.c
View File

@ -35,8 +35,8 @@ struct lib80211_wep_data {
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
struct crypto_skcipher *tx_tfm;
struct crypto_skcipher *rx_tfm;
struct crypto_sync_skcipher *tx_tfm;
struct crypto_sync_skcipher *rx_tfm;
};
static void *lib80211_wep_init(int keyidx)
@ -48,13 +48,13 @@ static void *lib80211_wep_init(int keyidx)
goto fail;
priv->key_idx = keyidx;
priv->tx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->tx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm)) {
priv->tx_tfm = NULL;
goto fail;
}
priv->rx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
priv->rx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm)) {
priv->rx_tfm = NULL;
goto fail;
@ -66,8 +66,8 @@ static void *lib80211_wep_init(int keyidx)
fail:
if (priv) {
crypto_free_skcipher(priv->tx_tfm);
crypto_free_skcipher(priv->rx_tfm);
crypto_free_sync_skcipher(priv->tx_tfm);
crypto_free_sync_skcipher(priv->rx_tfm);
kfree(priv);
}
return NULL;
@ -77,8 +77,8 @@ static void lib80211_wep_deinit(void *priv)
{
struct lib80211_wep_data *_priv = priv;
if (_priv) {
crypto_free_skcipher(_priv->tx_tfm);
crypto_free_skcipher(_priv->rx_tfm);
crypto_free_sync_skcipher(_priv->tx_tfm);
crypto_free_sync_skcipher(_priv->rx_tfm);
}
kfree(priv);
}
@ -129,7 +129,7 @@ static int lib80211_wep_build_iv(struct sk_buff *skb, int hdr_len,
static int lib80211_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct lib80211_wep_data *wep = priv;
SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, wep->tx_tfm);
u32 crc, klen, len;
u8 *pos, *icv;
struct scatterlist sg;
@ -162,9 +162,9 @@ static int lib80211_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_skcipher_setkey(wep->tx_tfm, key, klen);
crypto_sync_skcipher_setkey(wep->tx_tfm, key, klen);
sg_init_one(&sg, pos, len + 4);
skcipher_request_set_tfm(req, wep->tx_tfm);
skcipher_request_set_sync_tfm(req, wep->tx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, len + 4, NULL);
err = crypto_skcipher_encrypt(req);
@ -182,7 +182,7 @@ static int lib80211_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
static int lib80211_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct lib80211_wep_data *wep = priv;
SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
SYNC_SKCIPHER_REQUEST_ON_STACK(req, wep->rx_tfm);
u32 crc, klen, plen;
u8 key[WEP_KEY_LEN + 3];
u8 keyidx, *pos, icv[4];
@ -208,9 +208,9 @@ static int lib80211_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
/* Apply RC4 to data and compute CRC32 over decrypted data */
plen = skb->len - hdr_len - 8;
crypto_skcipher_setkey(wep->rx_tfm, key, klen);
crypto_sync_skcipher_setkey(wep->rx_tfm, key, klen);
sg_init_one(&sg, pos, plen + 4);
skcipher_request_set_tfm(req, wep->rx_tfm);
skcipher_request_set_sync_tfm(req, wep->rx_tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, &sg, &sg, plen + 4, NULL);
err = crypto_skcipher_decrypt(req);