diff options
| -rw-r--r-- | net/wireless/Kconfig | 1 | ||||
| -rw-r--r-- | net/wireless/lib80211_crypt_tkip.c | 48 |
2 files changed, 18 insertions, 31 deletions
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig index abff3c6a5b50..2cfc5b7800e9 100644 --- a/net/wireless/Kconfig +++ b/net/wireless/Kconfig @@ -219,6 +219,7 @@ config LIB80211_CRYPT_CCMP config LIB80211_CRYPT_TKIP tristate + select CRYPTO_LIB_ARC4 config LIB80211_DEBUG bool "lib80211 debugging messages" diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c index 11eaa5956f00..0fd155c4e0a6 100644 --- a/net/wireless/lib80211_crypt_tkip.c +++ b/net/wireless/lib80211_crypt_tkip.c @@ -13,6 +13,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/err.h> +#include <linux/fips.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -29,6 +30,7 @@ #include <linux/ieee80211.h> #include <net/iw_handler.h> +#include <crypto/arc4.h> #include <crypto/hash.h> #include <linux/crypto.h> #include <linux/crc32.h> @@ -64,9 +66,9 @@ struct lib80211_tkip_data { int key_idx; - struct crypto_cipher *rx_tfm_arc4; + struct arc4_ctx rx_ctx_arc4; + struct arc4_ctx tx_ctx_arc4; struct crypto_shash *rx_tfm_michael; - struct crypto_cipher *tx_tfm_arc4; struct crypto_shash *tx_tfm_michael; /* scratch buffers for virt_to_page() (crypto API) */ @@ -93,30 +95,21 @@ static void *lib80211_tkip_init(int key_idx) { struct lib80211_tkip_data *priv; + if (fips_enabled) + return NULL; + priv = kzalloc(sizeof(*priv), GFP_ATOMIC); if (priv == NULL) goto fail; priv->key_idx = key_idx; - priv->tx_tfm_arc4 = crypto_alloc_cipher("arc4", 0, 0); - if (IS_ERR(priv->tx_tfm_arc4)) { - priv->tx_tfm_arc4 = NULL; - goto fail; - } - priv->tx_tfm_michael = crypto_alloc_shash("michael_mic", 0, 0); if (IS_ERR(priv->tx_tfm_michael)) { priv->tx_tfm_michael = NULL; goto fail; } - priv->rx_tfm_arc4 = crypto_alloc_cipher("arc4", 0, 0); - if (IS_ERR(priv->rx_tfm_arc4)) { - priv->rx_tfm_arc4 = NULL; - goto fail; - } - priv->rx_tfm_michael = crypto_alloc_shash("michael_mic", 0, 0); if (IS_ERR(priv->rx_tfm_michael)) { priv->rx_tfm_michael = NULL; @@ -128,9 +121,7 @@ static void *lib80211_tkip_init(int key_idx) fail: if (priv) { crypto_free_shash(priv->tx_tfm_michael); - crypto_free_cipher(priv->tx_tfm_arc4); crypto_free_shash(priv->rx_tfm_michael); - crypto_free_cipher(priv->rx_tfm_arc4); kfree(priv); } @@ -142,11 +133,9 @@ static void lib80211_tkip_deinit(void *priv) struct lib80211_tkip_data *_priv = priv; if (_priv) { crypto_free_shash(_priv->tx_tfm_michael); - crypto_free_cipher(_priv->tx_tfm_arc4); crypto_free_shash(_priv->rx_tfm_michael); - crypto_free_cipher(_priv->rx_tfm_arc4); } - kfree(priv); + kzfree(priv); } static inline u16 RotR1(u16 val) @@ -345,7 +334,6 @@ static int lib80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) int len; u8 rc4key[16], *pos, *icv; u32 crc; - int i; if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; @@ -370,9 +358,9 @@ static int lib80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) icv[2] = crc >> 16; icv[3] = crc >> 24; - crypto_cipher_setkey(tkey->tx_tfm_arc4, rc4key, 16); - for (i = 0; i < len + 4; i++) - crypto_cipher_encrypt_one(tkey->tx_tfm_arc4, pos + i, pos + i); + arc4_setkey(&tkey->tx_ctx_arc4, rc4key, 16); + arc4_crypt(&tkey->tx_ctx_arc4, pos, pos, len + 4); + return 0; } @@ -400,7 +388,6 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv) u8 icv[4]; u32 crc; int plen; - int i; hdr = (struct ieee80211_hdr *)skb->data; @@ -453,9 +440,8 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv) plen = skb->len - hdr_len - 12; - crypto_cipher_setkey(tkey->rx_tfm_arc4, rc4key, 16); - for (i = 0; i < plen + 4; i++) - crypto_cipher_decrypt_one(tkey->rx_tfm_arc4, pos + i, pos + i); + arc4_setkey(&tkey->rx_ctx_arc4, rc4key, 16); + arc4_crypt(&tkey->rx_ctx_arc4, pos, pos, plen + 4); crc = ~crc32_le(~0, pos, plen); icv[0] = crc; @@ -640,17 +626,17 @@ 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_cipher *tfm2 = tkey->tx_tfm_arc4; + struct arc4_ctx *tfm2 = &tkey->tx_ctx_arc4; struct crypto_shash *tfm3 = tkey->rx_tfm_michael; - struct crypto_cipher *tfm4 = tkey->rx_tfm_arc4; + struct arc4_ctx *tfm4 = &tkey->rx_ctx_arc4; keyidx = tkey->key_idx; memset(tkey, 0, sizeof(*tkey)); tkey->key_idx = keyidx; tkey->tx_tfm_michael = tfm; - tkey->tx_tfm_arc4 = tfm2; + tkey->tx_ctx_arc4 = *tfm2; tkey->rx_tfm_michael = tfm3; - tkey->rx_tfm_arc4 = tfm4; + tkey->rx_ctx_arc4 = *tfm4; if (len == TKIP_KEY_LEN) { memcpy(tkey->key, key, TKIP_KEY_LEN); tkey->key_set = 1; |