diff options
Diffstat (limited to 'drivers/staging/rtl8192e/rtllib_crypt_wep.c')
-rw-r--r-- | drivers/staging/rtl8192e/rtllib_crypt_wep.c | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/drivers/staging/rtl8192e/rtllib_crypt_wep.c b/drivers/staging/rtl8192e/rtllib_crypt_wep.c index 21d7eee4c9a9..b3343a5d0fd6 100644 --- a/drivers/staging/rtl8192e/rtllib_crypt_wep.c +++ b/drivers/staging/rtl8192e/rtllib_crypt_wep.c @@ -9,6 +9,7 @@ * more details. */ +#include <crypto/skcipher.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -17,8 +18,6 @@ #include <linux/string.h> #include "rtllib.h" -#include <linux/crypto.h> - #include <linux/scatterlist.h> #include <linux/crc32.h> @@ -28,8 +27,8 @@ struct prism2_wep_data { u8 key[WEP_KEY_LEN + 1]; u8 key_len; u8 key_idx; - struct crypto_blkcipher *tx_tfm; - struct crypto_blkcipher *rx_tfm; + struct crypto_skcipher *tx_tfm; + struct crypto_skcipher *rx_tfm; }; @@ -42,13 +41,13 @@ static void *prism2_wep_init(int keyidx) goto fail; priv->key_idx = keyidx; - priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); + priv->tx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); 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_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); + priv->rx_tfm = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); if (IS_ERR(priv->rx_tfm)) { pr_debug("rtllib_crypt_wep: could not allocate crypto API arc4\n"); priv->rx_tfm = NULL; @@ -62,10 +61,8 @@ static void *prism2_wep_init(int keyidx) fail: if (priv) { - if (priv->tx_tfm) - crypto_free_blkcipher(priv->tx_tfm); - if (priv->rx_tfm) - crypto_free_blkcipher(priv->rx_tfm); + crypto_free_skcipher(priv->tx_tfm); + crypto_free_skcipher(priv->rx_tfm); kfree(priv); } return NULL; @@ -77,10 +74,8 @@ static void prism2_wep_deinit(void *priv) struct prism2_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); + crypto_free_skcipher(_priv->tx_tfm); + crypto_free_skcipher(_priv->rx_tfm); } kfree(priv); } @@ -99,10 +94,10 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv) u8 *pos; struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); - struct blkcipher_desc desc = {.tfm = wep->tx_tfm}; u32 crc; u8 *icv; struct scatterlist sg; + int err; if (skb_headroom(skb) < 4 || skb_tailroom(skb) < 4 || skb->len < hdr_len){ @@ -140,6 +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); /* Append little-endian CRC32 and encrypt it to produce ICV */ crc = ~crc32_le(~0, pos, len); @@ -150,8 +146,13 @@ 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_blkcipher_setkey(wep->tx_tfm, key, klen); - return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4); + crypto_skcipher_setkey(wep->tx_tfm, key, klen); + skcipher_request_set_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); + skcipher_request_zero(req); + return err; } return 0; @@ -173,10 +174,10 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv) u8 keyidx, *pos; struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); - struct blkcipher_desc desc = {.tfm = wep->rx_tfm}; u32 crc; u8 icv[4]; struct scatterlist sg; + int err; if (skb->len < hdr_len + 8) return -1; @@ -198,9 +199,16 @@ 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); + sg_init_one(&sg, pos, plen+4); - crypto_blkcipher_setkey(wep->rx_tfm, key, klen); - if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4)) + crypto_skcipher_setkey(wep->rx_tfm, key, klen); + skcipher_request_set_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); + skcipher_request_zero(req); + if (err) return -7; crc = ~crc32_le(~0, pos, plen); icv[0] = crc; |