1 files changed, 14 insertions, 11 deletions

diff --git a/net/ieee80211/ieee80211_crypt_wep.c b/net/ieee80211/ieee80211_crypt_wep.c
index 0ebf235f6939..3d46d3efe1dd 100644
--- a/net/ieee80211/ieee80211_crypt_wep.c
+++ b/net/ieee80211/ieee80211_crypt_wep.c
@@ -9,6 +9,7 @@
  * more details.
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
@@ -32,7 +33,7 @@ struct prism2_wep_data {
         u8 key[WEP_KEY_LEN + 1];
         u8 key_len;
         u8 key_idx;
-        struct crypto_tfm *tfm;
+        struct crypto_blkcipher *tfm;
 };
 
 static void *prism2_wep_init(int keyidx)
@@ -44,10 +45,11 @@ static void *prism2_wep_init(int keyidx)
                 goto fail;
         priv->key_idx = keyidx;
 
-        priv->tfm = crypto_alloc_tfm("arc4", 0);
-        if (priv->tfm == NULL) {
+        priv->tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+        if (IS_ERR(priv->tfm)) {
                 printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate "
                        "crypto API arc4\n");
+                priv->tfm = NULL;
                 goto fail;
         }
 
@@ -59,7 +61,7 @@ static void *prism2_wep_init(int keyidx)
       fail:
         if (priv) {
                 if (priv->tfm)
-                        crypto_free_tfm(priv->tfm);
+                        crypto_free_blkcipher(priv->tfm);
                 kfree(priv);
         }
         return NULL;
@@ -69,7 +71,7 @@ static void prism2_wep_deinit(void *priv)
 {
         struct prism2_wep_data *_priv = priv;
         if (_priv && _priv->tfm)
-                crypto_free_tfm(_priv->tfm);
+                crypto_free_blkcipher(_priv->tfm);
         kfree(priv);
 }
 
@@ -120,6 +122,7 @@ static int prism2_wep_build_iv(struct sk_buff *skb, int hdr_len,
 static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 {
         struct prism2_wep_data *wep = priv;
+        struct blkcipher_desc desc = { .tfm = wep->tfm };
         u32 crc, klen, len;
         u8 *pos, *icv;
         struct scatterlist sg;
@@ -151,13 +154,11 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
         icv[2] = crc >> 16;
         icv[3] = crc >> 24;
 
-        crypto_cipher_setkey(wep->tfm, key, klen);
+        crypto_blkcipher_setkey(wep->tfm, key, klen);
         sg.page = virt_to_page(pos);
         sg.offset = offset_in_page(pos);
         sg.length = len + 4;
-        crypto_cipher_encrypt(wep->tfm, &sg, &sg, len + 4);
-
-        return 0;
+        return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
 }
 
 /* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
@@ -170,6 +171,7 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 {
         struct prism2_wep_data *wep = priv;
+        struct blkcipher_desc desc = { .tfm = wep->tfm };
         u32 crc, klen, plen;
         u8 key[WEP_KEY_LEN + 3];
         u8 keyidx, *pos, icv[4];
@@ -194,11 +196,12 @@ static int prism2_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_cipher_setkey(wep->tfm, key, klen);
+        crypto_blkcipher_setkey(wep->tfm, key, klen);
         sg.page = virt_to_page(pos);
         sg.offset = offset_in_page(pos);
         sg.length = plen + 4;
-        crypto_cipher_decrypt(wep->tfm, &sg, &sg, plen + 4);
+        if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4))
+                return -7;
 
         crc = ~crc32_le(~0, pos, plen);
         icv[0] = crc;