diff options
Diffstat (limited to 'net/ieee80211')
| -rw-r--r-- | net/ieee80211/ieee80211_crypt_ccmp.c | 32 | ||||
| -rw-r--r-- | net/ieee80211/ieee80211_crypt_tkip.c | 100 | ||||
| -rw-r--r-- | net/ieee80211/ieee80211_crypt_wep.c | 35 |
3 files changed, 82 insertions, 85 deletions
diff --git a/net/ieee80211/ieee80211_crypt_ccmp.c b/net/ieee80211/ieee80211_crypt_ccmp.c index 098c66846339..35aa3426c3fa 100644 --- a/net/ieee80211/ieee80211_crypt_ccmp.c +++ b/net/ieee80211/ieee80211_crypt_ccmp.c @@ -9,6 +9,7 @@ * more details. */ +#include <linux/err.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -48,7 +49,7 @@ struct ieee80211_ccmp_data { int key_idx; - struct crypto_tfm *tfm; + struct crypto_cipher *tfm; /* scratch buffers for virt_to_page() (crypto API) */ u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN], @@ -56,20 +57,10 @@ struct ieee80211_ccmp_data { u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN]; }; -static void ieee80211_ccmp_aes_encrypt(struct crypto_tfm *tfm, - const u8 pt[16], u8 ct[16]) +static inline void ieee80211_ccmp_aes_encrypt(struct crypto_cipher *tfm, + const u8 pt[16], u8 ct[16]) { - struct scatterlist src, dst; - - src.page = virt_to_page(pt); - src.offset = offset_in_page(pt); - src.length = AES_BLOCK_LEN; - - dst.page = virt_to_page(ct); - dst.offset = offset_in_page(ct); - dst.length = AES_BLOCK_LEN; - - crypto_cipher_encrypt(tfm, &dst, &src, AES_BLOCK_LEN); + crypto_cipher_encrypt_one(tfm, ct, pt); } static void *ieee80211_ccmp_init(int key_idx) @@ -81,10 +72,11 @@ static void *ieee80211_ccmp_init(int key_idx) goto fail; priv->key_idx = key_idx; - priv->tfm = crypto_alloc_tfm("aes", 0); - if (priv->tfm == NULL) { + priv->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->tfm)) { printk(KERN_DEBUG "ieee80211_crypt_ccmp: could not allocate " "crypto API aes\n"); + priv->tfm = NULL; goto fail; } @@ -93,7 +85,7 @@ static void *ieee80211_ccmp_init(int key_idx) fail: if (priv) { if (priv->tfm) - crypto_free_tfm(priv->tfm); + crypto_free_cipher(priv->tfm); kfree(priv); } @@ -104,7 +96,7 @@ static void ieee80211_ccmp_deinit(void *priv) { struct ieee80211_ccmp_data *_priv = priv; if (_priv && _priv->tfm) - crypto_free_tfm(_priv->tfm); + crypto_free_cipher(_priv->tfm); kfree(priv); } @@ -115,7 +107,7 @@ static inline void xor_block(u8 * b, u8 * a, size_t len) b[i] ^= a[i]; } -static void ccmp_init_blocks(struct crypto_tfm *tfm, +static void ccmp_init_blocks(struct crypto_cipher *tfm, struct ieee80211_hdr_4addr *hdr, u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0) { @@ -398,7 +390,7 @@ static int ieee80211_ccmp_set_key(void *key, int len, u8 * seq, void *priv) { struct ieee80211_ccmp_data *data = priv; int keyidx; - struct crypto_tfm *tfm = data->tfm; + struct crypto_cipher *tfm = data->tfm; keyidx = data->key_idx; memset(data, 0, sizeof(*data)); diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c index f2df2f5b3e4c..259572dfd4f1 100644 --- a/net/ieee80211/ieee80211_crypt_tkip.c +++ b/net/ieee80211/ieee80211_crypt_tkip.c @@ -9,6 +9,7 @@ * more details. */ +#include <linux/err.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -52,10 +53,10 @@ struct ieee80211_tkip_data { int key_idx; - struct crypto_tfm *tx_tfm_arc4; - struct crypto_tfm *tx_tfm_michael; - struct crypto_tfm *rx_tfm_arc4; - struct crypto_tfm *rx_tfm_michael; + struct crypto_blkcipher *rx_tfm_arc4; + struct crypto_hash *rx_tfm_michael; + struct crypto_blkcipher *tx_tfm_arc4; + struct crypto_hash *tx_tfm_michael; /* scratch buffers for virt_to_page() (crypto API) */ u8 rx_hdr[16], tx_hdr[16]; @@ -87,31 +88,37 @@ static void *ieee80211_tkip_init(int key_idx) priv->key_idx = key_idx; - priv->tx_tfm_arc4 = crypto_alloc_tfm("arc4", 0); - if (priv->tx_tfm_arc4 == NULL) { + priv->tx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, + CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->tx_tfm_arc4)) { printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate " "crypto API arc4\n"); + priv->tfm_arc4 = NULL; goto fail; } - priv->tx_tfm_michael = crypto_alloc_tfm("michael_mic", 0); - if (priv->tx_tfm_michael == NULL) { + priv->tx_tfm_michael = crypto_alloc_hash("michael_mic", 0, + CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->tx_tfm_michael)) { printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate " "crypto API michael_mic\n"); goto fail; } - priv->rx_tfm_arc4 = crypto_alloc_tfm("arc4", 0); - if (priv->rx_tfm_arc4 == NULL) { + priv->rx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, + CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->rx_tfm_arc4)) { printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate " "crypto API arc4\n"); goto fail; } - priv->rx_tfm_michael = crypto_alloc_tfm("michael_mic", 0); - if (priv->rx_tfm_michael == NULL) { + priv->rx_tfm_michael = crypto_alloc_hash("michael_mic", 0, + CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->rx_tfm_michael)) { printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate " "crypto API michael_mic\n"); + priv->tfm_michael = NULL; goto fail; } @@ -120,13 +127,13 @@ static void *ieee80211_tkip_init(int key_idx) fail: if (priv) { if (priv->tx_tfm_michael) - crypto_free_tfm(priv->tx_tfm_michael); + crypto_free_hash(priv->tx_tfm_michael); if (priv->tx_tfm_arc4) - crypto_free_tfm(priv->tx_tfm_arc4); + crypto_free_blkcipher(priv->tx_tfm_arc4); if (priv->rx_tfm_michael) - crypto_free_tfm(priv->rx_tfm_michael); + crypto_free_hash(priv->rx_tfm_michael); if (priv->rx_tfm_arc4) - crypto_free_tfm(priv->rx_tfm_arc4); + crypto_free_blkcipher(priv->rx_tfm_arc4); kfree(priv); } @@ -138,13 +145,13 @@ static void ieee80211_tkip_deinit(void *priv) struct ieee80211_tkip_data *_priv = priv; if (_priv) { if (_priv->tx_tfm_michael) - crypto_free_tfm(_priv->tx_tfm_michael); + crypto_free_hash(_priv->tx_tfm_michael); if (_priv->tx_tfm_arc4) - crypto_free_tfm(_priv->tx_tfm_arc4); + crypto_free_blkcipher(_priv->tx_tfm_arc4); if (_priv->rx_tfm_michael) - crypto_free_tfm(_priv->rx_tfm_michael); + crypto_free_hash(_priv->rx_tfm_michael); if (_priv->rx_tfm_arc4) - crypto_free_tfm(_priv->rx_tfm_arc4); + crypto_free_blkcipher(_priv->rx_tfm_arc4); } kfree(priv); } @@ -344,6 +351,7 @@ static int ieee80211_tkip_hdr(struct sk_buff *skb, int hdr_len, static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_tkip_data *tkey = priv; + struct blkcipher_desc desc = { .tfm = tkey->tx_tfm_arc4 }; int len; u8 rc4key[16], *pos, *icv; u32 crc; @@ -377,31 +385,17 @@ static int ieee80211_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); + crypto_blkcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16); sg.page = virt_to_page(pos); sg.offset = offset_in_page(pos); sg.length = len + 4; - crypto_cipher_encrypt(tkey->tx_tfm_arc4, &sg, &sg, len + 4); - - return 0; -} - -/* - * deal with seq counter wrapping correctly. - * refer to timer_after() for jiffies wrapping handling - */ -static inline int tkip_replay_check(u32 iv32_n, u16 iv16_n, - u32 iv32_o, u16 iv16_o) -{ - if ((s32)iv32_n - (s32)iv32_o < 0 || - (iv32_n == iv32_o && iv16_n <= iv16_o)) - return 1; - return 0; + return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4); } static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_tkip_data *tkey = priv; + struct blkcipher_desc desc = { .tfm = tkey->rx_tfm_arc4 }; u8 rc4key[16]; u8 keyidx, *pos; u32 iv32; @@ -472,11 +466,18 @@ static int ieee80211_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); + crypto_blkcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16); sg.page = virt_to_page(pos); sg.offset = offset_in_page(pos); sg.length = plen + 4; - crypto_cipher_decrypt(tkey->rx_tfm_arc4, &sg, &sg, plen + 4); + if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4)) { + if (net_ratelimit()) { + printk(KERN_DEBUG ": TKIP: failed to decrypt " + "received packet from " MAC_FMT "\n", + MAC_ARG(hdr->addr2)); + } + return -7; + } crc = ~crc32_le(~0, pos, plen); icv[0] = crc; @@ -510,9 +511,10 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv) return keyidx; } -static int michael_mic(struct crypto_tfm *tfm_michael, u8 * key, u8 * hdr, +static int michael_mic(struct crypto_hash *tfm_michael, u8 * key, u8 * hdr, u8 * data, size_t data_len, u8 * mic) { + struct hash_desc desc; struct scatterlist sg[2]; if (tfm_michael == NULL) { @@ -527,12 +529,12 @@ static int michael_mic(struct crypto_tfm *tfm_michael, u8 * key, u8 * hdr, sg[1].offset = offset_in_page(data); sg[1].length = data_len; - crypto_digest_init(tfm_michael); - crypto_digest_setkey(tfm_michael, key, 8); - crypto_digest_update(tfm_michael, sg, 2); - crypto_digest_final(tfm_michael, mic); + if (crypto_hash_setkey(tfm_michael, key, 8)) + return -1; - return 0; + desc.tfm = tfm_michael; + desc.flags = 0; + return crypto_hash_digest(&desc, sg, data_len + 16, mic); } static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr) @@ -656,10 +658,10 @@ static int ieee80211_tkip_set_key(void *key, int len, u8 * seq, void *priv) { struct ieee80211_tkip_data *tkey = priv; int keyidx; - struct crypto_tfm *tfm = tkey->tx_tfm_michael; - struct crypto_tfm *tfm2 = tkey->tx_tfm_arc4; - struct crypto_tfm *tfm3 = tkey->rx_tfm_michael; - struct crypto_tfm *tfm4 = tkey->rx_tfm_arc4; + struct crypto_hash *tfm = tkey->tx_tfm_michael; + struct crypto_blkcipher *tfm2 = tkey->tx_tfm_arc4; + struct crypto_hash *tfm3 = tkey->rx_tfm_michael; + struct crypto_blkcipher *tfm4 = tkey->rx_tfm_arc4; keyidx = tkey->key_idx; memset(tkey, 0, sizeof(*tkey)); diff --git a/net/ieee80211/ieee80211_crypt_wep.c b/net/ieee80211/ieee80211_crypt_wep.c index b435b28857ed..9eeec13c28b0 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> @@ -32,8 +33,8 @@ struct prism2_wep_data { u8 key[WEP_KEY_LEN + 1]; u8 key_len; u8 key_idx; - struct crypto_tfm *tx_tfm; - struct crypto_tfm *rx_tfm; + struct crypto_blkcipher *tx_tfm; + struct crypto_blkcipher *rx_tfm; }; static void *prism2_wep_init(int keyidx) @@ -45,15 +46,16 @@ static void *prism2_wep_init(int keyidx) goto fail; priv->key_idx = keyidx; - priv->tx_tfm = crypto_alloc_tfm("arc4", 0); - if (priv->tx_tfm == NULL) { + priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->tx_tfm)) { printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate " "crypto API arc4\n"); + priv->tfm = NULL; goto fail; } - priv->rx_tfm = crypto_alloc_tfm("arc4", 0); - if (priv->rx_tfm == NULL) { + priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(priv->rx_tfm)) { printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate " "crypto API arc4\n"); goto fail; @@ -66,9 +68,9 @@ static void *prism2_wep_init(int keyidx) fail: if (priv) { if (priv->tx_tfm) - crypto_free_tfm(priv->tx_tfm); + crypto_free_blkcipher(priv->tx_tfm); if (priv->rx_tfm) - crypto_free_tfm(priv->rx_tfm); + crypto_free_blkcipher(priv->rx_tfm); kfree(priv); } return NULL; @@ -79,9 +81,9 @@ static void prism2_wep_deinit(void *priv) struct prism2_wep_data *_priv = priv; if (_priv) { if (_priv->tx_tfm) - crypto_free_tfm(_priv->tx_tfm); + crypto_free_blkcipher(_priv->tx_tfm); if (_priv->rx_tfm) - crypto_free_tfm(_priv->rx_tfm); + crypto_free_blkcipher(_priv->rx_tfm); } kfree(priv); } @@ -133,6 +135,7 @@ 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->tx_tfm }; u32 crc, klen, len; u8 *pos, *icv; struct scatterlist sg; @@ -164,13 +167,11 @@ 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->tx_tfm, key, klen); + crypto_blkcipher_setkey(wep->tx_tfm, key, klen); sg.page = virt_to_page(pos); sg.offset = offset_in_page(pos); sg.length = len + 4; - crypto_cipher_encrypt(wep->tx_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 @@ -183,6 +184,7 @@ 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->rx_tfm }; u32 crc, klen, plen; u8 key[WEP_KEY_LEN + 3]; u8 keyidx, *pos, icv[4]; @@ -207,11 +209,12 @@ 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->rx_tfm, key, klen); + crypto_blkcipher_setkey(wep->rx_tfm, key, klen); sg.page = virt_to_page(pos); sg.offset = offset_in_page(pos); sg.length = plen + 4; - crypto_cipher_decrypt(wep->rx_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; |
