depends on CRYPTO_AES
- select BPAUTO_CRYPTO_CCM
- depends on CRYPTO_GCM
+ depends on CRYPTO_CMAC
depends on CRC32
---help---
- This option enables the hardware independent IEEE 802.11
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -16,9 +16,7 @@ mac80211-y := \
- struct aead_request *aead_req;
- int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
- u8 *__aad;
--
++ int i;
+
- aead_req = kzalloc(reqsize + CCM_AAD_LEN, GFP_ATOMIC);
- if (!aead_req)
- return -ENOMEM;
--
++ crypto_cipher_encrypt_one(tfm, b, b_0);
+
- __aad = (u8 *)aead_req + reqsize;
- memcpy(__aad, aad, CCM_AAD_LEN);
--
++ /* Extra Authenticate-only data (always two AES blocks) */
++ for (i = 0; i < AES_BLOCK_SIZE; i++)
++ aad[i] ^= b[i];
++ crypto_cipher_encrypt_one(tfm, b, aad);
+
- sg_init_table(sg, 3);
- sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
- sg_set_buf(&sg[1], data, data_len);
- sg_set_buf(&sg[2], mic, mic_len);
--
++ aad += AES_BLOCK_SIZE;
+
- aead_request_set_tfm(aead_req, tfm);
- aead_request_set_crypt(aead_req, sg, sg, data_len, b_0);
- aead_request_set_ad(aead_req, sg[0].length);
-+ int i;
-
-- crypto_aead_encrypt(aead_req);
-- kzfree(aead_req);
-+ crypto_cipher_encrypt_one(tfm, b, b_0);
-
-- return 0;
-+ /* Extra Authenticate-only data (always two AES blocks) */
-+ for (i = 0; i < AES_BLOCK_SIZE; i++)
-+ aad[i] ^= b[i];
-+ crypto_cipher_encrypt_one(tfm, b, aad);
-+
-+ aad += AES_BLOCK_SIZE;
-+
+ for (i = 0; i < AES_BLOCK_SIZE; i++)
+ aad[i] ^= b[i];
+ crypto_cipher_encrypt_one(tfm, a, aad);
-+
+
+- crypto_aead_encrypt(aead_req);
+- kzfree(aead_req);
+ /* Mask out bits from auth-only-b_0 */
+ b_0[0] &= 0x07;
-+
+
+- return 0;
+ /* S_0 is used to encrypt T (= MIC) */
+ b_0[14] = 0;
+ b_0[15] = 0;
+ crypto_cipher_encrypt_one(tfm, s_0, b_0);
-+}
-+
+ }
+
+-int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
+- u8 *data, size_t data_len, u8 *mic,
+- size_t mic_len)
+
+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
+ u8 *data, size_t data_len, u8 *mic,
+ size_t mic_len)
-+{
+ {
+- struct scatterlist sg[3];
+- struct aead_request *aead_req;
+- int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
+- u8 *__aad;
+- int err;
+ int i, j, last_len, num_blocks;
+ u8 b[AES_BLOCK_SIZE];
+ u8 s_0[AES_BLOCK_SIZE];
+ u8 e[AES_BLOCK_SIZE];
+ u8 *pos, *cpos;
-+
+
+- if (data_len == 0)
+- return -EINVAL;
+ num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
+ last_len = data_len % AES_BLOCK_SIZE;
+ aes_ccm_prepare(tfm, b_0, aad, s_0, b, b);
-+
+
+- aead_req = kzalloc(reqsize + CCM_AAD_LEN, GFP_ATOMIC);
+- if (!aead_req)
+- return -ENOMEM;
+ /* Process payload blocks */
+ pos = data;
+ cpos = data;
+ for (j = 1; j <= num_blocks; j++) {
+ int blen = (j == num_blocks && last_len) ?
+ last_len : AES_BLOCK_SIZE;
-+
+
+- __aad = (u8 *)aead_req + reqsize;
+- memcpy(__aad, aad, CCM_AAD_LEN);
+ /* Authentication followed by encryption */
+ for (i = 0; i < blen; i++)
+ b[i] ^= pos[i];
+ crypto_cipher_encrypt_one(tfm, b, b);
-+
+
+- sg_init_table(sg, 3);
+- sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
+- sg_set_buf(&sg[1], data, data_len);
+- sg_set_buf(&sg[2], mic, mic_len);
+ b_0[14] = (j >> 8) & 0xff;
+ b_0[15] = j & 0xff;
+ crypto_cipher_encrypt_one(tfm, e, b_0);
+ for (i = 0; i < blen; i++)
+ *cpos++ = *pos++ ^ e[i];
+ }
-+
-+ for (i = 0; i < mic_len; i++)
-+ mic[i] = b[i] ^ s_0[i];
- }
--int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
-+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
- u8 *data, size_t data_len, u8 *mic,
- size_t mic_len)
- {
-- struct scatterlist sg[3];
-- struct aead_request *aead_req;
-- int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
-- u8 *__aad;
-- int err;
--
-- if (data_len == 0)
-- return -EINVAL;
--
-- aead_req = kzalloc(reqsize + CCM_AAD_LEN, GFP_ATOMIC);
-- if (!aead_req)
-- return -ENOMEM;
--
-- __aad = (u8 *)aead_req + reqsize;
-- memcpy(__aad, aad, CCM_AAD_LEN);
--
-- sg_init_table(sg, 3);
-- sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
-- sg_set_buf(&sg[1], data, data_len);
-- sg_set_buf(&sg[2], mic, mic_len);
--
- aead_request_set_tfm(aead_req, tfm);
- aead_request_set_crypt(aead_req, sg, sg, data_len + mic_len, b_0);
- aead_request_set_ad(aead_req, sg[0].length);
++ for (i = 0; i < mic_len; i++)
++ mic[i] = b[i] ^ s_0[i];
++}
+
+- err = crypto_aead_decrypt(aead_req);
+- kzfree(aead_req);
++int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
++ u8 *data, size_t data_len, u8 *mic,
++ size_t mic_len)
++{
+ int i, j, last_len, num_blocks;
+ u8 *pos, *cpos;
+ u8 a[AES_BLOCK_SIZE];
+ u8 b[AES_BLOCK_SIZE];
+ u8 s_0[AES_BLOCK_SIZE];
-+
+
+- return err;
+ num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
+ last_len = data_len % AES_BLOCK_SIZE;
+ aes_ccm_prepare(tfm, b_0, aad, s_0, a, b);
+ if ((mic[i] ^ s_0[i]) != a[i])
+ return -1;
+ }
-
-- err = crypto_aead_decrypt(aead_req);
-- kzfree(aead_req);
--
-- return err;
++
+ return 0;
}
{
- struct crypto_aead *tfm;
- int err;
-+ struct crypto_cipher *tfm;
-
+-
- tfm = crypto_alloc_aead("ccm(aes)", 0, CRYPTO_ALG_ASYNC);
- if (IS_ERR(tfm))
- return tfm;
--
++ struct crypto_cipher *tfm;
+
- err = crypto_aead_setkey(tfm, key, key_len);
- if (err)
- goto free_aead;
struct {
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
-@@ -305,7 +305,8 @@ ieee80211_crypto_tkip_decrypt(struct iee
+@@ -306,7 +306,8 @@ ieee80211_crypto_tkip_decrypt(struct iee
}
{
__le16 mask_fc;
int a4_included, mgmt;
-@@ -335,14 +336,8 @@ static void ccmp_special_blocks(struct s
+@@ -336,14 +337,8 @@ static void ccmp_special_blocks(struct s
else
qos_tid = 0;
/* Nonce: Nonce Flags | A2 | PN
* Nonce Flags: Priority (b0..b3) | Management (b4) | Reserved (b5..b7)
-@@ -350,6 +345,8 @@ static void ccmp_special_blocks(struct s
+@@ -351,6 +346,8 @@ static void ccmp_special_blocks(struct s
b_0[1] = qos_tid | (mgmt << 4);
memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
memcpy(&b_0[8], pn, IEEE80211_CCMP_PN_LEN);
/* AAD (extra authenticate-only data) / masked 802.11 header
* FC | A1 | A2 | A3 | SC | [A4] | [QC] */
-@@ -406,7 +403,7 @@ static int ccmp_encrypt_skb(struct ieee8
+@@ -407,7 +404,7 @@ static int ccmp_encrypt_skb(struct ieee8
u8 *pos;
u8 pn[6];
u64 pn64;
u8 b_0[AES_BLOCK_SIZE];
if (info->control.hw_key &&
-@@ -461,9 +458,11 @@ static int ccmp_encrypt_skb(struct ieee8
+@@ -462,9 +459,11 @@ static int ccmp_encrypt_skb(struct ieee8
return 0;
pos += IEEE80211_CCMP_HDR_LEN;
}
-@@ -536,7 +535,7 @@ ieee80211_crypto_ccmp_decrypt(struct iee
+@@ -537,7 +536,7 @@ ieee80211_crypto_ccmp_decrypt(struct iee
u8 aad[2 * AES_BLOCK_SIZE];
u8 b_0[AES_BLOCK_SIZE];
/* hardware didn't decrypt/verify MIC */
if (ieee80211_aes_ccm_decrypt(
key->u.ccmp.tfm, b_0, aad,
-@@ -638,7 +637,7 @@ static int gcmp_encrypt_skb(struct ieee8
+@@ -639,7 +638,7 @@ static int gcmp_encrypt_skb(struct ieee8
u8 *pos;
u8 pn[6];
u64 pn64;
u8 j_0[AES_BLOCK_SIZE];
if (info->control.hw_key &&
-@@ -695,8 +694,10 @@ static int gcmp_encrypt_skb(struct ieee8
+@@ -696,8 +695,10 @@ static int gcmp_encrypt_skb(struct ieee8
pos += IEEE80211_GCMP_HDR_LEN;
gcmp_special_blocks(skb, pn, j_0, aad);
}
ieee80211_tx_result
-@@ -1120,9 +1121,9 @@ ieee80211_crypto_aes_gmac_encrypt(struct
+@@ -1121,9 +1122,9 @@ ieee80211_crypto_aes_gmac_encrypt(struct
struct ieee80211_key *key = tx->key;
struct ieee80211_mmie_16 *mmie;
struct ieee80211_hdr *hdr;
if (WARN_ON(skb_queue_len(&tx->skbs) != 1))
return TX_DROP;
-@@ -1168,7 +1169,7 @@ ieee80211_crypto_aes_gmac_decrypt(struct
+@@ -1169,7 +1170,7 @@ ieee80211_crypto_aes_gmac_decrypt(struct
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_key *key = rx->key;
struct ieee80211_mmie_16 *mmie;
projects / openwrt / staging / dedeckeh.git / blobdiff