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Diffstat (limited to 'package/kernel/mac80211/patches/100-revert_aes_ccm_port.patch')
-rw-r--r--package/kernel/mac80211/patches/100-revert_aes_ccm_port.patch347
1 files changed, 0 insertions, 347 deletions
diff --git a/package/kernel/mac80211/patches/100-revert_aes_ccm_port.patch b/package/kernel/mac80211/patches/100-revert_aes_ccm_port.patch
deleted file mode 100644
index cb14c0bc38..0000000000
--- a/package/kernel/mac80211/patches/100-revert_aes_ccm_port.patch
+++ /dev/null
@@ -1,347 +0,0 @@
---- a/net/mac80211/Kconfig
-+++ b/net/mac80211/Kconfig
-@@ -5,7 +5,6 @@ config MAC80211
- depends on CRYPTO
- depends on CRYPTO_ARC4
- depends on CRYPTO_AES
-- select BACKPORT_CRYPTO_CCM
- depends on CRC32
- select BACKPORT_AVERAGE
- ---help---
---- a/net/mac80211/aes_ccm.c
-+++ b/net/mac80211/aes_ccm.c
-@@ -2,8 +2,6 @@
- * Copyright 2003-2004, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- *
-- * Rewrite: Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
-- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-@@ -19,76 +17,134 @@
- #include "key.h"
- #include "aes_ccm.h"
-
--void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
-- u8 *data, size_t data_len, u8 *mic)
-+static void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *scratch, u8 *a)
-+{
-+ int i;
-+ u8 *b_0, *aad, *b, *s_0;
-+
-+ b_0 = scratch + 3 * AES_BLOCK_SIZE;
-+ aad = scratch + 4 * AES_BLOCK_SIZE;
-+ b = scratch;
-+ s_0 = scratch + AES_BLOCK_SIZE;
-+
-+ crypto_cipher_encrypt_one(tfm, b, b_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);
-+
-+ /* Mask out bits from auth-only-b_0 */
-+ b_0[0] &= 0x07;
-+
-+ /* 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);
-+}
-+
-+
-+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
-+ u8 *data, size_t data_len,
-+ u8 *cdata, u8 *mic)
- {
-- struct scatterlist assoc, pt, ct[2];
-+ int i, j, last_len, num_blocks;
-+ u8 *pos, *cpos, *b, *s_0, *e, *b_0;
-
-- char aead_req_data[sizeof(struct aead_request) +
-- crypto_aead_reqsize(tfm)]
-- __aligned(__alignof__(struct aead_request));
-- struct aead_request *aead_req = (void *) aead_req_data;
--
-- memset(aead_req, 0, sizeof(aead_req_data));
--
-- sg_init_one(&pt, data, data_len);
-- sg_init_one(&assoc, &aad[2], be16_to_cpup((__be16 *)aad));
-- sg_init_table(ct, 2);
-- sg_set_buf(&ct[0], data, data_len);
-- sg_set_buf(&ct[1], mic, IEEE80211_CCMP_MIC_LEN);
--
-- aead_request_set_tfm(aead_req, tfm);
-- aead_request_set_assoc(aead_req, &assoc, assoc.length);
-- aead_request_set_crypt(aead_req, &pt, ct, data_len, b_0);
-+ b = scratch;
-+ s_0 = scratch + AES_BLOCK_SIZE;
-+ e = scratch + 2 * AES_BLOCK_SIZE;
-+ b_0 = scratch + 3 * AES_BLOCK_SIZE;
-+
-+ num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
-+ last_len = data_len % AES_BLOCK_SIZE;
-+ aes_ccm_prepare(tfm, scratch, b);
-+
-+ /* Process payload blocks */
-+ pos = data;
-+ cpos = cdata;
-+ for (j = 1; j <= num_blocks; j++) {
-+ int blen = (j == num_blocks && last_len) ?
-+ last_len : AES_BLOCK_SIZE;
-+
-+ /* Authentication followed by encryption */
-+ for (i = 0; i < blen; i++)
-+ b[i] ^= pos[i];
-+ crypto_cipher_encrypt_one(tfm, b, b);
-+
-+ 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];
-+ }
-
-- crypto_aead_encrypt(aead_req);
-+ for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++)
-+ mic[i] = b[i] ^ s_0[i];
- }
-
--int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
-- u8 *data, size_t data_len, u8 *mic)
-+
-+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
-+ u8 *cdata, size_t data_len, u8 *mic, u8 *data)
- {
-- struct scatterlist assoc, pt, ct[2];
-- char aead_req_data[sizeof(struct aead_request) +
-- crypto_aead_reqsize(tfm)]
-- __aligned(__alignof__(struct aead_request));
-- struct aead_request *aead_req = (void *) aead_req_data;
--
-- memset(aead_req, 0, sizeof(aead_req_data));
--
-- sg_init_one(&pt, data, data_len);
-- sg_init_one(&assoc, &aad[2], be16_to_cpup((__be16 *)aad));
-- sg_init_table(ct, 2);
-- sg_set_buf(&ct[0], data, data_len);
-- sg_set_buf(&ct[1], mic, IEEE80211_CCMP_MIC_LEN);
--
-- aead_request_set_tfm(aead_req, tfm);
-- aead_request_set_assoc(aead_req, &assoc, assoc.length);
-- aead_request_set_crypt(aead_req, ct, &pt,
-- data_len + IEEE80211_CCMP_MIC_LEN, b_0);
-+ int i, j, last_len, num_blocks;
-+ u8 *pos, *cpos, *b, *s_0, *a, *b_0;
-+
-+ b = scratch;
-+ s_0 = scratch + AES_BLOCK_SIZE;
-+ a = scratch + 2 * AES_BLOCK_SIZE;
-+ b_0 = scratch + 3 * AES_BLOCK_SIZE;
-+
-+ num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
-+ last_len = data_len % AES_BLOCK_SIZE;
-+ aes_ccm_prepare(tfm, scratch, a);
-+
-+ /* Process payload blocks */
-+ cpos = cdata;
-+ pos = data;
-+ for (j = 1; j <= num_blocks; j++) {
-+ int blen = (j == num_blocks && last_len) ?
-+ last_len : AES_BLOCK_SIZE;
-+
-+ /* Decryption followed by authentication */
-+ b_0[14] = (j >> 8) & 0xff;
-+ b_0[15] = j & 0xff;
-+ crypto_cipher_encrypt_one(tfm, b, b_0);
-+ for (i = 0; i < blen; i++) {
-+ *pos = *cpos++ ^ b[i];
-+ a[i] ^= *pos++;
-+ }
-+ crypto_cipher_encrypt_one(tfm, a, a);
-+ }
-+
-+ for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++) {
-+ if ((mic[i] ^ s_0[i]) != a[i])
-+ return -1;
-+ }
-
-- return crypto_aead_decrypt(aead_req);
-+ return 0;
- }
-
--struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[])
-+
-+struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[])
- {
-- 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;
--
-- err = crypto_aead_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
-- if (!err)
-- err = crypto_aead_setauthsize(tfm, IEEE80211_CCMP_MIC_LEN);
-- if (!err)
-- return tfm;
-+ tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
-+ if (!IS_ERR(tfm))
-+ crypto_cipher_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
-
-- crypto_free_aead(tfm);
-- return ERR_PTR(err);
-+ return tfm;
- }
-
--void ieee80211_aes_key_free(struct crypto_aead *tfm)
-+
-+void ieee80211_aes_key_free(struct crypto_cipher *tfm)
- {
-- crypto_free_aead(tfm);
-+ crypto_free_cipher(tfm);
- }
---- a/net/mac80211/aes_ccm.h
-+++ b/net/mac80211/aes_ccm.h
-@@ -12,11 +12,13 @@
-
- #include <linux/crypto.h>
-
--struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[]);
--void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
-- u8 *data, size_t data_len, u8 *mic);
--int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
-- u8 *data, size_t data_len, u8 *mic);
--void ieee80211_aes_key_free(struct crypto_aead *tfm);
-+struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[]);
-+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
-+ u8 *data, size_t data_len,
-+ u8 *cdata, u8 *mic);
-+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
-+ u8 *cdata, size_t data_len,
-+ u8 *mic, u8 *data);
-+void ieee80211_aes_key_free(struct crypto_cipher *tfm);
-
- #endif /* AES_CCM_H */
---- a/net/mac80211/key.h
-+++ b/net/mac80211/key.h
-@@ -84,7 +84,7 @@ struct ieee80211_key {
- * Management frames.
- */
- u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN];
-- struct crypto_aead *tfm;
-+ struct crypto_cipher *tfm;
- u32 replays; /* dot11RSNAStatsCCMPReplays */
- } ccmp;
- struct {
---- a/net/mac80211/wpa.c
-+++ b/net/mac80211/wpa.c
-@@ -302,15 +302,22 @@ ieee80211_crypto_tkip_decrypt(struct iee
- }
-
-
--static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad)
-+static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
-+ int encrypted)
- {
- __le16 mask_fc;
- int a4_included, mgmt;
- u8 qos_tid;
-- u16 len_a;
-+ u8 *b_0, *aad;
-+ u16 data_len, len_a;
- unsigned int hdrlen;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-
-+ memset(scratch, 0, 6 * AES_BLOCK_SIZE);
-+
-+ b_0 = scratch + 3 * AES_BLOCK_SIZE;
-+ aad = scratch + 4 * AES_BLOCK_SIZE;
-+
- /*
- * Mask FC: zero subtype b4 b5 b6 (if not mgmt)
- * Retry, PwrMgt, MoreData; set Protected
-@@ -332,21 +339,20 @@ static void ccmp_special_blocks(struct s
- else
- qos_tid = 0;
-
-- /* In CCM, the initial vectors (IV) used for CTR mode encryption and CBC
-- * mode authentication are not allowed to collide, yet both are derived
-- * from this vector b_0. We only set L := 1 here to indicate that the
-- * data size can be represented in (L+1) bytes. The CCM layer will take
-- * care of storing the data length in the top (L+1) bytes and setting
-- * and clearing the other bits as is required to derive the two IVs.
-- */
-- b_0[0] = 0x1;
-+ data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN;
-+ if (encrypted)
-+ data_len -= IEEE80211_CCMP_MIC_LEN;
-
-+ /* First block, b_0 */
-+ b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
- /* Nonce: Nonce Flags | A2 | PN
- * Nonce Flags: Priority (b0..b3) | Management (b4) | Reserved (b5..b7)
- */
- b_0[1] = qos_tid | (mgmt << 4);
- memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
- memcpy(&b_0[8], pn, IEEE80211_CCMP_PN_LEN);
-+ /* l(m) */
-+ put_unaligned_be16(data_len, &b_0[14]);
-
- /* AAD (extra authenticate-only data) / masked 802.11 header
- * FC | A1 | A2 | A3 | SC | [A4] | [QC] */
-@@ -402,8 +408,7 @@ static int ccmp_encrypt_skb(struct ieee8
- u8 *pos;
- u8 pn[6];
- u64 pn64;
-- u8 aad[2 * AES_BLOCK_SIZE];
-- u8 b_0[AES_BLOCK_SIZE];
-+ u8 scratch[6 * AES_BLOCK_SIZE];
-
- if (info->control.hw_key &&
- !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
-@@ -457,9 +462,9 @@ static int ccmp_encrypt_skb(struct ieee8
- return 0;
-
- pos += IEEE80211_CCMP_HDR_LEN;
-- ccmp_special_blocks(skb, pn, b_0, aad);
-- ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, b_0, aad, pos, len,
-- skb_put(skb, IEEE80211_CCMP_MIC_LEN));
-+ ccmp_special_blocks(skb, pn, scratch, 0);
-+ ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, pos, len,
-+ pos, skb_put(skb, IEEE80211_CCMP_MIC_LEN));
-
- return 0;
- }
-@@ -522,16 +527,16 @@ ieee80211_crypto_ccmp_decrypt(struct iee
- }
-
- if (!(status->flag & RX_FLAG_DECRYPTED)) {
-- u8 aad[2 * AES_BLOCK_SIZE];
-- u8 b_0[AES_BLOCK_SIZE];
-+ u8 scratch[6 * AES_BLOCK_SIZE];
- /* hardware didn't decrypt/verify MIC */
-- ccmp_special_blocks(skb, pn, b_0, aad);
-+ ccmp_special_blocks(skb, pn, scratch, 1);
-
- if (ieee80211_aes_ccm_decrypt(
-- key->u.ccmp.tfm, b_0, aad,
-+ key->u.ccmp.tfm, scratch,
- skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
- data_len,
-- skb->data + skb->len - IEEE80211_CCMP_MIC_LEN))
-+ skb->data + skb->len - IEEE80211_CCMP_MIC_LEN,
-+ skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN))
- return RX_DROP_UNUSABLE;
- }
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 10:39:19 +0000