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[openwrt/openwrt.git] / package / mac80211 / src / net / mac80211 / aes_ccm.c

diff --git a/package/mac80211/src/net/mac80211/aes_ccm.c b/package/mac80211/src/net/mac80211/aes_ccm.c
deleted file mode 100644 (file)
index e62fe55..0000000
--- a/package/mac80211/src/net/mac80211/aes_ccm.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * Copyright 2003-2004, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- *
- * 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.
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/crypto.h>
-#include <linux/err.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_key.h"
-#include "aes_ccm.h"
-
-
-static void ieee80211_aes_encrypt(struct crypto_cipher *tfm,
-                                 const u8 pt[16], u8 ct[16])
-{
-       crypto_cipher_encrypt_one(tfm, ct, pt);
-}
-
-
-static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
-                                  u8 *b, u8 *s_0, u8 *a)
-{
-       int i;
-
-       ieee80211_aes_encrypt(tfm, b_0, b);
-
-       /* Extra Authenticate-only data (always two AES blocks) */
-       for (i = 0; i < AES_BLOCK_LEN; i++)
-               aad[i] ^= b[i];
-       ieee80211_aes_encrypt(tfm, aad, b);
-
-       aad += AES_BLOCK_LEN;
-
-       for (i = 0; i < AES_BLOCK_LEN; i++)
-               aad[i] ^= b[i];
-       ieee80211_aes_encrypt(tfm, aad, a);
-
-       /* 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;
-       ieee80211_aes_encrypt(tfm, b_0, s_0);
-}
-
-
-void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
-                              u8 *b_0, u8 *aad, u8 *data, size_t data_len,
-                              u8 *cdata, u8 *mic)
-{
-       int i, j, last_len, num_blocks;
-       u8 *pos, *cpos, *b, *s_0, *e;
-
-       b = scratch;
-       s_0 = scratch + AES_BLOCK_LEN;
-       e = scratch + 2 * AES_BLOCK_LEN;
-
-       num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
-       last_len = data_len % AES_BLOCK_LEN;
-       aes_ccm_prepare(tfm, b_0, aad, b, s_0, 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_LEN;
-
-               /* Authentication followed by encryption */
-               for (i = 0; i < blen; i++)
-                       b[i] ^= pos[i];
-               ieee80211_aes_encrypt(tfm, b, b);
-
-               b_0[14] = (j >> 8) & 0xff;
-               b_0[15] = j & 0xff;
-               ieee80211_aes_encrypt(tfm, b_0, e);
-               for (i = 0; i < blen; i++)
-                       *cpos++ = *pos++ ^ e[i];
-       }
-
-       for (i = 0; i < CCMP_MIC_LEN; i++)
-               mic[i] = b[i] ^ s_0[i];
-}
-
-
-int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
-                             u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
-                             u8 *mic, u8 *data)
-{
-       int i, j, last_len, num_blocks;
-       u8 *pos, *cpos, *b, *s_0, *a;
-
-       b = scratch;
-       s_0 = scratch + AES_BLOCK_LEN;
-       a = scratch + 2 * AES_BLOCK_LEN;
-
-       num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
-       last_len = data_len % AES_BLOCK_LEN;
-       aes_ccm_prepare(tfm, b_0, aad, b, s_0, 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_LEN;
-
-               /* Decryption followed by authentication */
-               b_0[14] = (j >> 8) & 0xff;
-               b_0[15] = j & 0xff;
-               ieee80211_aes_encrypt(tfm, b_0, b);
-               for (i = 0; i < blen; i++) {
-                       *pos = *cpos++ ^ b[i];
-                       a[i] ^= *pos++;
-               }
-
-               ieee80211_aes_encrypt(tfm, a, a);
-       }
-
-       for (i = 0; i < CCMP_MIC_LEN; i++) {
-               if ((mic[i] ^ s_0[i]) != a[i])
-                       return -1;
-       }
-
-       return 0;
-}
-
-
-struct crypto_cipher * ieee80211_aes_key_setup_encrypt(const u8 key[])
-{
-       struct crypto_cipher *tfm;
-
-       tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
-       if (IS_ERR(tfm))
-               return NULL;
-
-       crypto_cipher_setkey(tfm, key, ALG_CCMP_KEY_LEN);
-
-       return tfm;
-}
-
-
-void ieee80211_aes_key_free(struct crypto_cipher *tfm)
-{
-       if (tfm)
-               crypto_free_cipher(tfm);
-}