mac80211: aes_ccm.c remove crypto wrapper and extra args
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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feccb46694
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5fdae6b37e
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@ -16,31 +16,28 @@
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#include "key.h"
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#include "aes_ccm.h"
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static void ieee80211_aes_encrypt(struct crypto_cipher *tfm,
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const u8 pt[16], u8 ct[16])
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{
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crypto_cipher_encrypt_one(tfm, ct, pt);
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}
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static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
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u8 *b, u8 *s_0, u8 *a)
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static void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *scratch, u8 *a)
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{
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int i;
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u8 *b_0, *aad, *b, *s_0;
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ieee80211_aes_encrypt(tfm, b_0, b);
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b_0 = scratch + 3 * AES_BLOCK_LEN;
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aad = scratch + 4 * AES_BLOCK_LEN;
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b = scratch;
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s_0 = scratch + AES_BLOCK_LEN;
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crypto_cipher_encrypt_one(tfm, b, b_0);
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/* Extra Authenticate-only data (always two AES blocks) */
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for (i = 0; i < AES_BLOCK_LEN; i++)
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aad[i] ^= b[i];
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ieee80211_aes_encrypt(tfm, aad, b);
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crypto_cipher_encrypt_one(tfm, b, aad);
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aad += AES_BLOCK_LEN;
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for (i = 0; i < AES_BLOCK_LEN; i++)
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aad[i] ^= b[i];
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ieee80211_aes_encrypt(tfm, aad, a);
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crypto_cipher_encrypt_one(tfm, a, aad);
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/* Mask out bits from auth-only-b_0 */
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b_0[0] &= 0x07;
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@ -48,7 +45,7 @@ static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
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/* S_0 is used to encrypt T (= MIC) */
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b_0[14] = 0;
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b_0[15] = 0;
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ieee80211_aes_encrypt(tfm, b_0, s_0);
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crypto_cipher_encrypt_one(tfm, s_0, b_0);
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}
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@ -67,7 +64,7 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
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num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
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last_len = data_len % AES_BLOCK_LEN;
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aes_ccm_prepare(tfm, b_0, aad, b, s_0, b);
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aes_ccm_prepare(tfm, scratch, b);
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/* Process payload blocks */
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pos = data;
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@ -79,11 +76,11 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
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/* Authentication followed by encryption */
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for (i = 0; i < blen; i++)
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b[i] ^= pos[i];
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ieee80211_aes_encrypt(tfm, b, b);
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crypto_cipher_encrypt_one(tfm, b, b);
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b_0[14] = (j >> 8) & 0xff;
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b_0[15] = j & 0xff;
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ieee80211_aes_encrypt(tfm, b_0, e);
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crypto_cipher_encrypt_one(tfm, e, b_0);
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for (i = 0; i < blen; i++)
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*cpos++ = *pos++ ^ e[i];
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}
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@ -107,7 +104,7 @@ int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
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num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
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last_len = data_len % AES_BLOCK_LEN;
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aes_ccm_prepare(tfm, b_0, aad, b, s_0, a);
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aes_ccm_prepare(tfm, scratch, a);
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/* Process payload blocks */
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cpos = cdata;
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@ -119,13 +116,12 @@ int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
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/* Decryption followed by authentication */
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b_0[14] = (j >> 8) & 0xff;
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b_0[15] = j & 0xff;
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ieee80211_aes_encrypt(tfm, b_0, b);
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crypto_cipher_encrypt_one(tfm, b, b_0);
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for (i = 0; i < blen; i++) {
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*pos = *cpos++ ^ b[i];
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a[i] ^= *pos++;
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}
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ieee80211_aes_encrypt(tfm, a, a);
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crypto_cipher_encrypt_one(tfm, a, a);
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}
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for (i = 0; i < CCMP_MIC_LEN; i++) {
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