diff options
Diffstat (limited to 'package/kernel/mac80211/patches/100-remove-cryptoapi-dependencies.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/100-remove-cryptoapi-dependencies.patch | 124 |
1 files changed, 66 insertions, 58 deletions
diff --git a/package/kernel/mac80211/patches/100-remove-cryptoapi-dependencies.patch b/package/kernel/mac80211/patches/100-remove-cryptoapi-dependencies.patch index 7eb3d99..95fea44 100644 --- a/package/kernel/mac80211/patches/100-remove-cryptoapi-dependencies.patch +++ b/package/kernel/mac80211/patches/100-remove-cryptoapi-dependencies.patch @@ -43,118 +43,122 @@ - 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); -+ for (i = 0; i < AES_BLOCK_SIZE; i++) -+ aad[i] ^= b[i]; -+ crypto_cipher_encrypt_one(tfm, a, aad); ++ int i; - crypto_aead_encrypt(aead_req); - kzfree(aead_req); -+ /* Mask out bits from auth-only-b_0 */ -+ b_0[0] &= 0x07; ++ 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); ++ ++ /* 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); - } - --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]; + } - -- 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_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) -+{ + 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); + 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); @@ -181,7 +185,11 @@ + if ((mic[i] ^ s_0[i]) != a[i]) + return -1; + } -+ + +- err = crypto_aead_decrypt(aead_req); +- kzfree(aead_req); +- +- return err; + return 0; } @@ -194,12 +202,12 @@ { - 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; |