lkml.org 
[lkml]   [2020]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] staging: rtl8188eu: Reapply "staging:r8188eu: Use lib80211 to encrypt (CCMP) tx frames"
Date
Commit 515ce733e86e ("staging:r8188eu: Use lib80211 to encrypt (CCMP) tx frames")
was reverted because it caused scheduling while atomic bugs and hard
freezes. Experimentation showed that there were no freezes and no BUG
messages logged when lib80211_get_crypto_ops() was called directly
rather than indirectly through try_then_request_module().

Reapply "staging:r8188eu: Use lib80211 to encrypt (CCMP) tx frames"
with resolved revert conflicts and replace try_then_request_module()
with direct call to lib80211_get_crypto_ops().

Original commit message:
Put data to skb, decrypt with lib80211_crypt_ccmp, and place back to tx buffer.

Cc: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
---

v1 -> v2:
Added missing spaces around '+' and removed unnecessary parentheses.

if ((curfragnum+1) == pattrib->nr_frags)

if (curfragnum + 1 == pattrib->nr_frags)

drivers/staging/rtl8188eu/core/rtw_security.c | 778 ++----------------
1 file changed, 72 insertions(+), 706 deletions(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_security.c b/drivers/staging/rtl8188eu/core/rtw_security.c
index d2d562550eb7..b7a8c199de54 100644
--- a/drivers/staging/rtl8188eu/core/rtw_security.c
+++ b/drivers/staging/rtl8188eu/core/rtw_security.c
@@ -722,552 +722,106 @@ u32 rtw_tkip_decrypt(struct adapter *padapter, struct recv_frame *precvframe)
return res;
}

-/* 3 ===== AES related ===== */
-
-#define MAX_MSG_SIZE 2048
-/*****************************/
-/******** SBOX Table *********/
-/*****************************/
-
-static const u8 sbox_table[256] = {
- 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
- 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
- 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
- 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
- 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
- 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
- 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
- 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
- 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
- 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
- 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
- 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
- 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
- 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
- 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
- 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
- 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
- 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
- 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
- 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
- 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
- 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
- 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
- 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
- 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
- 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
- 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
- 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
- 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
- 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
- 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
- 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
-};
-
-/*****************************/
-/**** Function Prototypes ****/
-/*****************************/
-
-static void bitwise_xor(u8 *ina, u8 *inb, u8 *out);
-static void construct_mic_iv(u8 *mic_header1, int qc_exists, int a4_exists, u8 *mpdu, uint payload_length, u8 *pn_vector);
-static void construct_mic_header1(u8 *mic_header1, int header_length, u8 *mpdu);
-static void construct_mic_header2(u8 *mic_header2, u8 *mpdu, int a4_exists, int qc_exists);
-static void construct_ctr_preload(u8 *ctr_preload, int a4_exists, int qc_exists, u8 *mpdu, u8 *pn_vector, int c);
-static void xor_128(u8 *a, u8 *b, u8 *out);
-static void xor_32(u8 *a, u8 *b, u8 *out);
-static u8 sbox(u8 a);
-static void next_key(u8 *key, int round);
-static void byte_sub(u8 *in, u8 *out);
-static void shift_row(u8 *in, u8 *out);
-static void mix_column(u8 *in, u8 *out);
-static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext);
-
-/****************************************/
-/* aes128k128d() */
-/* Performs a 128 bit AES encrypt with */
-/* 128 bit data. */
-/****************************************/
-static void xor_128(u8 *a, u8 *b, u8 *out)
-{
- int i;
-
- for (i = 0; i < 16; i++)
- out[i] = a[i] ^ b[i];
-}
-
-static void xor_32(u8 *a, u8 *b, u8 *out)
-{
- int i;
-
- for (i = 0; i < 4; i++)
- out[i] = a[i] ^ b[i];
-}
-
-static u8 sbox(u8 a)
-{
- return sbox_table[(int)a];
-}
-
-static void next_key(u8 *key, int round)
-{
- u8 rcon;
- u8 sbox_key[4];
- static const u8 rcon_table[12] = {
- 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
- 0x1b, 0x36, 0x36, 0x36
- };
-
- sbox_key[0] = sbox(key[13]);
- sbox_key[1] = sbox(key[14]);
- sbox_key[2] = sbox(key[15]);
- sbox_key[3] = sbox(key[12]);
-
- rcon = rcon_table[round];
-
- xor_32(&key[0], sbox_key, &key[0]);
- key[0] = key[0] ^ rcon;
-
- xor_32(&key[4], &key[0], &key[4]);
- xor_32(&key[8], &key[4], &key[8]);
- xor_32(&key[12], &key[8], &key[12]);
-}
-
-static void byte_sub(u8 *in, u8 *out)
-{
- int i;
-
- for (i = 0; i < 16; i++)
- out[i] = sbox(in[i]);
-}
-
-static void shift_row(u8 *in, u8 *out)
-{
- out[0] = in[0];
- out[1] = in[5];
- out[2] = in[10];
- out[3] = in[15];
- out[4] = in[4];
- out[5] = in[9];
- out[6] = in[14];
- out[7] = in[3];
- out[8] = in[8];
- out[9] = in[13];
- out[10] = in[2];
- out[11] = in[7];
- out[12] = in[12];
- out[13] = in[1];
- out[14] = in[6];
- out[15] = in[11];
-}
-
-static void mix_column(u8 *in, u8 *out)
+u32 rtw_aes_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
- int i;
- u8 add1b[4];
- u8 add1bf7[4];
- u8 rotl[4];
- u8 swap_halves[4];
- u8 andf7[4];
- u8 rotr[4];
- u8 temp[4];
- u8 tempb[4];
-
- for (i = 0 ; i < 4; i++) {
- if ((in[i] & 0x80) == 0x80)
- add1b[i] = 0x1b;
- else
- add1b[i] = 0x00;
- }
-
- swap_halves[0] = in[2]; /* Swap halves */
- swap_halves[1] = in[3];
- swap_halves[2] = in[0];
- swap_halves[3] = in[1];
-
- rotl[0] = in[3]; /* Rotate left 8 bits */
- rotl[1] = in[0];
- rotl[2] = in[1];
- rotl[3] = in[2];
-
- andf7[0] = in[0] & 0x7f;
- andf7[1] = in[1] & 0x7f;
- andf7[2] = in[2] & 0x7f;
- andf7[3] = in[3] & 0x7f;
-
- for (i = 3; i > 0; i--) { /* logical shift left 1 bit */
- andf7[i] = andf7[i] << 1;
- if ((andf7[i - 1] & 0x80) == 0x80)
- andf7[i] = (andf7[i] | 0x01);
- }
- andf7[0] = andf7[0] << 1;
- andf7[0] = andf7[0] & 0xfe;
-
- xor_32(add1b, andf7, add1bf7);
-
- xor_32(in, add1bf7, rotr);
-
- temp[0] = rotr[0]; /* Rotate right 8 bits */
- rotr[0] = rotr[1];
- rotr[1] = rotr[2];
- rotr[2] = rotr[3];
- rotr[3] = temp[0];
-
- xor_32(add1bf7, rotr, temp);
- xor_32(swap_halves, rotl, tempb);
- xor_32(temp, tempb, out);
-}
-
-static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext)
-{
- int round;
- int i;
- u8 intermediatea[16];
- u8 intermediateb[16];
- u8 round_key[16];
-
- for (i = 0; i < 16; i++)
- round_key[i] = key[i];
- for (round = 0; round < 11; round++) {
- if (round == 0) {
- xor_128(round_key, data, ciphertext);
- next_key(round_key, round);
- } else if (round == 10) {
- byte_sub(ciphertext, intermediatea);
- shift_row(intermediatea, intermediateb);
- xor_128(intermediateb, round_key, ciphertext);
- } else { /* 1 - 9 */
- byte_sub(ciphertext, intermediatea);
- shift_row(intermediatea, intermediateb);
- mix_column(&intermediateb[0], &intermediatea[0]);
- mix_column(&intermediateb[4], &intermediatea[4]);
- mix_column(&intermediateb[8], &intermediatea[8]);
- mix_column(&intermediateb[12], &intermediatea[12]);
- xor_128(intermediatea, round_key, ciphertext);
- next_key(round_key, round);
- }
- }
-}
-
-/************************************************/
-/* construct_mic_iv() */
-/* Builds the MIC IV from header fields and PN */
-/************************************************/
-static void construct_mic_iv(u8 *mic_iv, int qc_exists, int a4_exists, u8 *mpdu,
- uint payload_length, u8 *pn_vector)
-{
- int i;
-
- mic_iv[0] = 0x59;
- if (qc_exists && a4_exists)
- mic_iv[1] = mpdu[30] & 0x0f; /* QoS_TC */
- if (qc_exists && !a4_exists)
- mic_iv[1] = mpdu[24] & 0x0f; /* mute bits 7-4 */
- if (!qc_exists)
- mic_iv[1] = 0x00;
- for (i = 2; i < 8; i++)
- mic_iv[i] = mpdu[i + 8]; /* mic_iv[2:7] = A2[0:5] = mpdu[10:15] */
- for (i = 8; i < 14; i++)
- mic_iv[i] = pn_vector[13 - i]; /* mic_iv[8:13] = PN[5:0] */
- mic_iv[14] = (unsigned char)(payload_length / 256);
- mic_iv[15] = (unsigned char)(payload_length % 256);
-}
-
-/************************************************/
-/* construct_mic_header1() */
-/* Builds the first MIC header block from */
-/* header fields. */
-/************************************************/
-static void construct_mic_header1(u8 *mic_header1, int header_length, u8 *mpdu)
-{
- mic_header1[0] = (u8)((header_length - 2) / 256);
- mic_header1[1] = (u8)((header_length - 2) % 256);
- mic_header1[2] = mpdu[0] & 0xcf; /* Mute CF poll & CF ack bits */
- mic_header1[3] = mpdu[1] & 0xc7; /* Mute retry, more data and pwr mgt bits */
- mic_header1[4] = mpdu[4]; /* A1 */
- mic_header1[5] = mpdu[5];
- mic_header1[6] = mpdu[6];
- mic_header1[7] = mpdu[7];
- mic_header1[8] = mpdu[8];
- mic_header1[9] = mpdu[9];
- mic_header1[10] = mpdu[10]; /* A2 */
- mic_header1[11] = mpdu[11];
- mic_header1[12] = mpdu[12];
- mic_header1[13] = mpdu[13];
- mic_header1[14] = mpdu[14];
- mic_header1[15] = mpdu[15];
-}
-
-/************************************************/
-/* construct_mic_header2() */
-/* Builds the last MIC header block from */
-/* header fields. */
-/************************************************/
-static void construct_mic_header2(u8 *mic_header2, u8 *mpdu, int a4_exists, int qc_exists)
-{
- int i;
-
- for (i = 0; i < 16; i++)
- mic_header2[i] = 0x00;
+ int curfragnum, length;
+ u8 *pframe; /* *payload,*iv */
+ u8 hw_hdr_offset = 0;
+ struct sta_info *stainfo;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
+ struct security_priv *psecuritypriv = &padapter->securitypriv;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ u32 res = _SUCCESS;
+ void *crypto_private;
+ struct sk_buff *skb;
+ struct lib80211_crypto_ops *crypto_ops;
+ const int key_idx = is_multicast_ether_addr(pattrib->ra) ? psecuritypriv->dot118021XGrpKeyid : 0;
+ const int key_length = 16;
+ u8 *key;

- mic_header2[0] = mpdu[16]; /* A3 */
- mic_header2[1] = mpdu[17];
- mic_header2[2] = mpdu[18];
- mic_header2[3] = mpdu[19];
- mic_header2[4] = mpdu[20];
- mic_header2[5] = mpdu[21];
+ if (!pxmitframe->buf_addr)
+ return _FAIL;

- mic_header2[6] = 0x00;
- mic_header2[7] = 0x00; /* mpdu[23]; */
+ hw_hdr_offset = TXDESC_SIZE +
+ (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);

- if (!qc_exists && a4_exists) {
- for (i = 0; i < 6; i++)
- mic_header2[8 + i] = mpdu[24 + i]; /* A4 */
- }
+ pframe = pxmitframe->buf_addr + hw_hdr_offset;

- if (qc_exists && !a4_exists) {
- mic_header2[8] = mpdu[24] & 0x0f; /* mute bits 15 - 4 */
- mic_header2[9] = mpdu[25] & 0x00;
- }
+ /* 4 start to encrypt each fragment */
+ if (pattrib->encrypt != _AES_)
+ return res;

- if (qc_exists && a4_exists) {
- for (i = 0; i < 6; i++)
- mic_header2[8 + i] = mpdu[24 + i]; /* A4 */
+ if (pattrib->psta)
+ stainfo = pattrib->psta;
+ else
+ stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]);

- mic_header2[14] = mpdu[30] & 0x0f;
- mic_header2[15] = mpdu[31] & 0x00;
+ if (!stainfo) {
+ RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("%s: stainfo==NULL!!!\n", __func__));
+ return _FAIL;
}
-}
-
-/************************************************/
-/* construct_mic_header2() */
-/* Builds the last MIC header block from */
-/* header fields. */
-/************************************************/
-static void construct_ctr_preload(u8 *ctr_preload, int a4_exists, int qc_exists, u8 *mpdu, u8 *pn_vector, int c)
-{
- int i;
-
- for (i = 0; i < 16; i++)
- ctr_preload[i] = 0x00;
- i = 0;
-
- ctr_preload[0] = 0x01; /* flag */
- if (qc_exists && a4_exists)
- ctr_preload[1] = mpdu[30] & 0x0f; /* QoC_Control */
- if (qc_exists && !a4_exists)
- ctr_preload[1] = mpdu[24] & 0x0f;
-
- for (i = 2; i < 8; i++)
- ctr_preload[i] = mpdu[i + 8]; /* ctr_preload[2:7] = A2[0:5] = mpdu[10:15] */
- for (i = 8; i < 14; i++)
- ctr_preload[i] = pn_vector[13 - i]; /* ctr_preload[8:13] = PN[5:0] */
- ctr_preload[14] = (unsigned char)(c / 256); /* Ctr */
- ctr_preload[15] = (unsigned char)(c % 256);
-}
-
-/************************************/
-/* bitwise_xor() */
-/* A 128 bit, bitwise exclusive or */
-/************************************/
-static void bitwise_xor(u8 *ina, u8 *inb, u8 *out)
-{
- int i;

- for (i = 0; i < 16; i++)
- out[i] = ina[i] ^ inb[i];
-}
+ crypto_ops = lib80211_get_crypto_ops("CCMP");

-static int aes_cipher(u8 *key, uint hdrlen, u8 *pframe, uint plen)
-{
- uint qc_exists, a4_exists, i, j, payload_remainder,
- num_blocks, payload_index;
-
- u8 pn_vector[6];
- u8 mic_iv[16];
- u8 mic_header1[16];
- u8 mic_header2[16];
- u8 ctr_preload[16];
-
- /* Intermediate Buffers */
- u8 chain_buffer[16];
- u8 aes_out[16];
- u8 padded_buffer[16];
- u8 mic[8];
- uint frtype = GetFrameType(pframe);
- uint frsubtype = GetFrameSubType(pframe);
-
- frsubtype >>= 4;
-
- memset(mic_iv, 0, 16);
- memset(mic_header1, 0, 16);
- memset(mic_header2, 0, 16);
- memset(ctr_preload, 0, 16);
- memset(chain_buffer, 0, 16);
- memset(aes_out, 0, 16);
- memset(padded_buffer, 0, 16);
-
- if ((hdrlen == WLAN_HDR_A3_LEN) || (hdrlen == WLAN_HDR_A3_QOS_LEN))
- a4_exists = 0;
+ if (is_multicast_ether_addr(pattrib->ra))
+ key = psecuritypriv->dot118021XGrpKey[key_idx].skey;
else
- a4_exists = 1;
-
- if ((frtype == WIFI_DATA_CFACK) || (frtype == WIFI_DATA_CFPOLL) || (frtype == WIFI_DATA_CFACKPOLL)) {
- qc_exists = 1;
- if (hdrlen != WLAN_HDR_A3_QOS_LEN)
- hdrlen += 2;
- } else if ((frsubtype == 0x08) || (frsubtype == 0x09) || (frsubtype == 0x0a) || (frsubtype == 0x0b)) {
- if (hdrlen != WLAN_HDR_A3_QOS_LEN)
- hdrlen += 2;
- qc_exists = 1;
- } else {
- qc_exists = 0;
- }
-
- pn_vector[0] = pframe[hdrlen];
- pn_vector[1] = pframe[hdrlen + 1];
- pn_vector[2] = pframe[hdrlen + 4];
- pn_vector[3] = pframe[hdrlen + 5];
- pn_vector[4] = pframe[hdrlen + 6];
- pn_vector[5] = pframe[hdrlen + 7];
-
- construct_mic_iv(mic_iv, qc_exists, a4_exists, pframe, plen, pn_vector);
-
- construct_mic_header1(mic_header1, hdrlen, pframe);
- construct_mic_header2(mic_header2, pframe, a4_exists, qc_exists);
-
- payload_remainder = plen % 16;
- num_blocks = plen / 16;
-
- /* Find start of payload */
- payload_index = hdrlen + 8;
+ key = stainfo->dot118021x_UncstKey.skey;

- /* Calculate MIC */
- aes128k128d(key, mic_iv, aes_out);
- bitwise_xor(aes_out, mic_header1, chain_buffer);
- aes128k128d(key, chain_buffer, aes_out);
- bitwise_xor(aes_out, mic_header2, chain_buffer);
- aes128k128d(key, chain_buffer, aes_out);
-
- for (i = 0; i < num_blocks; i++) {
- bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);/* bitwise_xor(aes_out, &message[payload_index], chain_buffer); */
-
- payload_index += 16;
- aes128k128d(key, chain_buffer, aes_out);
+ if (!crypto_ops) {
+ res = _FAIL;
+ goto exit;
}

- /* Add on the final payload block if it needs padding */
- if (payload_remainder > 0) {
- for (j = 0; j < 16; j++)
- padded_buffer[j] = 0x00;
- for (j = 0; j < payload_remainder; j++)
- padded_buffer[j] = pframe[payload_index++];/* padded_buffer[j] = message[payload_index++]; */
- bitwise_xor(aes_out, padded_buffer, chain_buffer);
- aes128k128d(key, chain_buffer, aes_out);
- }
-
- for (j = 0; j < 8; j++)
- mic[j] = aes_out[j];
-
- /* Insert MIC into payload */
- for (j = 0; j < 8; j++)
- pframe[payload_index + j] = mic[j];
-
- payload_index = hdrlen + 8;
- for (i = 0; i < num_blocks; i++) {
- construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, i + 1);
- aes128k128d(key, ctr_preload, aes_out);
- bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);
- for (j = 0; j < 16; j++)
- pframe[payload_index++] = chain_buffer[j];
+ crypto_private = crypto_ops->init(key_idx);
+ if (!crypto_private) {
+ res = _FAIL;
+ goto exit;
}

- if (payload_remainder > 0) { /* If there is a short final block, then pad it,*/
- /* encrypt it and copy the unpadded part back */
- construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, num_blocks + 1);
-
- for (j = 0; j < 16; j++)
- padded_buffer[j] = 0x00;
- for (j = 0; j < payload_remainder; j++)
- padded_buffer[j] = pframe[payload_index + j];
- aes128k128d(key, ctr_preload, aes_out);
- bitwise_xor(aes_out, padded_buffer, chain_buffer);
- for (j = 0; j < payload_remainder; j++)
- pframe[payload_index++] = chain_buffer[j];
+ if (crypto_ops->set_key(key, key_length, NULL, crypto_private) < 0) {
+ res = _FAIL;
+ goto exit_crypto_ops_deinit;
}
- /* Encrypt the MIC */
- construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, 0);
-
- for (j = 0; j < 16; j++)
- padded_buffer[j] = 0x00;
- for (j = 0; j < 8; j++)
- padded_buffer[j] = pframe[j + hdrlen + 8 + plen];
-
- aes128k128d(key, ctr_preload, aes_out);
- bitwise_xor(aes_out, padded_buffer, chain_buffer);
- for (j = 0; j < 8; j++)
- pframe[payload_index++] = chain_buffer[j];
- return _SUCCESS;
-}
-
-u32 rtw_aes_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
-{ /* exclude ICV */

- /*static*/
-/* unsigned char message[MAX_MSG_SIZE]; */
+ RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("%s: stainfo!= NULL!!!\n", __func__));

- /* Intermediate Buffers */
- int curfragnum, length;
- u8 *pframe, *prwskey; /* *payload,*iv */
- u8 hw_hdr_offset = 0;
- struct sta_info *stainfo;
- struct pkt_attrib *pattrib = &pxmitframe->attrib;
- struct security_priv *psecuritypriv = &padapter->securitypriv;
- struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
-
-/* uint offset = 0; */
- u32 res = _SUCCESS;
-
- if (pxmitframe->buf_addr == NULL)
- return _FAIL;
-
- hw_hdr_offset = TXDESC_SIZE +
- (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
-
- pframe = pxmitframe->buf_addr + hw_hdr_offset;
-
- /* 4 start to encrypt each fragment */
- if (pattrib->encrypt == _AES_) {
- if (pattrib->psta)
- stainfo = pattrib->psta;
+ for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
+ if (curfragnum + 1 == pattrib->nr_frags)
+ length = pattrib->last_txcmdsz;
else
- stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]);
+ length = pxmitpriv->frag_len;

- if (stainfo) {
- RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("%s: stainfo!= NULL!!!\n", __func__));
+ skb = dev_alloc_skb(length);
+ if (!skb) {
+ res = _FAIL;
+ goto exit_crypto_ops_deinit;
+ }

- if (is_multicast_ether_addr(pattrib->ra))
- prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey;
- else
- prwskey = &stainfo->dot118021x_UncstKey.skey[0];
- for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
- if ((curfragnum + 1) == pattrib->nr_frags) { /* 4 the last fragment */
- length = pattrib->last_txcmdsz - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
+ skb_put_data(skb, pframe, length);

- aes_cipher(prwskey, pattrib->hdrlen, pframe, length);
- } else {
- length = pxmitpriv->frag_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
+ memmove(skb->data + pattrib->iv_len, skb->data, pattrib->hdrlen);
+ skb_pull(skb, pattrib->iv_len);
+ skb_trim(skb, skb->len - pattrib->icv_len);

- aes_cipher(prwskey, pattrib->hdrlen, pframe, length);
- pframe += pxmitpriv->frag_len;
- pframe = (u8 *)round_up((size_t)(pframe), 8);
- }
- }
- } else {
- RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("%s: stainfo==NULL!!!\n", __func__));
+ if (crypto_ops->encrypt_mpdu(skb, pattrib->hdrlen, crypto_private)) {
+ kfree_skb(skb);
res = _FAIL;
+ goto exit_crypto_ops_deinit;
}
+
+ memcpy(pframe, skb->data, skb->len);
+
+ pframe += skb->len;
+ pframe = (u8 *)round_up((size_t)(pframe), 8);
+
+ kfree_skb(skb);
}

+exit_crypto_ops_deinit:
+ crypto_ops->deinit(crypto_private);
+
+exit:
return res;
}

@@ -1344,191 +898,3 @@ u32 rtw_aes_decrypt(struct adapter *padapter, struct recv_frame *precvframe)
exit:
return res;
}
-
-/* AES tables*/
-const u32 Te0[256] = {
- 0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU,
- 0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U,
- 0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU,
- 0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU,
- 0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
- 0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU,
- 0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU,
- 0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU,
- 0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU,
- 0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
- 0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U,
- 0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU,
- 0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU,
- 0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U,
- 0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
- 0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU,
- 0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU,
- 0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU,
- 0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU,
- 0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
- 0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU,
- 0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU,
- 0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU,
- 0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU,
- 0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
- 0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U,
- 0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U,
- 0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U,
- 0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU,
- 0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
- 0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U,
- 0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU,
- 0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU,
- 0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U,
- 0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
- 0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U,
- 0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU,
- 0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U,
- 0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU,
- 0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
- 0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU,
- 0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U,
- 0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U,
- 0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU,
- 0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
- 0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U,
- 0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U,
- 0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U,
- 0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U,
- 0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
- 0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U,
- 0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U,
- 0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU,
- 0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U,
- 0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
- 0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U,
- 0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U,
- 0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U,
- 0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U,
- 0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
- 0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U,
- 0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U,
- 0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U,
- 0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU,
-};
-
-const u32 Td0[256] = {
- 0x51f4a750U, 0x7e416553U, 0x1a17a4c3U, 0x3a275e96U,
- 0x3bab6bcbU, 0x1f9d45f1U, 0xacfa58abU, 0x4be30393U,
- 0x2030fa55U, 0xad766df6U, 0x88cc7691U, 0xf5024c25U,
- 0x4fe5d7fcU, 0xc52acbd7U, 0x26354480U, 0xb562a38fU,
- 0xdeb15a49U, 0x25ba1b67U, 0x45ea0e98U, 0x5dfec0e1U,
- 0xc32f7502U, 0x814cf012U, 0x8d4697a3U, 0x6bd3f9c6U,
- 0x038f5fe7U, 0x15929c95U, 0xbf6d7aebU, 0x955259daU,
- 0xd4be832dU, 0x587421d3U, 0x49e06929U, 0x8ec9c844U,
- 0x75c2896aU, 0xf48e7978U, 0x99583e6bU, 0x27b971ddU,
- 0xbee14fb6U, 0xf088ad17U, 0xc920ac66U, 0x7dce3ab4U,
- 0x63df4a18U, 0xe51a3182U, 0x97513360U, 0x62537f45U,
- 0xb16477e0U, 0xbb6bae84U, 0xfe81a01cU, 0xf9082b94U,
- 0x70486858U, 0x8f45fd19U, 0x94de6c87U, 0x527bf8b7U,
- 0xab73d323U, 0x724b02e2U, 0xe31f8f57U, 0x6655ab2aU,
- 0xb2eb2807U, 0x2fb5c203U, 0x86c57b9aU, 0xd33708a5U,
- 0x302887f2U, 0x23bfa5b2U, 0x02036abaU, 0xed16825cU,
- 0x8acf1c2bU, 0xa779b492U, 0xf307f2f0U, 0x4e69e2a1U,
- 0x65daf4cdU, 0x0605bed5U, 0xd134621fU, 0xc4a6fe8aU,
- 0x342e539dU, 0xa2f355a0U, 0x058ae132U, 0xa4f6eb75U,
- 0x0b83ec39U, 0x4060efaaU, 0x5e719f06U, 0xbd6e1051U,
- 0x3e218af9U, 0x96dd063dU, 0xdd3e05aeU, 0x4de6bd46U,
- 0x91548db5U, 0x71c45d05U, 0x0406d46fU, 0x605015ffU,
- 0x1998fb24U, 0xd6bde997U, 0x894043ccU, 0x67d99e77U,
- 0xb0e842bdU, 0x07898b88U, 0xe7195b38U, 0x79c8eedbU,
- 0xa17c0a47U, 0x7c420fe9U, 0xf8841ec9U, 0x00000000U,
- 0x09808683U, 0x322bed48U, 0x1e1170acU, 0x6c5a724eU,
- 0xfd0efffbU, 0x0f853856U, 0x3daed51eU, 0x362d3927U,
- 0x0a0fd964U, 0x685ca621U, 0x9b5b54d1U, 0x24362e3aU,
- 0x0c0a67b1U, 0x9357e70fU, 0xb4ee96d2U, 0x1b9b919eU,
- 0x80c0c54fU, 0x61dc20a2U, 0x5a774b69U, 0x1c121a16U,
- 0xe293ba0aU, 0xc0a02ae5U, 0x3c22e043U, 0x121b171dU,
- 0x0e090d0bU, 0xf28bc7adU, 0x2db6a8b9U, 0x141ea9c8U,
- 0x57f11985U, 0xaf75074cU, 0xee99ddbbU, 0xa37f60fdU,
- 0xf701269fU, 0x5c72f5bcU, 0x44663bc5U, 0x5bfb7e34U,
- 0x8b432976U, 0xcb23c6dcU, 0xb6edfc68U, 0xb8e4f163U,
- 0xd731dccaU, 0x42638510U, 0x13972240U, 0x84c61120U,
- 0x854a247dU, 0xd2bb3df8U, 0xaef93211U, 0xc729a16dU,
- 0x1d9e2f4bU, 0xdcb230f3U, 0x0d8652ecU, 0x77c1e3d0U,
- 0x2bb3166cU, 0xa970b999U, 0x119448faU, 0x47e96422U,
- 0xa8fc8cc4U, 0xa0f03f1aU, 0x567d2cd8U, 0x223390efU,
- 0x87494ec7U, 0xd938d1c1U, 0x8ccaa2feU, 0x98d40b36U,
- 0xa6f581cfU, 0xa57ade28U, 0xdab78e26U, 0x3fadbfa4U,
- 0x2c3a9de4U, 0x5078920dU, 0x6a5fcc9bU, 0x547e4662U,
- 0xf68d13c2U, 0x90d8b8e8U, 0x2e39f75eU, 0x82c3aff5U,
- 0x9f5d80beU, 0x69d0937cU, 0x6fd52da9U, 0xcf2512b3U,
- 0xc8ac993bU, 0x10187da7U, 0xe89c636eU, 0xdb3bbb7bU,
- 0xcd267809U, 0x6e5918f4U, 0xec9ab701U, 0x834f9aa8U,
- 0xe6956e65U, 0xaaffe67eU, 0x21bccf08U, 0xef15e8e6U,
- 0xbae79bd9U, 0x4a6f36ceU, 0xea9f09d4U, 0x29b07cd6U,
- 0x31a4b2afU, 0x2a3f2331U, 0xc6a59430U, 0x35a266c0U,
- 0x744ebc37U, 0xfc82caa6U, 0xe090d0b0U, 0x33a7d815U,
- 0xf104984aU, 0x41ecdaf7U, 0x7fcd500eU, 0x1791f62fU,
- 0x764dd68dU, 0x43efb04dU, 0xccaa4d54U, 0xe49604dfU,
- 0x9ed1b5e3U, 0x4c6a881bU, 0xc12c1fb8U, 0x4665517fU,
- 0x9d5eea04U, 0x018c355dU, 0xfa877473U, 0xfb0b412eU,
- 0xb3671d5aU, 0x92dbd252U, 0xe9105633U, 0x6dd64713U,
- 0x9ad7618cU, 0x37a10c7aU, 0x59f8148eU, 0xeb133c89U,
- 0xcea927eeU, 0xb761c935U, 0xe11ce5edU, 0x7a47b13cU,
- 0x9cd2df59U, 0x55f2733fU, 0x1814ce79U, 0x73c737bfU,
- 0x53f7cdeaU, 0x5ffdaa5bU, 0xdf3d6f14U, 0x7844db86U,
- 0xcaaff381U, 0xb968c43eU, 0x3824342cU, 0xc2a3405fU,
- 0x161dc372U, 0xbce2250cU, 0x283c498bU, 0xff0d9541U,
- 0x39a80171U, 0x080cb3deU, 0xd8b4e49cU, 0x6456c190U,
- 0x7bcb8461U, 0xd532b670U, 0x486c5c74U, 0xd0b85742U,
-};
-
-const u8 Td4s[256] = {
- 0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U,
- 0xbfU, 0x40U, 0xa3U, 0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU,
- 0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU, 0xffU, 0x87U,
- 0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU,
- 0x54U, 0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU,
- 0xeeU, 0x4cU, 0x95U, 0x0bU, 0x42U, 0xfaU, 0xc3U, 0x4eU,
- 0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U, 0xb2U,
- 0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U,
- 0x72U, 0xf8U, 0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U,
- 0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU, 0x65U, 0xb6U, 0x92U,
- 0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU,
- 0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U,
- 0x90U, 0xd8U, 0xabU, 0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU,
- 0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U, 0x45U, 0x06U,
- 0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U,
- 0xc1U, 0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU,
- 0x3aU, 0x91U, 0x11U, 0x41U, 0x4fU, 0x67U, 0xdcU, 0xeaU,
- 0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U, 0x73U,
- 0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U,
- 0xe2U, 0xf9U, 0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU,
- 0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU, 0x29U, 0xc5U, 0x89U,
- 0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU,
- 0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U,
- 0x9aU, 0xdbU, 0xc0U, 0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U,
- 0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U, 0xc7U, 0x31U,
- 0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU,
- 0x60U, 0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU,
- 0x2dU, 0xe5U, 0x7aU, 0x9fU, 0x93U, 0xc9U, 0x9cU, 0xefU,
- 0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U, 0xb0U,
- 0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U,
- 0x17U, 0x2bU, 0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U,
- 0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU,
-};
-
-const u8 rcons[] = {
- 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36
- /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
-};
-
-/**
- * Expand the cipher key into the encryption key schedule.
- *
- * @return the number of rounds for the given cipher key size.
- */
-#define ROUND(i, d, s) \
-do { \
- d##0 = TE0(s##0) ^ TE1(s##1) ^ TE2(s##2) ^ TE3(s##3) ^ rk[4 * i]; \
- d##1 = TE0(s##1) ^ TE1(s##2) ^ TE2(s##3) ^ TE3(s##0) ^ rk[4 * i + 1]; \
- d##2 = TE0(s##2) ^ TE1(s##3) ^ TE2(s##0) ^ TE3(s##1) ^ rk[4 * i + 2]; \
- d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3]; \
-} while (0)
--
2.28.0
\
 
 \ /
  Last update: 2020-09-27 10:41    [W:0.050 / U:2.236 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site