1 /*
2  * This file is part of the Chelsio T6 Crypto driver for Linux.
3  *
4  * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  *
34  */
35 
36 #ifndef __CHCR_ALGO_H__
37 #define __CHCR_ALGO_H__
38 
39 /* Crypto key context */
40 #define KEY_CONTEXT_CTX_LEN_S           24
41 #define KEY_CONTEXT_CTX_LEN_M           0xff
42 #define KEY_CONTEXT_CTX_LEN_V(x)        ((x) << KEY_CONTEXT_CTX_LEN_S)
43 #define KEY_CONTEXT_CTX_LEN_G(x) \
44 	(((x) >> KEY_CONTEXT_CTX_LEN_S) & KEY_CONTEXT_CTX_LEN_M)
45 
46 #define KEY_CONTEXT_DUAL_CK_S      12
47 #define KEY_CONTEXT_DUAL_CK_M      0x1
48 #define KEY_CONTEXT_DUAL_CK_V(x)   ((x) << KEY_CONTEXT_DUAL_CK_S)
49 #define KEY_CONTEXT_DUAL_CK_G(x)   \
50 (((x) >> KEY_CONTEXT_DUAL_CK_S) & KEY_CONTEXT_DUAL_CK_M)
51 #define KEY_CONTEXT_DUAL_CK_F      KEY_CONTEXT_DUAL_CK_V(1U)
52 
53 #define KEY_CONTEXT_SALT_PRESENT_S      10
54 #define KEY_CONTEXT_SALT_PRESENT_M      0x1
55 #define KEY_CONTEXT_SALT_PRESENT_V(x)   ((x) << KEY_CONTEXT_SALT_PRESENT_S)
56 #define KEY_CONTEXT_SALT_PRESENT_G(x)   \
57 	(((x) >> KEY_CONTEXT_SALT_PRESENT_S) & \
58 	 KEY_CONTEXT_SALT_PRESENT_M)
59 #define KEY_CONTEXT_SALT_PRESENT_F      KEY_CONTEXT_SALT_PRESENT_V(1U)
60 
61 #define KEY_CONTEXT_VALID_S     0
62 #define KEY_CONTEXT_VALID_M     0x1
63 #define KEY_CONTEXT_VALID_V(x)  ((x) << KEY_CONTEXT_VALID_S)
64 #define KEY_CONTEXT_VALID_G(x)  \
65 	(((x) >> KEY_CONTEXT_VALID_S) & \
66 	 KEY_CONTEXT_VALID_M)
67 #define KEY_CONTEXT_VALID_F     KEY_CONTEXT_VALID_V(1U)
68 
69 #define KEY_CONTEXT_CK_SIZE_S           6
70 #define KEY_CONTEXT_CK_SIZE_M           0xf
71 #define KEY_CONTEXT_CK_SIZE_V(x)        ((x) << KEY_CONTEXT_CK_SIZE_S)
72 #define KEY_CONTEXT_CK_SIZE_G(x)        \
73 	(((x) >> KEY_CONTEXT_CK_SIZE_S) & KEY_CONTEXT_CK_SIZE_M)
74 
75 #define KEY_CONTEXT_MK_SIZE_S           2
76 #define KEY_CONTEXT_MK_SIZE_M           0xf
77 #define KEY_CONTEXT_MK_SIZE_V(x)        ((x) << KEY_CONTEXT_MK_SIZE_S)
78 #define KEY_CONTEXT_MK_SIZE_G(x)        \
79 	(((x) >> KEY_CONTEXT_MK_SIZE_S) & KEY_CONTEXT_MK_SIZE_M)
80 
81 #define KEY_CONTEXT_OPAD_PRESENT_S      11
82 #define KEY_CONTEXT_OPAD_PRESENT_M      0x1
83 #define KEY_CONTEXT_OPAD_PRESENT_V(x)   ((x) << KEY_CONTEXT_OPAD_PRESENT_S)
84 #define KEY_CONTEXT_OPAD_PRESENT_G(x)   \
85 	(((x) >> KEY_CONTEXT_OPAD_PRESENT_S) & \
86 	 KEY_CONTEXT_OPAD_PRESENT_M)
87 #define KEY_CONTEXT_OPAD_PRESENT_F      KEY_CONTEXT_OPAD_PRESENT_V(1U)
88 
89 #define TLS_KEYCTX_RXFLIT_CNT_S 24
90 #define TLS_KEYCTX_RXFLIT_CNT_V(x) ((x) << TLS_KEYCTX_RXFLIT_CNT_S)
91 
92 #define TLS_KEYCTX_RXPROT_VER_S 20
93 #define TLS_KEYCTX_RXPROT_VER_M 0xf
94 #define TLS_KEYCTX_RXPROT_VER_V(x) ((x) << TLS_KEYCTX_RXPROT_VER_S)
95 
96 #define TLS_KEYCTX_RXCIPH_MODE_S 16
97 #define TLS_KEYCTX_RXCIPH_MODE_M 0xf
98 #define TLS_KEYCTX_RXCIPH_MODE_V(x) ((x) << TLS_KEYCTX_RXCIPH_MODE_S)
99 
100 #define TLS_KEYCTX_RXAUTH_MODE_S 12
101 #define TLS_KEYCTX_RXAUTH_MODE_M 0xf
102 #define TLS_KEYCTX_RXAUTH_MODE_V(x) ((x) << TLS_KEYCTX_RXAUTH_MODE_S)
103 
104 #define TLS_KEYCTX_RXCIAU_CTRL_S 11
105 #define TLS_KEYCTX_RXCIAU_CTRL_V(x) ((x) << TLS_KEYCTX_RXCIAU_CTRL_S)
106 
107 #define TLS_KEYCTX_RX_SEQCTR_S 9
108 #define TLS_KEYCTX_RX_SEQCTR_M 0x3
109 #define TLS_KEYCTX_RX_SEQCTR_V(x) ((x) << TLS_KEYCTX_RX_SEQCTR_S)
110 
111 #define TLS_KEYCTX_RX_VALID_S 8
112 #define TLS_KEYCTX_RX_VALID_V(x) ((x) << TLS_KEYCTX_RX_VALID_S)
113 
114 #define TLS_KEYCTX_RXCK_SIZE_S 3
115 #define TLS_KEYCTX_RXCK_SIZE_M 0x7
116 #define TLS_KEYCTX_RXCK_SIZE_V(x) ((x) << TLS_KEYCTX_RXCK_SIZE_S)
117 
118 #define TLS_KEYCTX_RXMK_SIZE_S 0
119 #define TLS_KEYCTX_RXMK_SIZE_M 0x7
120 #define TLS_KEYCTX_RXMK_SIZE_V(x) ((x) << TLS_KEYCTX_RXMK_SIZE_S)
121 
122 #define CHCR_HASH_MAX_DIGEST_SIZE 64
123 #define CHCR_MAX_SHA_DIGEST_SIZE 64
124 
125 #define IPSEC_TRUNCATED_ICV_SIZE 12
126 #define TLS_TRUNCATED_HMAC_SIZE 10
127 #define CBCMAC_DIGEST_SIZE 16
128 #define MAX_HASH_NAME 20
129 
130 #define SHA1_INIT_STATE_5X4B    5
131 #define SHA256_INIT_STATE_8X4B  8
132 #define SHA512_INIT_STATE_8X8B  8
133 #define SHA1_INIT_STATE         SHA1_INIT_STATE_5X4B
134 #define SHA224_INIT_STATE       SHA256_INIT_STATE_8X4B
135 #define SHA256_INIT_STATE       SHA256_INIT_STATE_8X4B
136 #define SHA384_INIT_STATE       SHA512_INIT_STATE_8X8B
137 #define SHA512_INIT_STATE       SHA512_INIT_STATE_8X8B
138 
139 #define DUMMY_BYTES 16
140 
141 #define IPAD_DATA 0x36363636
142 #define OPAD_DATA 0x5c5c5c5c
143 
144 #define TRANSHDR_SIZE(kctx_len)\
145 	(sizeof(struct chcr_wr) +\
146 	 kctx_len)
147 #define CIPHER_TRANSHDR_SIZE(kctx_len, sge_pairs) \
148 	(TRANSHDR_SIZE((kctx_len)) + (sge_pairs) +\
149 	 sizeof(struct cpl_rx_phys_dsgl) + AES_BLOCK_SIZE)
150 #define HASH_TRANSHDR_SIZE(kctx_len)\
151 	(TRANSHDR_SIZE(kctx_len) + DUMMY_BYTES)
152 
153 
154 #define FILL_SEC_CPL_OP_IVINSR(id, len, ofst)      \
155 	htonl( \
156 	       CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) | \
157 	       CPL_TX_SEC_PDU_RXCHID_V((id)) | \
158 	       CPL_TX_SEC_PDU_ACKFOLLOWS_V(0) | \
159 	       CPL_TX_SEC_PDU_ULPTXLPBK_V(1) | \
160 	       CPL_TX_SEC_PDU_CPLLEN_V((len)) | \
161 	       CPL_TX_SEC_PDU_PLACEHOLDER_V(0) | \
162 	       CPL_TX_SEC_PDU_IVINSRTOFST_V((ofst)))
163 
164 #define  FILL_SEC_CPL_CIPHERSTOP_HI(a_start, a_stop, c_start, c_stop_hi) \
165 	htonl( \
166 	       CPL_TX_SEC_PDU_AADSTART_V((a_start)) | \
167 	       CPL_TX_SEC_PDU_AADSTOP_V((a_stop)) | \
168 	       CPL_TX_SEC_PDU_CIPHERSTART_V((c_start)) | \
169 	       CPL_TX_SEC_PDU_CIPHERSTOP_HI_V((c_stop_hi)))
170 
171 #define  FILL_SEC_CPL_AUTHINSERT(c_stop_lo, a_start, a_stop, a_inst) \
172 	htonl( \
173 	       CPL_TX_SEC_PDU_CIPHERSTOP_LO_V((c_stop_lo)) | \
174 		CPL_TX_SEC_PDU_AUTHSTART_V((a_start)) | \
175 		CPL_TX_SEC_PDU_AUTHSTOP_V((a_stop)) | \
176 		CPL_TX_SEC_PDU_AUTHINSERT_V((a_inst)))
177 
178 #define  FILL_SEC_CPL_SCMD0_SEQNO(ctrl, seq, cmode, amode, opad, size)  \
179 		htonl( \
180 		SCMD_SEQ_NO_CTRL_V(0) | \
181 		SCMD_STATUS_PRESENT_V(0) | \
182 		SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_GENERIC) | \
183 		SCMD_ENC_DEC_CTRL_V((ctrl)) | \
184 		SCMD_CIPH_AUTH_SEQ_CTRL_V((seq)) | \
185 		SCMD_CIPH_MODE_V((cmode)) | \
186 		SCMD_AUTH_MODE_V((amode)) | \
187 		SCMD_HMAC_CTRL_V((opad)) | \
188 		SCMD_IV_SIZE_V((size)) | \
189 		SCMD_NUM_IVS_V(0))
190 
191 #define FILL_SEC_CPL_IVGEN_HDRLEN(last, more, ctx_in, mac, ivdrop, len) htonl( \
192 		SCMD_ENB_DBGID_V(0) | \
193 		SCMD_IV_GEN_CTRL_V(0) | \
194 		SCMD_LAST_FRAG_V((last)) | \
195 		SCMD_MORE_FRAGS_V((more)) | \
196 		SCMD_TLS_COMPPDU_V(0) | \
197 		SCMD_KEY_CTX_INLINE_V((ctx_in)) | \
198 		SCMD_TLS_FRAG_ENABLE_V(0) | \
199 		SCMD_MAC_ONLY_V((mac)) |  \
200 		SCMD_AADIVDROP_V((ivdrop)) | \
201 		SCMD_HDR_LEN_V((len)))
202 
203 #define  FILL_KEY_CTX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \
204 		htonl(KEY_CONTEXT_VALID_V(1) | \
205 		      KEY_CONTEXT_CK_SIZE_V((ck_size)) | \
206 		      KEY_CONTEXT_MK_SIZE_V(mk_size) | \
207 		      KEY_CONTEXT_DUAL_CK_V((d_ck)) | \
208 		      KEY_CONTEXT_OPAD_PRESENT_V((opad)) | \
209 		      KEY_CONTEXT_SALT_PRESENT_V(1) | \
210 		      KEY_CONTEXT_CTX_LEN_V((ctx_len)))
211 
212 #define  FILL_KEY_CRX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \
213 		htonl(TLS_KEYCTX_RXMK_SIZE_V(mk_size) | \
214 		      TLS_KEYCTX_RXCK_SIZE_V(ck_size) | \
215 		      TLS_KEYCTX_RX_VALID_V(1) | \
216 		      TLS_KEYCTX_RX_SEQCTR_V(3) | \
217 		      TLS_KEYCTX_RXAUTH_MODE_V(4) | \
218 		      TLS_KEYCTX_RXCIPH_MODE_V(2) | \
219 		      TLS_KEYCTX_RXFLIT_CNT_V((ctx_len)))
220 
221 #define FILL_WR_OP_CCTX_SIZE \
222 		htonl( \
223 			FW_CRYPTO_LOOKASIDE_WR_OPCODE_V( \
224 			FW_CRYPTO_LOOKASIDE_WR) | \
225 			FW_CRYPTO_LOOKASIDE_WR_COMPL_V(0) | \
226 			FW_CRYPTO_LOOKASIDE_WR_IMM_LEN_V((0)) | \
227 			FW_CRYPTO_LOOKASIDE_WR_CCTX_LOC_V(0) | \
228 			FW_CRYPTO_LOOKASIDE_WR_CCTX_SIZE_V(0))
229 
230 #define FILL_WR_RX_Q_ID(cid, qid, lcb, fid) \
231 		htonl( \
232 			FW_CRYPTO_LOOKASIDE_WR_RX_CHID_V((cid)) | \
233 			FW_CRYPTO_LOOKASIDE_WR_RX_Q_ID_V((qid)) | \
234 			FW_CRYPTO_LOOKASIDE_WR_LCB_V((lcb)) | \
235 			FW_CRYPTO_LOOKASIDE_WR_IV_V((IV_NOP)) | \
236 			FW_CRYPTO_LOOKASIDE_WR_FQIDX_V(fid))
237 
238 #define FILL_ULPTX_CMD_DEST(cid, qid) \
239 	htonl(ULPTX_CMD_V(ULP_TX_PKT) | \
240 	      ULP_TXPKT_DEST_V(0) | \
241 	      ULP_TXPKT_DATAMODIFY_V(0) | \
242 	      ULP_TXPKT_CHANNELID_V((cid)) | \
243 	      ULP_TXPKT_RO_V(1) | \
244 	      ULP_TXPKT_FID_V(qid))
245 
246 #define KEYCTX_ALIGN_PAD(bs) ({unsigned int _bs = (bs);\
247 			      _bs == SHA1_DIGEST_SIZE ? 12 : 0; })
248 
249 #define FILL_PLD_SIZE_HASH_SIZE(payload_sgl_len, sgl_lengths, total_frags) \
250 	htonl(FW_CRYPTO_LOOKASIDE_WR_PLD_SIZE_V(payload_sgl_len ? \
251 						sgl_lengths[total_frags] : 0) |\
252 	      FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(0))
253 
254 #define FILL_LEN_PKD(calc_tx_flits_ofld, skb) \
255 	htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP((\
256 					   calc_tx_flits_ofld(skb) * 8), 16)))
257 
258 #define FILL_CMD_MORE(immdatalen) htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) |\
259 					ULP_TX_SC_MORE_V((immdatalen)))
260 #define MAX_NK 8
261 #define MAX_DSGL_ENT			32
262 #define MIN_AUTH_SG			1 /* IV */
263 #define MIN_GCM_SG			1 /* IV */
264 #define MIN_DIGEST_SG			1 /*Partial Buffer*/
265 #define MIN_CCM_SG			1 /*IV+B0*/
266 #define CIP_SPACE_LEFT(len) \
267 	((SGE_MAX_WR_LEN - CIP_WR_MIN_LEN - (len)))
268 #define HASH_SPACE_LEFT(len) \
269 	((SGE_MAX_WR_LEN - HASH_WR_MIN_LEN - (len)))
270 
271 struct algo_param {
272 	unsigned int auth_mode;
273 	unsigned int mk_size;
274 	unsigned int result_size;
275 };
276 
277 struct hash_wr_param {
278 	struct algo_param alg_prm;
279 	unsigned int opad_needed;
280 	unsigned int more;
281 	unsigned int last;
282 	unsigned int kctx_len;
283 	unsigned int sg_len;
284 	unsigned int bfr_len;
285 	unsigned int hash_size;
286 	u64 scmd1;
287 };
288 
289 struct cipher_wr_param {
290 	struct skcipher_request *req;
291 	char *iv;
292 	int bytes;
293 	unsigned short qid;
294 };
295 enum {
296 	AES_KEYLENGTH_128BIT = 128,
297 	AES_KEYLENGTH_192BIT = 192,
298 	AES_KEYLENGTH_256BIT = 256
299 };
300 
301 enum {
302 	KEYLENGTH_3BYTES = 3,
303 	KEYLENGTH_4BYTES = 4,
304 	KEYLENGTH_6BYTES = 6,
305 	KEYLENGTH_8BYTES = 8
306 };
307 
308 enum {
309 	NUMBER_OF_ROUNDS_10 = 10,
310 	NUMBER_OF_ROUNDS_12 = 12,
311 	NUMBER_OF_ROUNDS_14 = 14,
312 };
313 
314 /*
315  * CCM defines values of 4, 6, 8, 10, 12, 14, and 16 octets,
316  * where they indicate the size of the integrity check value (ICV)
317  */
318 enum {
319 	ICV_4  = 4,
320 	ICV_6  = 6,
321 	ICV_8  = 8,
322 	ICV_10 = 10,
323 	ICV_12 = 12,
324 	ICV_13 = 13,
325 	ICV_14 = 14,
326 	ICV_15 = 15,
327 	ICV_16 = 16
328 };
329 
330 struct phys_sge_pairs {
331 	__be16 len[8];
332 	__be64 addr[8];
333 };
334 
335 
336 static const u32 chcr_sha1_init[SHA1_DIGEST_SIZE / 4] = {
337 		SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4,
338 };
339 
340 static const u32 chcr_sha224_init[SHA256_DIGEST_SIZE / 4] = {
341 		SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3,
342 		SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7,
343 };
344 
345 static const u32 chcr_sha256_init[SHA256_DIGEST_SIZE / 4] = {
346 		SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3,
347 		SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7,
348 };
349 
350 static const u64 chcr_sha384_init[SHA512_DIGEST_SIZE / 8] = {
351 		SHA384_H0, SHA384_H1, SHA384_H2, SHA384_H3,
352 		SHA384_H4, SHA384_H5, SHA384_H6, SHA384_H7,
353 };
354 
355 static const u64 chcr_sha512_init[SHA512_DIGEST_SIZE / 8] = {
356 		SHA512_H0, SHA512_H1, SHA512_H2, SHA512_H3,
357 		SHA512_H4, SHA512_H5, SHA512_H6, SHA512_H7,
358 };
359 
360 static inline void copy_hash_init_values(char *key, int digestsize)
361 {
362 	u8 i;
363 	__be32 *dkey = (__be32 *)key;
364 	u64 *ldkey = (u64 *)key;
365 	__be64 *sha384 = (__be64 *)chcr_sha384_init;
366 	__be64 *sha512 = (__be64 *)chcr_sha512_init;
367 
368 	switch (digestsize) {
369 	case SHA1_DIGEST_SIZE:
370 		for (i = 0; i < SHA1_INIT_STATE; i++)
371 			dkey[i] = cpu_to_be32(chcr_sha1_init[i]);
372 		break;
373 	case SHA224_DIGEST_SIZE:
374 		for (i = 0; i < SHA224_INIT_STATE; i++)
375 			dkey[i] = cpu_to_be32(chcr_sha224_init[i]);
376 		break;
377 	case SHA256_DIGEST_SIZE:
378 		for (i = 0; i < SHA256_INIT_STATE; i++)
379 			dkey[i] = cpu_to_be32(chcr_sha256_init[i]);
380 		break;
381 	case SHA384_DIGEST_SIZE:
382 		for (i = 0; i < SHA384_INIT_STATE; i++)
383 			ldkey[i] = be64_to_cpu(sha384[i]);
384 		break;
385 	case SHA512_DIGEST_SIZE:
386 		for (i = 0; i < SHA512_INIT_STATE; i++)
387 			ldkey[i] = be64_to_cpu(sha512[i]);
388 		break;
389 	}
390 }
391 
392 static const u8 sgl_lengths[20] = {
393 	0, 1, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 10, 10, 11, 12, 13, 13, 14, 15
394 };
395 
396 /* Number of len fields(8) * size of one addr field */
397 #define PHYSDSGL_MAX_LEN_SIZE 16
398 
399 static inline u16 get_space_for_phys_dsgl(unsigned int sgl_entr)
400 {
401 	/* len field size + addr field size */
402 	return ((sgl_entr >> 3) + ((sgl_entr % 8) ?
403 				   1 : 0)) * PHYSDSGL_MAX_LEN_SIZE +
404 		(sgl_entr << 3) + ((sgl_entr % 2 ? 1 : 0) << 3);
405 }
406 
407 /* The AES s-transform matrix (s-box). */
408 static const u8 aes_sbox[256] = {
409 	99,  124, 119, 123, 242, 107, 111, 197, 48,  1,   103, 43,  254, 215,
410 	171, 118, 202, 130, 201, 125, 250, 89,  71,  240, 173, 212, 162, 175,
411 	156, 164, 114, 192, 183, 253, 147, 38,  54,  63,  247, 204, 52,  165,
412 	229, 241, 113, 216, 49,  21, 4,   199, 35,  195, 24,  150, 5, 154, 7,
413 	18,  128, 226, 235, 39,  178, 117, 9,   131, 44,  26,  27,  110, 90,
414 	160, 82,  59,  214, 179, 41,  227, 47,  132, 83,  209, 0,   237, 32,
415 	252, 177, 91,  106, 203, 190, 57,  74,  76,  88,  207, 208, 239, 170,
416 	251, 67,  77,  51,  133, 69,  249, 2,   127, 80,  60,  159, 168, 81,
417 	163, 64,  143, 146, 157, 56,  245, 188, 182, 218, 33,  16,  255, 243,
418 	210, 205, 12,  19,  236, 95,  151, 68,  23,  196, 167, 126, 61,  100,
419 	93,  25,  115, 96,  129, 79,  220, 34,  42,  144, 136, 70,  238, 184,
420 	20,  222, 94,  11,  219, 224, 50,  58,  10,  73,  6,   36,  92,  194,
421 	211, 172, 98,  145, 149, 228, 121, 231, 200, 55,  109, 141, 213, 78,
422 	169, 108, 86,  244, 234, 101, 122, 174, 8, 186, 120, 37,  46,  28, 166,
423 	180, 198, 232, 221, 116, 31,  75,  189, 139, 138, 112, 62,  181, 102,
424 	72,  3,   246, 14,  97,  53,  87,  185, 134, 193, 29,  158, 225, 248,
425 	152, 17,  105, 217, 142, 148, 155, 30,  135, 233, 206, 85,  40,  223,
426 	140, 161, 137, 13,  191, 230, 66,  104, 65,  153, 45,  15,  176, 84,
427 	187, 22
428 };
429 
430 static inline u32 aes_ks_subword(const u32 w)
431 {
432 	u8 bytes[4];
433 
434 	*(u32 *)(&bytes[0]) = w;
435 	bytes[0] = aes_sbox[bytes[0]];
436 	bytes[1] = aes_sbox[bytes[1]];
437 	bytes[2] = aes_sbox[bytes[2]];
438 	bytes[3] = aes_sbox[bytes[3]];
439 	return *(u32 *)(&bytes[0]);
440 }
441 
442 #endif /* __CHCR_ALGO_H__ */
443