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[openwrt.git] / target / linux / generic-2.6 / files / crypto / ocf / ep80579 / icp_asym.c
1 /***************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2007,2008 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
22 * The full GNU General Public License is included in this distribution
23 * in the file called LICENSE.GPL.
24 *
25 * Contact Information:
26 * Intel Corporation
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2007,2008 Intel Corporation. All rights reserved.
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 *
37 * * Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * * Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in
41 * the documentation and/or other materials provided with the
42 * distribution.
43 * * Neither the name of Intel Corporation nor the names of its
44 * contributors may be used to endorse or promote products derived
45 * from this software without specific prior written permission.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
50 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
51 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 *
59 *
60 * version: Security.L.1.0.130
61 *
62 ***************************************************************************/
63
64 #include "icp_ocf.h"
65
66 /*The following define values (containing the word 'INDEX') are used to find
67 the index of each input buffer of the crypto_kop struct (see OCF cryptodev.h).
68 These values were found through analysis of the OCF OpenSSL patch. If the
69 calling program uses different input buffer positions, these defines will have
70 to be changed.*/
71
72 /*DIFFIE HELLMAN buffer index values*/
73 #define ICP_DH_KRP_PARAM_PRIME_INDEX (0)
74 #define ICP_DH_KRP_PARAM_BASE_INDEX (1)
75 #define ICP_DH_KRP_PARAM_PRIVATE_VALUE_INDEX (2)
76 #define ICP_DH_KRP_PARAM_RESULT_INDEX (3)
77
78 /*MOD EXP buffer index values*/
79 #define ICP_MOD_EXP_KRP_PARAM_BASE_INDEX (0)
80 #define ICP_MOD_EXP_KRP_PARAM_EXPONENT_INDEX (1)
81 #define ICP_MOD_EXP_KRP_PARAM_MODULUS_INDEX (2)
82 #define ICP_MOD_EXP_KRP_PARAM_RESULT_INDEX (3)
83
84 #define SINGLE_BYTE_VALUE (4)
85
86 /*MOD EXP CRT buffer index values*/
87 #define ICP_MOD_EXP_CRT_KRP_PARAM_PRIME_P_INDEX (0)
88 #define ICP_MOD_EXP_CRT_KRP_PARAM_PRIME_Q_INDEX (1)
89 #define ICP_MOD_EXP_CRT_KRP_PARAM_I_INDEX (2)
90 #define ICP_MOD_EXP_CRT_KRP_PARAM_EXPONENT_DP_INDEX (3)
91 #define ICP_MOD_EXP_CRT_KRP_PARAM_EXPONENT_DQ_INDEX (4)
92 #define ICP_MOD_EXP_CRT_KRP_PARAM_COEFF_QINV_INDEX (5)
93 #define ICP_MOD_EXP_CRT_KRP_PARAM_RESULT_INDEX (6)
94
95 /*DSA sign buffer index values*/
96 #define ICP_DSA_SIGN_KRP_PARAM_DGST_INDEX (0)
97 #define ICP_DSA_SIGN_KRP_PARAM_PRIME_P_INDEX (1)
98 #define ICP_DSA_SIGN_KRP_PARAM_PRIME_Q_INDEX (2)
99 #define ICP_DSA_SIGN_KRP_PARAM_G_INDEX (3)
100 #define ICP_DSA_SIGN_KRP_PARAM_X_INDEX (4)
101 #define ICP_DSA_SIGN_KRP_PARAM_R_RESULT_INDEX (5)
102 #define ICP_DSA_SIGN_KRP_PARAM_S_RESULT_INDEX (6)
103
104 /*DSA verify buffer index values*/
105 #define ICP_DSA_VERIFY_KRP_PARAM_DGST_INDEX (0)
106 #define ICP_DSA_VERIFY_KRP_PARAM_PRIME_P_INDEX (1)
107 #define ICP_DSA_VERIFY_KRP_PARAM_PRIME_Q_INDEX (2)
108 #define ICP_DSA_VERIFY_KRP_PARAM_G_INDEX (3)
109 #define ICP_DSA_VERIFY_KRP_PARAM_PUBKEY_INDEX (4)
110 #define ICP_DSA_VERIFY_KRP_PARAM_SIG_R_INDEX (5)
111 #define ICP_DSA_VERIFY_KRP_PARAM_SIG_S_INDEX (6)
112
113 /*DSA sign prime Q vs random number K size check values*/
114 #define DONT_RUN_LESS_THAN_CHECK (0)
115 #define FAIL_A_IS_GREATER_THAN_B (1)
116 #define FAIL_A_IS_EQUAL_TO_B (1)
117 #define SUCCESS_A_IS_LESS_THAN_B (0)
118 #define DSA_SIGN_RAND_GEN_VAL_CHECK_MAX_ITERATIONS (500)
119
120 /* We need to set a cryptokp success value just in case it is set or allocated
121 and not set to zero outside of this module */
122 #define CRYPTO_OP_SUCCESS (0)
123
124 static int icp_ocfDrvDHComputeKey(struct cryptkop *krp);
125
126 static int icp_ocfDrvModExp(struct cryptkop *krp);
127
128 static int icp_ocfDrvModExpCRT(struct cryptkop *krp);
129
130 static int
131 icp_ocfDrvCheckALessThanB(CpaFlatBuffer * pK, CpaFlatBuffer * pQ, int *doCheck);
132
133 static int icp_ocfDrvDsaSign(struct cryptkop *krp);
134
135 static int icp_ocfDrvDsaVerify(struct cryptkop *krp);
136
137 static void
138 icp_ocfDrvDhP1CallBack(void *callbackTag,
139 CpaStatus status,
140 void *pOpData, CpaFlatBuffer * pLocalOctetStringPV);
141
142 static void
143 icp_ocfDrvModExpCallBack(void *callbackTag,
144 CpaStatus status,
145 void *pOpData, CpaFlatBuffer * pResult);
146
147 static void
148 icp_ocfDrvModExpCRTCallBack(void *callbackTag,
149 CpaStatus status,
150 void *pOpData, CpaFlatBuffer * pOutputData);
151
152 static void
153 icp_ocfDrvDsaVerifyCallBack(void *callbackTag,
154 CpaStatus status,
155 void *pOpData, CpaBoolean verifyStatus);
156
157 static void
158 icp_ocfDrvDsaRSSignCallBack(void *callbackTag,
159 CpaStatus status,
160 void *pOpData,
161 CpaBoolean protocolStatus,
162 CpaFlatBuffer * pR, CpaFlatBuffer * pS);
163
164 /* Name : icp_ocfDrvPkeProcess
165 *
166 * Description : This function will choose which PKE process to follow
167 * based on the input arguments
168 */
169 int icp_ocfDrvPkeProcess(device_t dev, struct cryptkop *krp, int hint)
170 {
171 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
172
173 if (NULL == krp) {
174 DPRINTK("%s(): Invalid input parameters, cryptkop = %p\n",
175 __FUNCTION__, krp);
176 return EINVAL;
177 }
178
179 if (CPA_TRUE == atomic_read(&icp_ocfDrvIsExiting)) {
180 krp->krp_status = ECANCELED;
181 return ECANCELED;
182 }
183
184 switch (krp->krp_op) {
185 case CRK_DH_COMPUTE_KEY:
186 DPRINTK("%s() doing DH_COMPUTE_KEY\n", __FUNCTION__);
187 lacStatus = icp_ocfDrvDHComputeKey(krp);
188 if (CPA_STATUS_SUCCESS != lacStatus) {
189 EPRINTK("%s(): icp_ocfDrvDHComputeKey failed "
190 "(%d).\n", __FUNCTION__, lacStatus);
191 krp->krp_status = ECANCELED;
192 return ECANCELED;
193 }
194
195 break;
196
197 case CRK_MOD_EXP:
198 DPRINTK("%s() doing MOD_EXP \n", __FUNCTION__);
199 lacStatus = icp_ocfDrvModExp(krp);
200 if (CPA_STATUS_SUCCESS != lacStatus) {
201 EPRINTK("%s(): icp_ocfDrvModExp failed (%d).\n",
202 __FUNCTION__, lacStatus);
203 krp->krp_status = ECANCELED;
204 return ECANCELED;
205 }
206
207 break;
208
209 case CRK_MOD_EXP_CRT:
210 DPRINTK("%s() doing MOD_EXP_CRT \n", __FUNCTION__);
211 lacStatus = icp_ocfDrvModExpCRT(krp);
212 if (CPA_STATUS_SUCCESS != lacStatus) {
213 EPRINTK("%s(): icp_ocfDrvModExpCRT "
214 "failed (%d).\n", __FUNCTION__, lacStatus);
215 krp->krp_status = ECANCELED;
216 return ECANCELED;
217 }
218
219 break;
220
221 case CRK_DSA_SIGN:
222 DPRINTK("%s() doing DSA_SIGN \n", __FUNCTION__);
223 lacStatus = icp_ocfDrvDsaSign(krp);
224 if (CPA_STATUS_SUCCESS != lacStatus) {
225 EPRINTK("%s(): icp_ocfDrvDsaSign "
226 "failed (%d).\n", __FUNCTION__, lacStatus);
227 krp->krp_status = ECANCELED;
228 return ECANCELED;
229 }
230
231 break;
232
233 case CRK_DSA_VERIFY:
234 DPRINTK("%s() doing DSA_VERIFY \n", __FUNCTION__);
235 lacStatus = icp_ocfDrvDsaVerify(krp);
236 if (CPA_STATUS_SUCCESS != lacStatus) {
237 EPRINTK("%s(): icp_ocfDrvDsaVerify "
238 "failed (%d).\n", __FUNCTION__, lacStatus);
239 krp->krp_status = ECANCELED;
240 return ECANCELED;
241 }
242
243 break;
244
245 default:
246 EPRINTK("%s(): Asymettric function not "
247 "supported (%d).\n", __FUNCTION__, krp->krp_op);
248 krp->krp_status = EOPNOTSUPP;
249 return EOPNOTSUPP;
250 }
251
252 return ICP_OCF_DRV_STATUS_SUCCESS;
253 }
254
255 /* Name : icp_ocfDrvSwapBytes
256 *
257 * Description : This function is used to swap the byte order of a buffer.
258 * It has been seen that in general we are passed little endian byte order
259 * buffers, but LAC only accepts big endian byte order buffers.
260 */
261 static void inline
262 icp_ocfDrvSwapBytes(u_int8_t * num, u_int32_t buff_len_bytes)
263 {
264
265 int i;
266 u_int8_t *end_ptr;
267 u_int8_t hold_val;
268
269 end_ptr = num + (buff_len_bytes - 1);
270 buff_len_bytes = buff_len_bytes >> 1;
271 for (i = 0; i < buff_len_bytes; i++) {
272 hold_val = *num;
273 *num = *end_ptr;
274 num++;
275 *end_ptr = hold_val;
276 end_ptr--;
277 }
278 }
279
280 /* Name : icp_ocfDrvDHComputeKey
281 *
282 * Description : This function will map Diffie Hellman calls from OCF
283 * to the LAC API. OCF uses this function for Diffie Hellman Phase1 and
284 * Phase2. LAC has a separate Diffie Hellman Phase2 call, however both phases
285 * break down to a modular exponentiation.
286 */
287 static int icp_ocfDrvDHComputeKey(struct cryptkop *krp)
288 {
289 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
290 void *callbackTag = NULL;
291 CpaCyDhPhase1KeyGenOpData *pPhase1OpData = NULL;
292 CpaFlatBuffer *pLocalOctetStringPV = NULL;
293 uint32_t dh_prime_len_bytes = 0, dh_prime_len_bits = 0;
294
295 /* Input checks - check prime is a multiple of 8 bits to allow for
296 allocation later */
297 dh_prime_len_bits =
298 (krp->krp_param[ICP_DH_KRP_PARAM_PRIME_INDEX].crp_nbits);
299
300 /* LAC can reject prime lengths based on prime key sizes, we just
301 need to make sure we can allocate space for the base and
302 exponent buffers correctly */
303 if ((dh_prime_len_bits % NUM_BITS_IN_BYTE) != 0) {
304 APRINTK("%s(): Warning Prime number buffer size is not a "
305 "multiple of 8 bits\n", __FUNCTION__);
306 }
307
308 /* Result storage space should be the same size as the prime as this
309 value can take up the same amount of storage space */
310 if (dh_prime_len_bits !=
311 krp->krp_param[ICP_DH_KRP_PARAM_RESULT_INDEX].crp_nbits) {
312 DPRINTK("%s(): Return Buffer must be the same size "
313 "as the Prime buffer\n", __FUNCTION__);
314 krp->krp_status = EINVAL;
315 return EINVAL;
316 }
317 /* Switch to size in bytes */
318 BITS_TO_BYTES(dh_prime_len_bytes, dh_prime_len_bits);
319
320 callbackTag = krp;
321
322 pPhase1OpData = kmem_cache_zalloc(drvDH_zone, GFP_KERNEL);
323 if (NULL == pPhase1OpData) {
324 APRINTK("%s():Failed to get memory for key gen data\n",
325 __FUNCTION__);
326 krp->krp_status = ENOMEM;
327 return ENOMEM;
328 }
329
330 pLocalOctetStringPV = kmem_cache_zalloc(drvFlatBuffer_zone, GFP_KERNEL);
331 if (NULL == pLocalOctetStringPV) {
332 APRINTK("%s():Failed to get memory for pLocalOctetStringPV\n",
333 __FUNCTION__);
334 kmem_cache_free(drvDH_zone, pPhase1OpData);
335 krp->krp_status = ENOMEM;
336 return ENOMEM;
337 }
338
339 /* Link parameters */
340 pPhase1OpData->primeP.pData =
341 krp->krp_param[ICP_DH_KRP_PARAM_PRIME_INDEX].crp_p;
342
343 pPhase1OpData->primeP.dataLenInBytes = dh_prime_len_bytes;
344
345 icp_ocfDrvSwapBytes(pPhase1OpData->primeP.pData, dh_prime_len_bytes);
346
347 pPhase1OpData->baseG.pData =
348 krp->krp_param[ICP_DH_KRP_PARAM_BASE_INDEX].crp_p;
349
350 BITS_TO_BYTES(pPhase1OpData->baseG.dataLenInBytes,
351 krp->krp_param[ICP_DH_KRP_PARAM_BASE_INDEX].crp_nbits);
352
353 icp_ocfDrvSwapBytes(pPhase1OpData->baseG.pData,
354 pPhase1OpData->baseG.dataLenInBytes);
355
356 pPhase1OpData->privateValueX.pData =
357 krp->krp_param[ICP_DH_KRP_PARAM_PRIVATE_VALUE_INDEX].crp_p;
358
359 BITS_TO_BYTES(pPhase1OpData->privateValueX.dataLenInBytes,
360 krp->krp_param[ICP_DH_KRP_PARAM_PRIVATE_VALUE_INDEX].
361 crp_nbits);
362
363 icp_ocfDrvSwapBytes(pPhase1OpData->privateValueX.pData,
364 pPhase1OpData->privateValueX.dataLenInBytes);
365
366 /* Output parameters */
367 pLocalOctetStringPV->pData =
368 krp->krp_param[ICP_DH_KRP_PARAM_RESULT_INDEX].crp_p;
369
370 BITS_TO_BYTES(pLocalOctetStringPV->dataLenInBytes,
371 krp->krp_param[ICP_DH_KRP_PARAM_RESULT_INDEX].crp_nbits);
372
373 lacStatus = cpaCyDhKeyGenPhase1(CPA_INSTANCE_HANDLE_SINGLE,
374 icp_ocfDrvDhP1CallBack,
375 callbackTag, pPhase1OpData,
376 pLocalOctetStringPV);
377
378 if (CPA_STATUS_SUCCESS != lacStatus) {
379 EPRINTK("%s(): DH Phase 1 Key Gen failed (%d).\n",
380 __FUNCTION__, lacStatus);
381 icp_ocfDrvFreeFlatBuffer(pLocalOctetStringPV);
382 kmem_cache_free(drvDH_zone, pPhase1OpData);
383 }
384
385 return lacStatus;
386 }
387
388 /* Name : icp_ocfDrvModExp
389 *
390 * Description : This function will map ordinary Modular Exponentiation calls
391 * from OCF to the LAC API.
392 *
393 */
394 static int icp_ocfDrvModExp(struct cryptkop *krp)
395 {
396 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
397 void *callbackTag = NULL;
398 CpaCyLnModExpOpData *pModExpOpData = NULL;
399 CpaFlatBuffer *pResult = NULL;
400
401 if ((krp->krp_param[ICP_MOD_EXP_KRP_PARAM_MODULUS_INDEX].crp_nbits %
402 NUM_BITS_IN_BYTE) != 0) {
403 DPRINTK("%s(): Warning - modulus buffer size (%d) is not a "
404 "multiple of 8 bits\n", __FUNCTION__,
405 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_MODULUS_INDEX].
406 crp_nbits);
407 }
408
409 /* Result storage space should be the same size as the prime as this
410 value can take up the same amount of storage space */
411 if (krp->krp_param[ICP_MOD_EXP_KRP_PARAM_MODULUS_INDEX].crp_nbits >
412 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_RESULT_INDEX].crp_nbits) {
413 APRINTK("%s(): Return Buffer size must be the same or"
414 " greater than the Modulus buffer\n", __FUNCTION__);
415 krp->krp_status = EINVAL;
416 return EINVAL;
417 }
418
419 callbackTag = krp;
420
421 pModExpOpData = kmem_cache_zalloc(drvLnModExp_zone, GFP_KERNEL);
422 if (NULL == pModExpOpData) {
423 APRINTK("%s():Failed to get memory for key gen data\n",
424 __FUNCTION__);
425 krp->krp_status = ENOMEM;
426 return ENOMEM;
427 }
428
429 pResult = kmem_cache_zalloc(drvFlatBuffer_zone, GFP_KERNEL);
430 if (NULL == pResult) {
431 APRINTK("%s():Failed to get memory for ModExp result\n",
432 __FUNCTION__);
433 kmem_cache_free(drvLnModExp_zone, pModExpOpData);
434 krp->krp_status = ENOMEM;
435 return ENOMEM;
436 }
437
438 /* Link parameters */
439 pModExpOpData->modulus.pData =
440 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_MODULUS_INDEX].crp_p;
441 BITS_TO_BYTES(pModExpOpData->modulus.dataLenInBytes,
442 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_MODULUS_INDEX].
443 crp_nbits);
444
445 icp_ocfDrvSwapBytes(pModExpOpData->modulus.pData,
446 pModExpOpData->modulus.dataLenInBytes);
447
448 /*OCF patch to Openswan Pluto regularly sends the base value as 2
449 bits in size. In this case, it has been found it is better to
450 use the base size memory space as the input buffer (if the number
451 is in bits is less than a byte, the number of bits is the input
452 value) */
453 if (krp->krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].crp_nbits <
454 NUM_BITS_IN_BYTE) {
455 DPRINTK("%s : base is small (%d)\n", __FUNCTION__, krp->
456 krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].crp_nbits);
457 pModExpOpData->base.dataLenInBytes = SINGLE_BYTE_VALUE;
458 pModExpOpData->base.pData =
459 (uint8_t *) & (krp->
460 krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].
461 crp_nbits);
462 *((uint32_t *) pModExpOpData->base.pData) =
463 htonl(*((uint32_t *) pModExpOpData->base.pData));
464
465 } else {
466
467 DPRINTK("%s : base is big (%d)\n", __FUNCTION__, krp->
468 krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].crp_nbits);
469 pModExpOpData->base.pData =
470 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].crp_p;
471 BITS_TO_BYTES(pModExpOpData->base.dataLenInBytes,
472 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].
473 crp_nbits);
474 icp_ocfDrvSwapBytes(pModExpOpData->base.pData,
475 pModExpOpData->base.dataLenInBytes);
476 }
477
478 pModExpOpData->exponent.pData =
479 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_EXPONENT_INDEX].crp_p;
480 BITS_TO_BYTES(pModExpOpData->exponent.dataLenInBytes,
481 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_EXPONENT_INDEX].
482 crp_nbits);
483
484 icp_ocfDrvSwapBytes(pModExpOpData->exponent.pData,
485 pModExpOpData->exponent.dataLenInBytes);
486 /* Output parameters */
487 pResult->pData =
488 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_RESULT_INDEX].crp_p,
489 BITS_TO_BYTES(pResult->dataLenInBytes,
490 krp->krp_param[ICP_MOD_EXP_KRP_PARAM_RESULT_INDEX].
491 crp_nbits);
492
493 lacStatus = cpaCyLnModExp(CPA_INSTANCE_HANDLE_SINGLE,
494 icp_ocfDrvModExpCallBack,
495 callbackTag, pModExpOpData, pResult);
496
497 if (CPA_STATUS_SUCCESS != lacStatus) {
498 EPRINTK("%s(): Mod Exp Operation failed (%d).\n",
499 __FUNCTION__, lacStatus);
500 krp->krp_status = ECANCELED;
501 icp_ocfDrvFreeFlatBuffer(pResult);
502 kmem_cache_free(drvLnModExp_zone, pModExpOpData);
503 }
504
505 return lacStatus;
506 }
507
508 /* Name : icp_ocfDrvModExpCRT
509 *
510 * Description : This function will map ordinary Modular Exponentiation Chinese
511 * Remainder Theorem implementaion calls from OCF to the LAC API.
512 *
513 * Note : Mod Exp CRT for this driver is accelerated through LAC RSA type 2
514 * decrypt operation. Therefore P and Q input values must always be prime
515 * numbers. Although basic primality checks are done in LAC, it is up to the
516 * user to do any correct prime number checking before passing the inputs.
517 */
518
519 static int icp_ocfDrvModExpCRT(struct cryptkop *krp)
520 {
521 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
522 CpaCyRsaDecryptOpData *rsaDecryptOpData = NULL;
523 void *callbackTag = NULL;
524 CpaFlatBuffer *pOutputData = NULL;
525
526 /*Parameter input checks are all done by LAC, no need to repeat
527 them here. */
528 callbackTag = krp;
529
530 rsaDecryptOpData = kmem_cache_zalloc(drvRSADecrypt_zone, GFP_KERNEL);
531 if (NULL == rsaDecryptOpData) {
532 APRINTK("%s():Failed to get memory"
533 " for MOD EXP CRT Op data struct\n", __FUNCTION__);
534 krp->krp_status = ENOMEM;
535 return ENOMEM;
536 }
537
538 rsaDecryptOpData->pRecipientPrivateKey
539 = kmem_cache_zalloc(drvRSAPrivateKey_zone, GFP_KERNEL);
540 if (NULL == rsaDecryptOpData->pRecipientPrivateKey) {
541 APRINTK("%s():Failed to get memory for MOD EXP CRT"
542 " private key values struct\n", __FUNCTION__);
543 kmem_cache_free(drvRSADecrypt_zone, rsaDecryptOpData);
544 krp->krp_status = ENOMEM;
545 return ENOMEM;
546 }
547
548 rsaDecryptOpData->pRecipientPrivateKey->
549 version = CPA_CY_RSA_VERSION_TWO_PRIME;
550 rsaDecryptOpData->pRecipientPrivateKey->
551 privateKeyRepType = CPA_CY_RSA_PRIVATE_KEY_REP_TYPE_2;
552
553 pOutputData = kmem_cache_zalloc(drvFlatBuffer_zone, GFP_KERNEL);
554 if (NULL == pOutputData) {
555 APRINTK("%s():Failed to get memory"
556 " for MOD EXP CRT output data\n", __FUNCTION__);
557 kmem_cache_free(drvRSAPrivateKey_zone,
558 rsaDecryptOpData->pRecipientPrivateKey);
559 kmem_cache_free(drvRSADecrypt_zone, rsaDecryptOpData);
560 krp->krp_status = ENOMEM;
561 return ENOMEM;
562 }
563
564 rsaDecryptOpData->pRecipientPrivateKey->
565 version = CPA_CY_RSA_VERSION_TWO_PRIME;
566 rsaDecryptOpData->pRecipientPrivateKey->
567 privateKeyRepType = CPA_CY_RSA_PRIVATE_KEY_REP_TYPE_2;
568
569 /* Link parameters */
570 rsaDecryptOpData->inputData.pData =
571 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_I_INDEX].crp_p;
572 BITS_TO_BYTES(rsaDecryptOpData->inputData.dataLenInBytes,
573 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_I_INDEX].
574 crp_nbits);
575
576 icp_ocfDrvSwapBytes(rsaDecryptOpData->inputData.pData,
577 rsaDecryptOpData->inputData.dataLenInBytes);
578
579 rsaDecryptOpData->pRecipientPrivateKey->privateKeyRep2.prime1P.pData =
580 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_PRIME_P_INDEX].crp_p;
581 BITS_TO_BYTES(rsaDecryptOpData->pRecipientPrivateKey->privateKeyRep2.
582 prime1P.dataLenInBytes,
583 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_PRIME_P_INDEX].
584 crp_nbits);
585
586 icp_ocfDrvSwapBytes(rsaDecryptOpData->pRecipientPrivateKey->
587 privateKeyRep2.prime1P.pData,
588 rsaDecryptOpData->pRecipientPrivateKey->
589 privateKeyRep2.prime1P.dataLenInBytes);
590
591 rsaDecryptOpData->pRecipientPrivateKey->privateKeyRep2.prime2Q.pData =
592 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_PRIME_Q_INDEX].crp_p;
593 BITS_TO_BYTES(rsaDecryptOpData->pRecipientPrivateKey->privateKeyRep2.
594 prime2Q.dataLenInBytes,
595 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_PRIME_Q_INDEX].
596 crp_nbits);
597
598 icp_ocfDrvSwapBytes(rsaDecryptOpData->pRecipientPrivateKey->
599 privateKeyRep2.prime2Q.pData,
600 rsaDecryptOpData->pRecipientPrivateKey->
601 privateKeyRep2.prime2Q.dataLenInBytes);
602
603 rsaDecryptOpData->pRecipientPrivateKey->
604 privateKeyRep2.exponent1Dp.pData =
605 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_EXPONENT_DP_INDEX].crp_p;
606 BITS_TO_BYTES(rsaDecryptOpData->pRecipientPrivateKey->privateKeyRep2.
607 exponent1Dp.dataLenInBytes,
608 krp->
609 krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_EXPONENT_DP_INDEX].
610 crp_nbits);
611
612 icp_ocfDrvSwapBytes(rsaDecryptOpData->pRecipientPrivateKey->
613 privateKeyRep2.exponent1Dp.pData,
614 rsaDecryptOpData->pRecipientPrivateKey->
615 privateKeyRep2.exponent1Dp.dataLenInBytes);
616
617 rsaDecryptOpData->pRecipientPrivateKey->
618 privateKeyRep2.exponent2Dq.pData =
619 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_EXPONENT_DQ_INDEX].crp_p;
620 BITS_TO_BYTES(rsaDecryptOpData->pRecipientPrivateKey->
621 privateKeyRep2.exponent2Dq.dataLenInBytes,
622 krp->
623 krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_EXPONENT_DQ_INDEX].
624 crp_nbits);
625
626 icp_ocfDrvSwapBytes(rsaDecryptOpData->pRecipientPrivateKey->
627 privateKeyRep2.exponent2Dq.pData,
628 rsaDecryptOpData->pRecipientPrivateKey->
629 privateKeyRep2.exponent2Dq.dataLenInBytes);
630
631 rsaDecryptOpData->pRecipientPrivateKey->
632 privateKeyRep2.coefficientQInv.pData =
633 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_COEFF_QINV_INDEX].crp_p;
634 BITS_TO_BYTES(rsaDecryptOpData->pRecipientPrivateKey->
635 privateKeyRep2.coefficientQInv.dataLenInBytes,
636 krp->
637 krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_COEFF_QINV_INDEX].
638 crp_nbits);
639
640 icp_ocfDrvSwapBytes(rsaDecryptOpData->pRecipientPrivateKey->
641 privateKeyRep2.coefficientQInv.pData,
642 rsaDecryptOpData->pRecipientPrivateKey->
643 privateKeyRep2.coefficientQInv.dataLenInBytes);
644
645 /* Output Parameter */
646 pOutputData->pData =
647 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_RESULT_INDEX].crp_p;
648 BITS_TO_BYTES(pOutputData->dataLenInBytes,
649 krp->krp_param[ICP_MOD_EXP_CRT_KRP_PARAM_RESULT_INDEX].
650 crp_nbits);
651
652 lacStatus = cpaCyRsaDecrypt(CPA_INSTANCE_HANDLE_SINGLE,
653 icp_ocfDrvModExpCRTCallBack,
654 callbackTag, rsaDecryptOpData, pOutputData);
655
656 if (CPA_STATUS_SUCCESS != lacStatus) {
657 EPRINTK("%s(): Mod Exp CRT Operation failed (%d).\n",
658 __FUNCTION__, lacStatus);
659 krp->krp_status = ECANCELED;
660 icp_ocfDrvFreeFlatBuffer(pOutputData);
661 kmem_cache_free(drvRSAPrivateKey_zone,
662 rsaDecryptOpData->pRecipientPrivateKey);
663 kmem_cache_free(drvRSADecrypt_zone, rsaDecryptOpData);
664 }
665
666 return lacStatus;
667 }
668
669 /* Name : icp_ocfDrvCheckALessThanB
670 *
671 * Description : This function will check whether the first argument is less
672 * than the second. It is used to check whether the DSA RS sign Random K
673 * value is less than the Prime Q value (as defined in the specification)
674 *
675 */
676 static int
677 icp_ocfDrvCheckALessThanB(CpaFlatBuffer * pK, CpaFlatBuffer * pQ, int *doCheck)
678 {
679
680 uint8_t *MSB_K = pK->pData;
681 uint8_t *MSB_Q = pQ->pData;
682 uint32_t buffer_lengths_in_bytes = pQ->dataLenInBytes;
683
684 if (DONT_RUN_LESS_THAN_CHECK == *doCheck) {
685 return FAIL_A_IS_GREATER_THAN_B;
686 }
687
688 /*Check MSBs
689 if A == B, check next MSB
690 if A > B, return A_IS_GREATER_THAN_B
691 if A < B, return A_IS_LESS_THAN_B (success)
692 */
693 while (*MSB_K == *MSB_Q) {
694 MSB_K++;
695 MSB_Q++;
696
697 buffer_lengths_in_bytes--;
698 if (0 == buffer_lengths_in_bytes) {
699 DPRINTK("%s() Buffers have equal value!!\n",
700 __FUNCTION__);
701 return FAIL_A_IS_EQUAL_TO_B;
702 }
703
704 }
705
706 if (*MSB_K < *MSB_Q) {
707 return SUCCESS_A_IS_LESS_THAN_B;
708 } else {
709 return FAIL_A_IS_GREATER_THAN_B;
710 }
711
712 }
713
714 /* Name : icp_ocfDrvDsaSign
715 *
716 * Description : This function will map DSA RS Sign from OCF to the LAC API.
717 *
718 * NOTE: From looking at OCF patch to OpenSSL and even the number of input
719 * parameters, OCF expects us to generate the random seed value. This value
720 * is generated and passed to LAC, however the number is discared in the
721 * callback and not returned to the user.
722 */
723 static int icp_ocfDrvDsaSign(struct cryptkop *krp)
724 {
725 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
726 CpaCyDsaRSSignOpData *dsaRsSignOpData = NULL;
727 void *callbackTag = NULL;
728 CpaCyRandGenOpData randGenOpData;
729 int primeQSizeInBytes = 0;
730 int doCheck = 0;
731 CpaFlatBuffer randData;
732 CpaBoolean protocolStatus = CPA_FALSE;
733 CpaFlatBuffer *pR = NULL;
734 CpaFlatBuffer *pS = NULL;
735
736 callbackTag = krp;
737
738 BITS_TO_BYTES(primeQSizeInBytes,
739 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_PRIME_Q_INDEX].
740 crp_nbits);
741
742 if (DSA_RS_SIGN_PRIMEQ_SIZE_IN_BYTES != primeQSizeInBytes) {
743 APRINTK("%s(): DSA PRIME Q size not equal to the "
744 "FIPS defined 20bytes, = %d\n",
745 __FUNCTION__, primeQSizeInBytes);
746 krp->krp_status = EDOM;
747 return EDOM;
748 }
749
750 dsaRsSignOpData = kmem_cache_zalloc(drvDSARSSign_zone, GFP_KERNEL);
751 if (NULL == dsaRsSignOpData) {
752 APRINTK("%s():Failed to get memory"
753 " for DSA RS Sign Op data struct\n", __FUNCTION__);
754 krp->krp_status = ENOMEM;
755 return ENOMEM;
756 }
757
758 dsaRsSignOpData->K.pData =
759 kmem_cache_alloc(drvDSARSSignKValue_zone, GFP_ATOMIC);
760
761 if (NULL == dsaRsSignOpData->K.pData) {
762 APRINTK("%s():Failed to get memory"
763 " for DSA RS Sign Op Random value\n", __FUNCTION__);
764 kmem_cache_free(drvDSARSSign_zone, dsaRsSignOpData);
765 krp->krp_status = ENOMEM;
766 return ENOMEM;
767 }
768
769 pR = kmem_cache_zalloc(drvFlatBuffer_zone, GFP_KERNEL);
770 if (NULL == pR) {
771 APRINTK("%s():Failed to get memory"
772 " for DSA signature R\n", __FUNCTION__);
773 kmem_cache_free(drvDSARSSignKValue_zone,
774 dsaRsSignOpData->K.pData);
775 kmem_cache_free(drvDSARSSign_zone, dsaRsSignOpData);
776 krp->krp_status = ENOMEM;
777 return ENOMEM;
778 }
779
780 pS = kmem_cache_zalloc(drvFlatBuffer_zone, GFP_KERNEL);
781 if (NULL == pS) {
782 APRINTK("%s():Failed to get memory"
783 " for DSA signature S\n", __FUNCTION__);
784 icp_ocfDrvFreeFlatBuffer(pR);
785 kmem_cache_free(drvDSARSSignKValue_zone,
786 dsaRsSignOpData->K.pData);
787 kmem_cache_free(drvDSARSSign_zone, dsaRsSignOpData);
788 krp->krp_status = ENOMEM;
789 return ENOMEM;
790 }
791
792 /*link prime number parameter for ease of processing */
793 dsaRsSignOpData->P.pData =
794 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_PRIME_P_INDEX].crp_p;
795 BITS_TO_BYTES(dsaRsSignOpData->P.dataLenInBytes,
796 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_PRIME_P_INDEX].
797 crp_nbits);
798
799 icp_ocfDrvSwapBytes(dsaRsSignOpData->P.pData,
800 dsaRsSignOpData->P.dataLenInBytes);
801
802 dsaRsSignOpData->Q.pData =
803 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_PRIME_Q_INDEX].crp_p;
804 BITS_TO_BYTES(dsaRsSignOpData->Q.dataLenInBytes,
805 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_PRIME_Q_INDEX].
806 crp_nbits);
807
808 icp_ocfDrvSwapBytes(dsaRsSignOpData->Q.pData,
809 dsaRsSignOpData->Q.dataLenInBytes);
810
811 /*generate random number with equal buffer size to Prime value Q,
812 but value less than Q */
813 dsaRsSignOpData->K.dataLenInBytes = dsaRsSignOpData->Q.dataLenInBytes;
814
815 randGenOpData.generateBits = CPA_TRUE;
816 randGenOpData.lenInBytes = dsaRsSignOpData->K.dataLenInBytes;
817
818 icp_ocfDrvPtrAndLenToFlatBuffer(dsaRsSignOpData->K.pData,
819 dsaRsSignOpData->K.dataLenInBytes,
820 &randData);
821
822 doCheck = 0;
823 while (icp_ocfDrvCheckALessThanB(&(dsaRsSignOpData->K),
824 &(dsaRsSignOpData->Q), &doCheck)) {
825
826 if (CPA_STATUS_SUCCESS
827 != cpaCyRandGen(CPA_INSTANCE_HANDLE_SINGLE,
828 NULL, NULL, &randGenOpData, &randData)) {
829 APRINTK("%s(): ERROR - Failed to generate DSA RS Sign K"
830 "value\n", __FUNCTION__);
831 icp_ocfDrvFreeFlatBuffer(pS);
832 icp_ocfDrvFreeFlatBuffer(pR);
833 kmem_cache_free(drvDSARSSignKValue_zone,
834 dsaRsSignOpData->K.pData);
835 kmem_cache_free(drvDSARSSign_zone, dsaRsSignOpData);
836 krp->krp_status = EAGAIN;
837 return EAGAIN;
838 }
839
840 doCheck++;
841 if (DSA_SIGN_RAND_GEN_VAL_CHECK_MAX_ITERATIONS == doCheck) {
842 APRINTK("%s(): ERROR - Failed to find DSA RS Sign K "
843 "value less than Q value\n", __FUNCTION__);
844 icp_ocfDrvFreeFlatBuffer(pS);
845 icp_ocfDrvFreeFlatBuffer(pR);
846 kmem_cache_free(drvDSARSSignKValue_zone,
847 dsaRsSignOpData->K.pData);
848 kmem_cache_free(drvDSARSSign_zone, dsaRsSignOpData);
849 krp->krp_status = EAGAIN;
850 return EAGAIN;
851 }
852
853 }
854 /*Rand Data - no need to swap bytes for pK */
855
856 /* Link parameters */
857 dsaRsSignOpData->G.pData =
858 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_G_INDEX].crp_p;
859 BITS_TO_BYTES(dsaRsSignOpData->G.dataLenInBytes,
860 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_G_INDEX].crp_nbits);
861
862 icp_ocfDrvSwapBytes(dsaRsSignOpData->G.pData,
863 dsaRsSignOpData->G.dataLenInBytes);
864
865 dsaRsSignOpData->X.pData =
866 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_X_INDEX].crp_p;
867 BITS_TO_BYTES(dsaRsSignOpData->X.dataLenInBytes,
868 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_X_INDEX].crp_nbits);
869 icp_ocfDrvSwapBytes(dsaRsSignOpData->X.pData,
870 dsaRsSignOpData->X.dataLenInBytes);
871
872 dsaRsSignOpData->M.pData =
873 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_DGST_INDEX].crp_p;
874 BITS_TO_BYTES(dsaRsSignOpData->M.dataLenInBytes,
875 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_DGST_INDEX].
876 crp_nbits);
877 icp_ocfDrvSwapBytes(dsaRsSignOpData->M.pData,
878 dsaRsSignOpData->M.dataLenInBytes);
879
880 /* Output Parameters */
881 pS->pData = krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_S_RESULT_INDEX].crp_p;
882 BITS_TO_BYTES(pS->dataLenInBytes,
883 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_S_RESULT_INDEX].
884 crp_nbits);
885
886 pR->pData = krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_R_RESULT_INDEX].crp_p;
887 BITS_TO_BYTES(pR->dataLenInBytes,
888 krp->krp_param[ICP_DSA_SIGN_KRP_PARAM_R_RESULT_INDEX].
889 crp_nbits);
890
891 lacStatus = cpaCyDsaSignRS(CPA_INSTANCE_HANDLE_SINGLE,
892 icp_ocfDrvDsaRSSignCallBack,
893 callbackTag, dsaRsSignOpData,
894 &protocolStatus, pR, pS);
895
896 if (CPA_STATUS_SUCCESS != lacStatus) {
897 EPRINTK("%s(): DSA RS Sign Operation failed (%d).\n",
898 __FUNCTION__, lacStatus);
899 krp->krp_status = ECANCELED;
900 icp_ocfDrvFreeFlatBuffer(pS);
901 icp_ocfDrvFreeFlatBuffer(pR);
902 kmem_cache_free(drvDSARSSignKValue_zone,
903 dsaRsSignOpData->K.pData);
904 kmem_cache_free(drvDSARSSign_zone, dsaRsSignOpData);
905 }
906
907 return lacStatus;
908 }
909
910 /* Name : icp_ocfDrvDsaVerify
911 *
912 * Description : This function will map DSA RS Verify from OCF to the LAC API.
913 *
914 */
915 static int icp_ocfDrvDsaVerify(struct cryptkop *krp)
916 {
917 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
918 CpaCyDsaVerifyOpData *dsaVerifyOpData = NULL;
919 void *callbackTag = NULL;
920 CpaBoolean verifyStatus = CPA_FALSE;
921
922 callbackTag = krp;
923
924 dsaVerifyOpData = kmem_cache_zalloc(drvDSAVerify_zone, GFP_KERNEL);
925 if (NULL == dsaVerifyOpData) {
926 APRINTK("%s():Failed to get memory"
927 " for DSA Verify Op data struct\n", __FUNCTION__);
928 krp->krp_status = ENOMEM;
929 return ENOMEM;
930 }
931
932 /* Link parameters */
933 dsaVerifyOpData->P.pData =
934 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_PRIME_P_INDEX].crp_p;
935 BITS_TO_BYTES(dsaVerifyOpData->P.dataLenInBytes,
936 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_PRIME_P_INDEX].
937 crp_nbits);
938 icp_ocfDrvSwapBytes(dsaVerifyOpData->P.pData,
939 dsaVerifyOpData->P.dataLenInBytes);
940
941 dsaVerifyOpData->Q.pData =
942 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_PRIME_Q_INDEX].crp_p;
943 BITS_TO_BYTES(dsaVerifyOpData->Q.dataLenInBytes,
944 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_PRIME_Q_INDEX].
945 crp_nbits);
946 icp_ocfDrvSwapBytes(dsaVerifyOpData->Q.pData,
947 dsaVerifyOpData->Q.dataLenInBytes);
948
949 dsaVerifyOpData->G.pData =
950 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_G_INDEX].crp_p;
951 BITS_TO_BYTES(dsaVerifyOpData->G.dataLenInBytes,
952 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_G_INDEX].
953 crp_nbits);
954 icp_ocfDrvSwapBytes(dsaVerifyOpData->G.pData,
955 dsaVerifyOpData->G.dataLenInBytes);
956
957 dsaVerifyOpData->Y.pData =
958 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_PUBKEY_INDEX].crp_p;
959 BITS_TO_BYTES(dsaVerifyOpData->Y.dataLenInBytes,
960 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_PUBKEY_INDEX].
961 crp_nbits);
962 icp_ocfDrvSwapBytes(dsaVerifyOpData->Y.pData,
963 dsaVerifyOpData->Y.dataLenInBytes);
964
965 dsaVerifyOpData->M.pData =
966 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_DGST_INDEX].crp_p;
967 BITS_TO_BYTES(dsaVerifyOpData->M.dataLenInBytes,
968 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_DGST_INDEX].
969 crp_nbits);
970 icp_ocfDrvSwapBytes(dsaVerifyOpData->M.pData,
971 dsaVerifyOpData->M.dataLenInBytes);
972
973 dsaVerifyOpData->R.pData =
974 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_SIG_R_INDEX].crp_p;
975 BITS_TO_BYTES(dsaVerifyOpData->R.dataLenInBytes,
976 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_SIG_R_INDEX].
977 crp_nbits);
978 icp_ocfDrvSwapBytes(dsaVerifyOpData->R.pData,
979 dsaVerifyOpData->R.dataLenInBytes);
980
981 dsaVerifyOpData->S.pData =
982 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_SIG_S_INDEX].crp_p;
983 BITS_TO_BYTES(dsaVerifyOpData->S.dataLenInBytes,
984 krp->krp_param[ICP_DSA_VERIFY_KRP_PARAM_SIG_S_INDEX].
985 crp_nbits);
986 icp_ocfDrvSwapBytes(dsaVerifyOpData->S.pData,
987 dsaVerifyOpData->S.dataLenInBytes);
988
989 lacStatus = cpaCyDsaVerify(CPA_INSTANCE_HANDLE_SINGLE,
990 icp_ocfDrvDsaVerifyCallBack,
991 callbackTag, dsaVerifyOpData, &verifyStatus);
992
993 if (CPA_STATUS_SUCCESS != lacStatus) {
994 EPRINTK("%s(): DSA Verify Operation failed (%d).\n",
995 __FUNCTION__, lacStatus);
996 kmem_cache_free(drvDSAVerify_zone, dsaVerifyOpData);
997 krp->krp_status = ECANCELED;
998 }
999
1000 return lacStatus;
1001 }
1002
1003 /* Name : icp_ocfDrvReadRandom
1004 *
1005 * Description : This function will map RNG functionality calls from OCF
1006 * to the LAC API.
1007 */
1008 int icp_ocfDrvReadRandom(void *arg, uint32_t * buf, int maxwords)
1009 {
1010 CpaStatus lacStatus = CPA_STATUS_SUCCESS;
1011 CpaCyRandGenOpData randGenOpData;
1012 CpaFlatBuffer randData;
1013
1014 if (NULL == buf) {
1015 APRINTK("%s(): Invalid input parameters\n", __FUNCTION__);
1016 return EINVAL;
1017 }
1018
1019 /* maxwords here is number of integers to generate data for */
1020 randGenOpData.generateBits = CPA_TRUE;
1021
1022 randGenOpData.lenInBytes = maxwords * sizeof(uint32_t);
1023
1024 icp_ocfDrvPtrAndLenToFlatBuffer((Cpa8U *) buf,
1025 randGenOpData.lenInBytes, &randData);
1026
1027 lacStatus = cpaCyRandGen(CPA_INSTANCE_HANDLE_SINGLE,
1028 NULL, NULL, &randGenOpData, &randData);
1029 if (CPA_STATUS_SUCCESS != lacStatus) {
1030 EPRINTK("%s(): icp_LacSymRandGen failed (%d). \n",
1031 __FUNCTION__, lacStatus);
1032 return RETURN_RAND_NUM_GEN_FAILED;
1033 }
1034
1035 return randGenOpData.lenInBytes / sizeof(uint32_t);
1036 }
1037
1038 /* Name : icp_ocfDrvDhP1Callback
1039 *
1040 * Description : When this function returns it signifies that the LAC
1041 * component has completed the DH operation.
1042 */
1043 static void
1044 icp_ocfDrvDhP1CallBack(void *callbackTag,
1045 CpaStatus status,
1046 void *pOpData, CpaFlatBuffer * pLocalOctetStringPV)
1047 {
1048 struct cryptkop *krp = NULL;
1049 CpaCyDhPhase1KeyGenOpData *pPhase1OpData = NULL;
1050
1051 if (NULL == callbackTag) {
1052 DPRINTK("%s(): Invalid input parameters - "
1053 "callbackTag data is NULL\n", __FUNCTION__);
1054 return;
1055 }
1056 krp = (struct cryptkop *)callbackTag;
1057
1058 if (NULL == pOpData) {
1059 DPRINTK("%s(): Invalid input parameters - "
1060 "Operation Data is NULL\n", __FUNCTION__);
1061 krp->krp_status = ECANCELED;
1062 crypto_kdone(krp);
1063 return;
1064 }
1065 pPhase1OpData = (CpaCyDhPhase1KeyGenOpData *) pOpData;
1066
1067 if (NULL == pLocalOctetStringPV) {
1068 DPRINTK("%s(): Invalid input parameters - "
1069 "pLocalOctetStringPV Data is NULL\n", __FUNCTION__);
1070 memset(pPhase1OpData, 0, sizeof(CpaCyDhPhase1KeyGenOpData));
1071 kmem_cache_free(drvDH_zone, pPhase1OpData);
1072 krp->krp_status = ECANCELED;
1073 crypto_kdone(krp);
1074 return;
1075 }
1076
1077 if (CPA_STATUS_SUCCESS == status) {
1078 krp->krp_status = CRYPTO_OP_SUCCESS;
1079 } else {
1080 APRINTK("%s(): Diffie Hellman Phase1 Key Gen failed - "
1081 "Operation Status = %d\n", __FUNCTION__, status);
1082 krp->krp_status = ECANCELED;
1083 }
1084
1085 icp_ocfDrvSwapBytes(pLocalOctetStringPV->pData,
1086 pLocalOctetStringPV->dataLenInBytes);
1087
1088 icp_ocfDrvFreeFlatBuffer(pLocalOctetStringPV);
1089 memset(pPhase1OpData, 0, sizeof(CpaCyDhPhase1KeyGenOpData));
1090 kmem_cache_free(drvDH_zone, pPhase1OpData);
1091
1092 crypto_kdone(krp);
1093
1094 return;
1095 }
1096
1097 /* Name : icp_ocfDrvModExpCallBack
1098 *
1099 * Description : When this function returns it signifies that the LAC
1100 * component has completed the Mod Exp operation.
1101 */
1102 static void
1103 icp_ocfDrvModExpCallBack(void *callbackTag,
1104 CpaStatus status,
1105 void *pOpdata, CpaFlatBuffer * pResult)
1106 {
1107 struct cryptkop *krp = NULL;
1108 CpaCyLnModExpOpData *pLnModExpOpData = NULL;
1109
1110 if (NULL == callbackTag) {
1111 DPRINTK("%s(): Invalid input parameters - "
1112 "callbackTag data is NULL\n", __FUNCTION__);
1113 return;
1114 }
1115 krp = (struct cryptkop *)callbackTag;
1116
1117 if (NULL == pOpdata) {
1118 DPRINTK("%s(): Invalid Mod Exp input parameters - "
1119 "Operation Data is NULL\n", __FUNCTION__);
1120 krp->krp_status = ECANCELED;
1121 crypto_kdone(krp);
1122 return;
1123 }
1124 pLnModExpOpData = (CpaCyLnModExpOpData *) pOpdata;
1125
1126 if (NULL == pResult) {
1127 DPRINTK("%s(): Invalid input parameters - "
1128 "pResult data is NULL\n", __FUNCTION__);
1129 krp->krp_status = ECANCELED;
1130 memset(pLnModExpOpData, 0, sizeof(CpaCyLnModExpOpData));
1131 kmem_cache_free(drvLnModExp_zone, pLnModExpOpData);
1132 crypto_kdone(krp);
1133 return;
1134 }
1135
1136 if (CPA_STATUS_SUCCESS == status) {
1137 krp->krp_status = CRYPTO_OP_SUCCESS;
1138 } else {
1139 APRINTK("%s(): LAC Mod Exp Operation failed - "
1140 "Operation Status = %d\n", __FUNCTION__, status);
1141 krp->krp_status = ECANCELED;
1142 }
1143
1144 icp_ocfDrvSwapBytes(pResult->pData, pResult->dataLenInBytes);
1145
1146 /*switch base size value back to original */
1147 if (pLnModExpOpData->base.pData ==
1148 (uint8_t *) & (krp->
1149 krp_param[ICP_MOD_EXP_KRP_PARAM_BASE_INDEX].
1150 crp_nbits)) {
1151 *((uint32_t *) pLnModExpOpData->base.pData) =
1152 ntohl(*((uint32_t *) pLnModExpOpData->base.pData));
1153 }
1154 icp_ocfDrvFreeFlatBuffer(pResult);
1155 memset(pLnModExpOpData, 0, sizeof(CpaCyLnModExpOpData));
1156 kmem_cache_free(drvLnModExp_zone, pLnModExpOpData);
1157
1158 crypto_kdone(krp);
1159
1160 return;
1161
1162 }
1163
1164 /* Name : icp_ocfDrvModExpCRTCallBack
1165 *
1166 * Description : When this function returns it signifies that the LAC
1167 * component has completed the Mod Exp CRT operation.
1168 */
1169 static void
1170 icp_ocfDrvModExpCRTCallBack(void *callbackTag,
1171 CpaStatus status,
1172 void *pOpData, CpaFlatBuffer * pOutputData)
1173 {
1174 struct cryptkop *krp = NULL;
1175 CpaCyRsaDecryptOpData *pDecryptData = NULL;
1176
1177 if (NULL == callbackTag) {
1178 DPRINTK("%s(): Invalid input parameters - "
1179 "callbackTag data is NULL\n", __FUNCTION__);
1180 return;
1181 }
1182
1183 krp = (struct cryptkop *)callbackTag;
1184
1185 if (NULL == pOpData) {
1186 DPRINTK("%s(): Invalid input parameters - "
1187 "Operation Data is NULL\n", __FUNCTION__);
1188 krp->krp_status = ECANCELED;
1189 crypto_kdone(krp);
1190 return;
1191 }
1192 pDecryptData = (CpaCyRsaDecryptOpData *) pOpData;
1193
1194 if (NULL == pOutputData) {
1195 DPRINTK("%s(): Invalid input parameter - "
1196 "pOutputData is NULL\n", __FUNCTION__);
1197 memset(pDecryptData->pRecipientPrivateKey, 0,
1198 sizeof(CpaCyRsaPrivateKey));
1199 kmem_cache_free(drvRSAPrivateKey_zone,
1200 pDecryptData->pRecipientPrivateKey);
1201 memset(pDecryptData, 0, sizeof(CpaCyRsaDecryptOpData));
1202 kmem_cache_free(drvRSADecrypt_zone, pDecryptData);
1203 krp->krp_status = ECANCELED;
1204 crypto_kdone(krp);
1205 return;
1206 }
1207
1208 if (CPA_STATUS_SUCCESS == status) {
1209 krp->krp_status = CRYPTO_OP_SUCCESS;
1210 } else {
1211 APRINTK("%s(): LAC Mod Exp CRT operation failed - "
1212 "Operation Status = %d\n", __FUNCTION__, status);
1213 krp->krp_status = ECANCELED;
1214 }
1215
1216 icp_ocfDrvSwapBytes(pOutputData->pData, pOutputData->dataLenInBytes);
1217
1218 icp_ocfDrvFreeFlatBuffer(pOutputData);
1219 memset(pDecryptData->pRecipientPrivateKey, 0,
1220 sizeof(CpaCyRsaPrivateKey));
1221 kmem_cache_free(drvRSAPrivateKey_zone,
1222 pDecryptData->pRecipientPrivateKey);
1223 memset(pDecryptData, 0, sizeof(CpaCyRsaDecryptOpData));
1224 kmem_cache_free(drvRSADecrypt_zone, pDecryptData);
1225
1226 crypto_kdone(krp);
1227
1228 return;
1229 }
1230
1231 /* Name : icp_ocfDrvDsaRSSignCallBack
1232 *
1233 * Description : When this function returns it signifies that the LAC
1234 * component has completed the DSA RS sign operation.
1235 */
1236 static void
1237 icp_ocfDrvDsaRSSignCallBack(void *callbackTag,
1238 CpaStatus status,
1239 void *pOpData,
1240 CpaBoolean protocolStatus,
1241 CpaFlatBuffer * pR, CpaFlatBuffer * pS)
1242 {
1243 struct cryptkop *krp = NULL;
1244 CpaCyDsaRSSignOpData *pSignData = NULL;
1245
1246 if (NULL == callbackTag) {
1247 DPRINTK("%s(): Invalid input parameters - "
1248 "callbackTag data is NULL\n", __FUNCTION__);
1249 return;
1250 }
1251
1252 krp = (struct cryptkop *)callbackTag;
1253
1254 if (NULL == pOpData) {
1255 DPRINTK("%s(): Invalid input parameters - "
1256 "Operation Data is NULL\n", __FUNCTION__);
1257 krp->krp_status = ECANCELED;
1258 crypto_kdone(krp);
1259 return;
1260 }
1261 pSignData = (CpaCyDsaRSSignOpData *) pOpData;
1262
1263 if (NULL == pR) {
1264 DPRINTK("%s(): Invalid input parameter - "
1265 "pR sign is NULL\n", __FUNCTION__);
1266 icp_ocfDrvFreeFlatBuffer(pS);
1267 kmem_cache_free(drvDSARSSign_zone, pSignData);
1268 krp->krp_status = ECANCELED;
1269 crypto_kdone(krp);
1270 return;
1271 }
1272
1273 if (NULL == pS) {
1274 DPRINTK("%s(): Invalid input parameter - "
1275 "pS sign is NULL\n", __FUNCTION__);
1276 icp_ocfDrvFreeFlatBuffer(pR);
1277 kmem_cache_free(drvDSARSSign_zone, pSignData);
1278 krp->krp_status = ECANCELED;
1279 crypto_kdone(krp);
1280 return;
1281 }
1282
1283 if (CPA_STATUS_SUCCESS != status) {
1284 APRINTK("%s(): LAC DSA RS Sign operation failed - "
1285 "Operation Status = %d\n", __FUNCTION__, status);
1286 krp->krp_status = ECANCELED;
1287 } else {
1288 krp->krp_status = CRYPTO_OP_SUCCESS;
1289
1290 if (CPA_TRUE != protocolStatus) {
1291 DPRINTK("%s(): LAC DSA RS Sign operation failed due "
1292 "to protocol error\n", __FUNCTION__);
1293 krp->krp_status = EIO;
1294 }
1295 }
1296
1297 /* Swap bytes only when the callback status is successful and
1298 protocolStatus is set to true */
1299 if (CPA_STATUS_SUCCESS == status && CPA_TRUE == protocolStatus) {
1300 icp_ocfDrvSwapBytes(pR->pData, pR->dataLenInBytes);
1301 icp_ocfDrvSwapBytes(pS->pData, pS->dataLenInBytes);
1302 }
1303
1304 icp_ocfDrvFreeFlatBuffer(pR);
1305 icp_ocfDrvFreeFlatBuffer(pS);
1306 memset(pSignData->K.pData, 0, pSignData->K.dataLenInBytes);
1307 kmem_cache_free(drvDSARSSignKValue_zone, pSignData->K.pData);
1308 memset(pSignData, 0, sizeof(CpaCyDsaRSSignOpData));
1309 kmem_cache_free(drvDSARSSign_zone, pSignData);
1310 crypto_kdone(krp);
1311
1312 return;
1313 }
1314
1315 /* Name : icp_ocfDrvDsaVerifyCallback
1316 *
1317 * Description : When this function returns it signifies that the LAC
1318 * component has completed the DSA Verify operation.
1319 */
1320 static void
1321 icp_ocfDrvDsaVerifyCallBack(void *callbackTag,
1322 CpaStatus status,
1323 void *pOpData, CpaBoolean verifyStatus)
1324 {
1325
1326 struct cryptkop *krp = NULL;
1327 CpaCyDsaVerifyOpData *pVerData = NULL;
1328
1329 if (NULL == callbackTag) {
1330 DPRINTK("%s(): Invalid input parameters - "
1331 "callbackTag data is NULL\n", __FUNCTION__);
1332 return;
1333 }
1334
1335 krp = (struct cryptkop *)callbackTag;
1336
1337 if (NULL == pOpData) {
1338 DPRINTK("%s(): Invalid input parameters - "
1339 "Operation Data is NULL\n", __FUNCTION__);
1340 krp->krp_status = ECANCELED;
1341 crypto_kdone(krp);
1342 return;
1343 }
1344 pVerData = (CpaCyDsaVerifyOpData *) pOpData;
1345
1346 if (CPA_STATUS_SUCCESS != status) {
1347 APRINTK("%s(): LAC DSA Verify operation failed - "
1348 "Operation Status = %d\n", __FUNCTION__, status);
1349 krp->krp_status = ECANCELED;
1350 } else {
1351 krp->krp_status = CRYPTO_OP_SUCCESS;
1352
1353 if (CPA_TRUE != verifyStatus) {
1354 DPRINTK("%s(): DSA signature invalid\n", __FUNCTION__);
1355 krp->krp_status = EIO;
1356 }
1357 }
1358
1359 /* Swap bytes only when the callback status is successful and
1360 verifyStatus is set to true */
1361 /*Just swapping back the key values for now. Possibly all
1362 swapped buffers need to be reverted */
1363 if (CPA_STATUS_SUCCESS == status && CPA_TRUE == verifyStatus) {
1364 icp_ocfDrvSwapBytes(pVerData->R.pData,
1365 pVerData->R.dataLenInBytes);
1366 icp_ocfDrvSwapBytes(pVerData->S.pData,
1367 pVerData->S.dataLenInBytes);
1368 }
1369
1370 memset(pVerData, 0, sizeof(CpaCyDsaVerifyOpData));
1371 kmem_cache_free(drvDSAVerify_zone, pVerData);
1372 crypto_kdone(krp);
1373
1374 return;
1375 }
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