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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifsencrypt.c | |
3 | * | |
8b7a4544 SF |
4 | * Encryption and hashing operations relating to NTLM, NTLMv2. See MS-NLMP |
5 | * for more detailed information | |
6 | * | |
95dc8dd1 | 7 | * Copyright (C) International Business Machines Corp., 2005,2013 |
1da177e4 LT |
8 | * Author(s): Steve French (sfrench@us.ibm.com) |
9 | * | |
10 | * This library is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU Lesser General Public License as published | |
12 | * by the Free Software Foundation; either version 2.1 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This library is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
18 | * the GNU Lesser General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU Lesser General Public License | |
21 | * along with this library; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <linux/fs.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
1da177e4 | 27 | #include "cifspdu.h" |
ffdd6e4d | 28 | #include "cifsglob.h" |
1da177e4 | 29 | #include "cifs_debug.h" |
1da177e4 LT |
30 | #include "cifs_unicode.h" |
31 | #include "cifsproto.h" | |
2b149f11 | 32 | #include "ntlmssp.h" |
7c7b25bc | 33 | #include <linux/ctype.h> |
6d027cfd | 34 | #include <linux/random.h> |
fb308a6f | 35 | #include <linux/highmem.h> |
9651ddba | 36 | #include <crypto/skcipher.h> |
026e93dc | 37 | #include <crypto/aead.h> |
1da177e4 | 38 | |
95dc8dd1 SF |
39 | static int |
40 | cifs_crypto_shash_md5_allocate(struct TCP_Server_Info *server) | |
41 | { | |
42 | int rc; | |
43 | unsigned int size; | |
44 | ||
45 | if (server->secmech.sdescmd5 != NULL) | |
46 | return 0; /* already allocated */ | |
47 | ||
48 | server->secmech.md5 = crypto_alloc_shash("md5", 0, 0); | |
49 | if (IS_ERR(server->secmech.md5)) { | |
50 | cifs_dbg(VFS, "could not allocate crypto md5\n"); | |
ba482029 JL |
51 | rc = PTR_ERR(server->secmech.md5); |
52 | server->secmech.md5 = NULL; | |
53 | return rc; | |
95dc8dd1 SF |
54 | } |
55 | ||
56 | size = sizeof(struct shash_desc) + | |
57 | crypto_shash_descsize(server->secmech.md5); | |
58 | server->secmech.sdescmd5 = kmalloc(size, GFP_KERNEL); | |
59 | if (!server->secmech.sdescmd5) { | |
95dc8dd1 SF |
60 | crypto_free_shash(server->secmech.md5); |
61 | server->secmech.md5 = NULL; | |
ba482029 | 62 | return -ENOMEM; |
95dc8dd1 SF |
63 | } |
64 | server->secmech.sdescmd5->shash.tfm = server->secmech.md5; | |
65 | server->secmech.sdescmd5->shash.flags = 0x0; | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
16c568ef AV |
70 | int __cifs_calc_signature(struct smb_rqst *rqst, |
71 | struct TCP_Server_Info *server, char *signature, | |
72 | struct shash_desc *shash) | |
84afc29b | 73 | { |
e9917a00 | 74 | int i; |
307fbd31 | 75 | int rc; |
bf5ea0e2 JL |
76 | struct kvec *iov = rqst->rq_iov; |
77 | int n_vec = rqst->rq_nvec; | |
84afc29b | 78 | |
738f9de5 PS |
79 | if (n_vec < 2 || iov[0].iov_len != 4) |
80 | return -EIO; | |
81 | ||
82 | for (i = 1; i < n_vec; i++) { | |
745542e2 JL |
83 | if (iov[i].iov_len == 0) |
84 | continue; | |
ffdd6e4d | 85 | if (iov[i].iov_base == NULL) { |
f96637be | 86 | cifs_dbg(VFS, "null iovec entry\n"); |
e9917a00 | 87 | return -EIO; |
745542e2 | 88 | } |
738f9de5 PS |
89 | if (i == 1 && iov[1].iov_len <= 4) |
90 | break; /* nothing to sign or corrupt header */ | |
91 | rc = crypto_shash_update(shash, | |
92 | iov[i].iov_base, iov[i].iov_len); | |
14cae324 | 93 | if (rc) { |
f96637be JP |
94 | cifs_dbg(VFS, "%s: Could not update with payload\n", |
95 | __func__); | |
14cae324 SP |
96 | return rc; |
97 | } | |
e9917a00 | 98 | } |
84afc29b | 99 | |
fb308a6f JL |
100 | /* now hash over the rq_pages array */ |
101 | for (i = 0; i < rqst->rq_npages; i++) { | |
16c568ef AV |
102 | void *kaddr = kmap(rqst->rq_pages[i]); |
103 | size_t len = rqst->rq_pagesz; | |
104 | ||
105 | if (i == rqst->rq_npages - 1) | |
106 | len = rqst->rq_tailsz; | |
107 | ||
108 | crypto_shash_update(shash, kaddr, len); | |
fb308a6f | 109 | |
fb308a6f JL |
110 | kunmap(rqst->rq_pages[i]); |
111 | } | |
112 | ||
16c568ef | 113 | rc = crypto_shash_final(shash, signature); |
14cae324 | 114 | if (rc) |
16c568ef | 115 | cifs_dbg(VFS, "%s: Could not generate hash\n", __func__); |
84afc29b | 116 | |
307fbd31 | 117 | return rc; |
84afc29b SF |
118 | } |
119 | ||
16c568ef AV |
120 | /* |
121 | * Calculate and return the CIFS signature based on the mac key and SMB PDU. | |
122 | * The 16 byte signature must be allocated by the caller. Note we only use the | |
123 | * 1st eight bytes and that the smb header signature field on input contains | |
124 | * the sequence number before this function is called. Also, this function | |
125 | * should be called with the server->srv_mutex held. | |
126 | */ | |
127 | static int cifs_calc_signature(struct smb_rqst *rqst, | |
128 | struct TCP_Server_Info *server, char *signature) | |
129 | { | |
130 | int rc; | |
131 | ||
132 | if (!rqst->rq_iov || !signature || !server) | |
133 | return -EINVAL; | |
134 | ||
135 | if (!server->secmech.sdescmd5) { | |
136 | rc = cifs_crypto_shash_md5_allocate(server); | |
137 | if (rc) { | |
138 | cifs_dbg(VFS, "%s: Can't alloc md5 crypto\n", __func__); | |
139 | return -1; | |
140 | } | |
141 | } | |
142 | ||
143 | rc = crypto_shash_init(&server->secmech.sdescmd5->shash); | |
144 | if (rc) { | |
145 | cifs_dbg(VFS, "%s: Could not init md5\n", __func__); | |
146 | return rc; | |
147 | } | |
148 | ||
149 | rc = crypto_shash_update(&server->secmech.sdescmd5->shash, | |
150 | server->session_key.response, server->session_key.len); | |
151 | if (rc) { | |
152 | cifs_dbg(VFS, "%s: Could not update with response\n", __func__); | |
153 | return rc; | |
154 | } | |
155 | ||
156 | return __cifs_calc_signature(rqst, server, signature, | |
157 | &server->secmech.sdescmd5->shash); | |
158 | } | |
159 | ||
a0f8b4fb | 160 | /* must be called with server->srv_mutex held */ |
bf5ea0e2 | 161 | int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, |
63d2583f | 162 | __u32 *pexpected_response_sequence_number) |
84afc29b SF |
163 | { |
164 | int rc = 0; | |
165 | char smb_signature[20]; | |
bf5ea0e2 | 166 | struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base; |
84afc29b | 167 | |
738f9de5 PS |
168 | if (rqst->rq_iov[0].iov_len != 4 || |
169 | rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) | |
170 | return -EIO; | |
171 | ||
ffdd6e4d | 172 | if ((cifs_pdu == NULL) || (server == NULL)) |
84afc29b SF |
173 | return -EINVAL; |
174 | ||
998d6fcb JL |
175 | if (!(cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) || |
176 | server->tcpStatus == CifsNeedNegotiate) | |
84afc29b SF |
177 | return rc; |
178 | ||
998d6fcb | 179 | if (!server->session_estab) { |
b4dacbc2 | 180 | memcpy(cifs_pdu->Signature.SecuritySignature, "BSRSPYL", 8); |
998d6fcb JL |
181 | return rc; |
182 | } | |
183 | ||
ffdd6e4d | 184 | cifs_pdu->Signature.Sequence.SequenceNumber = |
84afc29b | 185 | cpu_to_le32(server->sequence_number); |
ffdd6e4d | 186 | cifs_pdu->Signature.Sequence.Reserved = 0; |
84afc29b | 187 | |
0124cc45 JL |
188 | *pexpected_response_sequence_number = ++server->sequence_number; |
189 | ++server->sequence_number; | |
84afc29b | 190 | |
bf5ea0e2 | 191 | rc = cifs_calc_signature(rqst, server, smb_signature); |
ffdd6e4d SF |
192 | if (rc) |
193 | memset(cifs_pdu->Signature.SecuritySignature, 0, 8); | |
194 | else | |
195 | memcpy(cifs_pdu->Signature.SecuritySignature, smb_signature, 8); | |
84afc29b | 196 | |
ffdd6e4d | 197 | return rc; |
84afc29b SF |
198 | } |
199 | ||
bf5ea0e2 JL |
200 | int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *server, |
201 | __u32 *pexpected_response_sequence) | |
202 | { | |
203 | struct smb_rqst rqst = { .rq_iov = iov, | |
204 | .rq_nvec = n_vec }; | |
205 | ||
206 | return cifs_sign_rqst(&rqst, server, pexpected_response_sequence); | |
207 | } | |
208 | ||
826a95e4 JL |
209 | /* must be called with server->srv_mutex held */ |
210 | int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server, | |
211 | __u32 *pexpected_response_sequence_number) | |
212 | { | |
738f9de5 | 213 | struct kvec iov[2]; |
826a95e4 | 214 | |
738f9de5 PS |
215 | iov[0].iov_base = cifs_pdu; |
216 | iov[0].iov_len = 4; | |
217 | iov[1].iov_base = (char *)cifs_pdu + 4; | |
218 | iov[1].iov_len = be32_to_cpu(cifs_pdu->smb_buf_length); | |
826a95e4 | 219 | |
738f9de5 | 220 | return cifs_sign_smbv(iov, 2, server, |
826a95e4 JL |
221 | pexpected_response_sequence_number); |
222 | } | |
223 | ||
bf5ea0e2 | 224 | int cifs_verify_signature(struct smb_rqst *rqst, |
21e73393 | 225 | struct TCP_Server_Info *server, |
ffdd6e4d | 226 | __u32 expected_sequence_number) |
1da177e4 | 227 | { |
c8e56f1f | 228 | unsigned int rc; |
1da177e4 LT |
229 | char server_response_sig[8]; |
230 | char what_we_think_sig_should_be[20]; | |
bf5ea0e2 | 231 | struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base; |
1da177e4 | 232 | |
738f9de5 PS |
233 | if (rqst->rq_iov[0].iov_len != 4 || |
234 | rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) | |
235 | return -EIO; | |
236 | ||
21e73393 | 237 | if (cifs_pdu == NULL || server == NULL) |
1da177e4 LT |
238 | return -EINVAL; |
239 | ||
9c4843ea | 240 | if (!server->session_estab) |
1da177e4 LT |
241 | return 0; |
242 | ||
243 | if (cifs_pdu->Command == SMB_COM_LOCKING_ANDX) { | |
50c2f753 | 244 | struct smb_com_lock_req *pSMB = |
ffdd6e4d SF |
245 | (struct smb_com_lock_req *)cifs_pdu; |
246 | if (pSMB->LockType & LOCKING_ANDX_OPLOCK_RELEASE) | |
1da177e4 LT |
247 | return 0; |
248 | } | |
249 | ||
50c2f753 SF |
250 | /* BB what if signatures are supposed to be on for session but |
251 | server does not send one? BB */ | |
252 | ||
1da177e4 | 253 | /* Do not need to verify session setups with signature "BSRSPYL " */ |
50c2f753 | 254 | if (memcmp(cifs_pdu->Signature.SecuritySignature, "BSRSPYL ", 8) == 0) |
f96637be JP |
255 | cifs_dbg(FYI, "dummy signature received for smb command 0x%x\n", |
256 | cifs_pdu->Command); | |
1da177e4 LT |
257 | |
258 | /* save off the origiginal signature so we can modify the smb and check | |
259 | its signature against what the server sent */ | |
50c2f753 | 260 | memcpy(server_response_sig, cifs_pdu->Signature.SecuritySignature, 8); |
1da177e4 | 261 | |
50c2f753 SF |
262 | cifs_pdu->Signature.Sequence.SequenceNumber = |
263 | cpu_to_le32(expected_sequence_number); | |
1da177e4 LT |
264 | cifs_pdu->Signature.Sequence.Reserved = 0; |
265 | ||
157c2491 | 266 | mutex_lock(&server->srv_mutex); |
bf5ea0e2 | 267 | rc = cifs_calc_signature(rqst, server, what_we_think_sig_should_be); |
157c2491 | 268 | mutex_unlock(&server->srv_mutex); |
1da177e4 | 269 | |
50c2f753 | 270 | if (rc) |
1da177e4 LT |
271 | return rc; |
272 | ||
50c2f753 SF |
273 | /* cifs_dump_mem("what we think it should be: ", |
274 | what_we_think_sig_should_be, 16); */ | |
1da177e4 | 275 | |
50c2f753 | 276 | if (memcmp(server_response_sig, what_we_think_sig_should_be, 8)) |
1da177e4 LT |
277 | return -EACCES; |
278 | else | |
279 | return 0; | |
280 | ||
281 | } | |
282 | ||
21e73393 | 283 | /* first calculate 24 bytes ntlm response and then 16 byte session key */ |
9ef5992e | 284 | int setup_ntlm_response(struct cifs_ses *ses, const struct nls_table *nls_cp) |
1da177e4 | 285 | { |
ee2c9258 | 286 | int rc = 0; |
21e73393 SP |
287 | unsigned int temp_len = CIFS_SESS_KEY_SIZE + CIFS_AUTH_RESP_SIZE; |
288 | char temp_key[CIFS_SESS_KEY_SIZE]; | |
289 | ||
290 | if (!ses) | |
1da177e4 LT |
291 | return -EINVAL; |
292 | ||
21e73393 | 293 | ses->auth_key.response = kmalloc(temp_len, GFP_KERNEL); |
f96637be | 294 | if (!ses->auth_key.response) |
21e73393 | 295 | return -ENOMEM; |
f96637be | 296 | |
21e73393 SP |
297 | ses->auth_key.len = temp_len; |
298 | ||
ee2c9258 | 299 | rc = SMBNTencrypt(ses->password, ses->server->cryptkey, |
9ef5992e | 300 | ses->auth_key.response + CIFS_SESS_KEY_SIZE, nls_cp); |
ee2c9258 | 301 | if (rc) { |
f96637be JP |
302 | cifs_dbg(FYI, "%s Can't generate NTLM response, error: %d\n", |
303 | __func__, rc); | |
ee2c9258 SP |
304 | return rc; |
305 | } | |
306 | ||
9ef5992e | 307 | rc = E_md4hash(ses->password, temp_key, nls_cp); |
ee2c9258 | 308 | if (rc) { |
f96637be JP |
309 | cifs_dbg(FYI, "%s Can't generate NT hash, error: %d\n", |
310 | __func__, rc); | |
ee2c9258 SP |
311 | return rc; |
312 | } | |
21e73393 | 313 | |
ee2c9258 SP |
314 | rc = mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE); |
315 | if (rc) | |
f96637be JP |
316 | cifs_dbg(FYI, "%s Can't generate NTLM session key, error: %d\n", |
317 | __func__, rc); | |
21e73393 | 318 | |
ee2c9258 | 319 | return rc; |
1da177e4 LT |
320 | } |
321 | ||
7c7b25bc | 322 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
43988d76 | 323 | int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt, |
4e53a3fb | 324 | char *lnm_session_key) |
7c7b25bc SF |
325 | { |
326 | int i; | |
43988d76 | 327 | int rc; |
97f4b727 | 328 | char password_with_pad[CIFS_ENCPWD_SIZE] = {0}; |
7c7b25bc | 329 | |
4e53a3fb JL |
330 | if (password) |
331 | strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE); | |
332 | ||
04912d6a | 333 | if (!encrypt && global_secflags & CIFSSEC_MAY_PLNTXT) { |
4e53a3fb JL |
334 | memcpy(lnm_session_key, password_with_pad, |
335 | CIFS_ENCPWD_SIZE); | |
43988d76 | 336 | return 0; |
4e53a3fb | 337 | } |
bdc4bf6e | 338 | |
7c7b25bc SF |
339 | /* calculate old style session key */ |
340 | /* calling toupper is less broken than repeatedly | |
341 | calling nls_toupper would be since that will never | |
342 | work for UTF8, but neither handles multibyte code pages | |
343 | but the only alternative would be converting to UCS-16 (Unicode) | |
344 | (using a routine something like UniStrupr) then | |
345 | uppercasing and then converting back from Unicode - which | |
346 | would only worth doing it if we knew it were utf8. Basically | |
347 | utf8 and other multibyte codepages each need their own strupper | |
348 | function since a byte at a time will ont work. */ | |
349 | ||
ef571cad | 350 | for (i = 0; i < CIFS_ENCPWD_SIZE; i++) |
7c7b25bc | 351 | password_with_pad[i] = toupper(password_with_pad[i]); |
7c7b25bc | 352 | |
43988d76 | 353 | rc = SMBencrypt(password_with_pad, cryptkey, lnm_session_key); |
4e53a3fb | 354 | |
43988d76 | 355 | return rc; |
7c7b25bc SF |
356 | } |
357 | #endif /* CIFS_WEAK_PW_HASH */ | |
358 | ||
9daa42e2 SP |
359 | /* Build a proper attribute value/target info pairs blob. |
360 | * Fill in netbios and dns domain name and workstation name | |
361 | * and client time (total five av pairs and + one end of fields indicator. | |
362 | * Allocate domain name which gets freed when session struct is deallocated. | |
2b149f11 SP |
363 | */ |
364 | static int | |
96daf2b0 | 365 | build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp) |
2b149f11 | 366 | { |
9daa42e2 | 367 | unsigned int dlen; |
cfbd6f84 | 368 | unsigned int size = 2 * sizeof(struct ntlmssp2_name); |
9daa42e2 SP |
369 | char *defdmname = "WORKGROUP"; |
370 | unsigned char *blobptr; | |
2b149f11 SP |
371 | struct ntlmssp2_name *attrptr; |
372 | ||
9daa42e2 SP |
373 | if (!ses->domainName) { |
374 | ses->domainName = kstrdup(defdmname, GFP_KERNEL); | |
375 | if (!ses->domainName) | |
376 | return -ENOMEM; | |
377 | } | |
378 | ||
379 | dlen = strlen(ses->domainName); | |
9daa42e2 | 380 | |
cfbd6f84 SP |
381 | /* |
382 | * The length of this blob is two times the size of a | |
383 | * structure (av pair) which holds name/size | |
384 | * ( for NTLMSSP_AV_NB_DOMAIN_NAME followed by NTLMSSP_AV_EOL ) + | |
385 | * unicode length of a netbios domain name | |
9daa42e2 | 386 | */ |
cfbd6f84 | 387 | ses->auth_key.len = size + 2 * dlen; |
d3686d54 SP |
388 | ses->auth_key.response = kzalloc(ses->auth_key.len, GFP_KERNEL); |
389 | if (!ses->auth_key.response) { | |
390 | ses->auth_key.len = 0; | |
2b149f11 SP |
391 | return -ENOMEM; |
392 | } | |
9daa42e2 | 393 | |
d3686d54 | 394 | blobptr = ses->auth_key.response; |
9daa42e2 SP |
395 | attrptr = (struct ntlmssp2_name *) blobptr; |
396 | ||
cfbd6f84 SP |
397 | /* |
398 | * As defined in MS-NTLM 3.3.2, just this av pair field | |
399 | * is sufficient as part of the temp | |
400 | */ | |
9daa42e2 SP |
401 | attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME); |
402 | attrptr->length = cpu_to_le16(2 * dlen); | |
403 | blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name); | |
acbbb76a | 404 | cifs_strtoUTF16((__le16 *)blobptr, ses->domainName, dlen, nls_cp); |
9daa42e2 | 405 | |
2b149f11 SP |
406 | return 0; |
407 | } | |
408 | ||
409 | /* Server has provided av pairs/target info in the type 2 challenge | |
410 | * packet and we have plucked it and stored within smb session. | |
411 | * We parse that blob here to find netbios domain name to be used | |
412 | * as part of ntlmv2 authentication (in Target String), if not already | |
413 | * specified on the command line. | |
414 | * If this function returns without any error but without fetching | |
415 | * domain name, authentication may fail against some server but | |
416 | * may not fail against other (those who are not very particular | |
417 | * about target string i.e. for some, just user name might suffice. | |
418 | */ | |
419 | static int | |
96daf2b0 | 420 | find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp) |
2b149f11 SP |
421 | { |
422 | unsigned int attrsize; | |
423 | unsigned int type; | |
424 | unsigned int onesize = sizeof(struct ntlmssp2_name); | |
425 | unsigned char *blobptr; | |
426 | unsigned char *blobend; | |
427 | struct ntlmssp2_name *attrptr; | |
428 | ||
d3686d54 | 429 | if (!ses->auth_key.len || !ses->auth_key.response) |
2b149f11 SP |
430 | return 0; |
431 | ||
d3686d54 SP |
432 | blobptr = ses->auth_key.response; |
433 | blobend = blobptr + ses->auth_key.len; | |
2b149f11 SP |
434 | |
435 | while (blobptr + onesize < blobend) { | |
436 | attrptr = (struct ntlmssp2_name *) blobptr; | |
437 | type = le16_to_cpu(attrptr->type); | |
438 | if (type == NTLMSSP_AV_EOL) | |
439 | break; | |
440 | blobptr += 2; /* advance attr type */ | |
441 | attrsize = le16_to_cpu(attrptr->length); | |
442 | blobptr += 2; /* advance attr size */ | |
443 | if (blobptr + attrsize > blobend) | |
444 | break; | |
445 | if (type == NTLMSSP_AV_NB_DOMAIN_NAME) { | |
057d6332 | 446 | if (!attrsize || attrsize >= CIFS_MAX_DOMAINNAME_LEN) |
2b149f11 SP |
447 | break; |
448 | if (!ses->domainName) { | |
449 | ses->domainName = | |
450 | kmalloc(attrsize + 1, GFP_KERNEL); | |
451 | if (!ses->domainName) | |
452 | return -ENOMEM; | |
acbbb76a | 453 | cifs_from_utf16(ses->domainName, |
2b149f11 | 454 | (__le16 *)blobptr, attrsize, attrsize, |
b693855f | 455 | nls_cp, NO_MAP_UNI_RSVD); |
2b149f11 SP |
456 | break; |
457 | } | |
458 | } | |
459 | blobptr += attrsize; /* advance attr value */ | |
460 | } | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
98ce94c8 PS |
465 | /* Server has provided av pairs/target info in the type 2 challenge |
466 | * packet and we have plucked it and stored within smb session. | |
467 | * We parse that blob here to find the server given timestamp | |
468 | * as part of ntlmv2 authentication (or local current time as | |
469 | * default in case of failure) | |
470 | */ | |
471 | static __le64 | |
472 | find_timestamp(struct cifs_ses *ses) | |
473 | { | |
474 | unsigned int attrsize; | |
475 | unsigned int type; | |
476 | unsigned int onesize = sizeof(struct ntlmssp2_name); | |
477 | unsigned char *blobptr; | |
478 | unsigned char *blobend; | |
479 | struct ntlmssp2_name *attrptr; | |
e37fea58 | 480 | struct timespec ts; |
98ce94c8 PS |
481 | |
482 | if (!ses->auth_key.len || !ses->auth_key.response) | |
483 | return 0; | |
484 | ||
485 | blobptr = ses->auth_key.response; | |
486 | blobend = blobptr + ses->auth_key.len; | |
487 | ||
488 | while (blobptr + onesize < blobend) { | |
489 | attrptr = (struct ntlmssp2_name *) blobptr; | |
490 | type = le16_to_cpu(attrptr->type); | |
491 | if (type == NTLMSSP_AV_EOL) | |
492 | break; | |
493 | blobptr += 2; /* advance attr type */ | |
494 | attrsize = le16_to_cpu(attrptr->length); | |
495 | blobptr += 2; /* advance attr size */ | |
496 | if (blobptr + attrsize > blobend) | |
497 | break; | |
498 | if (type == NTLMSSP_AV_TIMESTAMP) { | |
499 | if (attrsize == sizeof(u64)) | |
500 | return *((__le64 *)blobptr); | |
501 | } | |
502 | blobptr += attrsize; /* advance attr value */ | |
503 | } | |
504 | ||
e37fea58 DD |
505 | ktime_get_real_ts(&ts); |
506 | return cpu_to_le64(cifs_UnixTimeToNT(ts)); | |
98ce94c8 PS |
507 | } |
508 | ||
96daf2b0 | 509 | static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, |
50c2f753 | 510 | const struct nls_table *nls_cp) |
a8ee0344 SF |
511 | { |
512 | int rc = 0; | |
513 | int len; | |
307fbd31 | 514 | char nt_hash[CIFS_NTHASH_SIZE]; |
fdf96a90 | 515 | __le16 *user; |
50c2f753 | 516 | wchar_t *domain; |
307fbd31 | 517 | wchar_t *server; |
a8ee0344 | 518 | |
307fbd31 | 519 | if (!ses->server->secmech.sdeschmacmd5) { |
f96637be | 520 | cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__); |
307fbd31 SP |
521 | return -1; |
522 | } | |
56234e27 | 523 | |
c8e56f1f | 524 | /* calculate md4 hash of password */ |
9ef5992e | 525 | E_md4hash(ses->password, nt_hash, nls_cp); |
9fbc5908 | 526 | |
14cae324 | 527 | rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash, |
307fbd31 | 528 | CIFS_NTHASH_SIZE); |
14cae324 | 529 | if (rc) { |
f96637be | 530 | cifs_dbg(VFS, "%s: Could not set NT Hash as a key\n", __func__); |
14cae324 SP |
531 | return rc; |
532 | } | |
307fbd31 SP |
533 | |
534 | rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); | |
535 | if (rc) { | |
f96637be | 536 | cifs_dbg(VFS, "%s: could not init hmacmd5\n", __func__); |
307fbd31 SP |
537 | return rc; |
538 | } | |
a8ee0344 | 539 | |
fdf96a90 | 540 | /* convert ses->user_name to unicode */ |
04febabc | 541 | len = ses->user_name ? strlen(ses->user_name) : 0; |
1717ffc5 | 542 | user = kmalloc(2 + (len * 2), GFP_KERNEL); |
307fbd31 | 543 | if (user == NULL) { |
307fbd31 | 544 | rc = -ENOMEM; |
14cae324 | 545 | return rc; |
307fbd31 | 546 | } |
04febabc JL |
547 | |
548 | if (len) { | |
fdf96a90 | 549 | len = cifs_strtoUTF16(user, ses->user_name, len, nls_cp); |
04febabc JL |
550 | UniStrupr(user); |
551 | } else { | |
552 | memset(user, '\0', 2); | |
553 | } | |
307fbd31 | 554 | |
14cae324 | 555 | rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, |
307fbd31 | 556 | (char *)user, 2 * len); |
14cae324 SP |
557 | kfree(user); |
558 | if (rc) { | |
f96637be | 559 | cifs_dbg(VFS, "%s: Could not update with user\n", __func__); |
14cae324 SP |
560 | return rc; |
561 | } | |
a8ee0344 SF |
562 | |
563 | /* convert ses->domainName to unicode and uppercase */ | |
50c2f753 | 564 | if (ses->domainName) { |
1717ffc5 | 565 | len = strlen(ses->domainName); |
a8ee0344 | 566 | |
50c2f753 | 567 | domain = kmalloc(2 + (len * 2), GFP_KERNEL); |
307fbd31 | 568 | if (domain == NULL) { |
307fbd31 | 569 | rc = -ENOMEM; |
14cae324 | 570 | return rc; |
307fbd31 | 571 | } |
acbbb76a SF |
572 | len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len, |
573 | nls_cp); | |
14cae324 | 574 | rc = |
307fbd31 SP |
575 | crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, |
576 | (char *)domain, 2 * len); | |
1717ffc5 | 577 | kfree(domain); |
14cae324 | 578 | if (rc) { |
f96637be JP |
579 | cifs_dbg(VFS, "%s: Could not update with domain\n", |
580 | __func__); | |
14cae324 SP |
581 | return rc; |
582 | } | |
8b7a4544 SF |
583 | } else { |
584 | /* We use ses->serverName if no domain name available */ | |
307fbd31 SP |
585 | len = strlen(ses->serverName); |
586 | ||
587 | server = kmalloc(2 + (len * 2), GFP_KERNEL); | |
588 | if (server == NULL) { | |
307fbd31 | 589 | rc = -ENOMEM; |
14cae324 | 590 | return rc; |
307fbd31 | 591 | } |
acbbb76a | 592 | len = cifs_strtoUTF16((__le16 *)server, ses->serverName, len, |
307fbd31 | 593 | nls_cp); |
14cae324 | 594 | rc = |
307fbd31 SP |
595 | crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, |
596 | (char *)server, 2 * len); | |
597 | kfree(server); | |
14cae324 | 598 | if (rc) { |
f96637be JP |
599 | cifs_dbg(VFS, "%s: Could not update with server\n", |
600 | __func__); | |
14cae324 SP |
601 | return rc; |
602 | } | |
1717ffc5 | 603 | } |
307fbd31 SP |
604 | |
605 | rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, | |
d3686d54 | 606 | ntlmv2_hash); |
14cae324 | 607 | if (rc) |
f96637be | 608 | cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); |
307fbd31 | 609 | |
307fbd31 SP |
610 | return rc; |
611 | } | |
612 | ||
613 | static int | |
96daf2b0 | 614 | CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash) |
307fbd31 SP |
615 | { |
616 | int rc; | |
2c957ddf TG |
617 | struct ntlmv2_resp *ntlmv2 = (struct ntlmv2_resp *) |
618 | (ses->auth_key.response + CIFS_SESS_KEY_SIZE); | |
619 | unsigned int hash_len; | |
620 | ||
621 | /* The MD5 hash starts at challenge_key.key */ | |
622 | hash_len = ses->auth_key.len - (CIFS_SESS_KEY_SIZE + | |
623 | offsetof(struct ntlmv2_resp, challenge.key[0])); | |
307fbd31 SP |
624 | |
625 | if (!ses->server->secmech.sdeschmacmd5) { | |
f96637be | 626 | cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__); |
307fbd31 SP |
627 | return -1; |
628 | } | |
629 | ||
14cae324 | 630 | rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, |
2c957ddf | 631 | ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); |
14cae324 | 632 | if (rc) { |
f96637be JP |
633 | cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n", |
634 | __func__); | |
14cae324 SP |
635 | return rc; |
636 | } | |
307fbd31 SP |
637 | |
638 | rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); | |
639 | if (rc) { | |
f96637be | 640 | cifs_dbg(VFS, "%s: could not init hmacmd5\n", __func__); |
307fbd31 SP |
641 | return rc; |
642 | } | |
643 | ||
3f618223 | 644 | if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED) |
2c957ddf TG |
645 | memcpy(ntlmv2->challenge.key, |
646 | ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE); | |
d3ba50b1 | 647 | else |
2c957ddf TG |
648 | memcpy(ntlmv2->challenge.key, |
649 | ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE); | |
14cae324 | 650 | rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, |
2c957ddf | 651 | ntlmv2->challenge.key, hash_len); |
14cae324 | 652 | if (rc) { |
f96637be | 653 | cifs_dbg(VFS, "%s: Could not update with response\n", __func__); |
14cae324 SP |
654 | return rc; |
655 | } | |
307fbd31 | 656 | |
2c957ddf | 657 | /* Note that the MD5 digest over writes anon.challenge_key.key */ |
307fbd31 | 658 | rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, |
2c957ddf | 659 | ntlmv2->ntlmv2_hash); |
14cae324 | 660 | if (rc) |
f96637be | 661 | cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); |
9fbc5908 SF |
662 | |
663 | return rc; | |
664 | } | |
665 | ||
95dc8dd1 SF |
666 | static int crypto_hmacmd5_alloc(struct TCP_Server_Info *server) |
667 | { | |
ba482029 | 668 | int rc; |
95dc8dd1 SF |
669 | unsigned int size; |
670 | ||
671 | /* check if already allocated */ | |
672 | if (server->secmech.sdeschmacmd5) | |
673 | return 0; | |
674 | ||
675 | server->secmech.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0); | |
676 | if (IS_ERR(server->secmech.hmacmd5)) { | |
677 | cifs_dbg(VFS, "could not allocate crypto hmacmd5\n"); | |
ba482029 JL |
678 | rc = PTR_ERR(server->secmech.hmacmd5); |
679 | server->secmech.hmacmd5 = NULL; | |
680 | return rc; | |
95dc8dd1 SF |
681 | } |
682 | ||
683 | size = sizeof(struct shash_desc) + | |
684 | crypto_shash_descsize(server->secmech.hmacmd5); | |
685 | server->secmech.sdeschmacmd5 = kmalloc(size, GFP_KERNEL); | |
686 | if (!server->secmech.sdeschmacmd5) { | |
687 | crypto_free_shash(server->secmech.hmacmd5); | |
688 | server->secmech.hmacmd5 = NULL; | |
689 | return -ENOMEM; | |
690 | } | |
691 | server->secmech.sdeschmacmd5->shash.tfm = server->secmech.hmacmd5; | |
692 | server->secmech.sdeschmacmd5->shash.flags = 0x0; | |
693 | ||
694 | return 0; | |
695 | } | |
307fbd31 | 696 | |
2b149f11 | 697 | int |
96daf2b0 | 698 | setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) |
9fbc5908 | 699 | { |
c8e56f1f | 700 | int rc; |
21e73393 | 701 | int baselen; |
d3686d54 | 702 | unsigned int tilen; |
2c957ddf | 703 | struct ntlmv2_resp *ntlmv2; |
d3686d54 SP |
704 | char ntlmv2_hash[16]; |
705 | unsigned char *tiblob = NULL; /* target info blob */ | |
98ce94c8 | 706 | __le64 rsp_timestamp; |
6d027cfd | 707 | |
3f618223 | 708 | if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED) { |
2b149f11 | 709 | if (!ses->domainName) { |
39566443 GP |
710 | if (ses->domainAuto) { |
711 | rc = find_domain_name(ses, nls_cp); | |
712 | if (rc) { | |
713 | cifs_dbg(VFS, "error %d finding domain name\n", | |
714 | rc); | |
715 | goto setup_ntlmv2_rsp_ret; | |
716 | } | |
717 | } else { | |
718 | ses->domainName = kstrdup("", GFP_KERNEL); | |
2b149f11 SP |
719 | } |
720 | } | |
721 | } else { | |
9daa42e2 | 722 | rc = build_avpair_blob(ses, nls_cp); |
2b149f11 | 723 | if (rc) { |
f96637be | 724 | cifs_dbg(VFS, "error %d building av pair blob\n", rc); |
d3686d54 | 725 | goto setup_ntlmv2_rsp_ret; |
2b149f11 SP |
726 | } |
727 | } | |
a8ee0344 | 728 | |
98ce94c8 PS |
729 | /* Must be within 5 minutes of the server (or in range +/-2h |
730 | * in case of Mac OS X), so simply carry over server timestamp | |
731 | * (as Windows 7 does) | |
732 | */ | |
733 | rsp_timestamp = find_timestamp(ses); | |
734 | ||
21e73393 | 735 | baselen = CIFS_SESS_KEY_SIZE + sizeof(struct ntlmv2_resp); |
d3686d54 SP |
736 | tilen = ses->auth_key.len; |
737 | tiblob = ses->auth_key.response; | |
738 | ||
739 | ses->auth_key.response = kmalloc(baselen + tilen, GFP_KERNEL); | |
21e73393 | 740 | if (!ses->auth_key.response) { |
4b550af5 | 741 | rc = -ENOMEM; |
d3686d54 | 742 | ses->auth_key.len = 0; |
21e73393 SP |
743 | goto setup_ntlmv2_rsp_ret; |
744 | } | |
d3686d54 | 745 | ses->auth_key.len += baselen; |
21e73393 | 746 | |
2c957ddf | 747 | ntlmv2 = (struct ntlmv2_resp *) |
21e73393 | 748 | (ses->auth_key.response + CIFS_SESS_KEY_SIZE); |
2c957ddf TG |
749 | ntlmv2->blob_signature = cpu_to_le32(0x00000101); |
750 | ntlmv2->reserved = 0; | |
98ce94c8 PS |
751 | ntlmv2->time = rsp_timestamp; |
752 | ||
2c957ddf TG |
753 | get_random_bytes(&ntlmv2->client_chal, sizeof(ntlmv2->client_chal)); |
754 | ntlmv2->reserved2 = 0; | |
21e73393 | 755 | |
d3686d54 | 756 | memcpy(ses->auth_key.response + baselen, tiblob, tilen); |
21e73393 | 757 | |
bd975d1e RV |
758 | mutex_lock(&ses->server->srv_mutex); |
759 | ||
95dc8dd1 SF |
760 | rc = crypto_hmacmd5_alloc(ses->server); |
761 | if (rc) { | |
762 | cifs_dbg(VFS, "could not crypto alloc hmacmd5 rc %d\n", rc); | |
bd975d1e | 763 | goto unlock; |
95dc8dd1 SF |
764 | } |
765 | ||
f7c5445a | 766 | /* calculate ntlmv2_hash */ |
d3686d54 | 767 | rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp); |
2b149f11 | 768 | if (rc) { |
f96637be | 769 | cifs_dbg(VFS, "could not get v2 hash rc %d\n", rc); |
bd975d1e | 770 | goto unlock; |
2b149f11 | 771 | } |
f7c5445a SP |
772 | |
773 | /* calculate first part of the client response (CR1) */ | |
d3686d54 | 774 | rc = CalcNTLMv2_response(ses, ntlmv2_hash); |
307fbd31 | 775 | if (rc) { |
f96637be | 776 | cifs_dbg(VFS, "Could not calculate CR1 rc: %d\n", rc); |
bd975d1e | 777 | goto unlock; |
307fbd31 | 778 | } |
b609f06a | 779 | |
5d0d2882 | 780 | /* now calculate the session key for NTLMv2 */ |
14cae324 | 781 | rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, |
d3686d54 | 782 | ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE); |
14cae324 | 783 | if (rc) { |
f96637be JP |
784 | cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n", |
785 | __func__); | |
bd975d1e | 786 | goto unlock; |
14cae324 | 787 | } |
307fbd31 SP |
788 | |
789 | rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); | |
790 | if (rc) { | |
f96637be | 791 | cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__); |
bd975d1e | 792 | goto unlock; |
307fbd31 SP |
793 | } |
794 | ||
14cae324 | 795 | rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, |
2c957ddf | 796 | ntlmv2->ntlmv2_hash, |
307fbd31 | 797 | CIFS_HMAC_MD5_HASH_SIZE); |
14cae324 | 798 | if (rc) { |
f96637be | 799 | cifs_dbg(VFS, "%s: Could not update with response\n", __func__); |
bd975d1e | 800 | goto unlock; |
14cae324 | 801 | } |
307fbd31 SP |
802 | |
803 | rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, | |
804 | ses->auth_key.response); | |
14cae324 | 805 | if (rc) |
f96637be | 806 | cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); |
2b149f11 | 807 | |
bd975d1e RV |
808 | unlock: |
809 | mutex_unlock(&ses->server->srv_mutex); | |
2b149f11 | 810 | setup_ntlmv2_rsp_ret: |
d3686d54 | 811 | kfree(tiblob); |
2b149f11 SP |
812 | |
813 | return rc; | |
6d027cfd SF |
814 | } |
815 | ||
d2b91521 | 816 | int |
96daf2b0 | 817 | calc_seckey(struct cifs_ses *ses) |
d2b91521 SP |
818 | { |
819 | int rc; | |
9651ddba | 820 | struct crypto_skcipher *tfm_arc4; |
d2b91521 | 821 | struct scatterlist sgin, sgout; |
9651ddba | 822 | struct skcipher_request *req; |
5f4b5569 SP |
823 | unsigned char *sec_key; |
824 | ||
825 | sec_key = kmalloc(CIFS_SESS_KEY_SIZE, GFP_KERNEL); | |
826 | if (sec_key == NULL) | |
827 | return -ENOMEM; | |
d2b91521 SP |
828 | |
829 | get_random_bytes(sec_key, CIFS_SESS_KEY_SIZE); | |
830 | ||
9651ddba | 831 | tfm_arc4 = crypto_alloc_skcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); |
7a8587e7 SP |
832 | if (IS_ERR(tfm_arc4)) { |
833 | rc = PTR_ERR(tfm_arc4); | |
f96637be | 834 | cifs_dbg(VFS, "could not allocate crypto API arc4\n"); |
5f4b5569 | 835 | goto out; |
d2b91521 SP |
836 | } |
837 | ||
9651ddba | 838 | rc = crypto_skcipher_setkey(tfm_arc4, ses->auth_key.response, |
d2b91521 | 839 | CIFS_SESS_KEY_SIZE); |
14cae324 | 840 | if (rc) { |
f96637be JP |
841 | cifs_dbg(VFS, "%s: Could not set response as a key\n", |
842 | __func__); | |
9651ddba HX |
843 | goto out_free_cipher; |
844 | } | |
845 | ||
846 | req = skcipher_request_alloc(tfm_arc4, GFP_KERNEL); | |
847 | if (!req) { | |
848 | rc = -ENOMEM; | |
849 | cifs_dbg(VFS, "could not allocate crypto API arc4 request\n"); | |
850 | goto out_free_cipher; | |
14cae324 | 851 | } |
d2b91521 SP |
852 | |
853 | sg_init_one(&sgin, sec_key, CIFS_SESS_KEY_SIZE); | |
d3686d54 | 854 | sg_init_one(&sgout, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE); |
d2b91521 | 855 | |
9651ddba HX |
856 | skcipher_request_set_callback(req, 0, NULL, NULL); |
857 | skcipher_request_set_crypt(req, &sgin, &sgout, CIFS_CPHTXT_SIZE, NULL); | |
858 | ||
859 | rc = crypto_skcipher_encrypt(req); | |
860 | skcipher_request_free(req); | |
d2b91521 | 861 | if (rc) { |
f96637be | 862 | cifs_dbg(VFS, "could not encrypt session key rc: %d\n", rc); |
9651ddba | 863 | goto out_free_cipher; |
d2b91521 SP |
864 | } |
865 | ||
866 | /* make secondary_key/nonce as session key */ | |
867 | memcpy(ses->auth_key.response, sec_key, CIFS_SESS_KEY_SIZE); | |
868 | /* and make len as that of session key only */ | |
869 | ses->auth_key.len = CIFS_SESS_KEY_SIZE; | |
870 | ||
9651ddba HX |
871 | out_free_cipher: |
872 | crypto_free_skcipher(tfm_arc4); | |
5f4b5569 SP |
873 | out: |
874 | kfree(sec_key); | |
14cae324 | 875 | return rc; |
d2b91521 SP |
876 | } |
877 | ||
878 | void | |
026e93dc | 879 | cifs_crypto_secmech_release(struct TCP_Server_Info *server) |
d2b91521 | 880 | { |
95dc8dd1 | 881 | if (server->secmech.cmacaes) { |
429b46f4 | 882 | crypto_free_shash(server->secmech.cmacaes); |
95dc8dd1 SF |
883 | server->secmech.cmacaes = NULL; |
884 | } | |
429b46f4 | 885 | |
95dc8dd1 | 886 | if (server->secmech.hmacsha256) { |
3c1bf7e4 | 887 | crypto_free_shash(server->secmech.hmacsha256); |
95dc8dd1 SF |
888 | server->secmech.hmacsha256 = NULL; |
889 | } | |
3c1bf7e4 | 890 | |
95dc8dd1 | 891 | if (server->secmech.md5) { |
d2b91521 | 892 | crypto_free_shash(server->secmech.md5); |
95dc8dd1 SF |
893 | server->secmech.md5 = NULL; |
894 | } | |
d2b91521 | 895 | |
95dc8dd1 | 896 | if (server->secmech.hmacmd5) { |
d2b91521 | 897 | crypto_free_shash(server->secmech.hmacmd5); |
95dc8dd1 SF |
898 | server->secmech.hmacmd5 = NULL; |
899 | } | |
d2b91521 | 900 | |
026e93dc PS |
901 | if (server->secmech.ccmaesencrypt) { |
902 | crypto_free_aead(server->secmech.ccmaesencrypt); | |
903 | server->secmech.ccmaesencrypt = NULL; | |
904 | } | |
905 | ||
906 | if (server->secmech.ccmaesdecrypt) { | |
907 | crypto_free_aead(server->secmech.ccmaesdecrypt); | |
908 | server->secmech.ccmaesdecrypt = NULL; | |
909 | } | |
910 | ||
429b46f4 | 911 | kfree(server->secmech.sdesccmacaes); |
95dc8dd1 | 912 | server->secmech.sdesccmacaes = NULL; |
3c1bf7e4 | 913 | kfree(server->secmech.sdeschmacsha256); |
95dc8dd1 | 914 | server->secmech.sdeschmacsha256 = NULL; |
d2b91521 | 915 | kfree(server->secmech.sdeschmacmd5); |
95dc8dd1 | 916 | server->secmech.sdeschmacmd5 = NULL; |
d2b91521 | 917 | kfree(server->secmech.sdescmd5); |
95dc8dd1 | 918 | server->secmech.sdescmd5 = NULL; |
d2b91521 | 919 | } |