Blame view
crypto/blkcipher.c
15.1 KB
5cde0af2a [CRYPTO] cipher: ... |
1 2 |
/* * Block chaining cipher operations. |
d8c34b949 crypto: Replaced ... |
3 |
* |
5cde0af2a [CRYPTO] cipher: ... |
4 5 6 7 8 9 10 11 |
* Generic encrypt/decrypt wrapper for ciphers, handles operations across * multiple page boundaries by using temporary blocks. In user context, * the kernel is given a chance to schedule us once per page. * * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free |
d8c34b949 crypto: Replaced ... |
12 |
* Software Foundation; either version 2 of the License, or (at your option) |
5cde0af2a [CRYPTO] cipher: ... |
13 14 15 |
* any later version. * */ |
d1a2fd500 crypto: blkcipher... |
16 |
#include <crypto/aead.h> |
ecfc43292 [CRYPTO] skcipher... |
17 |
#include <crypto/internal/skcipher.h> |
42c271c6c [CRYPTO] scatterw... |
18 |
#include <crypto/scatterwalk.h> |
5cde0af2a [CRYPTO] cipher: ... |
19 |
#include <linux/errno.h> |
fb469840b [CRYPTO] all: Che... |
20 |
#include <linux/hardirq.h> |
5cde0af2a [CRYPTO] cipher: ... |
21 |
#include <linux/kernel.h> |
5cde0af2a [CRYPTO] cipher: ... |
22 |
#include <linux/module.h> |
5cde0af2a [CRYPTO] cipher: ... |
23 24 25 |
#include <linux/seq_file.h> #include <linux/slab.h> #include <linux/string.h> |
50496a1fa crypto: Add users... |
26 |
#include <linux/cryptouser.h> |
d8c34b949 crypto: Replaced ... |
27 |
#include <linux/compiler.h> |
50496a1fa crypto: Add users... |
28 |
#include <net/netlink.h> |
5cde0af2a [CRYPTO] cipher: ... |
29 30 |
#include "internal.h" |
5cde0af2a [CRYPTO] cipher: ... |
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 |
enum { BLKCIPHER_WALK_PHYS = 1 << 0, BLKCIPHER_WALK_SLOW = 1 << 1, BLKCIPHER_WALK_COPY = 1 << 2, BLKCIPHER_WALK_DIFF = 1 << 3, }; static int blkcipher_walk_next(struct blkcipher_desc *desc, struct blkcipher_walk *walk); static int blkcipher_walk_first(struct blkcipher_desc *desc, struct blkcipher_walk *walk); static inline void blkcipher_map_src(struct blkcipher_walk *walk) { |
f0dfc0b0b crypto: remove th... |
46 |
walk->src.virt.addr = scatterwalk_map(&walk->in); |
5cde0af2a [CRYPTO] cipher: ... |
47 48 49 50 |
} static inline void blkcipher_map_dst(struct blkcipher_walk *walk) { |
f0dfc0b0b crypto: remove th... |
51 |
walk->dst.virt.addr = scatterwalk_map(&walk->out); |
5cde0af2a [CRYPTO] cipher: ... |
52 53 54 55 |
} static inline void blkcipher_unmap_src(struct blkcipher_walk *walk) { |
f0dfc0b0b crypto: remove th... |
56 |
scatterwalk_unmap(walk->src.virt.addr); |
5cde0af2a [CRYPTO] cipher: ... |
57 58 59 60 |
} static inline void blkcipher_unmap_dst(struct blkcipher_walk *walk) { |
f0dfc0b0b crypto: remove th... |
61 |
scatterwalk_unmap(walk->dst.virt.addr); |
5cde0af2a [CRYPTO] cipher: ... |
62 |
} |
e4630f9fd [CRYPTO] blkciphe... |
63 64 65 |
/* Get a spot of the specified length that does not straddle a page. * The caller needs to ensure that there is enough space for this operation. */ |
5cde0af2a [CRYPTO] cipher: ... |
66 67 |
static inline u8 *blkcipher_get_spot(u8 *start, unsigned int len) { |
e4630f9fd [CRYPTO] blkciphe... |
68 |
u8 *end_page = (u8 *)(((unsigned long)(start + len - 1)) & PAGE_MASK); |
5aaff0c8f [CRYPTO] blkciphe... |
69 |
return max(start, end_page); |
5cde0af2a [CRYPTO] cipher: ... |
70 |
} |
2cde72d94 crypto: blkcipher... |
71 72 |
static inline void blkcipher_done_slow(struct blkcipher_walk *walk, unsigned int bsize) |
5cde0af2a [CRYPTO] cipher: ... |
73 74 |
{ u8 *addr; |
5cde0af2a [CRYPTO] cipher: ... |
75 |
|
822be00fe crypto: remove di... |
76 |
addr = (u8 *)ALIGN((unsigned long)walk->buffer, walk->alignmask + 1); |
5cde0af2a [CRYPTO] cipher: ... |
77 78 |
addr = blkcipher_get_spot(addr, bsize); scatterwalk_copychunks(addr, &walk->out, bsize, 1); |
5cde0af2a [CRYPTO] cipher: ... |
79 |
} |
2cde72d94 crypto: blkcipher... |
80 81 |
static inline void blkcipher_done_fast(struct blkcipher_walk *walk, unsigned int n) |
5cde0af2a [CRYPTO] cipher: ... |
82 |
{ |
5cde0af2a [CRYPTO] cipher: ... |
83 84 85 86 87 |
if (walk->flags & BLKCIPHER_WALK_COPY) { blkcipher_map_dst(walk); memcpy(walk->dst.virt.addr, walk->page, n); blkcipher_unmap_dst(walk); } else if (!(walk->flags & BLKCIPHER_WALK_PHYS)) { |
5cde0af2a [CRYPTO] cipher: ... |
88 89 |
if (walk->flags & BLKCIPHER_WALK_DIFF) blkcipher_unmap_dst(walk); |
61ecdb801 mm: strictly nest... |
90 |
blkcipher_unmap_src(walk); |
5cde0af2a [CRYPTO] cipher: ... |
91 92 93 94 |
} scatterwalk_advance(&walk->in, n); scatterwalk_advance(&walk->out, n); |
5cde0af2a [CRYPTO] cipher: ... |
95 96 97 98 99 |
} int blkcipher_walk_done(struct blkcipher_desc *desc, struct blkcipher_walk *walk, int err) { |
2cde72d94 crypto: blkcipher... |
100 101 |
unsigned int n; /* bytes processed */ bool more; |
5cde0af2a [CRYPTO] cipher: ... |
102 |
|
2cde72d94 crypto: blkcipher... |
103 104 |
if (unlikely(err < 0)) goto finish; |
5cde0af2a [CRYPTO] cipher: ... |
105 |
|
2cde72d94 crypto: blkcipher... |
106 107 108 |
n = walk->nbytes - err; walk->total -= n; more = (walk->total != 0); |
5cde0af2a [CRYPTO] cipher: ... |
109 |
|
2cde72d94 crypto: blkcipher... |
110 111 112 113 114 115 116 117 118 |
if (likely(!(walk->flags & BLKCIPHER_WALK_SLOW))) { blkcipher_done_fast(walk, n); } else { if (WARN_ON(err)) { /* unexpected case; didn't process all bytes */ err = -EINVAL; goto finish; } blkcipher_done_slow(walk, n); |
5cde0af2a [CRYPTO] cipher: ... |
119 |
} |
2cde72d94 crypto: blkcipher... |
120 121 |
scatterwalk_done(&walk->in, 0, more); scatterwalk_done(&walk->out, 1, more); |
5cde0af2a [CRYPTO] cipher: ... |
122 |
|
2cde72d94 crypto: blkcipher... |
123 |
if (more) { |
5cde0af2a [CRYPTO] cipher: ... |
124 125 126 |
crypto_yield(desc->flags); return blkcipher_walk_next(desc, walk); } |
2cde72d94 crypto: blkcipher... |
127 128 129 |
err = 0; finish: walk->nbytes = 0; |
5cde0af2a [CRYPTO] cipher: ... |
130 |
if (walk->iv != desc->info) |
822be00fe crypto: remove di... |
131 |
memcpy(desc->info, walk->iv, walk->ivsize); |
5cde0af2a [CRYPTO] cipher: ... |
132 133 134 135 |
if (walk->buffer != walk->page) kfree(walk->buffer); if (walk->page) free_page((unsigned long)walk->page); |
5cde0af2a [CRYPTO] cipher: ... |
136 137 138 139 140 141 142 143 144 145 |
return err; } EXPORT_SYMBOL_GPL(blkcipher_walk_done); static inline int blkcipher_next_slow(struct blkcipher_desc *desc, struct blkcipher_walk *walk, unsigned int bsize, unsigned int alignmask) { unsigned int n; |
70613783f [CRYPTO] blkciphe... |
146 |
unsigned aligned_bsize = ALIGN(bsize, alignmask + 1); |
5cde0af2a [CRYPTO] cipher: ... |
147 148 149 150 151 152 153 |
if (walk->buffer) goto ok; walk->buffer = walk->page; if (walk->buffer) goto ok; |
2614de1b9 [CRYPTO] blkciphe... |
154 |
n = aligned_bsize * 3 - (alignmask + 1) + |
e4630f9fd [CRYPTO] blkciphe... |
155 |
(alignmask & ~(crypto_tfm_ctx_alignment() - 1)); |
5cde0af2a [CRYPTO] cipher: ... |
156 157 158 159 160 161 162 163 |
walk->buffer = kmalloc(n, GFP_ATOMIC); if (!walk->buffer) return blkcipher_walk_done(desc, walk, -ENOMEM); ok: walk->dst.virt.addr = (u8 *)ALIGN((unsigned long)walk->buffer, alignmask + 1); walk->dst.virt.addr = blkcipher_get_spot(walk->dst.virt.addr, bsize); |
70613783f [CRYPTO] blkciphe... |
164 165 |
walk->src.virt.addr = blkcipher_get_spot(walk->dst.virt.addr + aligned_bsize, bsize); |
5cde0af2a [CRYPTO] cipher: ... |
166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 |
scatterwalk_copychunks(walk->src.virt.addr, &walk->in, bsize, 0); walk->nbytes = bsize; walk->flags |= BLKCIPHER_WALK_SLOW; return 0; } static inline int blkcipher_next_copy(struct blkcipher_walk *walk) { u8 *tmp = walk->page; blkcipher_map_src(walk); memcpy(tmp, walk->src.virt.addr, walk->nbytes); blkcipher_unmap_src(walk); walk->src.virt.addr = tmp; walk->dst.virt.addr = tmp; return 0; } static inline int blkcipher_next_fast(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { unsigned long diff; walk->src.phys.page = scatterwalk_page(&walk->in); walk->src.phys.offset = offset_in_page(walk->in.offset); walk->dst.phys.page = scatterwalk_page(&walk->out); walk->dst.phys.offset = offset_in_page(walk->out.offset); if (walk->flags & BLKCIPHER_WALK_PHYS) return 0; diff = walk->src.phys.offset - walk->dst.phys.offset; diff |= walk->src.virt.page - walk->dst.virt.page; blkcipher_map_src(walk); walk->dst.virt.addr = walk->src.virt.addr; if (diff) { walk->flags |= BLKCIPHER_WALK_DIFF; blkcipher_map_dst(walk); } return 0; } static int blkcipher_walk_next(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { |
7607bd8ff [CRYPTO] blkciphe... |
219 |
unsigned int bsize; |
5cde0af2a [CRYPTO] cipher: ... |
220 221 222 223 |
unsigned int n; int err; n = walk->total; |
822be00fe crypto: remove di... |
224 |
if (unlikely(n < walk->cipher_blocksize)) { |
5cde0af2a [CRYPTO] cipher: ... |
225 226 227 |
desc->flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN; return blkcipher_walk_done(desc, walk, -EINVAL); } |
acdb04d0b crypto: skcipher ... |
228 |
bsize = min(walk->walk_blocksize, n); |
5cde0af2a [CRYPTO] cipher: ... |
229 230 |
walk->flags &= ~(BLKCIPHER_WALK_SLOW | BLKCIPHER_WALK_COPY | BLKCIPHER_WALK_DIFF); |
822be00fe crypto: remove di... |
231 232 |
if (!scatterwalk_aligned(&walk->in, walk->alignmask) || !scatterwalk_aligned(&walk->out, walk->alignmask)) { |
5cde0af2a [CRYPTO] cipher: ... |
233 234 235 236 237 238 239 240 241 242 243 244 |
walk->flags |= BLKCIPHER_WALK_COPY; if (!walk->page) { walk->page = (void *)__get_free_page(GFP_ATOMIC); if (!walk->page) n = 0; } } n = scatterwalk_clamp(&walk->in, n); n = scatterwalk_clamp(&walk->out, n); if (unlikely(n < bsize)) { |
822be00fe crypto: remove di... |
245 |
err = blkcipher_next_slow(desc, walk, bsize, walk->alignmask); |
5cde0af2a [CRYPTO] cipher: ... |
246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 |
goto set_phys_lowmem; } walk->nbytes = n; if (walk->flags & BLKCIPHER_WALK_COPY) { err = blkcipher_next_copy(walk); goto set_phys_lowmem; } return blkcipher_next_fast(desc, walk); set_phys_lowmem: if (walk->flags & BLKCIPHER_WALK_PHYS) { walk->src.phys.page = virt_to_page(walk->src.virt.addr); walk->dst.phys.page = virt_to_page(walk->dst.virt.addr); walk->src.phys.offset &= PAGE_SIZE - 1; walk->dst.phys.offset &= PAGE_SIZE - 1; } return err; } |
822be00fe crypto: remove di... |
266 |
static inline int blkcipher_copy_iv(struct blkcipher_walk *walk) |
5cde0af2a [CRYPTO] cipher: ... |
267 |
{ |
822be00fe crypto: remove di... |
268 269 270 271 272 |
unsigned bs = walk->walk_blocksize; unsigned aligned_bs = ALIGN(bs, walk->alignmask + 1); unsigned int size = aligned_bs * 2 + walk->ivsize + max(aligned_bs, walk->ivsize) - (walk->alignmask + 1); |
5cde0af2a [CRYPTO] cipher: ... |
273 |
u8 *iv; |
822be00fe crypto: remove di... |
274 |
size += walk->alignmask & ~(crypto_tfm_ctx_alignment() - 1); |
5cde0af2a [CRYPTO] cipher: ... |
275 276 277 |
walk->buffer = kmalloc(size, GFP_ATOMIC); if (!walk->buffer) return -ENOMEM; |
822be00fe crypto: remove di... |
278 |
iv = (u8 *)ALIGN((unsigned long)walk->buffer, walk->alignmask + 1); |
70613783f [CRYPTO] blkciphe... |
279 280 |
iv = blkcipher_get_spot(iv, bs) + aligned_bs; iv = blkcipher_get_spot(iv, bs) + aligned_bs; |
822be00fe crypto: remove di... |
281 |
iv = blkcipher_get_spot(iv, walk->ivsize); |
5cde0af2a [CRYPTO] cipher: ... |
282 |
|
822be00fe crypto: remove di... |
283 |
walk->iv = memcpy(iv, walk->iv, walk->ivsize); |
5cde0af2a [CRYPTO] cipher: ... |
284 285 286 287 288 289 290 |
return 0; } int blkcipher_walk_virt(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { walk->flags &= ~BLKCIPHER_WALK_PHYS; |
822be00fe crypto: remove di... |
291 292 293 294 |
walk->walk_blocksize = crypto_blkcipher_blocksize(desc->tfm); walk->cipher_blocksize = walk->walk_blocksize; walk->ivsize = crypto_blkcipher_ivsize(desc->tfm); walk->alignmask = crypto_blkcipher_alignmask(desc->tfm); |
5cde0af2a [CRYPTO] cipher: ... |
295 296 297 298 299 300 301 302 |
return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_walk_virt); int blkcipher_walk_phys(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { walk->flags |= BLKCIPHER_WALK_PHYS; |
822be00fe crypto: remove di... |
303 304 305 306 |
walk->walk_blocksize = crypto_blkcipher_blocksize(desc->tfm); walk->cipher_blocksize = walk->walk_blocksize; walk->ivsize = crypto_blkcipher_ivsize(desc->tfm); walk->alignmask = crypto_blkcipher_alignmask(desc->tfm); |
5cde0af2a [CRYPTO] cipher: ... |
307 308 309 310 311 312 313 |
return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_walk_phys); static int blkcipher_walk_first(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { |
fb469840b [CRYPTO] all: Che... |
314 315 |
if (WARN_ON_ONCE(in_irq())) return -EDEADLK; |
70d906bc1 crypto: skcipher ... |
316 |
walk->iv = desc->info; |
5cde0af2a [CRYPTO] cipher: ... |
317 318 319 320 321 |
walk->nbytes = walk->total; if (unlikely(!walk->total)) return 0; walk->buffer = NULL; |
822be00fe crypto: remove di... |
322 323 |
if (unlikely(((unsigned long)walk->iv & walk->alignmask))) { int err = blkcipher_copy_iv(walk); |
5cde0af2a [CRYPTO] cipher: ... |
324 325 326 327 328 329 330 331 332 333 |
if (err) return err; } scatterwalk_start(&walk->in, walk->in.sg); scatterwalk_start(&walk->out, walk->out.sg); walk->page = NULL; return blkcipher_walk_next(desc, walk); } |
7607bd8ff [CRYPTO] blkciphe... |
334 335 336 337 338 |
int blkcipher_walk_virt_block(struct blkcipher_desc *desc, struct blkcipher_walk *walk, unsigned int blocksize) { walk->flags &= ~BLKCIPHER_WALK_PHYS; |
822be00fe crypto: remove di... |
339 340 341 342 |
walk->walk_blocksize = blocksize; walk->cipher_blocksize = crypto_blkcipher_blocksize(desc->tfm); walk->ivsize = crypto_blkcipher_ivsize(desc->tfm); walk->alignmask = crypto_blkcipher_alignmask(desc->tfm); |
7607bd8ff [CRYPTO] blkciphe... |
343 344 345 |
return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_walk_virt_block); |
4f7f1d7cf crypto: allow blk... |
346 347 348 349 350 351 352 353 354 355 356 357 358 |
int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc, struct blkcipher_walk *walk, struct crypto_aead *tfm, unsigned int blocksize) { walk->flags &= ~BLKCIPHER_WALK_PHYS; walk->walk_blocksize = blocksize; walk->cipher_blocksize = crypto_aead_blocksize(tfm); walk->ivsize = crypto_aead_ivsize(tfm); walk->alignmask = crypto_aead_alignmask(tfm); return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_aead_walk_virt_block); |
791b4d5f7 [CRYPTO] api: Add... |
359 360 |
static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) |
ca7c39385 [CRYPTO] api: Han... |
361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 |
{ struct blkcipher_alg *cipher = &tfm->__crt_alg->cra_blkcipher; unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); int ret; u8 *buffer, *alignbuffer; unsigned long absize; absize = keylen + alignmask; buffer = kmalloc(absize, GFP_ATOMIC); if (!buffer) return -ENOMEM; alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); ret = cipher->setkey(tfm, alignbuffer, keylen); |
068171767 [CRYPTO] api: fix... |
376 |
memset(alignbuffer, 0, keylen); |
ca7c39385 [CRYPTO] api: Han... |
377 378 379 |
kfree(buffer); return ret; } |
791b4d5f7 [CRYPTO] api: Add... |
380 |
static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) |
5cde0af2a [CRYPTO] cipher: ... |
381 382 |
{ struct blkcipher_alg *cipher = &tfm->__crt_alg->cra_blkcipher; |
ca7c39385 [CRYPTO] api: Han... |
383 |
unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); |
5cde0af2a [CRYPTO] cipher: ... |
384 385 386 387 388 |
if (keylen < cipher->min_keysize || keylen > cipher->max_keysize) { tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; return -EINVAL; } |
ca7c39385 [CRYPTO] api: Han... |
389 390 |
if ((unsigned long)key & alignmask) return setkey_unaligned(tfm, key, keylen); |
5cde0af2a [CRYPTO] cipher: ... |
391 392 |
return cipher->setkey(tfm, key, keylen); } |
32e3983fe [CRYPTO] api: Add... |
393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 |
static int async_setkey(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int keylen) { return setkey(crypto_ablkcipher_tfm(tfm), key, keylen); } static int async_encrypt(struct ablkcipher_request *req) { struct crypto_tfm *tfm = req->base.tfm; struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; struct blkcipher_desc desc = { .tfm = __crypto_blkcipher_cast(tfm), .info = req->info, .flags = req->base.flags, }; return alg->encrypt(&desc, req->dst, req->src, req->nbytes); } static int async_decrypt(struct ablkcipher_request *req) { struct crypto_tfm *tfm = req->base.tfm; struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; struct blkcipher_desc desc = { .tfm = __crypto_blkcipher_cast(tfm), .info = req->info, .flags = req->base.flags, }; return alg->decrypt(&desc, req->dst, req->src, req->nbytes); } |
27d2a3300 [CRYPTO] api: All... |
425 426 |
static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg, u32 type, u32 mask) |
5cde0af2a [CRYPTO] cipher: ... |
427 428 429 |
{ struct blkcipher_alg *cipher = &alg->cra_blkcipher; unsigned int len = alg->cra_ctxsize; |
332f8840f [CRYPTO] ablkciph... |
430 431 |
if ((mask & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_MASK && cipher->ivsize) { |
5cde0af2a [CRYPTO] cipher: ... |
432 433 434 435 436 437 |
len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1); len += cipher->ivsize; } return len; } |
32e3983fe [CRYPTO] api: Add... |
438 439 440 441 442 443 444 445 |
static int crypto_init_blkcipher_ops_async(struct crypto_tfm *tfm) { struct ablkcipher_tfm *crt = &tfm->crt_ablkcipher; struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; crt->setkey = async_setkey; crt->encrypt = async_encrypt; crt->decrypt = async_decrypt; |
ecfc43292 [CRYPTO] skcipher... |
446 |
crt->base = __crypto_ablkcipher_cast(tfm); |
32e3983fe [CRYPTO] api: Add... |
447 448 449 450 451 452 |
crt->ivsize = alg->ivsize; return 0; } static int crypto_init_blkcipher_ops_sync(struct crypto_tfm *tfm) |
5cde0af2a [CRYPTO] cipher: ... |
453 454 455 456 457 |
{ struct blkcipher_tfm *crt = &tfm->crt_blkcipher; struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; unsigned long align = crypto_tfm_alg_alignmask(tfm) + 1; unsigned long addr; |
5cde0af2a [CRYPTO] cipher: ... |
458 459 460 461 462 463 464 465 466 467 468 |
crt->setkey = setkey; crt->encrypt = alg->encrypt; crt->decrypt = alg->decrypt; addr = (unsigned long)crypto_tfm_ctx(tfm); addr = ALIGN(addr, align); addr += ALIGN(tfm->__crt_alg->cra_ctxsize, align); crt->iv = (void *)addr; return 0; } |
32e3983fe [CRYPTO] api: Add... |
469 470 471 472 473 474 |
static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask) { struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; if (alg->ivsize > PAGE_SIZE / 8) return -EINVAL; |
332f8840f [CRYPTO] ablkciph... |
475 |
if ((mask & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_MASK) |
32e3983fe [CRYPTO] api: Add... |
476 477 478 479 |
return crypto_init_blkcipher_ops_sync(tfm); else return crypto_init_blkcipher_ops_async(tfm); } |
3acc84739 crypto: algapi - ... |
480 |
#ifdef CONFIG_NET |
50496a1fa crypto: Add users... |
481 482 483 |
static int crypto_blkcipher_report(struct sk_buff *skb, struct crypto_alg *alg) { struct crypto_report_blkcipher rblkcipher; |
9a5467bf7 crypto: user - fi... |
484 485 486 |
strncpy(rblkcipher.type, "blkcipher", sizeof(rblkcipher.type)); strncpy(rblkcipher.geniv, alg->cra_blkcipher.geniv ?: "<default>", sizeof(rblkcipher.geniv)); |
29db27723 crypto: skcipher ... |
487 |
rblkcipher.geniv[sizeof(rblkcipher.geniv) - 1] = '\0'; |
50496a1fa crypto: Add users... |
488 489 490 491 492 |
rblkcipher.blocksize = alg->cra_blocksize; rblkcipher.min_keysize = alg->cra_blkcipher.min_keysize; rblkcipher.max_keysize = alg->cra_blkcipher.max_keysize; rblkcipher.ivsize = alg->cra_blkcipher.ivsize; |
6662df33f crypto: Stop usin... |
493 494 495 |
if (nla_put(skb, CRYPTOCFGA_REPORT_BLKCIPHER, sizeof(struct crypto_report_blkcipher), &rblkcipher)) goto nla_put_failure; |
50496a1fa crypto: Add users... |
496 497 498 499 500 |
return 0; nla_put_failure: return -EMSGSIZE; } |
3acc84739 crypto: algapi - ... |
501 502 503 504 505 506 |
#else static int crypto_blkcipher_report(struct sk_buff *skb, struct crypto_alg *alg) { return -ENOSYS; } #endif |
50496a1fa crypto: Add users... |
507 |
|
5cde0af2a [CRYPTO] cipher: ... |
508 |
static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg) |
d8c34b949 crypto: Replaced ... |
509 |
__maybe_unused; |
5cde0af2a [CRYPTO] cipher: ... |
510 511 512 513 514 515 516 517 518 519 520 521 |
static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg) { seq_printf(m, "type : blkcipher "); seq_printf(m, "blocksize : %u ", alg->cra_blocksize); seq_printf(m, "min keysize : %u ", alg->cra_blkcipher.min_keysize); seq_printf(m, "max keysize : %u ", alg->cra_blkcipher.max_keysize); seq_printf(m, "ivsize : %u ", alg->cra_blkcipher.ivsize); |
23508e11a [CRYPTO] skcipher... |
522 523 524 |
seq_printf(m, "geniv : %s ", alg->cra_blkcipher.geniv ?: "<default>"); |
5cde0af2a [CRYPTO] cipher: ... |
525 526 527 528 529 530 531 532 |
} const struct crypto_type crypto_blkcipher_type = { .ctxsize = crypto_blkcipher_ctxsize, .init = crypto_init_blkcipher_ops, #ifdef CONFIG_PROC_FS .show = crypto_blkcipher_show, #endif |
50496a1fa crypto: Add users... |
533 |
.report = crypto_blkcipher_report, |
5cde0af2a [CRYPTO] cipher: ... |
534 535 536 537 538 |
}; EXPORT_SYMBOL_GPL(crypto_blkcipher_type); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Generic block chaining cipher type"); |