aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorJussi Kivilinna <jussi.kivilinna@iki.fi>2014-06-09 13:59:54 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2014-06-20 09:27:58 -0400
commit6574e6c64e971c9adb629e81e497afdb52b1c9df (patch)
treeacfe43924f1dd49e686508b4359eccf4d857bbef /arch
parent87131507e1a60c4803d54816b86091490b67ad68 (diff)
crypto: des_3des - add x86-64 assembly implementation
Patch adds x86_64 assembly implementation of Triple DES EDE cipher algorithm. Two assembly implementations are provided. First is regular 'one-block at time' encrypt/decrypt function. Second is 'three-blocks at time' function that gains performance increase on out-of-order CPUs. tcrypt test results: Intel Core i5-4570: des3_ede-asm vs des3_ede-generic: size ecb-enc ecb-dec cbc-enc cbc-dec ctr-enc ctr-dec 16B 1.21x 1.22x 1.27x 1.36x 1.25x 1.25x 64B 1.98x 1.96x 1.23x 2.04x 2.01x 2.00x 256B 2.34x 2.37x 1.21x 2.40x 2.38x 2.39x 1024B 2.50x 2.47x 1.22x 2.51x 2.52x 2.51x 8192B 2.51x 2.53x 1.21x 2.56x 2.54x 2.55x Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/crypto/Makefile2
-rw-r--r--arch/x86/crypto/des3_ede-asm_64.S805
-rw-r--r--arch/x86/crypto/des3_ede_glue.c509
3 files changed, 1316 insertions, 0 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 61d6e281898b..a470de25570f 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_CRYPTO_SALSA20_586) += salsa20-i586.o
14obj-$(CONFIG_CRYPTO_SERPENT_SSE2_586) += serpent-sse2-i586.o 14obj-$(CONFIG_CRYPTO_SERPENT_SSE2_586) += serpent-sse2-i586.o
15 15
16obj-$(CONFIG_CRYPTO_AES_X86_64) += aes-x86_64.o 16obj-$(CONFIG_CRYPTO_AES_X86_64) += aes-x86_64.o
17obj-$(CONFIG_CRYPTO_DES3_EDE_X86_64) += des3_ede-x86_64.o
17obj-$(CONFIG_CRYPTO_CAMELLIA_X86_64) += camellia-x86_64.o 18obj-$(CONFIG_CRYPTO_CAMELLIA_X86_64) += camellia-x86_64.o
18obj-$(CONFIG_CRYPTO_BLOWFISH_X86_64) += blowfish-x86_64.o 19obj-$(CONFIG_CRYPTO_BLOWFISH_X86_64) += blowfish-x86_64.o
19obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o 20obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o
@@ -52,6 +53,7 @@ salsa20-i586-y := salsa20-i586-asm_32.o salsa20_glue.o
52serpent-sse2-i586-y := serpent-sse2-i586-asm_32.o serpent_sse2_glue.o 53serpent-sse2-i586-y := serpent-sse2-i586-asm_32.o serpent_sse2_glue.o
53 54
54aes-x86_64-y := aes-x86_64-asm_64.o aes_glue.o 55aes-x86_64-y := aes-x86_64-asm_64.o aes_glue.o
56des3_ede-x86_64-y := des3_ede-asm_64.o des3_ede_glue.o
55camellia-x86_64-y := camellia-x86_64-asm_64.o camellia_glue.o 57camellia-x86_64-y := camellia-x86_64-asm_64.o camellia_glue.o
56blowfish-x86_64-y := blowfish-x86_64-asm_64.o blowfish_glue.o 58blowfish-x86_64-y := blowfish-x86_64-asm_64.o blowfish_glue.o
57twofish-x86_64-y := twofish-x86_64-asm_64.o twofish_glue.o 59twofish-x86_64-y := twofish-x86_64-asm_64.o twofish_glue.o
diff --git a/arch/x86/crypto/des3_ede-asm_64.S b/arch/x86/crypto/des3_ede-asm_64.S
new file mode 100644
index 000000000000..038f6ae87c5e
--- /dev/null
+++ b/arch/x86/crypto/des3_ede-asm_64.S
@@ -0,0 +1,805 @@
1/*
2 * des3_ede-asm_64.S - x86-64 assembly implementation of 3DES cipher
3 *
4 * Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17#include <linux/linkage.h>
18
19.file "des3_ede-asm_64.S"
20.text
21
22#define s1 .L_s1
23#define s2 ((s1) + (64*8))
24#define s3 ((s2) + (64*8))
25#define s4 ((s3) + (64*8))
26#define s5 ((s4) + (64*8))
27#define s6 ((s5) + (64*8))
28#define s7 ((s6) + (64*8))
29#define s8 ((s7) + (64*8))
30
31/* register macros */
32#define CTX %rdi
33
34#define RL0 %r8
35#define RL1 %r9
36#define RL2 %r10
37
38#define RL0d %r8d
39#define RL1d %r9d
40#define RL2d %r10d
41
42#define RR0 %r11
43#define RR1 %r12
44#define RR2 %r13
45
46#define RR0d %r11d
47#define RR1d %r12d
48#define RR2d %r13d
49
50#define RW0 %rax
51#define RW1 %rbx
52#define RW2 %rcx
53
54#define RW0d %eax
55#define RW1d %ebx
56#define RW2d %ecx
57
58#define RW0bl %al
59#define RW1bl %bl
60#define RW2bl %cl
61
62#define RW0bh %ah
63#define RW1bh %bh
64#define RW2bh %ch
65
66#define RT0 %r15
67#define RT1 %rbp
68#define RT2 %r14
69#define RT3 %rdx
70
71#define RT0d %r15d
72#define RT1d %ebp
73#define RT2d %r14d
74#define RT3d %edx
75
76/***********************************************************************
77 * 1-way 3DES
78 ***********************************************************************/
79#define do_permutation(a, b, offset, mask) \
80 movl a, RT0d; \
81 shrl $(offset), RT0d; \
82 xorl b, RT0d; \
83 andl $(mask), RT0d; \
84 xorl RT0d, b; \
85 shll $(offset), RT0d; \
86 xorl RT0d, a;
87
88#define expand_to_64bits(val, mask) \
89 movl val##d, RT0d; \
90 rorl $4, RT0d; \
91 shlq $32, RT0; \
92 orq RT0, val; \
93 andq mask, val;
94
95#define compress_to_64bits(val) \
96 movq val, RT0; \
97 shrq $32, RT0; \
98 roll $4, RT0d; \
99 orl RT0d, val##d;
100
101#define initial_permutation(left, right) \
102 do_permutation(left##d, right##d, 4, 0x0f0f0f0f); \
103 do_permutation(left##d, right##d, 16, 0x0000ffff); \
104 do_permutation(right##d, left##d, 2, 0x33333333); \
105 do_permutation(right##d, left##d, 8, 0x00ff00ff); \
106 movabs $0x3f3f3f3f3f3f3f3f, RT3; \
107 movl left##d, RW0d; \
108 roll $1, right##d; \
109 xorl right##d, RW0d; \
110 andl $0xaaaaaaaa, RW0d; \
111 xorl RW0d, left##d; \
112 xorl RW0d, right##d; \
113 roll $1, left##d; \
114 expand_to_64bits(right, RT3); \
115 expand_to_64bits(left, RT3);
116
117#define final_permutation(left, right) \
118 compress_to_64bits(right); \
119 compress_to_64bits(left); \
120 movl right##d, RW0d; \
121 rorl $1, left##d; \
122 xorl left##d, RW0d; \
123 andl $0xaaaaaaaa, RW0d; \
124 xorl RW0d, right##d; \
125 xorl RW0d, left##d; \
126 rorl $1, right##d; \
127 do_permutation(right##d, left##d, 8, 0x00ff00ff); \
128 do_permutation(right##d, left##d, 2, 0x33333333); \
129 do_permutation(left##d, right##d, 16, 0x0000ffff); \
130 do_permutation(left##d, right##d, 4, 0x0f0f0f0f);
131
132#define round1(n, from, to, load_next_key) \
133 xorq from, RW0; \
134 \
135 movzbl RW0bl, RT0d; \
136 movzbl RW0bh, RT1d; \
137 shrq $16, RW0; \
138 movzbl RW0bl, RT2d; \
139 movzbl RW0bh, RT3d; \
140 shrq $16, RW0; \
141 movq s8(, RT0, 8), RT0; \
142 xorq s6(, RT1, 8), to; \
143 movzbl RW0bl, RL1d; \
144 movzbl RW0bh, RT1d; \
145 shrl $16, RW0d; \
146 xorq s4(, RT2, 8), RT0; \
147 xorq s2(, RT3, 8), to; \
148 movzbl RW0bl, RT2d; \
149 movzbl RW0bh, RT3d; \
150 xorq s7(, RL1, 8), RT0; \
151 xorq s5(, RT1, 8), to; \
152 xorq s3(, RT2, 8), RT0; \
153 load_next_key(n, RW0); \
154 xorq RT0, to; \
155 xorq s1(, RT3, 8), to; \
156
157#define load_next_key(n, RWx) \
158 movq (((n) + 1) * 8)(CTX), RWx;
159
160#define dummy2(a, b) /*_*/
161
162#define read_block(io, left, right) \
163 movl (io), left##d; \
164 movl 4(io), right##d; \
165 bswapl left##d; \
166 bswapl right##d;
167
168#define write_block(io, left, right) \
169 bswapl left##d; \
170 bswapl right##d; \
171 movl left##d, (io); \
172 movl right##d, 4(io);
173
174ENTRY(des3_ede_x86_64_crypt_blk)
175 /* input:
176 * %rdi: round keys, CTX
177 * %rsi: dst
178 * %rdx: src
179 */
180 pushq %rbp;
181 pushq %rbx;
182 pushq %r12;
183 pushq %r13;
184 pushq %r14;
185 pushq %r15;
186
187 read_block(%rdx, RL0, RR0);
188 initial_permutation(RL0, RR0);
189
190 movq (CTX), RW0;
191
192 round1(0, RR0, RL0, load_next_key);
193 round1(1, RL0, RR0, load_next_key);
194 round1(2, RR0, RL0, load_next_key);
195 round1(3, RL0, RR0, load_next_key);
196 round1(4, RR0, RL0, load_next_key);
197 round1(5, RL0, RR0, load_next_key);
198 round1(6, RR0, RL0, load_next_key);
199 round1(7, RL0, RR0, load_next_key);
200 round1(8, RR0, RL0, load_next_key);
201 round1(9, RL0, RR0, load_next_key);
202 round1(10, RR0, RL0, load_next_key);
203 round1(11, RL0, RR0, load_next_key);
204 round1(12, RR0, RL0, load_next_key);
205 round1(13, RL0, RR0, load_next_key);
206 round1(14, RR0, RL0, load_next_key);
207 round1(15, RL0, RR0, load_next_key);
208
209 round1(16+0, RL0, RR0, load_next_key);
210 round1(16+1, RR0, RL0, load_next_key);
211 round1(16+2, RL0, RR0, load_next_key);
212 round1(16+3, RR0, RL0, load_next_key);
213 round1(16+4, RL0, RR0, load_next_key);
214 round1(16+5, RR0, RL0, load_next_key);
215 round1(16+6, RL0, RR0, load_next_key);
216 round1(16+7, RR0, RL0, load_next_key);
217 round1(16+8, RL0, RR0, load_next_key);
218 round1(16+9, RR0, RL0, load_next_key);
219 round1(16+10, RL0, RR0, load_next_key);
220 round1(16+11, RR0, RL0, load_next_key);
221 round1(16+12, RL0, RR0, load_next_key);
222 round1(16+13, RR0, RL0, load_next_key);
223 round1(16+14, RL0, RR0, load_next_key);
224 round1(16+15, RR0, RL0, load_next_key);
225
226 round1(32+0, RR0, RL0, load_next_key);
227 round1(32+1, RL0, RR0, load_next_key);
228 round1(32+2, RR0, RL0, load_next_key);
229 round1(32+3, RL0, RR0, load_next_key);
230 round1(32+4, RR0, RL0, load_next_key);
231 round1(32+5, RL0, RR0, load_next_key);
232 round1(32+6, RR0, RL0, load_next_key);
233 round1(32+7, RL0, RR0, load_next_key);
234 round1(32+8, RR0, RL0, load_next_key);
235 round1(32+9, RL0, RR0, load_next_key);
236 round1(32+10, RR0, RL0, load_next_key);
237 round1(32+11, RL0, RR0, load_next_key);
238 round1(32+12, RR0, RL0, load_next_key);
239 round1(32+13, RL0, RR0, load_next_key);
240 round1(32+14, RR0, RL0, load_next_key);
241 round1(32+15, RL0, RR0, dummy2);
242
243 final_permutation(RR0, RL0);
244 write_block(%rsi, RR0, RL0);
245
246 popq %r15;
247 popq %r14;
248 popq %r13;
249 popq %r12;
250 popq %rbx;
251 popq %rbp;
252
253 ret;
254ENDPROC(des3_ede_x86_64_crypt_blk)
255
256/***********************************************************************
257 * 3-way 3DES
258 ***********************************************************************/
259#define expand_to_64bits(val, mask) \
260 movl val##d, RT0d; \
261 rorl $4, RT0d; \
262 shlq $32, RT0; \
263 orq RT0, val; \
264 andq mask, val;
265
266#define compress_to_64bits(val) \
267 movq val, RT0; \
268 shrq $32, RT0; \
269 roll $4, RT0d; \
270 orl RT0d, val##d;
271
272#define initial_permutation3(left, right) \
273 do_permutation(left##0d, right##0d, 4, 0x0f0f0f0f); \
274 do_permutation(left##0d, right##0d, 16, 0x0000ffff); \
275 do_permutation(left##1d, right##1d, 4, 0x0f0f0f0f); \
276 do_permutation(left##1d, right##1d, 16, 0x0000ffff); \
277 do_permutation(left##2d, right##2d, 4, 0x0f0f0f0f); \
278 do_permutation(left##2d, right##2d, 16, 0x0000ffff); \
279 \
280 do_permutation(right##0d, left##0d, 2, 0x33333333); \
281 do_permutation(right##0d, left##0d, 8, 0x00ff00ff); \
282 do_permutation(right##1d, left##1d, 2, 0x33333333); \
283 do_permutation(right##1d, left##1d, 8, 0x00ff00ff); \
284 do_permutation(right##2d, left##2d, 2, 0x33333333); \
285 do_permutation(right##2d, left##2d, 8, 0x00ff00ff); \
286 \
287 movabs $0x3f3f3f3f3f3f3f3f, RT3; \
288 \
289 movl left##0d, RW0d; \
290 roll $1, right##0d; \
291 xorl right##0d, RW0d; \
292 andl $0xaaaaaaaa, RW0d; \
293 xorl RW0d, left##0d; \
294 xorl RW0d, right##0d; \
295 roll $1, left##0d; \
296 expand_to_64bits(right##0, RT3); \
297 expand_to_64bits(left##0, RT3); \
298 movl left##1d, RW1d; \
299 roll $1, right##1d; \
300 xorl right##1d, RW1d; \
301 andl $0xaaaaaaaa, RW1d; \
302 xorl RW1d, left##1d; \
303 xorl RW1d, right##1d; \
304 roll $1, left##1d; \
305 expand_to_64bits(right##1, RT3); \
306 expand_to_64bits(left##1, RT3); \
307 movl left##2d, RW2d; \
308 roll $1, right##2d; \
309 xorl right##2d, RW2d; \
310 andl $0xaaaaaaaa, RW2d; \
311 xorl RW2d, left##2d; \
312 xorl RW2d, right##2d; \
313 roll $1, left##2d; \
314 expand_to_64bits(right##2, RT3); \
315 expand_to_64bits(left##2, RT3);
316
317#define final_permutation3(left, right) \
318 compress_to_64bits(right##0); \
319 compress_to_64bits(left##0); \
320 movl right##0d, RW0d; \
321 rorl $1, left##0d; \
322 xorl left##0d, RW0d; \
323 andl $0xaaaaaaaa, RW0d; \
324 xorl RW0d, right##0d; \
325 xorl RW0d, left##0d; \
326 rorl $1, right##0d; \
327 compress_to_64bits(right##1); \
328 compress_to_64bits(left##1); \
329 movl right##1d, RW1d; \
330 rorl $1, left##1d; \
331 xorl left##1d, RW1d; \
332 andl $0xaaaaaaaa, RW1d; \
333 xorl RW1d, right##1d; \
334 xorl RW1d, left##1d; \
335 rorl $1, right##1d; \
336 compress_to_64bits(right##2); \
337 compress_to_64bits(left##2); \
338 movl right##2d, RW2d; \
339 rorl $1, left##2d; \
340 xorl left##2d, RW2d; \
341 andl $0xaaaaaaaa, RW2d; \
342 xorl RW2d, right##2d; \
343 xorl RW2d, left##2d; \
344 rorl $1, right##2d; \
345 \
346 do_permutation(right##0d, left##0d, 8, 0x00ff00ff); \
347 do_permutation(right##0d, left##0d, 2, 0x33333333); \
348 do_permutation(right##1d, left##1d, 8, 0x00ff00ff); \
349 do_permutation(right##1d, left##1d, 2, 0x33333333); \
350 do_permutation(right##2d, left##2d, 8, 0x00ff00ff); \
351 do_permutation(right##2d, left##2d, 2, 0x33333333); \
352 \
353 do_permutation(left##0d, right##0d, 16, 0x0000ffff); \
354 do_permutation(left##0d, right##0d, 4, 0x0f0f0f0f); \
355 do_permutation(left##1d, right##1d, 16, 0x0000ffff); \
356 do_permutation(left##1d, right##1d, 4, 0x0f0f0f0f); \
357 do_permutation(left##2d, right##2d, 16, 0x0000ffff); \
358 do_permutation(left##2d, right##2d, 4, 0x0f0f0f0f);
359
360#define round3(n, from, to, load_next_key, do_movq) \
361 xorq from##0, RW0; \
362 movzbl RW0bl, RT3d; \
363 movzbl RW0bh, RT1d; \
364 shrq $16, RW0; \
365 xorq s8(, RT3, 8), to##0; \
366 xorq s6(, RT1, 8), to##0; \
367 movzbl RW0bl, RT3d; \
368 movzbl RW0bh, RT1d; \
369 shrq $16, RW0; \
370 xorq s4(, RT3, 8), to##0; \
371 xorq s2(, RT1, 8), to##0; \
372 movzbl RW0bl, RT3d; \
373 movzbl RW0bh, RT1d; \
374 shrl $16, RW0d; \
375 xorq s7(, RT3, 8), to##0; \
376 xorq s5(, RT1, 8), to##0; \
377 movzbl RW0bl, RT3d; \
378 movzbl RW0bh, RT1d; \
379 load_next_key(n, RW0); \
380 xorq s3(, RT3, 8), to##0; \
381 xorq s1(, RT1, 8), to##0; \
382 xorq from##1, RW1; \
383 movzbl RW1bl, RT3d; \
384 movzbl RW1bh, RT1d; \
385 shrq $16, RW1; \
386 xorq s8(, RT3, 8), to##1; \
387 xorq s6(, RT1, 8), to##1; \
388 movzbl RW1bl, RT3d; \
389 movzbl RW1bh, RT1d; \
390 shrq $16, RW1; \
391 xorq s4(, RT3, 8), to##1; \
392 xorq s2(, RT1, 8), to##1; \
393 movzbl RW1bl, RT3d; \
394 movzbl RW1bh, RT1d; \
395 shrl $16, RW1d; \
396 xorq s7(, RT3, 8), to##1; \
397 xorq s5(, RT1, 8), to##1; \
398 movzbl RW1bl, RT3d; \
399 movzbl RW1bh, RT1d; \
400 do_movq(RW0, RW1); \
401 xorq s3(, RT3, 8), to##1; \
402 xorq s1(, RT1, 8), to##1; \
403 xorq from##2, RW2; \
404 movzbl RW2bl, RT3d; \
405 movzbl RW2bh, RT1d; \
406 shrq $16, RW2; \
407 xorq s8(, RT3, 8), to##2; \
408 xorq s6(, RT1, 8), to##2; \
409 movzbl RW2bl, RT3d; \
410 movzbl RW2bh, RT1d; \
411 shrq $16, RW2; \
412 xorq s4(, RT3, 8), to##2; \
413 xorq s2(, RT1, 8), to##2; \
414 movzbl RW2bl, RT3d; \
415 movzbl RW2bh, RT1d; \
416 shrl $16, RW2d; \
417 xorq s7(, RT3, 8), to##2; \
418 xorq s5(, RT1, 8), to##2; \
419 movzbl RW2bl, RT3d; \
420 movzbl RW2bh, RT1d; \
421 do_movq(RW0, RW2); \
422 xorq s3(, RT3, 8), to##2; \
423 xorq s1(, RT1, 8), to##2;
424
425#define __movq(src, dst) \
426 movq src, dst;
427
428ENTRY(des3_ede_x86_64_crypt_blk_3way)
429 /* input:
430 * %rdi: ctx, round keys
431 * %rsi: dst (3 blocks)
432 * %rdx: src (3 blocks)
433 */
434
435 pushq %rbp;
436 pushq %rbx;
437 pushq %r12;
438 pushq %r13;
439 pushq %r14;
440 pushq %r15;
441
442 /* load input */
443 movl 0 * 4(%rdx), RL0d;
444 movl 1 * 4(%rdx), RR0d;
445 movl 2 * 4(%rdx), RL1d;
446 movl 3 * 4(%rdx), RR1d;
447 movl 4 * 4(%rdx), RL2d;
448 movl 5 * 4(%rdx), RR2d;
449
450 bswapl RL0d;
451 bswapl RR0d;
452 bswapl RL1d;
453 bswapl RR1d;
454 bswapl RL2d;
455 bswapl RR2d;
456
457 initial_permutation3(RL, RR);
458
459 movq 0(CTX), RW0;
460 movq RW0, RW1;
461 movq RW0, RW2;
462
463 round3(0, RR, RL, load_next_key, __movq);
464 round3(1, RL, RR, load_next_key, __movq);
465 round3(2, RR, RL, load_next_key, __movq);
466 round3(3, RL, RR, load_next_key, __movq);
467 round3(4, RR, RL, load_next_key, __movq);
468 round3(5, RL, RR, load_next_key, __movq);
469 round3(6, RR, RL, load_next_key, __movq);
470 round3(7, RL, RR, load_next_key, __movq);
471 round3(8, RR, RL, load_next_key, __movq);
472 round3(9, RL, RR, load_next_key, __movq);
473 round3(10, RR, RL, load_next_key, __movq);
474 round3(11, RL, RR, load_next_key, __movq);
475 round3(12, RR, RL, load_next_key, __movq);
476 round3(13, RL, RR, load_next_key, __movq);
477 round3(14, RR, RL, load_next_key, __movq);
478 round3(15, RL, RR, load_next_key, __movq);
479
480 round3(16+0, RL, RR, load_next_key, __movq);
481 round3(16+1, RR, RL, load_next_key, __movq);
482 round3(16+2, RL, RR, load_next_key, __movq);
483 round3(16+3, RR, RL, load_next_key, __movq);
484 round3(16+4, RL, RR, load_next_key, __movq);
485 round3(16+5, RR, RL, load_next_key, __movq);
486 round3(16+6, RL, RR, load_next_key, __movq);
487 round3(16+7, RR, RL, load_next_key, __movq);
488 round3(16+8, RL, RR, load_next_key, __movq);
489 round3(16+9, RR, RL, load_next_key, __movq);
490 round3(16+10, RL, RR, load_next_key, __movq);
491 round3(16+11, RR, RL, load_next_key, __movq);
492 round3(16+12, RL, RR, load_next_key, __movq);
493 round3(16+13, RR, RL, load_next_key, __movq);
494 round3(16+14, RL, RR, load_next_key, __movq);
495 round3(16+15, RR, RL, load_next_key, __movq);
496
497 round3(32+0, RR, RL, load_next_key, __movq);
498 round3(32+1, RL, RR, load_next_key, __movq);
499 round3(32+2, RR, RL, load_next_key, __movq);
500 round3(32+3, RL, RR, load_next_key, __movq);
501 round3(32+4, RR, RL, load_next_key, __movq);
502 round3(32+5, RL, RR, load_next_key, __movq);
503 round3(32+6, RR, RL, load_next_key, __movq);
504 round3(32+7, RL, RR, load_next_key, __movq);
505 round3(32+8, RR, RL, load_next_key, __movq);
506 round3(32+9, RL, RR, load_next_key, __movq);
507 round3(32+10, RR, RL, load_next_key, __movq);
508 round3(32+11, RL, RR, load_next_key, __movq);
509 round3(32+12, RR, RL, load_next_key, __movq);
510 round3(32+13, RL, RR, load_next_key, __movq);
511 round3(32+14, RR, RL, load_next_key, __movq);
512 round3(32+15, RL, RR, dummy2, dummy2);
513
514 final_permutation3(RR, RL);
515
516 bswapl RR0d;
517 bswapl RL0d;
518 bswapl RR1d;
519 bswapl RL1d;
520 bswapl RR2d;
521 bswapl RL2d;
522
523 movl RR0d, 0 * 4(%rsi);
524 movl RL0d, 1 * 4(%rsi);
525 movl RR1d, 2 * 4(%rsi);
526 movl RL1d, 3 * 4(%rsi);
527 movl RR2d, 4 * 4(%rsi);
528 movl RL2d, 5 * 4(%rsi);
529
530 popq %r15;
531 popq %r14;
532 popq %r13;
533 popq %r12;
534 popq %rbx;
535 popq %rbp;
536
537 ret;
538ENDPROC(des3_ede_x86_64_crypt_blk_3way)
539
540.data
541.align 16
542.L_s1:
543 .quad 0x0010100001010400, 0x0000000000000000
544 .quad 0x0000100000010000, 0x0010100001010404
545 .quad 0x0010100001010004, 0x0000100000010404
546 .quad 0x0000000000000004, 0x0000100000010000
547 .quad 0x0000000000000400, 0x0010100001010400
548 .quad 0x0010100001010404, 0x0000000000000400
549 .quad 0x0010000001000404, 0x0010100001010004
550 .quad 0x0010000001000000, 0x0000000000000004
551 .quad 0x0000000000000404, 0x0010000001000400
552 .quad 0x0010000001000400, 0x0000100000010400
553 .quad 0x0000100000010400, 0x0010100001010000
554 .quad 0x0010100001010000, 0x0010000001000404
555 .quad 0x0000100000010004, 0x0010000001000004
556 .quad 0x0010000001000004, 0x0000100000010004
557 .quad 0x0000000000000000, 0x0000000000000404
558 .quad 0x0000100000010404, 0x0010000001000000
559 .quad 0x0000100000010000, 0x0010100001010404
560 .quad 0x0000000000000004, 0x0010100001010000
561 .quad 0x0010100001010400, 0x0010000001000000
562 .quad 0x0010000001000000, 0x0000000000000400
563 .quad 0x0010100001010004, 0x0000100000010000
564 .quad 0x0000100000010400, 0x0010000001000004
565 .quad 0x0000000000000400, 0x0000000000000004
566 .quad 0x0010000001000404, 0x0000100000010404
567 .quad 0x0010100001010404, 0x0000100000010004
568 .quad 0x0010100001010000, 0x0010000001000404
569 .quad 0x0010000001000004, 0x0000000000000404
570 .quad 0x0000100000010404, 0x0010100001010400
571 .quad 0x0000000000000404, 0x0010000001000400
572 .quad 0x0010000001000400, 0x0000000000000000
573 .quad 0x0000100000010004, 0x0000100000010400
574 .quad 0x0000000000000000, 0x0010100001010004
575.L_s2:
576 .quad 0x0801080200100020, 0x0800080000000000
577 .quad 0x0000080000000000, 0x0001080200100020
578 .quad 0x0001000000100000, 0x0000000200000020
579 .quad 0x0801000200100020, 0x0800080200000020
580 .quad 0x0800000200000020, 0x0801080200100020
581 .quad 0x0801080000100000, 0x0800000000000000
582 .quad 0x0800080000000000, 0x0001000000100000
583 .quad 0x0000000200000020, 0x0801000200100020
584 .quad 0x0001080000100000, 0x0001000200100020
585 .quad 0x0800080200000020, 0x0000000000000000
586 .quad 0x0800000000000000, 0x0000080000000000
587 .quad 0x0001080200100020, 0x0801000000100000
588 .quad 0x0001000200100020, 0x0800000200000020
589 .quad 0x0000000000000000, 0x0001080000100000
590 .quad 0x0000080200000020, 0x0801080000100000
591 .quad 0x0801000000100000, 0x0000080200000020
592 .quad 0x0000000000000000, 0x0001080200100020
593 .quad 0x0801000200100020, 0x0001000000100000
594 .quad 0x0800080200000020, 0x0801000000100000
595 .quad 0x0801080000100000, 0x0000080000000000
596 .quad 0x0801000000100000, 0x0800080000000000
597 .quad 0x0000000200000020, 0x0801080200100020
598 .quad 0x0001080200100020, 0x0000000200000020
599 .quad 0x0000080000000000, 0x0800000000000000
600 .quad 0x0000080200000020, 0x0801080000100000
601 .quad 0x0001000000100000, 0x0800000200000020
602 .quad 0x0001000200100020, 0x0800080200000020
603 .quad 0x0800000200000020, 0x0001000200100020
604 .quad 0x0001080000100000, 0x0000000000000000
605 .quad 0x0800080000000000, 0x0000080200000020
606 .quad 0x0800000000000000, 0x0801000200100020
607 .quad 0x0801080200100020, 0x0001080000100000
608.L_s3:
609 .quad 0x0000002000000208, 0x0000202008020200
610 .quad 0x0000000000000000, 0x0000200008020008
611 .quad 0x0000002008000200, 0x0000000000000000
612 .quad 0x0000202000020208, 0x0000002008000200
613 .quad 0x0000200000020008, 0x0000000008000008
614 .quad 0x0000000008000008, 0x0000200000020000
615 .quad 0x0000202008020208, 0x0000200000020008
616 .quad 0x0000200008020000, 0x0000002000000208
617 .quad 0x0000000008000000, 0x0000000000000008
618 .quad 0x0000202008020200, 0x0000002000000200
619 .quad 0x0000202000020200, 0x0000200008020000
620 .quad 0x0000200008020008, 0x0000202000020208
621 .quad 0x0000002008000208, 0x0000202000020200
622 .quad 0x0000200000020000, 0x0000002008000208
623 .quad 0x0000000000000008, 0x0000202008020208
624 .quad 0x0000002000000200, 0x0000000008000000
625 .quad 0x0000202008020200, 0x0000000008000000
626 .quad 0x0000200000020008, 0x0000002000000208
627 .quad 0x0000200000020000, 0x0000202008020200
628 .quad 0x0000002008000200, 0x0000000000000000
629 .quad 0x0000002000000200, 0x0000200000020008
630 .quad 0x0000202008020208, 0x0000002008000200
631 .quad 0x0000000008000008, 0x0000002000000200
632 .quad 0x0000000000000000, 0x0000200008020008
633 .quad 0x0000002008000208, 0x0000200000020000
634 .quad 0x0000000008000000, 0x0000202008020208
635 .quad 0x0000000000000008, 0x0000202000020208
636 .quad 0x0000202000020200, 0x0000000008000008
637 .quad 0x0000200008020000, 0x0000002008000208
638 .quad 0x0000002000000208, 0x0000200008020000
639 .quad 0x0000202000020208, 0x0000000000000008
640 .quad 0x0000200008020008, 0x0000202000020200
641.L_s4:
642 .quad 0x1008020000002001, 0x1000020800002001
643 .quad 0x1000020800002001, 0x0000000800000000
644 .quad 0x0008020800002000, 0x1008000800000001
645 .quad 0x1008000000000001, 0x1000020000002001
646 .quad 0x0000000000000000, 0x0008020000002000
647 .quad 0x0008020000002000, 0x1008020800002001
648 .quad 0x1000000800000001, 0x0000000000000000
649 .quad 0x0008000800000000, 0x1008000000000001
650 .quad 0x1000000000000001, 0x0000020000002000
651 .quad 0x0008000000000000, 0x1008020000002001
652 .quad 0x0000000800000000, 0x0008000000000000
653 .quad 0x1000020000002001, 0x0000020800002000
654 .quad 0x1008000800000001, 0x1000000000000001
655 .quad 0x0000020800002000, 0x0008000800000000
656 .quad 0x0000020000002000, 0x0008020800002000
657 .quad 0x1008020800002001, 0x1000000800000001
658 .quad 0x0008000800000000, 0x1008000000000001
659 .quad 0x0008020000002000, 0x1008020800002001
660 .quad 0x1000000800000001, 0x0000000000000000
661 .quad 0x0000000000000000, 0x0008020000002000
662 .quad 0x0000020800002000, 0x0008000800000000
663 .quad 0x1008000800000001, 0x1000000000000001
664 .quad 0x1008020000002001, 0x1000020800002001
665 .quad 0x1000020800002001, 0x0000000800000000
666 .quad 0x1008020800002001, 0x1000000800000001
667 .quad 0x1000000000000001, 0x0000020000002000
668 .quad 0x1008000000000001, 0x1000020000002001
669 .quad 0x0008020800002000, 0x1008000800000001
670 .quad 0x1000020000002001, 0x0000020800002000
671 .quad 0x0008000000000000, 0x1008020000002001
672 .quad 0x0000000800000000, 0x0008000000000000
673 .quad 0x0000020000002000, 0x0008020800002000
674.L_s5:
675 .quad 0x0000001000000100, 0x0020001002080100
676 .quad 0x0020000002080000, 0x0420001002000100
677 .quad 0x0000000000080000, 0x0000001000000100
678 .quad 0x0400000000000000, 0x0020000002080000
679 .quad 0x0400001000080100, 0x0000000000080000
680 .quad 0x0020001002000100, 0x0400001000080100
681 .quad 0x0420001002000100, 0x0420000002080000
682 .quad 0x0000001000080100, 0x0400000000000000
683 .quad 0x0020000002000000, 0x0400000000080000
684 .quad 0x0400000000080000, 0x0000000000000000
685 .quad 0x0400001000000100, 0x0420001002080100
686 .quad 0x0420001002080100, 0x0020001002000100
687 .quad 0x0420000002080000, 0x0400001000000100
688 .quad 0x0000000000000000, 0x0420000002000000
689 .quad 0x0020001002080100, 0x0020000002000000
690 .quad 0x0420000002000000, 0x0000001000080100
691 .quad 0x0000000000080000, 0x0420001002000100
692 .quad 0x0000001000000100, 0x0020000002000000
693 .quad 0x0400000000000000, 0x0020000002080000
694 .quad 0x0420001002000100, 0x0400001000080100
695 .quad 0x0020001002000100, 0x0400000000000000
696 .quad 0x0420000002080000, 0x0020001002080100
697 .quad 0x0400001000080100, 0x0000001000000100
698 .quad 0x0020000002000000, 0x0420000002080000
699 .quad 0x0420001002080100, 0x0000001000080100
700 .quad 0x0420000002000000, 0x0420001002080100
701 .quad 0x0020000002080000, 0x0000000000000000
702 .quad 0x0400000000080000, 0x0420000002000000
703 .quad 0x0000001000080100, 0x0020001002000100
704 .quad 0x0400001000000100, 0x0000000000080000
705 .quad 0x0000000000000000, 0x0400000000080000
706 .quad 0x0020001002080100, 0x0400001000000100
707.L_s6:
708 .quad 0x0200000120000010, 0x0204000020000000
709 .quad 0x0000040000000000, 0x0204040120000010
710 .quad 0x0204000020000000, 0x0000000100000010
711 .quad 0x0204040120000010, 0x0004000000000000
712 .quad 0x0200040020000000, 0x0004040100000010
713 .quad 0x0004000000000000, 0x0200000120000010
714 .quad 0x0004000100000010, 0x0200040020000000
715 .quad 0x0200000020000000, 0x0000040100000010
716 .quad 0x0000000000000000, 0x0004000100000010
717 .quad 0x0200040120000010, 0x0000040000000000
718 .quad 0x0004040000000000, 0x0200040120000010
719 .quad 0x0000000100000010, 0x0204000120000010
720 .quad 0x0204000120000010, 0x0000000000000000
721 .quad 0x0004040100000010, 0x0204040020000000
722 .quad 0x0000040100000010, 0x0004040000000000
723 .quad 0x0204040020000000, 0x0200000020000000
724 .quad 0x0200040020000000, 0x0000000100000010
725 .quad 0x0204000120000010, 0x0004040000000000
726 .quad 0x0204040120000010, 0x0004000000000000
727 .quad 0x0000040100000010, 0x0200000120000010
728 .quad 0x0004000000000000, 0x0200040020000000
729 .quad 0x0200000020000000, 0x0000040100000010
730 .quad 0x0200000120000010, 0x0204040120000010
731 .quad 0x0004040000000000, 0x0204000020000000
732 .quad 0x0004040100000010, 0x0204040020000000
733 .quad 0x0000000000000000, 0x0204000120000010
734 .quad 0x0000000100000010, 0x0000040000000000
735 .quad 0x0204000020000000, 0x0004040100000010
736 .quad 0x0000040000000000, 0x0004000100000010
737 .quad 0x0200040120000010, 0x0000000000000000
738 .quad 0x0204040020000000, 0x0200000020000000
739 .quad 0x0004000100000010, 0x0200040120000010
740.L_s7:
741 .quad 0x0002000000200000, 0x2002000004200002
742 .quad 0x2000000004000802, 0x0000000000000000
743 .quad 0x0000000000000800, 0x2000000004000802
744 .quad 0x2002000000200802, 0x0002000004200800
745 .quad 0x2002000004200802, 0x0002000000200000
746 .quad 0x0000000000000000, 0x2000000004000002
747 .quad 0x2000000000000002, 0x0000000004000000
748 .quad 0x2002000004200002, 0x2000000000000802
749 .quad 0x0000000004000800, 0x2002000000200802
750 .quad 0x2002000000200002, 0x0000000004000800
751 .quad 0x2000000004000002, 0x0002000004200000
752 .quad 0x0002000004200800, 0x2002000000200002
753 .quad 0x0002000004200000, 0x0000000000000800
754 .quad 0x2000000000000802, 0x2002000004200802
755 .quad 0x0002000000200800, 0x2000000000000002
756 .quad 0x0000000004000000, 0x0002000000200800
757 .quad 0x0000000004000000, 0x0002000000200800
758 .quad 0x0002000000200000, 0x2000000004000802
759 .quad 0x2000000004000802, 0x2002000004200002
760 .quad 0x2002000004200002, 0x2000000000000002
761 .quad 0x2002000000200002, 0x0000000004000000
762 .quad 0x0000000004000800, 0x0002000000200000
763 .quad 0x0002000004200800, 0x2000000000000802
764 .quad 0x2002000000200802, 0x0002000004200800
765 .quad 0x2000000000000802, 0x2000000004000002
766 .quad 0x2002000004200802, 0x0002000004200000
767 .quad 0x0002000000200800, 0x0000000000000000
768 .quad 0x2000000000000002, 0x2002000004200802
769 .quad 0x0000000000000000, 0x2002000000200802
770 .quad 0x0002000004200000, 0x0000000000000800
771 .quad 0x2000000004000002, 0x0000000004000800
772 .quad 0x0000000000000800, 0x2002000000200002
773.L_s8:
774 .quad 0x0100010410001000, 0x0000010000001000
775 .quad 0x0000000000040000, 0x0100010410041000
776 .quad 0x0100000010000000, 0x0100010410001000
777 .quad 0x0000000400000000, 0x0100000010000000
778 .quad 0x0000000400040000, 0x0100000010040000
779 .quad 0x0100010410041000, 0x0000010000041000
780 .quad 0x0100010010041000, 0x0000010400041000
781 .quad 0x0000010000001000, 0x0000000400000000
782 .quad 0x0100000010040000, 0x0100000410000000
783 .quad 0x0100010010001000, 0x0000010400001000
784 .quad 0x0000010000041000, 0x0000000400040000
785 .quad 0x0100000410040000, 0x0100010010041000
786 .quad 0x0000010400001000, 0x0000000000000000
787 .quad 0x0000000000000000, 0x0100000410040000
788 .quad 0x0100000410000000, 0x0100010010001000
789 .quad 0x0000010400041000, 0x0000000000040000
790 .quad 0x0000010400041000, 0x0000000000040000
791 .quad 0x0100010010041000, 0x0000010000001000
792 .quad 0x0000000400000000, 0x0100000410040000
793 .quad 0x0000010000001000, 0x0000010400041000
794 .quad 0x0100010010001000, 0x0000000400000000
795 .quad 0x0100000410000000, 0x0100000010040000
796 .quad 0x0100000410040000, 0x0100000010000000
797 .quad 0x0000000000040000, 0x0100010410001000
798 .quad 0x0000000000000000, 0x0100010410041000
799 .quad 0x0000000400040000, 0x0100000410000000
800 .quad 0x0100000010040000, 0x0100010010001000
801 .quad 0x0100010410001000, 0x0000000000000000
802 .quad 0x0100010410041000, 0x0000010000041000
803 .quad 0x0000010000041000, 0x0000010400001000
804 .quad 0x0000010400001000, 0x0000000400040000
805 .quad 0x0100000010000000, 0x0100010010041000
diff --git a/arch/x86/crypto/des3_ede_glue.c b/arch/x86/crypto/des3_ede_glue.c
new file mode 100644
index 000000000000..ebc421543e44
--- /dev/null
+++ b/arch/x86/crypto/des3_ede_glue.c
@@ -0,0 +1,509 @@
1/*
2 * Glue Code for assembler optimized version of 3DES
3 *
4 * Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
5 *
6 * CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
7 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
8 * CTR part based on code (crypto/ctr.c) by:
9 * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 */
22
23#include <asm/processor.h>
24#include <crypto/des.h>
25#include <linux/crypto.h>
26#include <linux/init.h>
27#include <linux/module.h>
28#include <linux/types.h>
29#include <crypto/algapi.h>
30
31struct des3_ede_x86_ctx {
32 u32 enc_expkey[DES3_EDE_EXPKEY_WORDS];
33 u32 dec_expkey[DES3_EDE_EXPKEY_WORDS];
34};
35
36/* regular block cipher functions */
37asmlinkage void des3_ede_x86_64_crypt_blk(const u32 *expkey, u8 *dst,
38 const u8 *src);
39
40/* 3-way parallel cipher functions */
41asmlinkage void des3_ede_x86_64_crypt_blk_3way(const u32 *expkey, u8 *dst,
42 const u8 *src);
43
44static inline void des3_ede_enc_blk(struct des3_ede_x86_ctx *ctx, u8 *dst,
45 const u8 *src)
46{
47 u32 *enc_ctx = ctx->enc_expkey;
48
49 des3_ede_x86_64_crypt_blk(enc_ctx, dst, src);
50}
51
52static inline void des3_ede_dec_blk(struct des3_ede_x86_ctx *ctx, u8 *dst,
53 const u8 *src)
54{
55 u32 *dec_ctx = ctx->dec_expkey;
56
57 des3_ede_x86_64_crypt_blk(dec_ctx, dst, src);
58}
59
60static inline void des3_ede_enc_blk_3way(struct des3_ede_x86_ctx *ctx, u8 *dst,
61 const u8 *src)
62{
63 u32 *enc_ctx = ctx->enc_expkey;
64
65 des3_ede_x86_64_crypt_blk_3way(enc_ctx, dst, src);
66}
67
68static inline void des3_ede_dec_blk_3way(struct des3_ede_x86_ctx *ctx, u8 *dst,
69 const u8 *src)
70{
71 u32 *dec_ctx = ctx->dec_expkey;
72
73 des3_ede_x86_64_crypt_blk_3way(dec_ctx, dst, src);
74}
75
76static void des3_ede_x86_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
77{
78 des3_ede_enc_blk(crypto_tfm_ctx(tfm), dst, src);
79}
80
81static void des3_ede_x86_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
82{
83 des3_ede_dec_blk(crypto_tfm_ctx(tfm), dst, src);
84}
85
86static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
87 const u32 *expkey)
88{
89 unsigned int bsize = DES3_EDE_BLOCK_SIZE;
90 unsigned int nbytes;
91 int err;
92
93 err = blkcipher_walk_virt(desc, walk);
94
95 while ((nbytes = walk->nbytes)) {
96 u8 *wsrc = walk->src.virt.addr;
97 u8 *wdst = walk->dst.virt.addr;
98
99 /* Process four block batch */
100 if (nbytes >= bsize * 3) {
101 do {
102 des3_ede_x86_64_crypt_blk_3way(expkey, wdst,
103 wsrc);
104
105 wsrc += bsize * 3;
106 wdst += bsize * 3;
107 nbytes -= bsize * 3;
108 } while (nbytes >= bsize * 3);
109
110 if (nbytes < bsize)
111 goto done;
112 }
113
114 /* Handle leftovers */
115 do {
116 des3_ede_x86_64_crypt_blk(expkey, wdst, wsrc);
117
118 wsrc += bsize;
119 wdst += bsize;
120 nbytes -= bsize;
121 } while (nbytes >= bsize);
122
123done:
124 err = blkcipher_walk_done(desc, walk, nbytes);
125 }
126
127 return err;
128}
129
130static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
131 struct scatterlist *src, unsigned int nbytes)
132{
133 struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
134 struct blkcipher_walk walk;
135
136 blkcipher_walk_init(&walk, dst, src, nbytes);
137 return ecb_crypt(desc, &walk, ctx->enc_expkey);
138}
139
140static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
141 struct scatterlist *src, unsigned int nbytes)
142{
143 struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
144 struct blkcipher_walk walk;
145
146 blkcipher_walk_init(&walk, dst, src, nbytes);
147 return ecb_crypt(desc, &walk, ctx->dec_expkey);
148}
149
150static unsigned int __cbc_encrypt(struct blkcipher_desc *desc,
151 struct blkcipher_walk *walk)
152{
153 struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
154 unsigned int bsize = DES3_EDE_BLOCK_SIZE;
155 unsigned int nbytes = walk->nbytes;
156 u64 *src = (u64 *)walk->src.virt.addr;
157 u64 *dst = (u64 *)walk->dst.virt.addr;
158 u64 *iv = (u64 *)walk->iv;
159
160 do {
161 *dst = *src ^ *iv;
162 des3_ede_enc_blk(ctx, (u8 *)dst, (u8 *)dst);
163 iv = dst;
164
165 src += 1;
166 dst += 1;
167 nbytes -= bsize;
168 } while (nbytes >= bsize);
169
170 *(u64 *)walk->iv = *iv;
171 return nbytes;
172}
173
174static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
175 struct scatterlist *src, unsigned int nbytes)
176{
177 struct blkcipher_walk walk;
178 int err;
179
180 blkcipher_walk_init(&walk, dst, src, nbytes);
181 err = blkcipher_walk_virt(desc, &walk);
182
183 while ((nbytes = walk.nbytes)) {
184 nbytes = __cbc_encrypt(desc, &walk);
185 err = blkcipher_walk_done(desc, &walk, nbytes);
186 }
187
188 return err;
189}
190
191static unsigned int __cbc_decrypt(struct blkcipher_desc *desc,
192 struct blkcipher_walk *walk)
193{
194 struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
195 unsigned int bsize = DES3_EDE_BLOCK_SIZE;
196 unsigned int nbytes = walk->nbytes;
197 u64 *src = (u64 *)walk->src.virt.addr;
198 u64 *dst = (u64 *)walk->dst.virt.addr;
199 u64 ivs[3 - 1];
200 u64 last_iv;
201
202 /* Start of the last block. */
203 src += nbytes / bsize - 1;
204 dst += nbytes / bsize - 1;
205
206 last_iv = *src;
207
208 /* Process four block batch */
209 if (nbytes >= bsize * 3) {
210 do {
211 nbytes -= bsize * 3 - bsize;
212 src -= 3 - 1;
213 dst -= 3 - 1;
214
215 ivs[0] = src[0];
216 ivs[1] = src[1];
217
218 des3_ede_dec_blk_3way(ctx, (u8 *)dst, (u8 *)src);
219
220 dst[1] ^= ivs[0];
221 dst[2] ^= ivs[1];
222
223 nbytes -= bsize;
224 if (nbytes < bsize)
225 goto done;
226
227 *dst ^= *(src - 1);
228 src -= 1;
229 dst -= 1;
230 } while (nbytes >= bsize * 3);
231 }
232
233 /* Handle leftovers */
234 for (;;) {
235 des3_ede_dec_blk(ctx, (u8 *)dst, (u8 *)src);
236
237 nbytes -= bsize;
238 if (nbytes < bsize)
239 break;
240
241 *dst ^= *(src - 1);
242 src -= 1;
243 dst -= 1;
244 }
245
246done:
247 *dst ^= *(u64 *)walk->iv;
248 *(u64 *)walk->iv = last_iv;
249
250 return nbytes;
251}
252
253static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
254 struct scatterlist *src, unsigned int nbytes)
255{
256 struct blkcipher_walk walk;
257 int err;
258
259 blkcipher_walk_init(&walk, dst, src, nbytes);
260 err = blkcipher_walk_virt(desc, &walk);
261
262 while ((nbytes = walk.nbytes)) {
263 nbytes = __cbc_decrypt(desc, &walk);
264 err = blkcipher_walk_done(desc, &walk, nbytes);
265 }
266
267 return err;
268}
269
270static void ctr_crypt_final(struct des3_ede_x86_ctx *ctx,
271 struct blkcipher_walk *walk)
272{
273 u8 *ctrblk = walk->iv;
274 u8 keystream[DES3_EDE_BLOCK_SIZE];
275 u8 *src = walk->src.virt.addr;
276 u8 *dst = walk->dst.virt.addr;
277 unsigned int nbytes = walk->nbytes;
278
279 des3_ede_enc_blk(ctx, keystream, ctrblk);
280 crypto_xor(keystream, src, nbytes);
281 memcpy(dst, keystream, nbytes);
282
283 crypto_inc(ctrblk, DES3_EDE_BLOCK_SIZE);
284}
285
286static unsigned int __ctr_crypt(struct blkcipher_desc *desc,
287 struct blkcipher_walk *walk)
288{
289 struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
290 unsigned int bsize = DES3_EDE_BLOCK_SIZE;
291 unsigned int nbytes = walk->nbytes;
292 u64 *src = (u64 *)walk->src.virt.addr;
293 u64 *dst = (u64 *)walk->dst.virt.addr;
294 u64 ctrblk = be64_to_cpu(*(__be64 *)walk->iv);
295 __be64 ctrblocks[3];
296
297 /* Process four block batch */
298 if (nbytes >= bsize * 3) {
299 do {
300 /* create ctrblks for parallel encrypt */
301 ctrblocks[0] = cpu_to_be64(ctrblk++);
302 ctrblocks[1] = cpu_to_be64(ctrblk++);
303 ctrblocks[2] = cpu_to_be64(ctrblk++);
304
305 des3_ede_enc_blk_3way(ctx, (u8 *)ctrblocks,
306 (u8 *)ctrblocks);
307
308 dst[0] = src[0] ^ ctrblocks[0];
309 dst[1] = src[1] ^ ctrblocks[1];
310 dst[2] = src[2] ^ ctrblocks[2];
311
312 src += 3;
313 dst += 3;
314 } while ((nbytes -= bsize * 3) >= bsize * 3);
315
316 if (nbytes < bsize)
317 goto done;
318 }
319
320 /* Handle leftovers */
321 do {
322 ctrblocks[0] = cpu_to_be64(ctrblk++);
323
324 des3_ede_enc_blk(ctx, (u8 *)ctrblocks, (u8 *)ctrblocks);
325
326 dst[0] = src[0] ^ ctrblocks[0];
327
328 src += 1;
329 dst += 1;
330 } while ((nbytes -= bsize) >= bsize);
331
332done:
333 *(__be64 *)walk->iv = cpu_to_be64(ctrblk);
334 return nbytes;
335}
336
337static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
338 struct scatterlist *src, unsigned int nbytes)
339{
340 struct blkcipher_walk walk;
341 int err;
342
343 blkcipher_walk_init(&walk, dst, src, nbytes);
344 err = blkcipher_walk_virt_block(desc, &walk, DES3_EDE_BLOCK_SIZE);
345
346 while ((nbytes = walk.nbytes) >= DES3_EDE_BLOCK_SIZE) {
347 nbytes = __ctr_crypt(desc, &walk);
348 err = blkcipher_walk_done(desc, &walk, nbytes);
349 }
350
351 if (walk.nbytes) {
352 ctr_crypt_final(crypto_blkcipher_ctx(desc->tfm), &walk);
353 err = blkcipher_walk_done(desc, &walk, 0);
354 }
355
356 return err;
357}
358
359static int des3_ede_x86_setkey(struct crypto_tfm *tfm, const u8 *key,
360 unsigned int keylen)
361{
362 struct des3_ede_x86_ctx *ctx = crypto_tfm_ctx(tfm);
363 u32 i, j, tmp;
364 int err;
365
366 /* Generate encryption context using generic implementation. */
367 err = __des3_ede_setkey(ctx->enc_expkey, &tfm->crt_flags, key, keylen);
368 if (err < 0)
369 return err;
370
371 /* Fix encryption context for this implementation and form decryption
372 * context. */
373 j = DES3_EDE_EXPKEY_WORDS - 2;
374 for (i = 0; i < DES3_EDE_EXPKEY_WORDS; i += 2, j -= 2) {
375 tmp = ror32(ctx->enc_expkey[i + 1], 4);
376 ctx->enc_expkey[i + 1] = tmp;
377
378 ctx->dec_expkey[j + 0] = ctx->enc_expkey[i + 0];
379 ctx->dec_expkey[j + 1] = tmp;
380 }
381
382 return 0;
383}
384
385static struct crypto_alg des3_ede_algs[4] = { {
386 .cra_name = "des3_ede",
387 .cra_driver_name = "des3_ede-asm",
388 .cra_priority = 200,
389 .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
390 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
391 .cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
392 .cra_alignmask = 0,
393 .cra_module = THIS_MODULE,
394 .cra_u = {
395 .cipher = {
396 .cia_min_keysize = DES3_EDE_KEY_SIZE,
397 .cia_max_keysize = DES3_EDE_KEY_SIZE,
398 .cia_setkey = des3_ede_x86_setkey,
399 .cia_encrypt = des3_ede_x86_encrypt,
400 .cia_decrypt = des3_ede_x86_decrypt,
401 }
402 }
403}, {
404 .cra_name = "ecb(des3_ede)",
405 .cra_driver_name = "ecb-des3_ede-asm",
406 .cra_priority = 300,
407 .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
408 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
409 .cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
410 .cra_alignmask = 0,
411 .cra_type = &crypto_blkcipher_type,
412 .cra_module = THIS_MODULE,
413 .cra_u = {
414 .blkcipher = {
415 .min_keysize = DES3_EDE_KEY_SIZE,
416 .max_keysize = DES3_EDE_KEY_SIZE,
417 .setkey = des3_ede_x86_setkey,
418 .encrypt = ecb_encrypt,
419 .decrypt = ecb_decrypt,
420 },
421 },
422}, {
423 .cra_name = "cbc(des3_ede)",
424 .cra_driver_name = "cbc-des3_ede-asm",
425 .cra_priority = 300,
426 .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
427 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
428 .cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
429 .cra_alignmask = 0,
430 .cra_type = &crypto_blkcipher_type,
431 .cra_module = THIS_MODULE,
432 .cra_u = {
433 .blkcipher = {
434 .min_keysize = DES3_EDE_KEY_SIZE,
435 .max_keysize = DES3_EDE_KEY_SIZE,
436 .ivsize = DES3_EDE_BLOCK_SIZE,
437 .setkey = des3_ede_x86_setkey,
438 .encrypt = cbc_encrypt,
439 .decrypt = cbc_decrypt,
440 },
441 },
442}, {
443 .cra_name = "ctr(des3_ede)",
444 .cra_driver_name = "ctr-des3_ede-asm",
445 .cra_priority = 300,
446 .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
447 .cra_blocksize = 1,
448 .cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
449 .cra_alignmask = 0,
450 .cra_type = &crypto_blkcipher_type,
451 .cra_module = THIS_MODULE,
452 .cra_u = {
453 .blkcipher = {
454 .min_keysize = DES3_EDE_KEY_SIZE,
455 .max_keysize = DES3_EDE_KEY_SIZE,
456 .ivsize = DES3_EDE_BLOCK_SIZE,
457 .setkey = des3_ede_x86_setkey,
458 .encrypt = ctr_crypt,
459 .decrypt = ctr_crypt,
460 },
461 },
462} };
463
464static bool is_blacklisted_cpu(void)
465{
466 if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
467 return false;
468
469 if (boot_cpu_data.x86 == 0x0f) {
470 /*
471 * On Pentium 4, des3_ede-x86_64 is slower than generic C
472 * implementation because use of 64bit rotates (which are really
473 * slow on P4). Therefore blacklist P4s.
474 */
475 return true;
476 }
477
478 return false;
479}
480
481static int force;
482module_param(force, int, 0);
483MODULE_PARM_DESC(force, "Force module load, ignore CPU blacklist");
484
485static int __init des3_ede_x86_init(void)
486{
487 if (!force && is_blacklisted_cpu()) {
488 pr_info("des3_ede-x86_64: performance on this CPU would be suboptimal: disabling des3_ede-x86_64.\n");
489 return -ENODEV;
490 }
491
492 return crypto_register_algs(des3_ede_algs, ARRAY_SIZE(des3_ede_algs));
493}
494
495static void __exit des3_ede_x86_fini(void)
496{
497 crypto_unregister_algs(des3_ede_algs, ARRAY_SIZE(des3_ede_algs));
498}
499
500module_init(des3_ede_x86_init);
501module_exit(des3_ede_x86_fini);
502
503MODULE_LICENSE("GPL");
504MODULE_DESCRIPTION("Triple DES EDE Cipher Algorithm, asm optimized");
505MODULE_ALIAS("des3_ede");
506MODULE_ALIAS("des3_ede-asm");
507MODULE_ALIAS("des");
508MODULE_ALIAS("des-asm");
509MODULE_AUTHOR("Jussi Kivilinna <jussi.kivilinna@iki.fi>");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 00:19:44 -0500