aesencdec.h revision 281606 
1/*-
2 * Copyright 2013 John-Mark Gurney <jmg@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/crypto/aesni/aesencdec.h 281606 2015-04-16 17:42:52Z rodrigc $
27 *
28 */
29
30#include <crypto/aesni/aesni_os.h>
31
32#include <wmmintrin.h>
33
34static inline void
35aesni_enc8(int rounds, const __m128i *keysched, __m128i a,
36    __m128i b, __m128i c, __m128i d, __m128i e, __m128i f, __m128i g,
37    __m128i h, __m128i out[8])
38{
39	int i;
40
41	a ^= keysched[0];
42	b ^= keysched[0];
43	c ^= keysched[0];
44	d ^= keysched[0];
45	e ^= keysched[0];
46	f ^= keysched[0];
47	g ^= keysched[0];
48	h ^= keysched[0];
49
50	for (i = 0; i < rounds; i++) {
51		a = _mm_aesenc_si128(a, keysched[i + 1]);
52		b = _mm_aesenc_si128(b, keysched[i + 1]);
53		c = _mm_aesenc_si128(c, keysched[i + 1]);
54		d = _mm_aesenc_si128(d, keysched[i + 1]);
55		e = _mm_aesenc_si128(e, keysched[i + 1]);
56		f = _mm_aesenc_si128(f, keysched[i + 1]);
57		g = _mm_aesenc_si128(g, keysched[i + 1]);
58		h = _mm_aesenc_si128(h, keysched[i + 1]);
59	}
60
61	out[0] = _mm_aesenclast_si128(a, keysched[i + 1]);
62	out[1] = _mm_aesenclast_si128(b, keysched[i + 1]);
63	out[2] = _mm_aesenclast_si128(c, keysched[i + 1]);
64	out[3] = _mm_aesenclast_si128(d, keysched[i + 1]);
65	out[4] = _mm_aesenclast_si128(e, keysched[i + 1]);
66	out[5] = _mm_aesenclast_si128(f, keysched[i + 1]);
67	out[6] = _mm_aesenclast_si128(g, keysched[i + 1]);
68	out[7] = _mm_aesenclast_si128(h, keysched[i + 1]);
69}
70
71static inline void
72aesni_dec8(int rounds, const __m128i *keysched, __m128i a,
73    __m128i b, __m128i c, __m128i d, __m128i e, __m128i f, __m128i g,
74    __m128i h, __m128i out[8])
75{
76	int i;
77
78	a ^= keysched[0];
79	b ^= keysched[0];
80	c ^= keysched[0];
81	d ^= keysched[0];
82	e ^= keysched[0];
83	f ^= keysched[0];
84	g ^= keysched[0];
85	h ^= keysched[0];
86
87	for (i = 0; i < rounds; i++) {
88		a = _mm_aesdec_si128(a, keysched[i + 1]);
89		b = _mm_aesdec_si128(b, keysched[i + 1]);
90		c = _mm_aesdec_si128(c, keysched[i + 1]);
91		d = _mm_aesdec_si128(d, keysched[i + 1]);
92		e = _mm_aesdec_si128(e, keysched[i + 1]);
93		f = _mm_aesdec_si128(f, keysched[i + 1]);
94		g = _mm_aesdec_si128(g, keysched[i + 1]);
95		h = _mm_aesdec_si128(h, keysched[i + 1]);
96	}
97
98	out[0] = _mm_aesdeclast_si128(a, keysched[i + 1]);
99	out[1] = _mm_aesdeclast_si128(b, keysched[i + 1]);
100	out[2] = _mm_aesdeclast_si128(c, keysched[i + 1]);
101	out[3] = _mm_aesdeclast_si128(d, keysched[i + 1]);
102	out[4] = _mm_aesdeclast_si128(e, keysched[i + 1]);
103	out[5] = _mm_aesdeclast_si128(f, keysched[i + 1]);
104	out[6] = _mm_aesdeclast_si128(g, keysched[i + 1]);
105	out[7] = _mm_aesdeclast_si128(h, keysched[i + 1]);
106}
107
108static inline __m128i
109aesni_enc(int rounds, const __m128i *keysched, const __m128i from)
110{
111	__m128i tmp;
112	int i;
113
114	tmp = from ^ keysched[0];
115
116	for (i = 0; i < rounds; i++)
117		tmp = _mm_aesenc_si128(tmp, keysched[i + 1]);
118
119	return _mm_aesenclast_si128(tmp, keysched[i + 1]);
120}
121
122static inline __m128i
123aesni_dec(int rounds, const __m128i *keysched, const __m128i from)
124{
125	__m128i tmp;
126	int i;
127
128	tmp = from ^ keysched[0];
129
130	for (i = 0; i < rounds; i++)
131		tmp = _mm_aesdec_si128(tmp, keysched[i + 1]);
132
133	return _mm_aesdeclast_si128(tmp, keysched[i + 1]);
134}
135