aesencdec.h revision 258212 
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: stable/10/sys/crypto/aesni/aesencdec.h 258212 2013-11-16 09:01:24Z jmg $
27 *
28 */
29
30#include <wmmintrin.h>
31
32static inline void
33aesni_enc8(int rounds, const __m128i *keysched, __m128i a,
34    __m128i b, __m128i c, __m128i d, __m128i e, __m128i f, __m128i g,
35    __m128i h, __m128i out[8])
36{
37	int i;
38
39	a ^= keysched[0];
40	b ^= keysched[0];
41	c ^= keysched[0];
42	d ^= keysched[0];
43	e ^= keysched[0];
44	f ^= keysched[0];
45	g ^= keysched[0];
46	h ^= keysched[0];
47
48	for (i = 0; i < rounds; i++) {
49		a = _mm_aesenc_si128(a, keysched[i + 1]);
50		b = _mm_aesenc_si128(b, keysched[i + 1]);
51		c = _mm_aesenc_si128(c, keysched[i + 1]);
52		d = _mm_aesenc_si128(d, keysched[i + 1]);
53		e = _mm_aesenc_si128(e, keysched[i + 1]);
54		f = _mm_aesenc_si128(f, keysched[i + 1]);
55		g = _mm_aesenc_si128(g, keysched[i + 1]);
56		h = _mm_aesenc_si128(h, keysched[i + 1]);
57	}
58
59	out[0] = _mm_aesenclast_si128(a, keysched[i + 1]);
60	out[1] = _mm_aesenclast_si128(b, keysched[i + 1]);
61	out[2] = _mm_aesenclast_si128(c, keysched[i + 1]);
62	out[3] = _mm_aesenclast_si128(d, keysched[i + 1]);
63	out[4] = _mm_aesenclast_si128(e, keysched[i + 1]);
64	out[5] = _mm_aesenclast_si128(f, keysched[i + 1]);
65	out[6] = _mm_aesenclast_si128(g, keysched[i + 1]);
66	out[7] = _mm_aesenclast_si128(h, keysched[i + 1]);
67}
68
69static inline void
70aesni_dec8(int rounds, const __m128i *keysched, __m128i a,
71    __m128i b, __m128i c, __m128i d, __m128i e, __m128i f, __m128i g,
72    __m128i h, __m128i out[8])
73{
74	int i;
75
76	a ^= keysched[0];
77	b ^= keysched[0];
78	c ^= keysched[0];
79	d ^= keysched[0];
80	e ^= keysched[0];
81	f ^= keysched[0];
82	g ^= keysched[0];
83	h ^= keysched[0];
84
85	for (i = 0; i < rounds; i++) {
86		a = _mm_aesdec_si128(a, keysched[i + 1]);
87		b = _mm_aesdec_si128(b, keysched[i + 1]);
88		c = _mm_aesdec_si128(c, keysched[i + 1]);
89		d = _mm_aesdec_si128(d, keysched[i + 1]);
90		e = _mm_aesdec_si128(e, keysched[i + 1]);
91		f = _mm_aesdec_si128(f, keysched[i + 1]);
92		g = _mm_aesdec_si128(g, keysched[i + 1]);
93		h = _mm_aesdec_si128(h, keysched[i + 1]);
94	}
95
96	out[0] = _mm_aesdeclast_si128(a, keysched[i + 1]);
97	out[1] = _mm_aesdeclast_si128(b, keysched[i + 1]);
98	out[2] = _mm_aesdeclast_si128(c, keysched[i + 1]);
99	out[3] = _mm_aesdeclast_si128(d, keysched[i + 1]);
100	out[4] = _mm_aesdeclast_si128(e, keysched[i + 1]);
101	out[5] = _mm_aesdeclast_si128(f, keysched[i + 1]);
102	out[6] = _mm_aesdeclast_si128(g, keysched[i + 1]);
103	out[7] = _mm_aesdeclast_si128(h, keysched[i + 1]);
104}
105
106static inline __m128i
107aesni_enc(int rounds, const __m128i *keysched, const __m128i from)
108{
109	__m128i tmp;
110	int i;
111
112	tmp = from ^ keysched[0];
113
114	for (i = 0; i < rounds; i++)
115		tmp = _mm_aesenc_si128(tmp, keysched[i + 1]);
116
117	return _mm_aesenclast_si128(tmp, keysched[i + 1]);
118}
119
120static inline __m128i
121aesni_dec(int rounds, const __m128i *keysched, const __m128i from)
122{
123	__m128i tmp;
124	int i;
125
126	tmp = from ^ keysched[0];
127
128	for (i = 0; i < rounds; i++)
129		tmp = _mm_aesdec_si128(tmp, keysched[i + 1]);
130
131	return _mm_aesdeclast_si128(tmp, keysched[i + 1]);
132}
133