sys/crypto/aesni/aesencdec.h

   1 /*-
   2  * Copyright 2013 John-Mark Gurney <jmg@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Copyright 2015 Netflix, Inc.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD$
  29  *
  30  */
  31
  32 #ifndef _AESENCDEC_H_
  33 #define _AESENCDEC_H_
  34
  35 #include <crypto/aesni/aesni_os.h>
  36
  37 #include <wmmintrin.h>
  38
  39 static inline void
  40 aesni_enc8(int rounds, const __m128i *keysched, __m128i a,
  41     __m128i b, __m128i c, __m128i d, __m128i e, __m128i f, __m128i g,
  42     __m128i h, __m128i out[8])
  43 {
  44         int i;
  45
  46         a ^= keysched[0];
  47         b ^= keysched[0];
  48         c ^= keysched[0];
  49         d ^= keysched[0];
  50         e ^= keysched[0];
  51         f ^= keysched[0];
  52         g ^= keysched[0];
  53         h ^= keysched[0];
  54
  55         for (i = 0; i < rounds; i++) {
  56                 a = _mm_aesenc_si128(a, keysched[i + 1]);
  57                 b = _mm_aesenc_si128(b, keysched[i + 1]);
  58                 c = _mm_aesenc_si128(c, keysched[i + 1]);
  59                 d = _mm_aesenc_si128(d, keysched[i + 1]);
  60                 e = _mm_aesenc_si128(e, keysched[i + 1]);
  61                 f = _mm_aesenc_si128(f, keysched[i + 1]);
  62                 g = _mm_aesenc_si128(g, keysched[i + 1]);
  63                 h = _mm_aesenc_si128(h, keysched[i + 1]);
  64         }
  65
  66         out[0] = _mm_aesenclast_si128(a, keysched[i + 1]);
  67         out[1] = _mm_aesenclast_si128(b, keysched[i + 1]);
  68         out[2] = _mm_aesenclast_si128(c, keysched[i + 1]);
  69         out[3] = _mm_aesenclast_si128(d, keysched[i + 1]);
  70         out[4] = _mm_aesenclast_si128(e, keysched[i + 1]);
  71         out[5] = _mm_aesenclast_si128(f, keysched[i + 1]);
  72         out[6] = _mm_aesenclast_si128(g, keysched[i + 1]);
  73         out[7] = _mm_aesenclast_si128(h, keysched[i + 1]);
  74 }
  75
  76 static inline void
  77 aesni_dec8(int rounds, const __m128i *keysched, __m128i a,
  78     __m128i b, __m128i c, __m128i d, __m128i e, __m128i f, __m128i g,
  79     __m128i h, __m128i out[8])
  80 {
  81         int i;
  82
  83         a ^= keysched[0];
  84         b ^= keysched[0];
  85         c ^= keysched[0];
  86         d ^= keysched[0];
  87         e ^= keysched[0];
  88         f ^= keysched[0];
  89         g ^= keysched[0];
  90         h ^= keysched[0];
  91
  92         for (i = 0; i < rounds; i++) {
  93                 a = _mm_aesdec_si128(a, keysched[i + 1]);
  94                 b = _mm_aesdec_si128(b, keysched[i + 1]);
  95                 c = _mm_aesdec_si128(c, keysched[i + 1]);
  96                 d = _mm_aesdec_si128(d, keysched[i + 1]);
  97                 e = _mm_aesdec_si128(e, keysched[i + 1]);
  98                 f = _mm_aesdec_si128(f, keysched[i + 1]);
  99                 g = _mm_aesdec_si128(g, keysched[i + 1]);
 100                 h = _mm_aesdec_si128(h, keysched[i + 1]);
 101         }
 102
 103         out[0] = _mm_aesdeclast_si128(a, keysched[i + 1]);
 104         out[1] = _mm_aesdeclast_si128(b, keysched[i + 1]);
 105         out[2] = _mm_aesdeclast_si128(c, keysched[i + 1]);
 106         out[3] = _mm_aesdeclast_si128(d, keysched[i + 1]);
 107         out[4] = _mm_aesdeclast_si128(e, keysched[i + 1]);
 108         out[5] = _mm_aesdeclast_si128(f, keysched[i + 1]);
 109         out[6] = _mm_aesdeclast_si128(g, keysched[i + 1]);
 110         out[7] = _mm_aesdeclast_si128(h, keysched[i + 1]);
 111 }
 112
 113 /* rounds is passed in as rounds - 1 */
 114 static inline __m128i
 115 aesni_enc(int rounds, const __m128i *keysched, const __m128i from)
 116 {
 117         __m128i tmp;
 118         int i;
 119
 120         tmp = from ^ keysched[0];
 121         for (i = 1; i < rounds; i += 2) {
 122                 tmp = _mm_aesenc_si128(tmp, keysched[i]);
 123                 tmp = _mm_aesenc_si128(tmp, keysched[i + 1]);
 124         }
 125
 126         tmp = _mm_aesenc_si128(tmp, keysched[rounds]);
 127         return _mm_aesenclast_si128(tmp, keysched[rounds + 1]);
 128 }
 129
 130 static inline __m128i
 131 aesni_dec(int rounds, const __m128i *keysched, const __m128i from)
 132 {
 133         __m128i tmp;
 134         int i;
 135
 136         tmp = from ^ keysched[0];
 137
 138         for (i = 1; i < rounds; i += 2) {
 139                 tmp = _mm_aesdec_si128(tmp, keysched[i]);
 140                 tmp = _mm_aesdec_si128(tmp, keysched[i + 1]);
 141         }
 142
 143         tmp = _mm_aesdec_si128(tmp, keysched[rounds]);
 144         return _mm_aesdeclast_si128(tmp, keysched[rounds + 1]);
 145 }
 146
 147 #endif /* _AESENCDEC_H_ */