| 1 | #! /usr/bin/env perl
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| 2 | # Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | #
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| 4 | # Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | # this file except in compliance with the License. You can obtain a copy
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| 6 | # in the file LICENSE in the source distribution or at
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| 7 | # https://www.openssl.org/source/license.html
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| 8 |
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| 9 |
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| 10 | ######################################################################
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| 11 | ## Constant-time SSSE3 AES core implementation.
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| 12 | ## version 0.1
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| 13 | ##
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| 14 | ## By Mike Hamburg (Stanford University), 2009
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| 15 | ## Public domain.
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| 16 | ##
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| 17 | ## For details see http://shiftleft.org/papers/vector_aes/ and
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| 18 | ## http://crypto.stanford.edu/vpaes/.
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| 19 |
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| 20 | ######################################################################
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| 21 | # September 2011.
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| 22 | #
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| 23 | # Interface to OpenSSL as "almost" drop-in replacement for
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| 24 | # aes-x86_64.pl. "Almost" refers to the fact that AES_cbc_encrypt
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| 25 | # doesn't handle partial vectors (doesn't have to if called from
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| 26 | # EVP only). "Drop-in" implies that this module doesn't share key
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| 27 | # schedule structure with the original nor does it make assumption
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| 28 | # about its alignment...
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| 29 | #
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| 30 | # Performance summary. aes-x86_64.pl column lists large-block CBC
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| 31 | # encrypt/decrypt/with-hyper-threading-off(*) results in cycles per
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| 32 | # byte processed with 128-bit key, and vpaes-x86_64.pl column -
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| 33 | # [also large-block CBC] encrypt/decrypt.
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| 34 | #
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| 35 | # aes-x86_64.pl vpaes-x86_64.pl
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| 36 | #
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| 37 | # Core 2(**) 29.6/41.1/14.3 21.9/25.2(***)
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| 38 | # Nehalem 29.6/40.3/14.6 10.0/11.8
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| 39 | # Atom 57.3/74.2/32.1 60.9/77.2(***)
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| 40 | # Silvermont 52.7/64.0/19.5 48.8/60.8(***)
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| 41 | # Goldmont 38.9/49.0/17.8 10.6/12.6
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| 42 | #
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| 43 | # (*) "Hyper-threading" in the context refers rather to cache shared
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| 44 | # among multiple cores, than to specifically Intel HTT. As vast
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| 45 | # majority of contemporary cores share cache, slower code path
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| 46 | # is common place. In other words "with-hyper-threading-off"
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| 47 | # results are presented mostly for reference purposes.
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| 48 | #
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| 49 | # (**) "Core 2" refers to initial 65nm design, a.k.a. Conroe.
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| 50 | #
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| 51 | # (***) Less impressive improvement on Core 2 and Atom is due to slow
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| 52 | # pshufb, yet it's respectable +36%/62% improvement on Core 2
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| 53 | # (as implied, over "hyper-threading-safe" code path).
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| 54 | #
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| 55 | # <[email protected]>
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| 56 |
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| 57 | $flavour = shift;
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| 58 | $output = shift;
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| 59 | if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
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| 60 |
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| 61 | $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
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| 62 |
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| 63 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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| 64 | ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
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| 65 | ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
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| 66 | die "can't locate x86_64-xlate.pl";
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| 67 |
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| 68 | open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\"";
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| 69 | *STDOUT=*OUT;
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| 70 |
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| 71 | $PREFIX="vpaes";
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| 72 |
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| 73 | $code.=<<___;
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| 74 | .text
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| 75 |
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| 76 | ##
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| 77 | ## _aes_encrypt_core
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| 78 | ##
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| 79 | ## AES-encrypt %xmm0.
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| 80 | ##
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| 81 | ## Inputs:
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| 82 | ## %xmm0 = input
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| 83 | ## %xmm9-%xmm15 as in _vpaes_preheat
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| 84 | ## (%rdx) = scheduled keys
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| 85 | ##
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| 86 | ## Output in %xmm0
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| 87 | ## Clobbers %xmm1-%xmm5, %r9, %r10, %r11, %rax
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| 88 | ## Preserves %xmm6 - %xmm8 so you get some local vectors
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| 89 | ##
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| 90 | ##
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| 91 | .type _vpaes_encrypt_core,\@abi-omnipotent
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| 92 | .align 16
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| 93 | _vpaes_encrypt_core:
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| 94 | mov %rdx, %r9
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| 95 | mov \$16, %r11
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| 96 | mov 240(%rdx),%eax
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| 97 | movdqa %xmm9, %xmm1
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| 98 | movdqa .Lk_ipt(%rip), %xmm2 # iptlo
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| 99 | pandn %xmm0, %xmm1
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| 100 | movdqu (%r9), %xmm5 # round0 key
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| 101 | psrld \$4, %xmm1
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| 102 | pand %xmm9, %xmm0
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| 103 | pshufb %xmm0, %xmm2
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| 104 | movdqa .Lk_ipt+16(%rip), %xmm0 # ipthi
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| 105 | pshufb %xmm1, %xmm0
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| 106 | pxor %xmm5, %xmm2
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| 107 | add \$16, %r9
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| 108 | pxor %xmm2, %xmm0
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| 109 | lea .Lk_mc_backward(%rip),%r10
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| 110 | jmp .Lenc_entry
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| 111 |
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| 112 | .align 16
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| 113 | .Lenc_loop:
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| 114 | # middle of middle round
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| 115 | movdqa %xmm13, %xmm4 # 4 : sb1u
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| 116 | movdqa %xmm12, %xmm0 # 0 : sb1t
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| 117 | pshufb %xmm2, %xmm4 # 4 = sb1u
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| 118 | pshufb %xmm3, %xmm0 # 0 = sb1t
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| 119 | pxor %xmm5, %xmm4 # 4 = sb1u + k
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| 120 | movdqa %xmm15, %xmm5 # 4 : sb2u
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| 121 | pxor %xmm4, %xmm0 # 0 = A
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| 122 | movdqa -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[]
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| 123 | pshufb %xmm2, %xmm5 # 4 = sb2u
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| 124 | movdqa (%r11,%r10), %xmm4 # .Lk_mc_backward[]
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| 125 | movdqa %xmm14, %xmm2 # 2 : sb2t
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| 126 | pshufb %xmm3, %xmm2 # 2 = sb2t
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| 127 | movdqa %xmm0, %xmm3 # 3 = A
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| 128 | pxor %xmm5, %xmm2 # 2 = 2A
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| 129 | pshufb %xmm1, %xmm0 # 0 = B
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| 130 | add \$16, %r9 # next key
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| 131 | pxor %xmm2, %xmm0 # 0 = 2A+B
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| 132 | pshufb %xmm4, %xmm3 # 3 = D
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| 133 | add \$16, %r11 # next mc
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| 134 | pxor %xmm0, %xmm3 # 3 = 2A+B+D
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| 135 | pshufb %xmm1, %xmm0 # 0 = 2B+C
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| 136 | and \$0x30, %r11 # ... mod 4
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| 137 | sub \$1,%rax # nr--
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| 138 | pxor %xmm3, %xmm0 # 0 = 2A+3B+C+D
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| 139 |
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| 140 | .Lenc_entry:
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| 141 | # top of round
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| 142 | movdqa %xmm9, %xmm1 # 1 : i
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| 143 | movdqa %xmm11, %xmm5 # 2 : a/k
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| 144 | pandn %xmm0, %xmm1 # 1 = i<<4
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| 145 | psrld \$4, %xmm1 # 1 = i
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| 146 | pand %xmm9, %xmm0 # 0 = k
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| 147 | pshufb %xmm0, %xmm5 # 2 = a/k
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| 148 | movdqa %xmm10, %xmm3 # 3 : 1/i
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| 149 | pxor %xmm1, %xmm0 # 0 = j
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| 150 | pshufb %xmm1, %xmm3 # 3 = 1/i
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| 151 | movdqa %xmm10, %xmm4 # 4 : 1/j
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| 152 | pxor %xmm5, %xmm3 # 3 = iak = 1/i + a/k
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| 153 | pshufb %xmm0, %xmm4 # 4 = 1/j
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| 154 | movdqa %xmm10, %xmm2 # 2 : 1/iak
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| 155 | pxor %xmm5, %xmm4 # 4 = jak = 1/j + a/k
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| 156 | pshufb %xmm3, %xmm2 # 2 = 1/iak
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| 157 | movdqa %xmm10, %xmm3 # 3 : 1/jak
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| 158 | pxor %xmm0, %xmm2 # 2 = io
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| 159 | pshufb %xmm4, %xmm3 # 3 = 1/jak
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| 160 | movdqu (%r9), %xmm5
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| 161 | pxor %xmm1, %xmm3 # 3 = jo
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| 162 | jnz .Lenc_loop
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| 163 |
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| 164 | # middle of last round
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| 165 | movdqa -0x60(%r10), %xmm4 # 3 : sbou .Lk_sbo
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| 166 | movdqa -0x50(%r10), %xmm0 # 0 : sbot .Lk_sbo+16
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| 167 | pshufb %xmm2, %xmm4 # 4 = sbou
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| 168 | pxor %xmm5, %xmm4 # 4 = sb1u + k
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| 169 | pshufb %xmm3, %xmm0 # 0 = sb1t
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| 170 | movdqa 0x40(%r11,%r10), %xmm1 # .Lk_sr[]
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| 171 | pxor %xmm4, %xmm0 # 0 = A
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| 172 | pshufb %xmm1, %xmm0
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| 173 | ret
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| 174 | .size _vpaes_encrypt_core,.-_vpaes_encrypt_core
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| 175 |
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| 176 | ##
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| 177 | ## Decryption core
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| 178 | ##
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| 179 | ## Same API as encryption core.
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| 180 | ##
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| 181 | .type _vpaes_decrypt_core,\@abi-omnipotent
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| 182 | .align 16
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| 183 | _vpaes_decrypt_core:
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| 184 | mov %rdx, %r9 # load key
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| 185 | mov 240(%rdx),%eax
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| 186 | movdqa %xmm9, %xmm1
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| 187 | movdqa .Lk_dipt(%rip), %xmm2 # iptlo
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| 188 | pandn %xmm0, %xmm1
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| 189 | mov %rax, %r11
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| 190 | psrld \$4, %xmm1
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| 191 | movdqu (%r9), %xmm5 # round0 key
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| 192 | shl \$4, %r11
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| 193 | pand %xmm9, %xmm0
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| 194 | pshufb %xmm0, %xmm2
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| 195 | movdqa .Lk_dipt+16(%rip), %xmm0 # ipthi
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| 196 | xor \$0x30, %r11
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| 197 | lea .Lk_dsbd(%rip),%r10
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| 198 | pshufb %xmm1, %xmm0
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| 199 | and \$0x30, %r11
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| 200 | pxor %xmm5, %xmm2
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| 201 | movdqa .Lk_mc_forward+48(%rip), %xmm5
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| 202 | pxor %xmm2, %xmm0
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| 203 | add \$16, %r9
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| 204 | add %r10, %r11
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| 205 | jmp .Ldec_entry
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| 206 |
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| 207 | .align 16
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| 208 | .Ldec_loop:
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| 209 | ##
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| 210 | ## Inverse mix columns
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| 211 | ##
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| 212 | movdqa -0x20(%r10),%xmm4 # 4 : sb9u
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| 213 | movdqa -0x10(%r10),%xmm1 # 0 : sb9t
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| 214 | pshufb %xmm2, %xmm4 # 4 = sb9u
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| 215 | pshufb %xmm3, %xmm1 # 0 = sb9t
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| 216 | pxor %xmm4, %xmm0
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| 217 | movdqa 0x00(%r10),%xmm4 # 4 : sbdu
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| 218 | pxor %xmm1, %xmm0 # 0 = ch
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| 219 | movdqa 0x10(%r10),%xmm1 # 0 : sbdt
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| 220 |
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| 221 | pshufb %xmm2, %xmm4 # 4 = sbdu
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| 222 | pshufb %xmm5, %xmm0 # MC ch
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| 223 | pshufb %xmm3, %xmm1 # 0 = sbdt
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| 224 | pxor %xmm4, %xmm0 # 4 = ch
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| 225 | movdqa 0x20(%r10),%xmm4 # 4 : sbbu
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| 226 | pxor %xmm1, %xmm0 # 0 = ch
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| 227 | movdqa 0x30(%r10),%xmm1 # 0 : sbbt
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| 228 |
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| 229 | pshufb %xmm2, %xmm4 # 4 = sbbu
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| 230 | pshufb %xmm5, %xmm0 # MC ch
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| 231 | pshufb %xmm3, %xmm1 # 0 = sbbt
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| 232 | pxor %xmm4, %xmm0 # 4 = ch
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| 233 | movdqa 0x40(%r10),%xmm4 # 4 : sbeu
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| 234 | pxor %xmm1, %xmm0 # 0 = ch
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| 235 | movdqa 0x50(%r10),%xmm1 # 0 : sbet
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| 236 |
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| 237 | pshufb %xmm2, %xmm4 # 4 = sbeu
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| 238 | pshufb %xmm5, %xmm0 # MC ch
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| 239 | pshufb %xmm3, %xmm1 # 0 = sbet
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| 240 | pxor %xmm4, %xmm0 # 4 = ch
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| 241 | add \$16, %r9 # next round key
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| 242 | palignr \$12, %xmm5, %xmm5
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| 243 | pxor %xmm1, %xmm0 # 0 = ch
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| 244 | sub \$1,%rax # nr--
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| 245 |
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| 246 | .Ldec_entry:
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| 247 | # top of round
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| 248 | movdqa %xmm9, %xmm1 # 1 : i
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| 249 | pandn %xmm0, %xmm1 # 1 = i<<4
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| 250 | movdqa %xmm11, %xmm2 # 2 : a/k
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| 251 | psrld \$4, %xmm1 # 1 = i
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| 252 | pand %xmm9, %xmm0 # 0 = k
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| 253 | pshufb %xmm0, %xmm2 # 2 = a/k
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| 254 | movdqa %xmm10, %xmm3 # 3 : 1/i
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| 255 | pxor %xmm1, %xmm0 # 0 = j
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| 256 | pshufb %xmm1, %xmm3 # 3 = 1/i
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| 257 | movdqa %xmm10, %xmm4 # 4 : 1/j
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| 258 | pxor %xmm2, %xmm3 # 3 = iak = 1/i + a/k
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| 259 | pshufb %xmm0, %xmm4 # 4 = 1/j
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| 260 | pxor %xmm2, %xmm4 # 4 = jak = 1/j + a/k
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| 261 | movdqa %xmm10, %xmm2 # 2 : 1/iak
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| 262 | pshufb %xmm3, %xmm2 # 2 = 1/iak
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| 263 | movdqa %xmm10, %xmm3 # 3 : 1/jak
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| 264 | pxor %xmm0, %xmm2 # 2 = io
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| 265 | pshufb %xmm4, %xmm3 # 3 = 1/jak
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| 266 | movdqu (%r9), %xmm0
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| 267 | pxor %xmm1, %xmm3 # 3 = jo
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| 268 | jnz .Ldec_loop
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| 269 |
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| 270 | # middle of last round
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| 271 | movdqa 0x60(%r10), %xmm4 # 3 : sbou
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| 272 | pshufb %xmm2, %xmm4 # 4 = sbou
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| 273 | pxor %xmm0, %xmm4 # 4 = sb1u + k
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| 274 | movdqa 0x70(%r10), %xmm0 # 0 : sbot
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| 275 | movdqa -0x160(%r11), %xmm2 # .Lk_sr-.Lk_dsbd=-0x160
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| 276 | pshufb %xmm3, %xmm0 # 0 = sb1t
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| 277 | pxor %xmm4, %xmm0 # 0 = A
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| 278 | pshufb %xmm2, %xmm0
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| 279 | ret
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| 280 | .size _vpaes_decrypt_core,.-_vpaes_decrypt_core
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| 281 |
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| 282 | ########################################################
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| 283 | ## ##
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| 284 | ## AES key schedule ##
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| 285 | ## ##
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| 286 | ########################################################
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| 287 | .type _vpaes_schedule_core,\@abi-omnipotent
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| 288 | .align 16
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| 289 | _vpaes_schedule_core:
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| 290 | # rdi = key
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| 291 | # rsi = size in bits
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| 292 | # rdx = buffer
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| 293 | # rcx = direction. 0=encrypt, 1=decrypt
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| 294 |
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| 295 | call _vpaes_preheat # load the tables
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| 296 | movdqa .Lk_rcon(%rip), %xmm8 # load rcon
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| 297 | movdqu (%rdi), %xmm0 # load key (unaligned)
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| 298 |
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| 299 | # input transform
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| 300 | movdqa %xmm0, %xmm3
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| 301 | lea .Lk_ipt(%rip), %r11
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| 302 | call _vpaes_schedule_transform
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| 303 | movdqa %xmm0, %xmm7
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| 304 |
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| 305 | lea .Lk_sr(%rip),%r10
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| 306 | test %rcx, %rcx
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| 307 | jnz .Lschedule_am_decrypting
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| 308 |
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| 309 | # encrypting, output zeroth round key after transform
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| 310 | movdqu %xmm0, (%rdx)
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| 311 | jmp .Lschedule_go
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| 312 |
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| 313 | .Lschedule_am_decrypting:
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| 314 | # decrypting, output zeroth round key after shiftrows
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| 315 | movdqa (%r8,%r10),%xmm1
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| 316 | pshufb %xmm1, %xmm3
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| 317 | movdqu %xmm3, (%rdx)
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| 318 | xor \$0x30, %r8
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| 319 |
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| 320 | .Lschedule_go:
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| 321 | cmp \$192, %esi
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| 322 | ja .Lschedule_256
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| 323 | je .Lschedule_192
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| 324 | # 128: fall though
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| 325 |
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| 326 | ##
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| 327 | ## .schedule_128
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| 328 | ##
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| 329 | ## 128-bit specific part of key schedule.
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| 330 | ##
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| 331 | ## This schedule is really simple, because all its parts
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| 332 | ## are accomplished by the subroutines.
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| 333 | ##
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| 334 | .Lschedule_128:
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| 335 | mov \$10, %esi
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| 336 |
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| 337 | .Loop_schedule_128:
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| 338 | call _vpaes_schedule_round
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| 339 | dec %rsi
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| 340 | jz .Lschedule_mangle_last
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| 341 | call _vpaes_schedule_mangle # write output
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| 342 | jmp .Loop_schedule_128
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| 343 |
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| 344 | ##
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| 345 | ## .aes_schedule_192
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| 346 | ##
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| 347 | ## 192-bit specific part of key schedule.
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| 348 | ##
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| 349 | ## The main body of this schedule is the same as the 128-bit
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| 350 | ## schedule, but with more smearing. The long, high side is
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| 351 | ## stored in %xmm7 as before, and the short, low side is in
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| 352 | ## the high bits of %xmm6.
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| 353 | ##
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| 354 | ## This schedule is somewhat nastier, however, because each
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| 355 | ## round produces 192 bits of key material, or 1.5 round keys.
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| 356 | ## Therefore, on each cycle we do 2 rounds and produce 3 round
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| 357 | ## keys.
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| 358 | ##
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| 359 | .align 16
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| 360 | .Lschedule_192:
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| 361 | movdqu 8(%rdi),%xmm0 # load key part 2 (very unaligned)
|
|---|
| 362 | call _vpaes_schedule_transform # input transform
|
|---|
| 363 | movdqa %xmm0, %xmm6 # save short part
|
|---|
| 364 | pxor %xmm4, %xmm4 # clear 4
|
|---|
| 365 | movhlps %xmm4, %xmm6 # clobber low side with zeros
|
|---|
| 366 | mov \$4, %esi
|
|---|
| 367 |
|
|---|
| 368 | .Loop_schedule_192:
|
|---|
| 369 | call _vpaes_schedule_round
|
|---|
| 370 | palignr \$8,%xmm6,%xmm0
|
|---|
| 371 | call _vpaes_schedule_mangle # save key n
|
|---|
| 372 | call _vpaes_schedule_192_smear
|
|---|
| 373 | call _vpaes_schedule_mangle # save key n+1
|
|---|
| 374 | call _vpaes_schedule_round
|
|---|
| 375 | dec %rsi
|
|---|
| 376 | jz .Lschedule_mangle_last
|
|---|
| 377 | call _vpaes_schedule_mangle # save key n+2
|
|---|
| 378 | call _vpaes_schedule_192_smear
|
|---|
| 379 | jmp .Loop_schedule_192
|
|---|
| 380 |
|
|---|
| 381 | ##
|
|---|
| 382 | ## .aes_schedule_256
|
|---|
| 383 | ##
|
|---|
| 384 | ## 256-bit specific part of key schedule.
|
|---|
| 385 | ##
|
|---|
| 386 | ## The structure here is very similar to the 128-bit
|
|---|
| 387 | ## schedule, but with an additional "low side" in
|
|---|
| 388 | ## %xmm6. The low side's rounds are the same as the
|
|---|
| 389 | ## high side's, except no rcon and no rotation.
|
|---|
| 390 | ##
|
|---|
| 391 | .align 16
|
|---|
| 392 | .Lschedule_256:
|
|---|
| 393 | movdqu 16(%rdi),%xmm0 # load key part 2 (unaligned)
|
|---|
| 394 | call _vpaes_schedule_transform # input transform
|
|---|
| 395 | mov \$7, %esi
|
|---|
| 396 |
|
|---|
| 397 | .Loop_schedule_256:
|
|---|
| 398 | call _vpaes_schedule_mangle # output low result
|
|---|
| 399 | movdqa %xmm0, %xmm6 # save cur_lo in xmm6
|
|---|
| 400 |
|
|---|
| 401 | # high round
|
|---|
| 402 | call _vpaes_schedule_round
|
|---|
| 403 | dec %rsi
|
|---|
| 404 | jz .Lschedule_mangle_last
|
|---|
| 405 | call _vpaes_schedule_mangle
|
|---|
| 406 |
|
|---|
| 407 | # low round. swap xmm7 and xmm6
|
|---|
| 408 | pshufd \$0xFF, %xmm0, %xmm0
|
|---|
| 409 | movdqa %xmm7, %xmm5
|
|---|
| 410 | movdqa %xmm6, %xmm7
|
|---|
| 411 | call _vpaes_schedule_low_round
|
|---|
| 412 | movdqa %xmm5, %xmm7
|
|---|
| 413 |
|
|---|
| 414 | jmp .Loop_schedule_256
|
|---|
| 415 |
|
|---|
| 416 |
|
|---|
| 417 | ##
|
|---|
| 418 | ## .aes_schedule_mangle_last
|
|---|
| 419 | ##
|
|---|
| 420 | ## Mangler for last round of key schedule
|
|---|
| 421 | ## Mangles %xmm0
|
|---|
| 422 | ## when encrypting, outputs out(%xmm0) ^ 63
|
|---|
| 423 | ## when decrypting, outputs unskew(%xmm0)
|
|---|
| 424 | ##
|
|---|
| 425 | ## Always called right before return... jumps to cleanup and exits
|
|---|
| 426 | ##
|
|---|
| 427 | .align 16
|
|---|
| 428 | .Lschedule_mangle_last:
|
|---|
| 429 | # schedule last round key from xmm0
|
|---|
| 430 | lea .Lk_deskew(%rip),%r11 # prepare to deskew
|
|---|
| 431 | test %rcx, %rcx
|
|---|
| 432 | jnz .Lschedule_mangle_last_dec
|
|---|
| 433 |
|
|---|
| 434 | # encrypting
|
|---|
| 435 | movdqa (%r8,%r10),%xmm1
|
|---|
| 436 | pshufb %xmm1, %xmm0 # output permute
|
|---|
| 437 | lea .Lk_opt(%rip), %r11 # prepare to output transform
|
|---|
| 438 | add \$32, %rdx
|
|---|
| 439 |
|
|---|
| 440 | .Lschedule_mangle_last_dec:
|
|---|
| 441 | add \$-16, %rdx
|
|---|
| 442 | pxor .Lk_s63(%rip), %xmm0
|
|---|
| 443 | call _vpaes_schedule_transform # output transform
|
|---|
| 444 | movdqu %xmm0, (%rdx) # save last key
|
|---|
| 445 |
|
|---|
| 446 | # cleanup
|
|---|
| 447 | pxor %xmm0, %xmm0
|
|---|
| 448 | pxor %xmm1, %xmm1
|
|---|
| 449 | pxor %xmm2, %xmm2
|
|---|
| 450 | pxor %xmm3, %xmm3
|
|---|
| 451 | pxor %xmm4, %xmm4
|
|---|
| 452 | pxor %xmm5, %xmm5
|
|---|
| 453 | pxor %xmm6, %xmm6
|
|---|
| 454 | pxor %xmm7, %xmm7
|
|---|
| 455 | ret
|
|---|
| 456 | .size _vpaes_schedule_core,.-_vpaes_schedule_core
|
|---|
| 457 |
|
|---|
| 458 | ##
|
|---|
| 459 | ## .aes_schedule_192_smear
|
|---|
| 460 | ##
|
|---|
| 461 | ## Smear the short, low side in the 192-bit key schedule.
|
|---|
| 462 | ##
|
|---|
| 463 | ## Inputs:
|
|---|
| 464 | ## %xmm7: high side, b a x y
|
|---|
| 465 | ## %xmm6: low side, d c 0 0
|
|---|
| 466 | ## %xmm13: 0
|
|---|
| 467 | ##
|
|---|
| 468 | ## Outputs:
|
|---|
| 469 | ## %xmm6: b+c+d b+c 0 0
|
|---|
| 470 | ## %xmm0: b+c+d b+c b a
|
|---|
| 471 | ##
|
|---|
| 472 | .type _vpaes_schedule_192_smear,\@abi-omnipotent
|
|---|
| 473 | .align 16
|
|---|
| 474 | _vpaes_schedule_192_smear:
|
|---|
| 475 | pshufd \$0x80, %xmm6, %xmm1 # d c 0 0 -> c 0 0 0
|
|---|
| 476 | pshufd \$0xFE, %xmm7, %xmm0 # b a _ _ -> b b b a
|
|---|
| 477 | pxor %xmm1, %xmm6 # -> c+d c 0 0
|
|---|
| 478 | pxor %xmm1, %xmm1
|
|---|
| 479 | pxor %xmm0, %xmm6 # -> b+c+d b+c b a
|
|---|
| 480 | movdqa %xmm6, %xmm0
|
|---|
| 481 | movhlps %xmm1, %xmm6 # clobber low side with zeros
|
|---|
| 482 | ret
|
|---|
| 483 | .size _vpaes_schedule_192_smear,.-_vpaes_schedule_192_smear
|
|---|
| 484 |
|
|---|
| 485 | ##
|
|---|
| 486 | ## .aes_schedule_round
|
|---|
| 487 | ##
|
|---|
| 488 | ## Runs one main round of the key schedule on %xmm0, %xmm7
|
|---|
| 489 | ##
|
|---|
| 490 | ## Specifically, runs subbytes on the high dword of %xmm0
|
|---|
| 491 | ## then rotates it by one byte and xors into the low dword of
|
|---|
| 492 | ## %xmm7.
|
|---|
| 493 | ##
|
|---|
| 494 | ## Adds rcon from low byte of %xmm8, then rotates %xmm8 for
|
|---|
| 495 | ## next rcon.
|
|---|
| 496 | ##
|
|---|
| 497 | ## Smears the dwords of %xmm7 by xoring the low into the
|
|---|
| 498 | ## second low, result into third, result into highest.
|
|---|
| 499 | ##
|
|---|
| 500 | ## Returns results in %xmm7 = %xmm0.
|
|---|
| 501 | ## Clobbers %xmm1-%xmm4, %r11.
|
|---|
| 502 | ##
|
|---|
| 503 | .type _vpaes_schedule_round,\@abi-omnipotent
|
|---|
| 504 | .align 16
|
|---|
| 505 | _vpaes_schedule_round:
|
|---|
| 506 | # extract rcon from xmm8
|
|---|
| 507 | pxor %xmm1, %xmm1
|
|---|
| 508 | palignr \$15, %xmm8, %xmm1
|
|---|
| 509 | palignr \$15, %xmm8, %xmm8
|
|---|
| 510 | pxor %xmm1, %xmm7
|
|---|
| 511 |
|
|---|
| 512 | # rotate
|
|---|
| 513 | pshufd \$0xFF, %xmm0, %xmm0
|
|---|
| 514 | palignr \$1, %xmm0, %xmm0
|
|---|
| 515 |
|
|---|
| 516 | # fall through...
|
|---|
| 517 |
|
|---|
| 518 | # low round: same as high round, but no rotation and no rcon.
|
|---|
| 519 | _vpaes_schedule_low_round:
|
|---|
| 520 | # smear xmm7
|
|---|
| 521 | movdqa %xmm7, %xmm1
|
|---|
| 522 | pslldq \$4, %xmm7
|
|---|
| 523 | pxor %xmm1, %xmm7
|
|---|
| 524 | movdqa %xmm7, %xmm1
|
|---|
| 525 | pslldq \$8, %xmm7
|
|---|
| 526 | pxor %xmm1, %xmm7
|
|---|
| 527 | pxor .Lk_s63(%rip), %xmm7
|
|---|
| 528 |
|
|---|
| 529 | # subbytes
|
|---|
| 530 | movdqa %xmm9, %xmm1
|
|---|
| 531 | pandn %xmm0, %xmm1
|
|---|
| 532 | psrld \$4, %xmm1 # 1 = i
|
|---|
| 533 | pand %xmm9, %xmm0 # 0 = k
|
|---|
| 534 | movdqa %xmm11, %xmm2 # 2 : a/k
|
|---|
| 535 | pshufb %xmm0, %xmm2 # 2 = a/k
|
|---|
| 536 | pxor %xmm1, %xmm0 # 0 = j
|
|---|
| 537 | movdqa %xmm10, %xmm3 # 3 : 1/i
|
|---|
| 538 | pshufb %xmm1, %xmm3 # 3 = 1/i
|
|---|
| 539 | pxor %xmm2, %xmm3 # 3 = iak = 1/i + a/k
|
|---|
| 540 | movdqa %xmm10, %xmm4 # 4 : 1/j
|
|---|
| 541 | pshufb %xmm0, %xmm4 # 4 = 1/j
|
|---|
| 542 | pxor %xmm2, %xmm4 # 4 = jak = 1/j + a/k
|
|---|
| 543 | movdqa %xmm10, %xmm2 # 2 : 1/iak
|
|---|
| 544 | pshufb %xmm3, %xmm2 # 2 = 1/iak
|
|---|
| 545 | pxor %xmm0, %xmm2 # 2 = io
|
|---|
| 546 | movdqa %xmm10, %xmm3 # 3 : 1/jak
|
|---|
| 547 | pshufb %xmm4, %xmm3 # 3 = 1/jak
|
|---|
| 548 | pxor %xmm1, %xmm3 # 3 = jo
|
|---|
| 549 | movdqa %xmm13, %xmm4 # 4 : sbou
|
|---|
| 550 | pshufb %xmm2, %xmm4 # 4 = sbou
|
|---|
| 551 | movdqa %xmm12, %xmm0 # 0 : sbot
|
|---|
| 552 | pshufb %xmm3, %xmm0 # 0 = sb1t
|
|---|
| 553 | pxor %xmm4, %xmm0 # 0 = sbox output
|
|---|
| 554 |
|
|---|
| 555 | # add in smeared stuff
|
|---|
| 556 | pxor %xmm7, %xmm0
|
|---|
| 557 | movdqa %xmm0, %xmm7
|
|---|
| 558 | ret
|
|---|
| 559 | .size _vpaes_schedule_round,.-_vpaes_schedule_round
|
|---|
| 560 |
|
|---|
| 561 | ##
|
|---|
| 562 | ## .aes_schedule_transform
|
|---|
| 563 | ##
|
|---|
| 564 | ## Linear-transform %xmm0 according to tables at (%r11)
|
|---|
| 565 | ##
|
|---|
| 566 | ## Requires that %xmm9 = 0x0F0F... as in preheat
|
|---|
| 567 | ## Output in %xmm0
|
|---|
| 568 | ## Clobbers %xmm1, %xmm2
|
|---|
| 569 | ##
|
|---|
| 570 | .type _vpaes_schedule_transform,\@abi-omnipotent
|
|---|
| 571 | .align 16
|
|---|
| 572 | _vpaes_schedule_transform:
|
|---|
| 573 | movdqa %xmm9, %xmm1
|
|---|
| 574 | pandn %xmm0, %xmm1
|
|---|
| 575 | psrld \$4, %xmm1
|
|---|
| 576 | pand %xmm9, %xmm0
|
|---|
| 577 | movdqa (%r11), %xmm2 # lo
|
|---|
| 578 | pshufb %xmm0, %xmm2
|
|---|
| 579 | movdqa 16(%r11), %xmm0 # hi
|
|---|
| 580 | pshufb %xmm1, %xmm0
|
|---|
| 581 | pxor %xmm2, %xmm0
|
|---|
| 582 | ret
|
|---|
| 583 | .size _vpaes_schedule_transform,.-_vpaes_schedule_transform
|
|---|
| 584 |
|
|---|
| 585 | ##
|
|---|
| 586 | ## .aes_schedule_mangle
|
|---|
| 587 | ##
|
|---|
| 588 | ## Mangle xmm0 from (basis-transformed) standard version
|
|---|
| 589 | ## to our version.
|
|---|
| 590 | ##
|
|---|
| 591 | ## On encrypt,
|
|---|
| 592 | ## xor with 0x63
|
|---|
| 593 | ## multiply by circulant 0,1,1,1
|
|---|
| 594 | ## apply shiftrows transform
|
|---|
| 595 | ##
|
|---|
| 596 | ## On decrypt,
|
|---|
| 597 | ## xor with 0x63
|
|---|
| 598 | ## multiply by "inverse mixcolumns" circulant E,B,D,9
|
|---|
| 599 | ## deskew
|
|---|
| 600 | ## apply shiftrows transform
|
|---|
| 601 | ##
|
|---|
| 602 | ##
|
|---|
| 603 | ## Writes out to (%rdx), and increments or decrements it
|
|---|
| 604 | ## Keeps track of round number mod 4 in %r8
|
|---|
| 605 | ## Preserves xmm0
|
|---|
| 606 | ## Clobbers xmm1-xmm5
|
|---|
| 607 | ##
|
|---|
| 608 | .type _vpaes_schedule_mangle,\@abi-omnipotent
|
|---|
| 609 | .align 16
|
|---|
| 610 | _vpaes_schedule_mangle:
|
|---|
| 611 | movdqa %xmm0, %xmm4 # save xmm0 for later
|
|---|
| 612 | movdqa .Lk_mc_forward(%rip),%xmm5
|
|---|
| 613 | test %rcx, %rcx
|
|---|
| 614 | jnz .Lschedule_mangle_dec
|
|---|
| 615 |
|
|---|
| 616 | # encrypting
|
|---|
| 617 | add \$16, %rdx
|
|---|
| 618 | pxor .Lk_s63(%rip),%xmm4
|
|---|
| 619 | pshufb %xmm5, %xmm4
|
|---|
| 620 | movdqa %xmm4, %xmm3
|
|---|
| 621 | pshufb %xmm5, %xmm4
|
|---|
| 622 | pxor %xmm4, %xmm3
|
|---|
| 623 | pshufb %xmm5, %xmm4
|
|---|
| 624 | pxor %xmm4, %xmm3
|
|---|
| 625 |
|
|---|
| 626 | jmp .Lschedule_mangle_both
|
|---|
| 627 | .align 16
|
|---|
| 628 | .Lschedule_mangle_dec:
|
|---|
| 629 | # inverse mix columns
|
|---|
| 630 | lea .Lk_dksd(%rip),%r11
|
|---|
| 631 | movdqa %xmm9, %xmm1
|
|---|
| 632 | pandn %xmm4, %xmm1
|
|---|
| 633 | psrld \$4, %xmm1 # 1 = hi
|
|---|
| 634 | pand %xmm9, %xmm4 # 4 = lo
|
|---|
| 635 |
|
|---|
| 636 | movdqa 0x00(%r11), %xmm2
|
|---|
| 637 | pshufb %xmm4, %xmm2
|
|---|
| 638 | movdqa 0x10(%r11), %xmm3
|
|---|
| 639 | pshufb %xmm1, %xmm3
|
|---|
| 640 | pxor %xmm2, %xmm3
|
|---|
| 641 | pshufb %xmm5, %xmm3
|
|---|
| 642 |
|
|---|
| 643 | movdqa 0x20(%r11), %xmm2
|
|---|
| 644 | pshufb %xmm4, %xmm2
|
|---|
| 645 | pxor %xmm3, %xmm2
|
|---|
| 646 | movdqa 0x30(%r11), %xmm3
|
|---|
| 647 | pshufb %xmm1, %xmm3
|
|---|
| 648 | pxor %xmm2, %xmm3
|
|---|
| 649 | pshufb %xmm5, %xmm3
|
|---|
| 650 |
|
|---|
| 651 | movdqa 0x40(%r11), %xmm2
|
|---|
| 652 | pshufb %xmm4, %xmm2
|
|---|
| 653 | pxor %xmm3, %xmm2
|
|---|
| 654 | movdqa 0x50(%r11), %xmm3
|
|---|
| 655 | pshufb %xmm1, %xmm3
|
|---|
| 656 | pxor %xmm2, %xmm3
|
|---|
| 657 | pshufb %xmm5, %xmm3
|
|---|
| 658 |
|
|---|
| 659 | movdqa 0x60(%r11), %xmm2
|
|---|
| 660 | pshufb %xmm4, %xmm2
|
|---|
| 661 | pxor %xmm3, %xmm2
|
|---|
| 662 | movdqa 0x70(%r11), %xmm3
|
|---|
| 663 | pshufb %xmm1, %xmm3
|
|---|
| 664 | pxor %xmm2, %xmm3
|
|---|
| 665 |
|
|---|
| 666 | add \$-16, %rdx
|
|---|
| 667 |
|
|---|
| 668 | .Lschedule_mangle_both:
|
|---|
| 669 | movdqa (%r8,%r10),%xmm1
|
|---|
| 670 | pshufb %xmm1,%xmm3
|
|---|
| 671 | add \$-16, %r8
|
|---|
| 672 | and \$0x30, %r8
|
|---|
| 673 | movdqu %xmm3, (%rdx)
|
|---|
| 674 | ret
|
|---|
| 675 | .size _vpaes_schedule_mangle,.-_vpaes_schedule_mangle
|
|---|
| 676 |
|
|---|
| 677 | #
|
|---|
| 678 | # Interface to OpenSSL
|
|---|
| 679 | #
|
|---|
| 680 | .globl ${PREFIX}_set_encrypt_key
|
|---|
| 681 | .type ${PREFIX}_set_encrypt_key,\@function,3
|
|---|
| 682 | .align 16
|
|---|
| 683 | ${PREFIX}_set_encrypt_key:
|
|---|
| 684 | ___
|
|---|
| 685 | $code.=<<___ if ($win64);
|
|---|
| 686 | lea -0xb8(%rsp),%rsp
|
|---|
| 687 | movaps %xmm6,0x10(%rsp)
|
|---|
| 688 | movaps %xmm7,0x20(%rsp)
|
|---|
| 689 | movaps %xmm8,0x30(%rsp)
|
|---|
| 690 | movaps %xmm9,0x40(%rsp)
|
|---|
| 691 | movaps %xmm10,0x50(%rsp)
|
|---|
| 692 | movaps %xmm11,0x60(%rsp)
|
|---|
| 693 | movaps %xmm12,0x70(%rsp)
|
|---|
| 694 | movaps %xmm13,0x80(%rsp)
|
|---|
| 695 | movaps %xmm14,0x90(%rsp)
|
|---|
| 696 | movaps %xmm15,0xa0(%rsp)
|
|---|
| 697 | .Lenc_key_body:
|
|---|
| 698 | ___
|
|---|
| 699 | $code.=<<___;
|
|---|
| 700 | mov %esi,%eax
|
|---|
| 701 | shr \$5,%eax
|
|---|
| 702 | add \$5,%eax
|
|---|
| 703 | mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5;
|
|---|
| 704 |
|
|---|
| 705 | mov \$0,%ecx
|
|---|
| 706 | mov \$0x30,%r8d
|
|---|
| 707 | call _vpaes_schedule_core
|
|---|
| 708 | ___
|
|---|
| 709 | $code.=<<___ if ($win64);
|
|---|
| 710 | movaps 0x10(%rsp),%xmm6
|
|---|
| 711 | movaps 0x20(%rsp),%xmm7
|
|---|
| 712 | movaps 0x30(%rsp),%xmm8
|
|---|
| 713 | movaps 0x40(%rsp),%xmm9
|
|---|
| 714 | movaps 0x50(%rsp),%xmm10
|
|---|
| 715 | movaps 0x60(%rsp),%xmm11
|
|---|
| 716 | movaps 0x70(%rsp),%xmm12
|
|---|
| 717 | movaps 0x80(%rsp),%xmm13
|
|---|
| 718 | movaps 0x90(%rsp),%xmm14
|
|---|
| 719 | movaps 0xa0(%rsp),%xmm15
|
|---|
| 720 | lea 0xb8(%rsp),%rsp
|
|---|
| 721 | .Lenc_key_epilogue:
|
|---|
| 722 | ___
|
|---|
| 723 | $code.=<<___;
|
|---|
| 724 | xor %eax,%eax
|
|---|
| 725 | ret
|
|---|
| 726 | .size ${PREFIX}_set_encrypt_key,.-${PREFIX}_set_encrypt_key
|
|---|
| 727 |
|
|---|
| 728 | .globl ${PREFIX}_set_decrypt_key
|
|---|
| 729 | .type ${PREFIX}_set_decrypt_key,\@function,3
|
|---|
| 730 | .align 16
|
|---|
| 731 | ${PREFIX}_set_decrypt_key:
|
|---|
| 732 | ___
|
|---|
| 733 | $code.=<<___ if ($win64);
|
|---|
| 734 | lea -0xb8(%rsp),%rsp
|
|---|
| 735 | movaps %xmm6,0x10(%rsp)
|
|---|
| 736 | movaps %xmm7,0x20(%rsp)
|
|---|
| 737 | movaps %xmm8,0x30(%rsp)
|
|---|
| 738 | movaps %xmm9,0x40(%rsp)
|
|---|
| 739 | movaps %xmm10,0x50(%rsp)
|
|---|
| 740 | movaps %xmm11,0x60(%rsp)
|
|---|
| 741 | movaps %xmm12,0x70(%rsp)
|
|---|
| 742 | movaps %xmm13,0x80(%rsp)
|
|---|
| 743 | movaps %xmm14,0x90(%rsp)
|
|---|
| 744 | movaps %xmm15,0xa0(%rsp)
|
|---|
| 745 | .Ldec_key_body:
|
|---|
| 746 | ___
|
|---|
| 747 | $code.=<<___;
|
|---|
| 748 | mov %esi,%eax
|
|---|
| 749 | shr \$5,%eax
|
|---|
| 750 | add \$5,%eax
|
|---|
| 751 | mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5;
|
|---|
| 752 | shl \$4,%eax
|
|---|
| 753 | lea 16(%rdx,%rax),%rdx
|
|---|
| 754 |
|
|---|
| 755 | mov \$1,%ecx
|
|---|
| 756 | mov %esi,%r8d
|
|---|
| 757 | shr \$1,%r8d
|
|---|
| 758 | and \$32,%r8d
|
|---|
| 759 | xor \$32,%r8d # nbits==192?0:32
|
|---|
| 760 | call _vpaes_schedule_core
|
|---|
| 761 | ___
|
|---|
| 762 | $code.=<<___ if ($win64);
|
|---|
| 763 | movaps 0x10(%rsp),%xmm6
|
|---|
| 764 | movaps 0x20(%rsp),%xmm7
|
|---|
| 765 | movaps 0x30(%rsp),%xmm8
|
|---|
| 766 | movaps 0x40(%rsp),%xmm9
|
|---|
| 767 | movaps 0x50(%rsp),%xmm10
|
|---|
| 768 | movaps 0x60(%rsp),%xmm11
|
|---|
| 769 | movaps 0x70(%rsp),%xmm12
|
|---|
| 770 | movaps 0x80(%rsp),%xmm13
|
|---|
| 771 | movaps 0x90(%rsp),%xmm14
|
|---|
| 772 | movaps 0xa0(%rsp),%xmm15
|
|---|
| 773 | lea 0xb8(%rsp),%rsp
|
|---|
| 774 | .Ldec_key_epilogue:
|
|---|
| 775 | ___
|
|---|
| 776 | $code.=<<___;
|
|---|
| 777 | xor %eax,%eax
|
|---|
| 778 | ret
|
|---|
| 779 | .size ${PREFIX}_set_decrypt_key,.-${PREFIX}_set_decrypt_key
|
|---|
| 780 |
|
|---|
| 781 | .globl ${PREFIX}_encrypt
|
|---|
| 782 | .type ${PREFIX}_encrypt,\@function,3
|
|---|
| 783 | .align 16
|
|---|
| 784 | ${PREFIX}_encrypt:
|
|---|
| 785 | ___
|
|---|
| 786 | $code.=<<___ if ($win64);
|
|---|
| 787 | lea -0xb8(%rsp),%rsp
|
|---|
| 788 | movaps %xmm6,0x10(%rsp)
|
|---|
| 789 | movaps %xmm7,0x20(%rsp)
|
|---|
| 790 | movaps %xmm8,0x30(%rsp)
|
|---|
| 791 | movaps %xmm9,0x40(%rsp)
|
|---|
| 792 | movaps %xmm10,0x50(%rsp)
|
|---|
| 793 | movaps %xmm11,0x60(%rsp)
|
|---|
| 794 | movaps %xmm12,0x70(%rsp)
|
|---|
| 795 | movaps %xmm13,0x80(%rsp)
|
|---|
| 796 | movaps %xmm14,0x90(%rsp)
|
|---|
| 797 | movaps %xmm15,0xa0(%rsp)
|
|---|
| 798 | .Lenc_body:
|
|---|
| 799 | ___
|
|---|
| 800 | $code.=<<___;
|
|---|
| 801 | movdqu (%rdi),%xmm0
|
|---|
| 802 | call _vpaes_preheat
|
|---|
| 803 | call _vpaes_encrypt_core
|
|---|
| 804 | movdqu %xmm0,(%rsi)
|
|---|
| 805 | ___
|
|---|
| 806 | $code.=<<___ if ($win64);
|
|---|
| 807 | movaps 0x10(%rsp),%xmm6
|
|---|
| 808 | movaps 0x20(%rsp),%xmm7
|
|---|
| 809 | movaps 0x30(%rsp),%xmm8
|
|---|
| 810 | movaps 0x40(%rsp),%xmm9
|
|---|
| 811 | movaps 0x50(%rsp),%xmm10
|
|---|
| 812 | movaps 0x60(%rsp),%xmm11
|
|---|
| 813 | movaps 0x70(%rsp),%xmm12
|
|---|
| 814 | movaps 0x80(%rsp),%xmm13
|
|---|
| 815 | movaps 0x90(%rsp),%xmm14
|
|---|
| 816 | movaps 0xa0(%rsp),%xmm15
|
|---|
| 817 | lea 0xb8(%rsp),%rsp
|
|---|
| 818 | .Lenc_epilogue:
|
|---|
| 819 | ___
|
|---|
| 820 | $code.=<<___;
|
|---|
| 821 | ret
|
|---|
| 822 | .size ${PREFIX}_encrypt,.-${PREFIX}_encrypt
|
|---|
| 823 |
|
|---|
| 824 | .globl ${PREFIX}_decrypt
|
|---|
| 825 | .type ${PREFIX}_decrypt,\@function,3
|
|---|
| 826 | .align 16
|
|---|
| 827 | ${PREFIX}_decrypt:
|
|---|
| 828 | ___
|
|---|
| 829 | $code.=<<___ if ($win64);
|
|---|
| 830 | lea -0xb8(%rsp),%rsp
|
|---|
| 831 | movaps %xmm6,0x10(%rsp)
|
|---|
| 832 | movaps %xmm7,0x20(%rsp)
|
|---|
| 833 | movaps %xmm8,0x30(%rsp)
|
|---|
| 834 | movaps %xmm9,0x40(%rsp)
|
|---|
| 835 | movaps %xmm10,0x50(%rsp)
|
|---|
| 836 | movaps %xmm11,0x60(%rsp)
|
|---|
| 837 | movaps %xmm12,0x70(%rsp)
|
|---|
| 838 | movaps %xmm13,0x80(%rsp)
|
|---|
| 839 | movaps %xmm14,0x90(%rsp)
|
|---|
| 840 | movaps %xmm15,0xa0(%rsp)
|
|---|
| 841 | .Ldec_body:
|
|---|
| 842 | ___
|
|---|
| 843 | $code.=<<___;
|
|---|
| 844 | movdqu (%rdi),%xmm0
|
|---|
| 845 | call _vpaes_preheat
|
|---|
| 846 | call _vpaes_decrypt_core
|
|---|
| 847 | movdqu %xmm0,(%rsi)
|
|---|
| 848 | ___
|
|---|
| 849 | $code.=<<___ if ($win64);
|
|---|
| 850 | movaps 0x10(%rsp),%xmm6
|
|---|
| 851 | movaps 0x20(%rsp),%xmm7
|
|---|
| 852 | movaps 0x30(%rsp),%xmm8
|
|---|
| 853 | movaps 0x40(%rsp),%xmm9
|
|---|
| 854 | movaps 0x50(%rsp),%xmm10
|
|---|
| 855 | movaps 0x60(%rsp),%xmm11
|
|---|
| 856 | movaps 0x70(%rsp),%xmm12
|
|---|
| 857 | movaps 0x80(%rsp),%xmm13
|
|---|
| 858 | movaps 0x90(%rsp),%xmm14
|
|---|
| 859 | movaps 0xa0(%rsp),%xmm15
|
|---|
| 860 | lea 0xb8(%rsp),%rsp
|
|---|
| 861 | .Ldec_epilogue:
|
|---|
| 862 | ___
|
|---|
| 863 | $code.=<<___;
|
|---|
| 864 | ret
|
|---|
| 865 | .size ${PREFIX}_decrypt,.-${PREFIX}_decrypt
|
|---|
| 866 | ___
|
|---|
| 867 | {
|
|---|
| 868 | my ($inp,$out,$len,$key,$ivp,$enc)=("%rdi","%rsi","%rdx","%rcx","%r8","%r9");
|
|---|
| 869 | # void AES_cbc_encrypt (const void char *inp, unsigned char *out,
|
|---|
| 870 | # size_t length, const AES_KEY *key,
|
|---|
| 871 | # unsigned char *ivp,const int enc);
|
|---|
| 872 | $code.=<<___;
|
|---|
| 873 | .globl ${PREFIX}_cbc_encrypt
|
|---|
| 874 | .type ${PREFIX}_cbc_encrypt,\@function,6
|
|---|
| 875 | .align 16
|
|---|
| 876 | ${PREFIX}_cbc_encrypt:
|
|---|
| 877 | xchg $key,$len
|
|---|
| 878 | ___
|
|---|
| 879 | ($len,$key)=($key,$len);
|
|---|
| 880 | $code.=<<___;
|
|---|
| 881 | sub \$16,$len
|
|---|
| 882 | jc .Lcbc_abort
|
|---|
| 883 | ___
|
|---|
| 884 | $code.=<<___ if ($win64);
|
|---|
| 885 | lea -0xb8(%rsp),%rsp
|
|---|
| 886 | movaps %xmm6,0x10(%rsp)
|
|---|
| 887 | movaps %xmm7,0x20(%rsp)
|
|---|
| 888 | movaps %xmm8,0x30(%rsp)
|
|---|
| 889 | movaps %xmm9,0x40(%rsp)
|
|---|
| 890 | movaps %xmm10,0x50(%rsp)
|
|---|
| 891 | movaps %xmm11,0x60(%rsp)
|
|---|
| 892 | movaps %xmm12,0x70(%rsp)
|
|---|
| 893 | movaps %xmm13,0x80(%rsp)
|
|---|
| 894 | movaps %xmm14,0x90(%rsp)
|
|---|
| 895 | movaps %xmm15,0xa0(%rsp)
|
|---|
| 896 | .Lcbc_body:
|
|---|
| 897 | ___
|
|---|
| 898 | $code.=<<___;
|
|---|
| 899 | movdqu ($ivp),%xmm6 # load IV
|
|---|
| 900 | sub $inp,$out
|
|---|
| 901 | call _vpaes_preheat
|
|---|
| 902 | cmp \$0,${enc}d
|
|---|
| 903 | je .Lcbc_dec_loop
|
|---|
| 904 | jmp .Lcbc_enc_loop
|
|---|
| 905 | .align 16
|
|---|
| 906 | .Lcbc_enc_loop:
|
|---|
| 907 | movdqu ($inp),%xmm0
|
|---|
| 908 | pxor %xmm6,%xmm0
|
|---|
| 909 | call _vpaes_encrypt_core
|
|---|
| 910 | movdqa %xmm0,%xmm6
|
|---|
| 911 | movdqu %xmm0,($out,$inp)
|
|---|
| 912 | lea 16($inp),$inp
|
|---|
| 913 | sub \$16,$len
|
|---|
| 914 | jnc .Lcbc_enc_loop
|
|---|
| 915 | jmp .Lcbc_done
|
|---|
| 916 | .align 16
|
|---|
| 917 | .Lcbc_dec_loop:
|
|---|
| 918 | movdqu ($inp),%xmm0
|
|---|
| 919 | movdqa %xmm0,%xmm7
|
|---|
| 920 | call _vpaes_decrypt_core
|
|---|
| 921 | pxor %xmm6,%xmm0
|
|---|
| 922 | movdqa %xmm7,%xmm6
|
|---|
| 923 | movdqu %xmm0,($out,$inp)
|
|---|
| 924 | lea 16($inp),$inp
|
|---|
| 925 | sub \$16,$len
|
|---|
| 926 | jnc .Lcbc_dec_loop
|
|---|
| 927 | .Lcbc_done:
|
|---|
| 928 | movdqu %xmm6,($ivp) # save IV
|
|---|
| 929 | ___
|
|---|
| 930 | $code.=<<___ if ($win64);
|
|---|
| 931 | movaps 0x10(%rsp),%xmm6
|
|---|
| 932 | movaps 0x20(%rsp),%xmm7
|
|---|
| 933 | movaps 0x30(%rsp),%xmm8
|
|---|
| 934 | movaps 0x40(%rsp),%xmm9
|
|---|
| 935 | movaps 0x50(%rsp),%xmm10
|
|---|
| 936 | movaps 0x60(%rsp),%xmm11
|
|---|
| 937 | movaps 0x70(%rsp),%xmm12
|
|---|
| 938 | movaps 0x80(%rsp),%xmm13
|
|---|
| 939 | movaps 0x90(%rsp),%xmm14
|
|---|
| 940 | movaps 0xa0(%rsp),%xmm15
|
|---|
| 941 | lea 0xb8(%rsp),%rsp
|
|---|
| 942 | .Lcbc_epilogue:
|
|---|
| 943 | ___
|
|---|
| 944 | $code.=<<___;
|
|---|
| 945 | .Lcbc_abort:
|
|---|
| 946 | ret
|
|---|
| 947 | .size ${PREFIX}_cbc_encrypt,.-${PREFIX}_cbc_encrypt
|
|---|
| 948 | ___
|
|---|
| 949 | }
|
|---|
| 950 | $code.=<<___;
|
|---|
| 951 | ##
|
|---|
| 952 | ## _aes_preheat
|
|---|
| 953 | ##
|
|---|
| 954 | ## Fills register %r10 -> .aes_consts (so you can -fPIC)
|
|---|
| 955 | ## and %xmm9-%xmm15 as specified below.
|
|---|
| 956 | ##
|
|---|
| 957 | .type _vpaes_preheat,\@abi-omnipotent
|
|---|
| 958 | .align 16
|
|---|
| 959 | _vpaes_preheat:
|
|---|
| 960 | lea .Lk_s0F(%rip), %r10
|
|---|
| 961 | movdqa -0x20(%r10), %xmm10 # .Lk_inv
|
|---|
| 962 | movdqa -0x10(%r10), %xmm11 # .Lk_inv+16
|
|---|
| 963 | movdqa 0x00(%r10), %xmm9 # .Lk_s0F
|
|---|
| 964 | movdqa 0x30(%r10), %xmm13 # .Lk_sb1
|
|---|
| 965 | movdqa 0x40(%r10), %xmm12 # .Lk_sb1+16
|
|---|
| 966 | movdqa 0x50(%r10), %xmm15 # .Lk_sb2
|
|---|
| 967 | movdqa 0x60(%r10), %xmm14 # .Lk_sb2+16
|
|---|
| 968 | ret
|
|---|
| 969 | .size _vpaes_preheat,.-_vpaes_preheat
|
|---|
| 970 | ########################################################
|
|---|
| 971 | ## ##
|
|---|
| 972 | ## Constants ##
|
|---|
| 973 | ## ##
|
|---|
| 974 | ########################################################
|
|---|
| 975 | .type _vpaes_consts,\@object
|
|---|
| 976 | .align 64
|
|---|
| 977 | _vpaes_consts:
|
|---|
| 978 | .Lk_inv: # inv, inva
|
|---|
| 979 | .quad 0x0E05060F0D080180, 0x040703090A0B0C02
|
|---|
| 980 | .quad 0x01040A060F0B0780, 0x030D0E0C02050809
|
|---|
| 981 |
|
|---|
| 982 | .Lk_s0F: # s0F
|
|---|
| 983 | .quad 0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F
|
|---|
| 984 |
|
|---|
| 985 | .Lk_ipt: # input transform (lo, hi)
|
|---|
| 986 | .quad 0xC2B2E8985A2A7000, 0xCABAE09052227808
|
|---|
| 987 | .quad 0x4C01307D317C4D00, 0xCD80B1FCB0FDCC81
|
|---|
| 988 |
|
|---|
| 989 | .Lk_sb1: # sb1u, sb1t
|
|---|
| 990 | .quad 0xB19BE18FCB503E00, 0xA5DF7A6E142AF544
|
|---|
| 991 | .quad 0x3618D415FAE22300, 0x3BF7CCC10D2ED9EF
|
|---|
| 992 | .Lk_sb2: # sb2u, sb2t
|
|---|
| 993 | .quad 0xE27A93C60B712400, 0x5EB7E955BC982FCD
|
|---|
| 994 | .quad 0x69EB88400AE12900, 0xC2A163C8AB82234A
|
|---|
| 995 | .Lk_sbo: # sbou, sbot
|
|---|
| 996 | .quad 0xD0D26D176FBDC700, 0x15AABF7AC502A878
|
|---|
| 997 | .quad 0xCFE474A55FBB6A00, 0x8E1E90D1412B35FA
|
|---|
| 998 |
|
|---|
| 999 | .Lk_mc_forward: # mc_forward
|
|---|
| 1000 | .quad 0x0407060500030201, 0x0C0F0E0D080B0A09
|
|---|
| 1001 | .quad 0x080B0A0904070605, 0x000302010C0F0E0D
|
|---|
| 1002 | .quad 0x0C0F0E0D080B0A09, 0x0407060500030201
|
|---|
| 1003 | .quad 0x000302010C0F0E0D, 0x080B0A0904070605
|
|---|
| 1004 |
|
|---|
| 1005 | .Lk_mc_backward:# mc_backward
|
|---|
| 1006 | .quad 0x0605040702010003, 0x0E0D0C0F0A09080B
|
|---|
| 1007 | .quad 0x020100030E0D0C0F, 0x0A09080B06050407
|
|---|
| 1008 | .quad 0x0E0D0C0F0A09080B, 0x0605040702010003
|
|---|
| 1009 | .quad 0x0A09080B06050407, 0x020100030E0D0C0F
|
|---|
| 1010 |
|
|---|
| 1011 | .Lk_sr: # sr
|
|---|
| 1012 | .quad 0x0706050403020100, 0x0F0E0D0C0B0A0908
|
|---|
| 1013 | .quad 0x030E09040F0A0500, 0x0B06010C07020D08
|
|---|
| 1014 | .quad 0x0F060D040B020900, 0x070E050C030A0108
|
|---|
| 1015 | .quad 0x0B0E0104070A0D00, 0x0306090C0F020508
|
|---|
| 1016 |
|
|---|
| 1017 | .Lk_rcon: # rcon
|
|---|
| 1018 | .quad 0x1F8391B9AF9DEEB6, 0x702A98084D7C7D81
|
|---|
| 1019 |
|
|---|
| 1020 | .Lk_s63: # s63: all equal to 0x63 transformed
|
|---|
| 1021 | .quad 0x5B5B5B5B5B5B5B5B, 0x5B5B5B5B5B5B5B5B
|
|---|
| 1022 |
|
|---|
| 1023 | .Lk_opt: # output transform
|
|---|
| 1024 | .quad 0xFF9F4929D6B66000, 0xF7974121DEBE6808
|
|---|
| 1025 | .quad 0x01EDBD5150BCEC00, 0xE10D5DB1B05C0CE0
|
|---|
| 1026 |
|
|---|
| 1027 | .Lk_deskew: # deskew tables: inverts the sbox's "skew"
|
|---|
| 1028 | .quad 0x07E4A34047A4E300, 0x1DFEB95A5DBEF91A
|
|---|
| 1029 | .quad 0x5F36B5DC83EA6900, 0x2841C2ABF49D1E77
|
|---|
| 1030 |
|
|---|
| 1031 | ##
|
|---|
| 1032 | ## Decryption stuff
|
|---|
| 1033 | ## Key schedule constants
|
|---|
| 1034 | ##
|
|---|
| 1035 | .Lk_dksd: # decryption key schedule: invskew x*D
|
|---|
| 1036 | .quad 0xFEB91A5DA3E44700, 0x0740E3A45A1DBEF9
|
|---|
| 1037 | .quad 0x41C277F4B5368300, 0x5FDC69EAAB289D1E
|
|---|
| 1038 | .Lk_dksb: # decryption key schedule: invskew x*B
|
|---|
| 1039 | .quad 0x9A4FCA1F8550D500, 0x03D653861CC94C99
|
|---|
| 1040 | .quad 0x115BEDA7B6FC4A00, 0xD993256F7E3482C8
|
|---|
| 1041 | .Lk_dkse: # decryption key schedule: invskew x*E + 0x63
|
|---|
| 1042 | .quad 0xD5031CCA1FC9D600, 0x53859A4C994F5086
|
|---|
| 1043 | .quad 0xA23196054FDC7BE8, 0xCD5EF96A20B31487
|
|---|
| 1044 | .Lk_dks9: # decryption key schedule: invskew x*9
|
|---|
| 1045 | .quad 0xB6116FC87ED9A700, 0x4AED933482255BFC
|
|---|
| 1046 | .quad 0x4576516227143300, 0x8BB89FACE9DAFDCE
|
|---|
| 1047 |
|
|---|
| 1048 | ##
|
|---|
| 1049 | ## Decryption stuff
|
|---|
| 1050 | ## Round function constants
|
|---|
| 1051 | ##
|
|---|
| 1052 | .Lk_dipt: # decryption input transform
|
|---|
| 1053 | .quad 0x0F505B040B545F00, 0x154A411E114E451A
|
|---|
| 1054 | .quad 0x86E383E660056500, 0x12771772F491F194
|
|---|
| 1055 |
|
|---|
| 1056 | .Lk_dsb9: # decryption sbox output *9*u, *9*t
|
|---|
| 1057 | .quad 0x851C03539A86D600, 0xCAD51F504F994CC9
|
|---|
| 1058 | .quad 0xC03B1789ECD74900, 0x725E2C9EB2FBA565
|
|---|
| 1059 | .Lk_dsbd: # decryption sbox output *D*u, *D*t
|
|---|
| 1060 | .quad 0x7D57CCDFE6B1A200, 0xF56E9B13882A4439
|
|---|
| 1061 | .quad 0x3CE2FAF724C6CB00, 0x2931180D15DEEFD3
|
|---|
| 1062 | .Lk_dsbb: # decryption sbox output *B*u, *B*t
|
|---|
| 1063 | .quad 0xD022649296B44200, 0x602646F6B0F2D404
|
|---|
| 1064 | .quad 0xC19498A6CD596700, 0xF3FF0C3E3255AA6B
|
|---|
| 1065 | .Lk_dsbe: # decryption sbox output *E*u, *E*t
|
|---|
| 1066 | .quad 0x46F2929626D4D000, 0x2242600464B4F6B0
|
|---|
| 1067 | .quad 0x0C55A6CDFFAAC100, 0x9467F36B98593E32
|
|---|
| 1068 | .Lk_dsbo: # decryption sbox final output
|
|---|
| 1069 | .quad 0x1387EA537EF94000, 0xC7AA6DB9D4943E2D
|
|---|
| 1070 | .quad 0x12D7560F93441D00, 0xCA4B8159D8C58E9C
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| 1071 | .asciz "Vector Permutation AES for x86_64/SSSE3, Mike Hamburg (Stanford University)"
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| 1072 | .align 64
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| 1073 | .size _vpaes_consts,.-_vpaes_consts
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| 1074 | ___
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| 1075 |
|
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| 1076 | if ($win64) {
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| 1077 | # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
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| 1078 | # CONTEXT *context,DISPATCHER_CONTEXT *disp)
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| 1079 | $rec="%rcx";
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| 1080 | $frame="%rdx";
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| 1081 | $context="%r8";
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| 1082 | $disp="%r9";
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| 1083 |
|
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| 1084 | $code.=<<___;
|
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| 1085 | .extern __imp_RtlVirtualUnwind
|
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| 1086 | .type se_handler,\@abi-omnipotent
|
|---|
| 1087 | .align 16
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| 1088 | se_handler:
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|---|
| 1089 | push %rsi
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|---|
| 1090 | push %rdi
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|---|
| 1091 | push %rbx
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| 1092 | push %rbp
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| 1093 | push %r12
|
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| 1094 | push %r13
|
|---|
| 1095 | push %r14
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| 1096 | push %r15
|
|---|
| 1097 | pushfq
|
|---|
| 1098 | sub \$64,%rsp
|
|---|
| 1099 |
|
|---|
| 1100 | mov 120($context),%rax # pull context->Rax
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|---|
| 1101 | mov 248($context),%rbx # pull context->Rip
|
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| 1102 |
|
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| 1103 | mov 8($disp),%rsi # disp->ImageBase
|
|---|
| 1104 | mov 56($disp),%r11 # disp->HandlerData
|
|---|
| 1105 |
|
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| 1106 | mov 0(%r11),%r10d # HandlerData[0]
|
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| 1107 | lea (%rsi,%r10),%r10 # prologue label
|
|---|
| 1108 | cmp %r10,%rbx # context->Rip<prologue label
|
|---|
| 1109 | jb .Lin_prologue
|
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| 1110 |
|
|---|
| 1111 | mov 152($context),%rax # pull context->Rsp
|
|---|
| 1112 |
|
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| 1113 | mov 4(%r11),%r10d # HandlerData[1]
|
|---|
| 1114 | lea (%rsi,%r10),%r10 # epilogue label
|
|---|
| 1115 | cmp %r10,%rbx # context->Rip>=epilogue label
|
|---|
| 1116 | jae .Lin_prologue
|
|---|
| 1117 |
|
|---|
| 1118 | lea 16(%rax),%rsi # %xmm save area
|
|---|
| 1119 | lea 512($context),%rdi # &context.Xmm6
|
|---|
| 1120 | mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
|
|---|
| 1121 | .long 0xa548f3fc # cld; rep movsq
|
|---|
| 1122 | lea 0xb8(%rax),%rax # adjust stack pointer
|
|---|
| 1123 |
|
|---|
| 1124 | .Lin_prologue:
|
|---|
| 1125 | mov 8(%rax),%rdi
|
|---|
| 1126 | mov 16(%rax),%rsi
|
|---|
| 1127 | mov %rax,152($context) # restore context->Rsp
|
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| 1128 | mov %rsi,168($context) # restore context->Rsi
|
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| 1129 | mov %rdi,176($context) # restore context->Rdi
|
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| 1130 |
|
|---|
| 1131 | mov 40($disp),%rdi # disp->ContextRecord
|
|---|
| 1132 | mov $context,%rsi # context
|
|---|
| 1133 | mov \$`1232/8`,%ecx # sizeof(CONTEXT)
|
|---|
| 1134 | .long 0xa548f3fc # cld; rep movsq
|
|---|
| 1135 |
|
|---|
| 1136 | mov $disp,%rsi
|
|---|
| 1137 | xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
|
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| 1138 | mov 8(%rsi),%rdx # arg2, disp->ImageBase
|
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| 1139 | mov 0(%rsi),%r8 # arg3, disp->ControlPc
|
|---|
| 1140 | mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
|
|---|
| 1141 | mov 40(%rsi),%r10 # disp->ContextRecord
|
|---|
| 1142 | lea 56(%rsi),%r11 # &disp->HandlerData
|
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| 1143 | lea 24(%rsi),%r12 # &disp->EstablisherFrame
|
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| 1144 | mov %r10,32(%rsp) # arg5
|
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| 1145 | mov %r11,40(%rsp) # arg6
|
|---|
| 1146 | mov %r12,48(%rsp) # arg7
|
|---|
| 1147 | mov %rcx,56(%rsp) # arg8, (NULL)
|
|---|
| 1148 | call *__imp_RtlVirtualUnwind(%rip)
|
|---|
| 1149 |
|
|---|
| 1150 | mov \$1,%eax # ExceptionContinueSearch
|
|---|
| 1151 | add \$64,%rsp
|
|---|
| 1152 | popfq
|
|---|
| 1153 | pop %r15
|
|---|
| 1154 | pop %r14
|
|---|
| 1155 | pop %r13
|
|---|
| 1156 | pop %r12
|
|---|
| 1157 | pop %rbp
|
|---|
| 1158 | pop %rbx
|
|---|
| 1159 | pop %rdi
|
|---|
| 1160 | pop %rsi
|
|---|
| 1161 | ret
|
|---|
| 1162 | .size se_handler,.-se_handler
|
|---|
| 1163 |
|
|---|
| 1164 | .section .pdata
|
|---|
| 1165 | .align 4
|
|---|
| 1166 | .rva .LSEH_begin_${PREFIX}_set_encrypt_key
|
|---|
| 1167 | .rva .LSEH_end_${PREFIX}_set_encrypt_key
|
|---|
| 1168 | .rva .LSEH_info_${PREFIX}_set_encrypt_key
|
|---|
| 1169 |
|
|---|
| 1170 | .rva .LSEH_begin_${PREFIX}_set_decrypt_key
|
|---|
| 1171 | .rva .LSEH_end_${PREFIX}_set_decrypt_key
|
|---|
| 1172 | .rva .LSEH_info_${PREFIX}_set_decrypt_key
|
|---|
| 1173 |
|
|---|
| 1174 | .rva .LSEH_begin_${PREFIX}_encrypt
|
|---|
| 1175 | .rva .LSEH_end_${PREFIX}_encrypt
|
|---|
| 1176 | .rva .LSEH_info_${PREFIX}_encrypt
|
|---|
| 1177 |
|
|---|
| 1178 | .rva .LSEH_begin_${PREFIX}_decrypt
|
|---|
| 1179 | .rva .LSEH_end_${PREFIX}_decrypt
|
|---|
| 1180 | .rva .LSEH_info_${PREFIX}_decrypt
|
|---|
| 1181 |
|
|---|
| 1182 | .rva .LSEH_begin_${PREFIX}_cbc_encrypt
|
|---|
| 1183 | .rva .LSEH_end_${PREFIX}_cbc_encrypt
|
|---|
| 1184 | .rva .LSEH_info_${PREFIX}_cbc_encrypt
|
|---|
| 1185 |
|
|---|
| 1186 | .section .xdata
|
|---|
| 1187 | .align 8
|
|---|
| 1188 | .LSEH_info_${PREFIX}_set_encrypt_key:
|
|---|
| 1189 | .byte 9,0,0,0
|
|---|
| 1190 | .rva se_handler
|
|---|
| 1191 | .rva .Lenc_key_body,.Lenc_key_epilogue # HandlerData[]
|
|---|
| 1192 | .LSEH_info_${PREFIX}_set_decrypt_key:
|
|---|
| 1193 | .byte 9,0,0,0
|
|---|
| 1194 | .rva se_handler
|
|---|
| 1195 | .rva .Ldec_key_body,.Ldec_key_epilogue # HandlerData[]
|
|---|
| 1196 | .LSEH_info_${PREFIX}_encrypt:
|
|---|
| 1197 | .byte 9,0,0,0
|
|---|
| 1198 | .rva se_handler
|
|---|
| 1199 | .rva .Lenc_body,.Lenc_epilogue # HandlerData[]
|
|---|
| 1200 | .LSEH_info_${PREFIX}_decrypt:
|
|---|
| 1201 | .byte 9,0,0,0
|
|---|
| 1202 | .rva se_handler
|
|---|
| 1203 | .rva .Ldec_body,.Ldec_epilogue # HandlerData[]
|
|---|
| 1204 | .LSEH_info_${PREFIX}_cbc_encrypt:
|
|---|
| 1205 | .byte 9,0,0,0
|
|---|
| 1206 | .rva se_handler
|
|---|
| 1207 | .rva .Lcbc_body,.Lcbc_epilogue # HandlerData[]
|
|---|
| 1208 | ___
|
|---|
| 1209 | }
|
|---|
| 1210 |
|
|---|
| 1211 | $code =~ s/\`([^\`]*)\`/eval($1)/gem;
|
|---|
| 1212 |
|
|---|
| 1213 | print $code;
|
|---|
| 1214 |
|
|---|
| 1215 | close STDOUT;
|
|---|
