1 #! /usr/bin/env perl 2 # Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved. 3 # 4 # Licensed under the OpenSSL license (the "License"). You may not use 5 # this file except in compliance with the License. You can obtain a copy 6 # in the file LICENSE in the source distribution or at 7 # https://www.openssl.org/source/license.html 8 9 10 ###################################################################### 11 ## Constant-time SSSE3 AES core implementation. 12 ## version 0.1 13 ## 14 ## By Mike Hamburg (Stanford University), 2009 15 ## Public domain. 16 ## 17 ## For details see http://shiftleft.org/papers/vector_aes/ and 18 ## http://crypto.stanford.edu/vpaes/. 19 20 ###################################################################### 21 # September 2011. 22 # 23 # Interface to OpenSSL as "almost" drop-in replacement for 24 # aes-x86_64.pl. "Almost" refers to the fact that AES_cbc_encrypt 25 # doesn't handle partial vectors (doesn't have to if called from 26 # EVP only). "Drop-in" implies that this module doesn't share key 27 # schedule structure with the original nor does it make assumption 28 # about its alignment... 29 # 30 # Performance summary. aes-x86_64.pl column lists large-block CBC 31 # encrypt/decrypt/with-hyper-threading-off(*) results in cycles per 32 # byte processed with 128-bit key, and vpaes-x86_64.pl column - 33 # [also large-block CBC] encrypt/decrypt. 34 # 35 # aes-x86_64.pl vpaes-x86_64.pl 36 # 37 # Core 2(**) 29.6/41.1/14.3 21.9/25.2(***) 38 # Nehalem 29.6/40.3/14.6 10.0/11.8 39 # Atom 57.3/74.2/32.1 60.9/77.2(***) 40 # Silvermont 52.7/64.0/19.5 48.8/60.8(***) 41 # Goldmont 38.9/49.0/17.8 10.6/12.6 42 # 43 # (*) "Hyper-threading" in the context refers rather to cache shared 44 # among multiple cores, than to specifically Intel HTT. As vast 45 # majority of contemporary cores share cache, slower code path 46 # is common place. In other words "with-hyper-threading-off" 47 # results are presented mostly for reference purposes. 48 # 49 # (**) "Core 2" refers to initial 65nm design, a.k.a. Conroe. 50 # 51 # (***) Less impressive improvement on Core 2 and Atom is due to slow 52 # pshufb, yet it's respectable +36%/62% improvement on Core 2 53 # (as implied, over "hyper-threading-safe" code path). 54 # 55 # <appro (at] openssl.org> 56 57 $flavour = shift; 58 $output = shift; 59 if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } 60 61 $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); 62 63 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; 64 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or 65 ( $xlate="${dir}../../../perlasm/x86_64-xlate.pl" and -f $xlate) or 66 die "can't locate x86_64-xlate.pl"; 67 68 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""; 69 *STDOUT=*OUT; 70 71 $PREFIX="vpaes"; 72 73 $code.=<<___; 74 .text 75 76 ## 77 ## _aes_encrypt_core 78 ## 79 ## AES-encrypt %xmm0. 80 ## 81 ## Inputs: 82 ## %xmm0 = input 83 ## %xmm9-%xmm15 as in _vpaes_preheat 84 ## (%rdx) = scheduled keys 85 ## 86 ## Output in %xmm0 87 ## Clobbers %xmm1-%xmm5, %r9, %r10, %r11, %rax 88 ## Preserves %xmm6 - %xmm8 so you get some local vectors 89 ## 90 ## 91 .type _vpaes_encrypt_core,\@abi-omnipotent 92 .align 16 93 _vpaes_encrypt_core: 94 .cfi_startproc 95 mov %rdx, %r9 96 mov \$16, %r11 97 mov 240(%rdx),%eax 98 movdqa %xmm9, %xmm1 99 movdqa .Lk_ipt(%rip), %xmm2 # iptlo 100 pandn %xmm0, %xmm1 101 movdqu (%r9), %xmm5 # round0 key 102 psrld \$4, %xmm1 103 pand %xmm9, %xmm0 104 pshufb %xmm0, %xmm2 105 movdqa .Lk_ipt+16(%rip), %xmm0 # ipthi 106 pshufb %xmm1, %xmm0 107 pxor %xmm5, %xmm2 108 add \$16, %r9 109 pxor %xmm2, %xmm0 110 lea .Lk_mc_backward(%rip),%r10 111 jmp .Lenc_entry 112 113 .align 16 114 .Lenc_loop: 115 # middle of middle round 116 movdqa %xmm13, %xmm4 # 4 : sb1u 117 movdqa %xmm12, %xmm0 # 0 : sb1t 118 pshufb %xmm2, %xmm4 # 4 = sb1u 119 pshufb %xmm3, %xmm0 # 0 = sb1t 120 pxor %xmm5, %xmm4 # 4 = sb1u + k 121 movdqa %xmm15, %xmm5 # 4 : sb2u 122 pxor %xmm4, %xmm0 # 0 = A 123 movdqa -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[] 124 pshufb %xmm2, %xmm5 # 4 = sb2u 125 movdqa (%r11,%r10), %xmm4 # .Lk_mc_backward[] 126 movdqa %xmm14, %xmm2 # 2 : sb2t 127 pshufb %xmm3, %xmm2 # 2 = sb2t 128 movdqa %xmm0, %xmm3 # 3 = A 129 pxor %xmm5, %xmm2 # 2 = 2A 130 pshufb %xmm1, %xmm0 # 0 = B 131 add \$16, %r9 # next key 132 pxor %xmm2, %xmm0 # 0 = 2A+B 133 pshufb %xmm4, %xmm3 # 3 = D 134 add \$16, %r11 # next mc 135 pxor %xmm0, %xmm3 # 3 = 2A+B+D 136 pshufb %xmm1, %xmm0 # 0 = 2B+C 137 and \$0x30, %r11 # ... mod 4 138 sub \$1,%rax # nr-- 139 pxor %xmm3, %xmm0 # 0 = 2A+3B+C+D 140 141 .Lenc_entry: 142 # top of round 143 movdqa %xmm9, %xmm1 # 1 : i 144 movdqa %xmm11, %xmm5 # 2 : a/k 145 pandn %xmm0, %xmm1 # 1 = i<<4 146 psrld \$4, %xmm1 # 1 = i 147 pand %xmm9, %xmm0 # 0 = k 148 pshufb %xmm0, %xmm5 # 2 = a/k 149 movdqa %xmm10, %xmm3 # 3 : 1/i 150 pxor %xmm1, %xmm0 # 0 = j 151 pshufb %xmm1, %xmm3 # 3 = 1/i 152 movdqa %xmm10, %xmm4 # 4 : 1/j 153 pxor %xmm5, %xmm3 # 3 = iak = 1/i + a/k 154 pshufb %xmm0, %xmm4 # 4 = 1/j 155 movdqa %xmm10, %xmm2 # 2 : 1/iak 156 pxor %xmm5, %xmm4 # 4 = jak = 1/j + a/k 157 pshufb %xmm3, %xmm2 # 2 = 1/iak 158 movdqa %xmm10, %xmm3 # 3 : 1/jak 159 pxor %xmm0, %xmm2 # 2 = io 160 pshufb %xmm4, %xmm3 # 3 = 1/jak 161 movdqu (%r9), %xmm5 162 pxor %xmm1, %xmm3 # 3 = jo 163 jnz .Lenc_loop 164 165 # middle of last round 166 movdqa -0x60(%r10), %xmm4 # 3 : sbou .Lk_sbo 167 movdqa -0x50(%r10), %xmm0 # 0 : sbot .Lk_sbo+16 168 pshufb %xmm2, %xmm4 # 4 = sbou 169 pxor %xmm5, %xmm4 # 4 = sb1u + k 170 pshufb %xmm3, %xmm0 # 0 = sb1t 171 movdqa 0x40(%r11,%r10), %xmm1 # .Lk_sr[] 172 pxor %xmm4, %xmm0 # 0 = A 173 pshufb %xmm1, %xmm0 174 ret 175 .cfi_endproc 176 .size _vpaes_encrypt_core,.-_vpaes_encrypt_core 177 178 ## 179 ## _aes_encrypt_core_2x 180 ## 181 ## AES-encrypt %xmm0 and %xmm6 in parallel. 182 ## 183 ## Inputs: 184 ## %xmm0 and %xmm6 = input 185 ## %xmm12-%xmm15 as in _vpaes_preheat 186 ## (%rdx) = scheduled keys 187 ## 188 ## Output in %xmm0 and %xmm6 189 ## Clobbers %xmm1-%xmm5, %xmm7-%xmm11, %r9, %r10, %r11, %rax 190 ## Preserves %xmm14 and %xmm15 191 ## 192 ## This function stitches two parallel instances of _vpaes_encrypt_core. x86_64 193 ## provides 16 XMM registers. _vpaes_encrypt_core computes over six registers 194 ## (%xmm0-%xmm5) and additionally uses seven registers with preloaded constants 195 ## from _vpaes_preheat (%xmm9-%xmm15). This does not quite fit two instances, 196 ## so we spill some of %xmm9 through %xmm15 back to memory. We keep %xmm9 and 197 ## %xmm10 in registers as these values are used several times in a row. The 198 ## remainder are read once per round and are spilled to memory. This leaves two 199 ## registers preserved for the caller. 200 ## 201 ## Thus, of the two _vpaes_encrypt_core instances, the first uses (%xmm0-%xmm5) 202 ## as before. The second uses %xmm6-%xmm8,%xmm11-%xmm13. (Add 6 to %xmm2 and 203 ## below. Add 8 to %xmm3 and up.) Instructions in the second instance are 204 ## indented by one space. 205 ## 206 ## 207 .type _vpaes_encrypt_core_2x,\@abi-omnipotent 208 .align 16 209 _vpaes_encrypt_core_2x: 210 .cfi_startproc 211 mov %rdx, %r9 212 mov \$16, %r11 213 mov 240(%rdx),%eax 214 movdqa %xmm9, %xmm1 215 movdqa %xmm9, %xmm7 216 movdqa .Lk_ipt(%rip), %xmm2 # iptlo 217 movdqa %xmm2, %xmm8 218 pandn %xmm0, %xmm1 219 pandn %xmm6, %xmm7 220 movdqu (%r9), %xmm5 # round0 key 221 # Also use %xmm5 in the second instance. 222 psrld \$4, %xmm1 223 psrld \$4, %xmm7 224 pand %xmm9, %xmm0 225 pand %xmm9, %xmm6 226 pshufb %xmm0, %xmm2 227 pshufb %xmm6, %xmm8 228 movdqa .Lk_ipt+16(%rip), %xmm0 # ipthi 229 movdqa %xmm0, %xmm6 230 pshufb %xmm1, %xmm0 231 pshufb %xmm7, %xmm6 232 pxor %xmm5, %xmm2 233 pxor %xmm5, %xmm8 234 add \$16, %r9 235 pxor %xmm2, %xmm0 236 pxor %xmm8, %xmm6 237 lea .Lk_mc_backward(%rip),%r10 238 jmp .Lenc2x_entry 239 240 .align 16 241 .Lenc2x_loop: 242 # middle of middle round 243 movdqa .Lk_sb1(%rip), %xmm4 # 4 : sb1u 244 movdqa .Lk_sb1+16(%rip),%xmm0 # 0 : sb1t 245 movdqa %xmm4, %xmm12 246 movdqa %xmm0, %xmm6 247 pshufb %xmm2, %xmm4 # 4 = sb1u 248 pshufb %xmm8, %xmm12 249 pshufb %xmm3, %xmm0 # 0 = sb1t 250 pshufb %xmm11, %xmm6 251 pxor %xmm5, %xmm4 # 4 = sb1u + k 252 pxor %xmm5, %xmm12 253 movdqa .Lk_sb2(%rip), %xmm5 # 4 : sb2u 254 movdqa %xmm5, %xmm13 255 pxor %xmm4, %xmm0 # 0 = A 256 pxor %xmm12, %xmm6 257 movdqa -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[] 258 # Also use %xmm1 in the second instance. 259 pshufb %xmm2, %xmm5 # 4 = sb2u 260 pshufb %xmm8, %xmm13 261 movdqa (%r11,%r10), %xmm4 # .Lk_mc_backward[] 262 # Also use %xmm4 in the second instance. 263 movdqa .Lk_sb2+16(%rip), %xmm2 # 2 : sb2t 264 movdqa %xmm2, %xmm8 265 pshufb %xmm3, %xmm2 # 2 = sb2t 266 pshufb %xmm11, %xmm8 267 movdqa %xmm0, %xmm3 # 3 = A 268 movdqa %xmm6, %xmm11 269 pxor %xmm5, %xmm2 # 2 = 2A 270 pxor %xmm13, %xmm8 271 pshufb %xmm1, %xmm0 # 0 = B 272 pshufb %xmm1, %xmm6 273 add \$16, %r9 # next key 274 pxor %xmm2, %xmm0 # 0 = 2A+B 275 pxor %xmm8, %xmm6 276 pshufb %xmm4, %xmm3 # 3 = D 277 pshufb %xmm4, %xmm11 278 add \$16, %r11 # next mc 279 pxor %xmm0, %xmm3 # 3 = 2A+B+D 280 pxor %xmm6, %xmm11 281 pshufb %xmm1, %xmm0 # 0 = 2B+C 282 pshufb %xmm1, %xmm6 283 and \$0x30, %r11 # ... mod 4 284 sub \$1,%rax # nr-- 285 pxor %xmm3, %xmm0 # 0 = 2A+3B+C+D 286 pxor %xmm11, %xmm6 287 288 .Lenc2x_entry: 289 # top of round 290 movdqa %xmm9, %xmm1 # 1 : i 291 movdqa %xmm9, %xmm7 292 movdqa .Lk_inv+16(%rip), %xmm5 # 2 : a/k 293 movdqa %xmm5, %xmm13 294 pandn %xmm0, %xmm1 # 1 = i<<4 295 pandn %xmm6, %xmm7 296 psrld \$4, %xmm1 # 1 = i 297 psrld \$4, %xmm7 298 pand %xmm9, %xmm0 # 0 = k 299 pand %xmm9, %xmm6 300 pshufb %xmm0, %xmm5 # 2 = a/k 301 pshufb %xmm6, %xmm13 302 movdqa %xmm10, %xmm3 # 3 : 1/i 303 movdqa %xmm10, %xmm11 304 pxor %xmm1, %xmm0 # 0 = j 305 pxor %xmm7, %xmm6 306 pshufb %xmm1, %xmm3 # 3 = 1/i 307 pshufb %xmm7, %xmm11 308 movdqa %xmm10, %xmm4 # 4 : 1/j 309 movdqa %xmm10, %xmm12 310 pxor %xmm5, %xmm3 # 3 = iak = 1/i + a/k 311 pxor %xmm13, %xmm11 312 pshufb %xmm0, %xmm4 # 4 = 1/j 313 pshufb %xmm6, %xmm12 314 movdqa %xmm10, %xmm2 # 2 : 1/iak 315 movdqa %xmm10, %xmm8 316 pxor %xmm5, %xmm4 # 4 = jak = 1/j + a/k 317 pxor %xmm13, %xmm12 318 pshufb %xmm3, %xmm2 # 2 = 1/iak 319 pshufb %xmm11, %xmm8 320 movdqa %xmm10, %xmm3 # 3 : 1/jak 321 movdqa %xmm10, %xmm11 322 pxor %xmm0, %xmm2 # 2 = io 323 pxor %xmm6, %xmm8 324 pshufb %xmm4, %xmm3 # 3 = 1/jak 325 pshufb %xmm12, %xmm11 326 movdqu (%r9), %xmm5 327 # Also use %xmm5 in the second instance. 328 pxor %xmm1, %xmm3 # 3 = jo 329 pxor %xmm7, %xmm11 330 jnz .Lenc2x_loop 331 332 # middle of last round 333 movdqa -0x60(%r10), %xmm4 # 3 : sbou .Lk_sbo 334 movdqa -0x50(%r10), %xmm0 # 0 : sbot .Lk_sbo+16 335 movdqa %xmm4, %xmm12 336 movdqa %xmm0, %xmm6 337 pshufb %xmm2, %xmm4 # 4 = sbou 338 pshufb %xmm8, %xmm12 339 pxor %xmm5, %xmm4 # 4 = sb1u + k 340 pxor %xmm5, %xmm12 341 pshufb %xmm3, %xmm0 # 0 = sb1t 342 pshufb %xmm11, %xmm6 343 movdqa 0x40(%r11,%r10), %xmm1 # .Lk_sr[] 344 # Also use %xmm1 in the second instance. 345 pxor %xmm4, %xmm0 # 0 = A 346 pxor %xmm12, %xmm6 347 pshufb %xmm1, %xmm0 348 pshufb %xmm1, %xmm6 349 ret 350 .cfi_endproc 351 .size _vpaes_encrypt_core_2x,.-_vpaes_encrypt_core_2x 352 353 ## 354 ## Decryption core 355 ## 356 ## Same API as encryption core. 357 ## 358 .type _vpaes_decrypt_core,\@abi-omnipotent 359 .align 16 360 _vpaes_decrypt_core: 361 .cfi_startproc 362 mov %rdx, %r9 # load key 363 mov 240(%rdx),%eax 364 movdqa %xmm9, %xmm1 365 movdqa .Lk_dipt(%rip), %xmm2 # iptlo 366 pandn %xmm0, %xmm1 367 mov %rax, %r11 368 psrld \$4, %xmm1 369 movdqu (%r9), %xmm5 # round0 key 370 shl \$4, %r11 371 pand %xmm9, %xmm0 372 pshufb %xmm0, %xmm2 373 movdqa .Lk_dipt+16(%rip), %xmm0 # ipthi 374 xor \$0x30, %r11 375 lea .Lk_dsbd(%rip),%r10 376 pshufb %xmm1, %xmm0 377 and \$0x30, %r11 378 pxor %xmm5, %xmm2 379 movdqa .Lk_mc_forward+48(%rip), %xmm5 380 pxor %xmm2, %xmm0 381 add \$16, %r9 382 add %r10, %r11 383 jmp .Ldec_entry 384 385 .align 16 386 .Ldec_loop: 387 ## 388 ## Inverse mix columns 389 ## 390 movdqa -0x20(%r10),%xmm4 # 4 : sb9u 391 movdqa -0x10(%r10),%xmm1 # 0 : sb9t 392 pshufb %xmm2, %xmm4 # 4 = sb9u 393 pshufb %xmm3, %xmm1 # 0 = sb9t 394 pxor %xmm4, %xmm0 395 movdqa 0x00(%r10),%xmm4 # 4 : sbdu 396 pxor %xmm1, %xmm0 # 0 = ch 397 movdqa 0x10(%r10),%xmm1 # 0 : sbdt 398 399 pshufb %xmm2, %xmm4 # 4 = sbdu 400 pshufb %xmm5, %xmm0 # MC ch 401 pshufb %xmm3, %xmm1 # 0 = sbdt 402 pxor %xmm4, %xmm0 # 4 = ch 403 movdqa 0x20(%r10),%xmm4 # 4 : sbbu 404 pxor %xmm1, %xmm0 # 0 = ch 405 movdqa 0x30(%r10),%xmm1 # 0 : sbbt 406 407 pshufb %xmm2, %xmm4 # 4 = sbbu 408 pshufb %xmm5, %xmm0 # MC ch 409 pshufb %xmm3, %xmm1 # 0 = sbbt 410 pxor %xmm4, %xmm0 # 4 = ch 411 movdqa 0x40(%r10),%xmm4 # 4 : sbeu 412 pxor %xmm1, %xmm0 # 0 = ch 413 movdqa 0x50(%r10),%xmm1 # 0 : sbet 414 415 pshufb %xmm2, %xmm4 # 4 = sbeu 416 pshufb %xmm5, %xmm0 # MC ch 417 pshufb %xmm3, %xmm1 # 0 = sbet 418 pxor %xmm4, %xmm0 # 4 = ch 419 add \$16, %r9 # next round key 420 palignr \$12, %xmm5, %xmm5 421 pxor %xmm1, %xmm0 # 0 = ch 422 sub \$1,%rax # nr-- 423 424 .Ldec_entry: 425 # top of round 426 movdqa %xmm9, %xmm1 # 1 : i 427 pandn %xmm0, %xmm1 # 1 = i<<4 428 movdqa %xmm11, %xmm2 # 2 : a/k 429 psrld \$4, %xmm1 # 1 = i 430 pand %xmm9, %xmm0 # 0 = k 431 pshufb %xmm0, %xmm2 # 2 = a/k 432 movdqa %xmm10, %xmm3 # 3 : 1/i 433 pxor %xmm1, %xmm0 # 0 = j 434 pshufb %xmm1, %xmm3 # 3 = 1/i 435 movdqa %xmm10, %xmm4 # 4 : 1/j 436 pxor %xmm2, %xmm3 # 3 = iak = 1/i + a/k 437 pshufb %xmm0, %xmm4 # 4 = 1/j 438 pxor %xmm2, %xmm4 # 4 = jak = 1/j + a/k 439 movdqa %xmm10, %xmm2 # 2 : 1/iak 440 pshufb %xmm3, %xmm2 # 2 = 1/iak 441 movdqa %xmm10, %xmm3 # 3 : 1/jak 442 pxor %xmm0, %xmm2 # 2 = io 443 pshufb %xmm4, %xmm3 # 3 = 1/jak 444 movdqu (%r9), %xmm0 445 pxor %xmm1, %xmm3 # 3 = jo 446 jnz .Ldec_loop 447 448 # middle of last round 449 movdqa 0x60(%r10), %xmm4 # 3 : sbou 450 pshufb %xmm2, %xmm4 # 4 = sbou 451 pxor %xmm0, %xmm4 # 4 = sb1u + k 452 movdqa 0x70(%r10), %xmm0 # 0 : sbot 453 movdqa -0x160(%r11), %xmm2 # .Lk_sr-.Lk_dsbd=-0x160 454 pshufb %xmm3, %xmm0 # 0 = sb1t 455 pxor %xmm4, %xmm0 # 0 = A 456 pshufb %xmm2, %xmm0 457 ret 458 .cfi_endproc 459 .size _vpaes_decrypt_core,.-_vpaes_decrypt_core 460 461 ######################################################## 462 ## ## 463 ## AES key schedule ## 464 ## ## 465 ######################################################## 466 .type _vpaes_schedule_core,\@abi-omnipotent 467 .align 16 468 _vpaes_schedule_core: 469 .cfi_startproc 470 # rdi = key 471 # rsi = size in bits 472 # rdx = buffer 473 # rcx = direction. 0=encrypt, 1=decrypt 474 475 call _vpaes_preheat # load the tables 476 movdqa .Lk_rcon(%rip), %xmm8 # load rcon 477 movdqu (%rdi), %xmm0 # load key (unaligned) 478 479 # input transform 480 movdqa %xmm0, %xmm3 481 lea .Lk_ipt(%rip), %r11 482 call _vpaes_schedule_transform 483 movdqa %xmm0, %xmm7 484 485 lea .Lk_sr(%rip),%r10 486 test %rcx, %rcx 487 jnz .Lschedule_am_decrypting 488 489 # encrypting, output zeroth round key after transform 490 movdqu %xmm0, (%rdx) 491 jmp .Lschedule_go 492 493 .Lschedule_am_decrypting: 494 # decrypting, output zeroth round key after shiftrows 495 movdqa (%r8,%r10),%xmm1 496 pshufb %xmm1, %xmm3 497 movdqu %xmm3, (%rdx) 498 xor \$0x30, %r8 499 500 .Lschedule_go: 501 cmp \$192, %esi 502 ja .Lschedule_256 503 je .Lschedule_192 504 # 128: fall though 505 506 ## 507 ## .schedule_128 508 ## 509 ## 128-bit specific part of key schedule. 510 ## 511 ## This schedule is really simple, because all its parts 512 ## are accomplished by the subroutines. 513 ## 514 .Lschedule_128: 515 mov \$10, %esi 516 517 .Loop_schedule_128: 518 call _vpaes_schedule_round 519 dec %rsi 520 jz .Lschedule_mangle_last 521 call _vpaes_schedule_mangle # write output 522 jmp .Loop_schedule_128 523 524 ## 525 ## .aes_schedule_192 526 ## 527 ## 192-bit specific part of key schedule. 528 ## 529 ## The main body of this schedule is the same as the 128-bit 530 ## schedule, but with more smearing. The long, high side is 531 ## stored in %xmm7 as before, and the short, low side is in 532 ## the high bits of %xmm6. 533 ## 534 ## This schedule is somewhat nastier, however, because each 535 ## round produces 192 bits of key material, or 1.5 round keys. 536 ## Therefore, on each cycle we do 2 rounds and produce 3 round 537 ## keys. 538 ## 539 .align 16 540 .Lschedule_192: 541 movdqu 8(%rdi),%xmm0 # load key part 2 (very unaligned) 542 call _vpaes_schedule_transform # input transform 543 movdqa %xmm0, %xmm6 # save short part 544 pxor %xmm4, %xmm4 # clear 4 545 movhlps %xmm4, %xmm6 # clobber low side with zeros 546 mov \$4, %esi 547 548 .Loop_schedule_192: 549 call _vpaes_schedule_round 550 palignr \$8,%xmm6,%xmm0 551 call _vpaes_schedule_mangle # save key n 552 call _vpaes_schedule_192_smear 553 call _vpaes_schedule_mangle # save key n+1 554 call _vpaes_schedule_round 555 dec %rsi 556 jz .Lschedule_mangle_last 557 call _vpaes_schedule_mangle # save key n+2 558 call _vpaes_schedule_192_smear 559 jmp .Loop_schedule_192 560 561 ## 562 ## .aes_schedule_256 563 ## 564 ## 256-bit specific part of key schedule. 565 ## 566 ## The structure here is very similar to the 128-bit 567 ## schedule, but with an additional "low side" in 568 ## %xmm6. The low side's rounds are the same as the 569 ## high side's, except no rcon and no rotation. 570 ## 571 .align 16 572 .Lschedule_256: 573 movdqu 16(%rdi),%xmm0 # load key part 2 (unaligned) 574 call _vpaes_schedule_transform # input transform 575 mov \$7, %esi 576 577 .Loop_schedule_256: 578 call _vpaes_schedule_mangle # output low result 579 movdqa %xmm0, %xmm6 # save cur_lo in xmm6 580 581 # high round 582 call _vpaes_schedule_round 583 dec %rsi 584 jz .Lschedule_mangle_last 585 call _vpaes_schedule_mangle 586 587 # low round. swap xmm7 and xmm6 588 pshufd \$0xFF, %xmm0, %xmm0 589 movdqa %xmm7, %xmm5 590 movdqa %xmm6, %xmm7 591 call _vpaes_schedule_low_round 592 movdqa %xmm5, %xmm7 593 594 jmp .Loop_schedule_256 595 596 597 ## 598 ## .aes_schedule_mangle_last 599 ## 600 ## Mangler for last round of key schedule 601 ## Mangles %xmm0 602 ## when encrypting, outputs out(%xmm0) ^ 63 603 ## when decrypting, outputs unskew(%xmm0) 604 ## 605 ## Always called right before return... jumps to cleanup and exits 606 ## 607 .align 16 608 .Lschedule_mangle_last: 609 # schedule last round key from xmm0 610 lea .Lk_deskew(%rip),%r11 # prepare to deskew 611 test %rcx, %rcx 612 jnz .Lschedule_mangle_last_dec 613 614 # encrypting 615 movdqa (%r8,%r10),%xmm1 616 pshufb %xmm1, %xmm0 # output permute 617 lea .Lk_opt(%rip), %r11 # prepare to output transform 618 add \$32, %rdx 619 620 .Lschedule_mangle_last_dec: 621 add \$-16, %rdx 622 pxor .Lk_s63(%rip), %xmm0 623 call _vpaes_schedule_transform # output transform 624 movdqu %xmm0, (%rdx) # save last key 625 626 # cleanup 627 pxor %xmm0, %xmm0 628 pxor %xmm1, %xmm1 629 pxor %xmm2, %xmm2 630 pxor %xmm3, %xmm3 631 pxor %xmm4, %xmm4 632 pxor %xmm5, %xmm5 633 pxor %xmm6, %xmm6 634 pxor %xmm7, %xmm7 635 ret 636 .cfi_endproc 637 .size _vpaes_schedule_core,.-_vpaes_schedule_core 638 639 ## 640 ## .aes_schedule_192_smear 641 ## 642 ## Smear the short, low side in the 192-bit key schedule. 643 ## 644 ## Inputs: 645 ## %xmm7: high side, b a x y 646 ## %xmm6: low side, d c 0 0 647 ## %xmm13: 0 648 ## 649 ## Outputs: 650 ## %xmm6: b+c+d b+c 0 0 651 ## %xmm0: b+c+d b+c b a 652 ## 653 .type _vpaes_schedule_192_smear,\@abi-omnipotent 654 .align 16 655 _vpaes_schedule_192_smear: 656 .cfi_startproc 657 pshufd \$0x80, %xmm6, %xmm1 # d c 0 0 -> c 0 0 0 658 pshufd \$0xFE, %xmm7, %xmm0 # b a _ _ -> b b b a 659 pxor %xmm1, %xmm6 # -> c+d c 0 0 660 pxor %xmm1, %xmm1 661 pxor %xmm0, %xmm6 # -> b+c+d b+c b a 662 movdqa %xmm6, %xmm0 663 movhlps %xmm1, %xmm6 # clobber low side with zeros 664 ret 665 .cfi_endproc 666 .size _vpaes_schedule_192_smear,.-_vpaes_schedule_192_smear 667 668 ## 669 ## .aes_schedule_round 670 ## 671 ## Runs one main round of the key schedule on %xmm0, %xmm7 672 ## 673 ## Specifically, runs subbytes on the high dword of %xmm0 674 ## then rotates it by one byte and xors into the low dword of 675 ## %xmm7. 676 ## 677 ## Adds rcon from low byte of %xmm8, then rotates %xmm8 for 678 ## next rcon. 679 ## 680 ## Smears the dwords of %xmm7 by xoring the low into the 681 ## second low, result into third, result into highest. 682 ## 683 ## Returns results in %xmm7 = %xmm0. 684 ## Clobbers %xmm1-%xmm4, %r11. 685 ## 686 .type _vpaes_schedule_round,\@abi-omnipotent 687 .align 16 688 _vpaes_schedule_round: 689 .cfi_startproc 690 # extract rcon from xmm8 691 pxor %xmm1, %xmm1 692 palignr \$15, %xmm8, %xmm1 693 palignr \$15, %xmm8, %xmm8 694 pxor %xmm1, %xmm7 695 696 # rotate 697 pshufd \$0xFF, %xmm0, %xmm0 698 palignr \$1, %xmm0, %xmm0 699 700 # fall through... 701 702 # low round: same as high round, but no rotation and no rcon. 703 _vpaes_schedule_low_round: 704 # smear xmm7 705 movdqa %xmm7, %xmm1 706 pslldq \$4, %xmm7 707 pxor %xmm1, %xmm7 708 movdqa %xmm7, %xmm1 709 pslldq \$8, %xmm7 710 pxor %xmm1, %xmm7 711 pxor .Lk_s63(%rip), %xmm7 712 713 # subbytes 714 movdqa %xmm9, %xmm1 715 pandn %xmm0, %xmm1 716 psrld \$4, %xmm1 # 1 = i 717 pand %xmm9, %xmm0 # 0 = k 718 movdqa %xmm11, %xmm2 # 2 : a/k 719 pshufb %xmm0, %xmm2 # 2 = a/k 720 pxor %xmm1, %xmm0 # 0 = j 721 movdqa %xmm10, %xmm3 # 3 : 1/i 722 pshufb %xmm1, %xmm3 # 3 = 1/i 723 pxor %xmm2, %xmm3 # 3 = iak = 1/i + a/k 724 movdqa %xmm10, %xmm4 # 4 : 1/j 725 pshufb %xmm0, %xmm4 # 4 = 1/j 726 pxor %xmm2, %xmm4 # 4 = jak = 1/j + a/k 727 movdqa %xmm10, %xmm2 # 2 : 1/iak 728 pshufb %xmm3, %xmm2 # 2 = 1/iak 729 pxor %xmm0, %xmm2 # 2 = io 730 movdqa %xmm10, %xmm3 # 3 : 1/jak 731 pshufb %xmm4, %xmm3 # 3 = 1/jak 732 pxor %xmm1, %xmm3 # 3 = jo 733 movdqa %xmm13, %xmm4 # 4 : sbou 734 pshufb %xmm2, %xmm4 # 4 = sbou 735 movdqa %xmm12, %xmm0 # 0 : sbot 736 pshufb %xmm3, %xmm0 # 0 = sb1t 737 pxor %xmm4, %xmm0 # 0 = sbox output 738 739 # add in smeared stuff 740 pxor %xmm7, %xmm0 741 movdqa %xmm0, %xmm7 742 ret 743 .cfi_endproc 744 .size _vpaes_schedule_round,.-_vpaes_schedule_round 745 746 ## 747 ## .aes_schedule_transform 748 ## 749 ## Linear-transform %xmm0 according to tables at (%r11) 750 ## 751 ## Requires that %xmm9 = 0x0F0F... as in preheat 752 ## Output in %xmm0 753 ## Clobbers %xmm1, %xmm2 754 ## 755 .type _vpaes_schedule_transform,\@abi-omnipotent 756 .align 16 757 _vpaes_schedule_transform: 758 .cfi_startproc 759 movdqa %xmm9, %xmm1 760 pandn %xmm0, %xmm1 761 psrld \$4, %xmm1 762 pand %xmm9, %xmm0 763 movdqa (%r11), %xmm2 # lo 764 pshufb %xmm0, %xmm2 765 movdqa 16(%r11), %xmm0 # hi 766 pshufb %xmm1, %xmm0 767 pxor %xmm2, %xmm0 768 ret 769 .cfi_endproc 770 .size _vpaes_schedule_transform,.-_vpaes_schedule_transform 771 772 ## 773 ## .aes_schedule_mangle 774 ## 775 ## Mangle xmm0 from (basis-transformed) standard version 776 ## to our version. 777 ## 778 ## On encrypt, 779 ## xor with 0x63 780 ## multiply by circulant 0,1,1,1 781 ## apply shiftrows transform 782 ## 783 ## On decrypt, 784 ## xor with 0x63 785 ## multiply by "inverse mixcolumns" circulant E,B,D,9 786 ## deskew 787 ## apply shiftrows transform 788 ## 789 ## 790 ## Writes out to (%rdx), and increments or decrements it 791 ## Keeps track of round number mod 4 in %r8 792 ## Preserves xmm0 793 ## Clobbers xmm1-xmm5 794 ## 795 .type _vpaes_schedule_mangle,\@abi-omnipotent 796 .align 16 797 _vpaes_schedule_mangle: 798 .cfi_startproc 799 movdqa %xmm0, %xmm4 # save xmm0 for later 800 movdqa .Lk_mc_forward(%rip),%xmm5 801 test %rcx, %rcx 802 jnz .Lschedule_mangle_dec 803 804 # encrypting 805 add \$16, %rdx 806 pxor .Lk_s63(%rip),%xmm4 807 pshufb %xmm5, %xmm4 808 movdqa %xmm4, %xmm3 809 pshufb %xmm5, %xmm4 810 pxor %xmm4, %xmm3 811 pshufb %xmm5, %xmm4 812 pxor %xmm4, %xmm3 813 814 jmp .Lschedule_mangle_both 815 .align 16 816 .Lschedule_mangle_dec: 817 # inverse mix columns 818 lea .Lk_dksd(%rip),%r11 819 movdqa %xmm9, %xmm1 820 pandn %xmm4, %xmm1 821 psrld \$4, %xmm1 # 1 = hi 822 pand %xmm9, %xmm4 # 4 = lo 823 824 movdqa 0x00(%r11), %xmm2 825 pshufb %xmm4, %xmm2 826 movdqa 0x10(%r11), %xmm3 827 pshufb %xmm1, %xmm3 828 pxor %xmm2, %xmm3 829 pshufb %xmm5, %xmm3 830 831 movdqa 0x20(%r11), %xmm2 832 pshufb %xmm4, %xmm2 833 pxor %xmm3, %xmm2 834 movdqa 0x30(%r11), %xmm3 835 pshufb %xmm1, %xmm3 836 pxor %xmm2, %xmm3 837 pshufb %xmm5, %xmm3 838 839 movdqa 0x40(%r11), %xmm2 840 pshufb %xmm4, %xmm2 841 pxor %xmm3, %xmm2 842 movdqa 0x50(%r11), %xmm3 843 pshufb %xmm1, %xmm3 844 pxor %xmm2, %xmm3 845 pshufb %xmm5, %xmm3 846 847 movdqa 0x60(%r11), %xmm2 848 pshufb %xmm4, %xmm2 849 pxor %xmm3, %xmm2 850 movdqa 0x70(%r11), %xmm3 851 pshufb %xmm1, %xmm3 852 pxor %xmm2, %xmm3 853 854 add \$-16, %rdx 855 856 .Lschedule_mangle_both: 857 movdqa (%r8,%r10),%xmm1 858 pshufb %xmm1,%xmm3 859 add \$-16, %r8 860 and \$0x30, %r8 861 movdqu %xmm3, (%rdx) 862 ret 863 .cfi_endproc 864 .size _vpaes_schedule_mangle,.-_vpaes_schedule_mangle 865 866 # 867 # Interface to OpenSSL 868 # 869 .globl ${PREFIX}_set_encrypt_key 870 .type ${PREFIX}_set_encrypt_key,\@function,3 871 .align 16 872 ${PREFIX}_set_encrypt_key: 873 .cfi_startproc 874 #ifndef NDEBUG 875 #ifndef BORINGSSL_FIPS 876 .extern BORINGSSL_function_hit 877 movb \$1, BORINGSSL_function_hit+5(%rip) 878 #endif 879 #endif 880 881 ___ 882 $code.=<<___ if ($win64); 883 lea -0xb8(%rsp),%rsp 884 movaps %xmm6,0x10(%rsp) 885 movaps %xmm7,0x20(%rsp) 886 movaps %xmm8,0x30(%rsp) 887 movaps %xmm9,0x40(%rsp) 888 movaps %xmm10,0x50(%rsp) 889 movaps %xmm11,0x60(%rsp) 890 movaps %xmm12,0x70(%rsp) 891 movaps %xmm13,0x80(%rsp) 892 movaps %xmm14,0x90(%rsp) 893 movaps %xmm15,0xa0(%rsp) 894 .Lenc_key_body: 895 ___ 896 $code.=<<___; 897 mov %esi,%eax 898 shr \$5,%eax 899 add \$5,%eax 900 mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5; 901 902 mov \$0,%ecx 903 mov \$0x30,%r8d 904 call _vpaes_schedule_core 905 ___ 906 $code.=<<___ if ($win64); 907 movaps 0x10(%rsp),%xmm6 908 movaps 0x20(%rsp),%xmm7 909 movaps 0x30(%rsp),%xmm8 910 movaps 0x40(%rsp),%xmm9 911 movaps 0x50(%rsp),%xmm10 912 movaps 0x60(%rsp),%xmm11 913 movaps 0x70(%rsp),%xmm12 914 movaps 0x80(%rsp),%xmm13 915 movaps 0x90(%rsp),%xmm14 916 movaps 0xa0(%rsp),%xmm15 917 lea 0xb8(%rsp),%rsp 918 .Lenc_key_epilogue: 919 ___ 920 $code.=<<___; 921 xor %eax,%eax 922 ret 923 .cfi_endproc 924 .size ${PREFIX}_set_encrypt_key,.-${PREFIX}_set_encrypt_key 925 926 .globl ${PREFIX}_set_decrypt_key 927 .type ${PREFIX}_set_decrypt_key,\@function,3 928 .align 16 929 ${PREFIX}_set_decrypt_key: 930 .cfi_startproc 931 ___ 932 $code.=<<___ if ($win64); 933 lea -0xb8(%rsp),%rsp 934 movaps %xmm6,0x10(%rsp) 935 movaps %xmm7,0x20(%rsp) 936 movaps %xmm8,0x30(%rsp) 937 movaps %xmm9,0x40(%rsp) 938 movaps %xmm10,0x50(%rsp) 939 movaps %xmm11,0x60(%rsp) 940 movaps %xmm12,0x70(%rsp) 941 movaps %xmm13,0x80(%rsp) 942 movaps %xmm14,0x90(%rsp) 943 movaps %xmm15,0xa0(%rsp) 944 .Ldec_key_body: 945 ___ 946 $code.=<<___; 947 mov %esi,%eax 948 shr \$5,%eax 949 add \$5,%eax 950 mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5; 951 shl \$4,%eax 952 lea 16(%rdx,%rax),%rdx 953 954 mov \$1,%ecx 955 mov %esi,%r8d 956 shr \$1,%r8d 957 and \$32,%r8d 958 xor \$32,%r8d # nbits==192?0:32 959 call _vpaes_schedule_core 960 ___ 961 $code.=<<___ if ($win64); 962 movaps 0x10(%rsp),%xmm6 963 movaps 0x20(%rsp),%xmm7 964 movaps 0x30(%rsp),%xmm8 965 movaps 0x40(%rsp),%xmm9 966 movaps 0x50(%rsp),%xmm10 967 movaps 0x60(%rsp),%xmm11 968 movaps 0x70(%rsp),%xmm12 969 movaps 0x80(%rsp),%xmm13 970 movaps 0x90(%rsp),%xmm14 971 movaps 0xa0(%rsp),%xmm15 972 lea 0xb8(%rsp),%rsp 973 .Ldec_key_epilogue: 974 ___ 975 $code.=<<___; 976 xor %eax,%eax 977 ret 978 .cfi_endproc 979 .size ${PREFIX}_set_decrypt_key,.-${PREFIX}_set_decrypt_key 980 981 .globl ${PREFIX}_encrypt 982 .type ${PREFIX}_encrypt,\@function,3 983 .align 16 984 ${PREFIX}_encrypt: 985 .cfi_startproc 986 #ifndef NDEBUG 987 #ifndef BORINGSSL_FIPS 988 .extern BORINGSSL_function_hit 989 movb \$1, BORINGSSL_function_hit+4(%rip) 990 #endif 991 #endif 992 ___ 993 $code.=<<___ if ($win64); 994 lea -0xb8(%rsp),%rsp 995 movaps %xmm6,0x10(%rsp) 996 movaps %xmm7,0x20(%rsp) 997 movaps %xmm8,0x30(%rsp) 998 movaps %xmm9,0x40(%rsp) 999 movaps %xmm10,0x50(%rsp) 1000 movaps %xmm11,0x60(%rsp) 1001 movaps %xmm12,0x70(%rsp) 1002 movaps %xmm13,0x80(%rsp) 1003 movaps %xmm14,0x90(%rsp) 1004 movaps %xmm15,0xa0(%rsp) 1005 .Lenc_body: 1006 ___ 1007 $code.=<<___; 1008 movdqu (%rdi),%xmm0 1009 call _vpaes_preheat 1010 call _vpaes_encrypt_core 1011 movdqu %xmm0,(%rsi) 1012 ___ 1013 $code.=<<___ if ($win64); 1014 movaps 0x10(%rsp),%xmm6 1015 movaps 0x20(%rsp),%xmm7 1016 movaps 0x30(%rsp),%xmm8 1017 movaps 0x40(%rsp),%xmm9 1018 movaps 0x50(%rsp),%xmm10 1019 movaps 0x60(%rsp),%xmm11 1020 movaps 0x70(%rsp),%xmm12 1021 movaps 0x80(%rsp),%xmm13 1022 movaps 0x90(%rsp),%xmm14 1023 movaps 0xa0(%rsp),%xmm15 1024 lea 0xb8(%rsp),%rsp 1025 .Lenc_epilogue: 1026 ___ 1027 $code.=<<___; 1028 ret 1029 .cfi_endproc 1030 .size ${PREFIX}_encrypt,.-${PREFIX}_encrypt 1031 1032 .globl ${PREFIX}_decrypt 1033 .type ${PREFIX}_decrypt,\@function,3 1034 .align 16 1035 ${PREFIX}_decrypt: 1036 .cfi_startproc 1037 ___ 1038 $code.=<<___ if ($win64); 1039 lea -0xb8(%rsp),%rsp 1040 movaps %xmm6,0x10(%rsp) 1041 movaps %xmm7,0x20(%rsp) 1042 movaps %xmm8,0x30(%rsp) 1043 movaps %xmm9,0x40(%rsp) 1044 movaps %xmm10,0x50(%rsp) 1045 movaps %xmm11,0x60(%rsp) 1046 movaps %xmm12,0x70(%rsp) 1047 movaps %xmm13,0x80(%rsp) 1048 movaps %xmm14,0x90(%rsp) 1049 movaps %xmm15,0xa0(%rsp) 1050 .Ldec_body: 1051 ___ 1052 $code.=<<___; 1053 movdqu (%rdi),%xmm0 1054 call _vpaes_preheat 1055 call _vpaes_decrypt_core 1056 movdqu %xmm0,(%rsi) 1057 ___ 1058 $code.=<<___ if ($win64); 1059 movaps 0x10(%rsp),%xmm6 1060 movaps 0x20(%rsp),%xmm7 1061 movaps 0x30(%rsp),%xmm8 1062 movaps 0x40(%rsp),%xmm9 1063 movaps 0x50(%rsp),%xmm10 1064 movaps 0x60(%rsp),%xmm11 1065 movaps 0x70(%rsp),%xmm12 1066 movaps 0x80(%rsp),%xmm13 1067 movaps 0x90(%rsp),%xmm14 1068 movaps 0xa0(%rsp),%xmm15 1069 lea 0xb8(%rsp),%rsp 1070 .Ldec_epilogue: 1071 ___ 1072 $code.=<<___; 1073 ret 1074 .cfi_endproc 1075 .size ${PREFIX}_decrypt,.-${PREFIX}_decrypt 1076 ___ 1077 { 1078 my ($inp,$out,$len,$key,$ivp,$enc)=("%rdi","%rsi","%rdx","%rcx","%r8","%r9"); 1079 # void AES_cbc_encrypt (const void char *inp, unsigned char *out, 1080 # size_t length, const AES_KEY *key, 1081 # unsigned char *ivp,const int enc); 1082 $code.=<<___; 1083 .globl ${PREFIX}_cbc_encrypt 1084 .type ${PREFIX}_cbc_encrypt,\@function,6 1085 .align 16 1086 ${PREFIX}_cbc_encrypt: 1087 .cfi_startproc 1088 xchg $key,$len 1089 ___ 1090 ($len,$key)=($key,$len); 1091 $code.=<<___; 1092 sub \$16,$len 1093 jc .Lcbc_abort 1094 ___ 1095 $code.=<<___ if ($win64); 1096 lea -0xb8(%rsp),%rsp 1097 movaps %xmm6,0x10(%rsp) 1098 movaps %xmm7,0x20(%rsp) 1099 movaps %xmm8,0x30(%rsp) 1100 movaps %xmm9,0x40(%rsp) 1101 movaps %xmm10,0x50(%rsp) 1102 movaps %xmm11,0x60(%rsp) 1103 movaps %xmm12,0x70(%rsp) 1104 movaps %xmm13,0x80(%rsp) 1105 movaps %xmm14,0x90(%rsp) 1106 movaps %xmm15,0xa0(%rsp) 1107 .Lcbc_body: 1108 ___ 1109 $code.=<<___; 1110 movdqu ($ivp),%xmm6 # load IV 1111 sub $inp,$out 1112 call _vpaes_preheat 1113 cmp \$0,${enc}d 1114 je .Lcbc_dec_loop 1115 jmp .Lcbc_enc_loop 1116 .align 16 1117 .Lcbc_enc_loop: 1118 movdqu ($inp),%xmm0 1119 pxor %xmm6,%xmm0 1120 call _vpaes_encrypt_core 1121 movdqa %xmm0,%xmm6 1122 movdqu %xmm0,($out,$inp) 1123 lea 16($inp),$inp 1124 sub \$16,$len 1125 jnc .Lcbc_enc_loop 1126 jmp .Lcbc_done 1127 .align 16 1128 .Lcbc_dec_loop: 1129 movdqu ($inp),%xmm0 1130 movdqa %xmm0,%xmm7 1131 call _vpaes_decrypt_core 1132 pxor %xmm6,%xmm0 1133 movdqa %xmm7,%xmm6 1134 movdqu %xmm0,($out,$inp) 1135 lea 16($inp),$inp 1136 sub \$16,$len 1137 jnc .Lcbc_dec_loop 1138 .Lcbc_done: 1139 movdqu %xmm6,($ivp) # save IV 1140 ___ 1141 $code.=<<___ if ($win64); 1142 movaps 0x10(%rsp),%xmm6 1143 movaps 0x20(%rsp),%xmm7 1144 movaps 0x30(%rsp),%xmm8 1145 movaps 0x40(%rsp),%xmm9 1146 movaps 0x50(%rsp),%xmm10 1147 movaps 0x60(%rsp),%xmm11 1148 movaps 0x70(%rsp),%xmm12 1149 movaps 0x80(%rsp),%xmm13 1150 movaps 0x90(%rsp),%xmm14 1151 movaps 0xa0(%rsp),%xmm15 1152 lea 0xb8(%rsp),%rsp 1153 .Lcbc_epilogue: 1154 ___ 1155 $code.=<<___; 1156 .Lcbc_abort: 1157 ret 1158 .cfi_endproc 1159 .size ${PREFIX}_cbc_encrypt,.-${PREFIX}_cbc_encrypt 1160 ___ 1161 } 1162 { 1163 my ($inp,$out,$blocks,$key,$ivp)=("%rdi","%rsi","%rdx","%rcx","%r8"); 1164 # void vpaes_ctr32_encrypt_blocks(const uint8_t *inp, uint8_t *out, 1165 # size_t blocks, const AES_KEY *key, 1166 # const uint8_t ivp[16]); 1167 $code.=<<___; 1168 .globl ${PREFIX}_ctr32_encrypt_blocks 1169 .type ${PREFIX}_ctr32_encrypt_blocks,\@function,5 1170 .align 16 1171 ${PREFIX}_ctr32_encrypt_blocks: 1172 .cfi_startproc 1173 # _vpaes_encrypt_core and _vpaes_encrypt_core_2x expect the key in %rdx. 1174 xchg $key, $blocks 1175 ___ 1176 ($blocks,$key)=($key,$blocks); 1177 $code.=<<___; 1178 test $blocks, $blocks 1179 jz .Lctr32_abort 1180 ___ 1181 $code.=<<___ if ($win64); 1182 lea -0xb8(%rsp),%rsp 1183 movaps %xmm6,0x10(%rsp) 1184 movaps %xmm7,0x20(%rsp) 1185 movaps %xmm8,0x30(%rsp) 1186 movaps %xmm9,0x40(%rsp) 1187 movaps %xmm10,0x50(%rsp) 1188 movaps %xmm11,0x60(%rsp) 1189 movaps %xmm12,0x70(%rsp) 1190 movaps %xmm13,0x80(%rsp) 1191 movaps %xmm14,0x90(%rsp) 1192 movaps %xmm15,0xa0(%rsp) 1193 .Lctr32_body: 1194 ___ 1195 $code.=<<___; 1196 movdqu ($ivp), %xmm0 # Load IV. 1197 movdqa .Lctr_add_one(%rip), %xmm8 1198 sub $inp, $out # This allows only incrementing $inp. 1199 call _vpaes_preheat 1200 movdqa %xmm0, %xmm6 1201 pshufb .Lrev_ctr(%rip), %xmm6 1202 1203 test \$1, $blocks 1204 jz .Lctr32_prep_loop 1205 1206 # Handle one block so the remaining block count is even for 1207 # _vpaes_encrypt_core_2x. 1208 movdqu ($inp), %xmm7 # Load input. 1209 call _vpaes_encrypt_core 1210 pxor %xmm7, %xmm0 1211 paddd %xmm8, %xmm6 1212 movdqu %xmm0, ($out,$inp) 1213 sub \$1, $blocks 1214 lea 16($inp), $inp 1215 jz .Lctr32_done 1216 1217 .Lctr32_prep_loop: 1218 # _vpaes_encrypt_core_2x leaves only %xmm14 and %xmm15 as spare 1219 # registers. We maintain two byte-swapped counters in them. 1220 movdqa %xmm6, %xmm14 1221 movdqa %xmm6, %xmm15 1222 paddd %xmm8, %xmm15 1223 1224 .Lctr32_loop: 1225 movdqa .Lrev_ctr(%rip), %xmm1 # Set up counters. 1226 movdqa %xmm14, %xmm0 1227 movdqa %xmm15, %xmm6 1228 pshufb %xmm1, %xmm0 1229 pshufb %xmm1, %xmm6 1230 call _vpaes_encrypt_core_2x 1231 movdqu ($inp), %xmm1 # Load input. 1232 movdqu 16($inp), %xmm2 1233 movdqa .Lctr_add_two(%rip), %xmm3 1234 pxor %xmm1, %xmm0 # XOR input. 1235 pxor %xmm2, %xmm6 1236 paddd %xmm3, %xmm14 # Increment counters. 1237 paddd %xmm3, %xmm15 1238 movdqu %xmm0, ($out,$inp) # Write output. 1239 movdqu %xmm6, 16($out,$inp) 1240 sub \$2, $blocks # Advance loop. 1241 lea 32($inp), $inp 1242 jnz .Lctr32_loop 1243 1244 .Lctr32_done: 1245 ___ 1246 $code.=<<___ if ($win64); 1247 movaps 0x10(%rsp),%xmm6 1248 movaps 0x20(%rsp),%xmm7 1249 movaps 0x30(%rsp),%xmm8 1250 movaps 0x40(%rsp),%xmm9 1251 movaps 0x50(%rsp),%xmm10 1252 movaps 0x60(%rsp),%xmm11 1253 movaps 0x70(%rsp),%xmm12 1254 movaps 0x80(%rsp),%xmm13 1255 movaps 0x90(%rsp),%xmm14 1256 movaps 0xa0(%rsp),%xmm15 1257 lea 0xb8(%rsp),%rsp 1258 .Lctr32_epilogue: 1259 ___ 1260 $code.=<<___; 1261 .Lctr32_abort: 1262 ret 1263 .cfi_endproc 1264 .size ${PREFIX}_ctr32_encrypt_blocks,.-${PREFIX}_ctr32_encrypt_blocks 1265 ___ 1266 } 1267 $code.=<<___; 1268 ## 1269 ## _aes_preheat 1270 ## 1271 ## Fills register %r10 -> .aes_consts (so you can -fPIC) 1272 ## and %xmm9-%xmm15 as specified below. 1273 ## 1274 .type _vpaes_preheat,\@abi-omnipotent 1275 .align 16 1276 _vpaes_preheat: 1277 .cfi_startproc 1278 lea .Lk_s0F(%rip), %r10 1279 movdqa -0x20(%r10), %xmm10 # .Lk_inv 1280 movdqa -0x10(%r10), %xmm11 # .Lk_inv+16 1281 movdqa 0x00(%r10), %xmm9 # .Lk_s0F 1282 movdqa 0x30(%r10), %xmm13 # .Lk_sb1 1283 movdqa 0x40(%r10), %xmm12 # .Lk_sb1+16 1284 movdqa 0x50(%r10), %xmm15 # .Lk_sb2 1285 movdqa 0x60(%r10), %xmm14 # .Lk_sb2+16 1286 ret 1287 .cfi_endproc 1288 .size _vpaes_preheat,.-_vpaes_preheat 1289 ######################################################## 1290 ## ## 1291 ## Constants ## 1292 ## ## 1293 ######################################################## 1294 .type _vpaes_consts,\@object 1295 .align 64 1296 _vpaes_consts: 1297 .Lk_inv: # inv, inva 1298 .quad 0x0E05060F0D080180, 0x040703090A0B0C02 1299 .quad 0x01040A060F0B0780, 0x030D0E0C02050809 1300 1301 .Lk_s0F: # s0F 1302 .quad 0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F 1303 1304 .Lk_ipt: # input transform (lo, hi) 1305 .quad 0xC2B2E8985A2A7000, 0xCABAE09052227808 1306 .quad 0x4C01307D317C4D00, 0xCD80B1FCB0FDCC81 1307 1308 .Lk_sb1: # sb1u, sb1t 1309 .quad 0xB19BE18FCB503E00, 0xA5DF7A6E142AF544 1310 .quad 0x3618D415FAE22300, 0x3BF7CCC10D2ED9EF 1311 .Lk_sb2: # sb2u, sb2t 1312 .quad 0xE27A93C60B712400, 0x5EB7E955BC982FCD 1313 .quad 0x69EB88400AE12900, 0xC2A163C8AB82234A 1314 .Lk_sbo: # sbou, sbot 1315 .quad 0xD0D26D176FBDC700, 0x15AABF7AC502A878 1316 .quad 0xCFE474A55FBB6A00, 0x8E1E90D1412B35FA 1317 1318 .Lk_mc_forward: # mc_forward 1319 .quad 0x0407060500030201, 0x0C0F0E0D080B0A09 1320 .quad 0x080B0A0904070605, 0x000302010C0F0E0D 1321 .quad 0x0C0F0E0D080B0A09, 0x0407060500030201 1322 .quad 0x000302010C0F0E0D, 0x080B0A0904070605 1323 1324 .Lk_mc_backward:# mc_backward 1325 .quad 0x0605040702010003, 0x0E0D0C0F0A09080B 1326 .quad 0x020100030E0D0C0F, 0x0A09080B06050407 1327 .quad 0x0E0D0C0F0A09080B, 0x0605040702010003 1328 .quad 0x0A09080B06050407, 0x020100030E0D0C0F 1329 1330 .Lk_sr: # sr 1331 .quad 0x0706050403020100, 0x0F0E0D0C0B0A0908 1332 .quad 0x030E09040F0A0500, 0x0B06010C07020D08 1333 .quad 0x0F060D040B020900, 0x070E050C030A0108 1334 .quad 0x0B0E0104070A0D00, 0x0306090C0F020508 1335 1336 .Lk_rcon: # rcon 1337 .quad 0x1F8391B9AF9DEEB6, 0x702A98084D7C7D81 1338 1339 .Lk_s63: # s63: all equal to 0x63 transformed 1340 .quad 0x5B5B5B5B5B5B5B5B, 0x5B5B5B5B5B5B5B5B 1341 1342 .Lk_opt: # output transform 1343 .quad 0xFF9F4929D6B66000, 0xF7974121DEBE6808 1344 .quad 0x01EDBD5150BCEC00, 0xE10D5DB1B05C0CE0 1345 1346 .Lk_deskew: # deskew tables: inverts the sbox's "skew" 1347 .quad 0x07E4A34047A4E300, 0x1DFEB95A5DBEF91A 1348 .quad 0x5F36B5DC83EA6900, 0x2841C2ABF49D1E77 1349 1350 ## 1351 ## Decryption stuff 1352 ## Key schedule constants 1353 ## 1354 .Lk_dksd: # decryption key schedule: invskew x*D 1355 .quad 0xFEB91A5DA3E44700, 0x0740E3A45A1DBEF9 1356 .quad 0x41C277F4B5368300, 0x5FDC69EAAB289D1E 1357 .Lk_dksb: # decryption key schedule: invskew x*B 1358 .quad 0x9A4FCA1F8550D500, 0x03D653861CC94C99 1359 .quad 0x115BEDA7B6FC4A00, 0xD993256F7E3482C8 1360 .Lk_dkse: # decryption key schedule: invskew x*E + 0x63 1361 .quad 0xD5031CCA1FC9D600, 0x53859A4C994F5086 1362 .quad 0xA23196054FDC7BE8, 0xCD5EF96A20B31487 1363 .Lk_dks9: # decryption key schedule: invskew x*9 1364 .quad 0xB6116FC87ED9A700, 0x4AED933482255BFC 1365 .quad 0x4576516227143300, 0x8BB89FACE9DAFDCE 1366 1367 ## 1368 ## Decryption stuff 1369 ## Round function constants 1370 ## 1371 .Lk_dipt: # decryption input transform 1372 .quad 0x0F505B040B545F00, 0x154A411E114E451A 1373 .quad 0x86E383E660056500, 0x12771772F491F194 1374 1375 .Lk_dsb9: # decryption sbox output *9*u, *9*t 1376 .quad 0x851C03539A86D600, 0xCAD51F504F994CC9 1377 .quad 0xC03B1789ECD74900, 0x725E2C9EB2FBA565 1378 .Lk_dsbd: # decryption sbox output *D*u, *D*t 1379 .quad 0x7D57CCDFE6B1A200, 0xF56E9B13882A4439 1380 .quad 0x3CE2FAF724C6CB00, 0x2931180D15DEEFD3 1381 .Lk_dsbb: # decryption sbox output *B*u, *B*t 1382 .quad 0xD022649296B44200, 0x602646F6B0F2D404 1383 .quad 0xC19498A6CD596700, 0xF3FF0C3E3255AA6B 1384 .Lk_dsbe: # decryption sbox output *E*u, *E*t 1385 .quad 0x46F2929626D4D000, 0x2242600464B4F6B0 1386 .quad 0x0C55A6CDFFAAC100, 0x9467F36B98593E32 1387 .Lk_dsbo: # decryption sbox final output 1388 .quad 0x1387EA537EF94000, 0xC7AA6DB9D4943E2D 1389 .quad 0x12D7560F93441D00, 0xCA4B8159D8C58E9C 1390 1391 # .Lrev_ctr is a permutation which byte-swaps the counter portion of the IV. 1392 .Lrev_ctr: 1393 .quad 0x0706050403020100, 0x0c0d0e0f0b0a0908 1394 # .Lctr_add_* may be added to a byte-swapped xmm register to increment the 1395 # counter. The register must be byte-swapped again to form the actual input. 1396 .Lctr_add_one: 1397 .quad 0x0000000000000000, 0x0000000100000000 1398 .Lctr_add_two: 1399 .quad 0x0000000000000000, 0x0000000200000000 1400 1401 .asciz "Vector Permutation AES for x86_64/SSSE3, Mike Hamburg (Stanford University)" 1402 .align 64 1403 .size _vpaes_consts,.-_vpaes_consts 1404 ___ 1405 1406 if ($win64) { 1407 # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame, 1408 # CONTEXT *context,DISPATCHER_CONTEXT *disp) 1409 $rec="%rcx"; 1410 $frame="%rdx"; 1411 $context="%r8"; 1412 $disp="%r9"; 1413 1414 $code.=<<___; 1415 .extern __imp_RtlVirtualUnwind 1416 .type se_handler,\@abi-omnipotent 1417 .align 16 1418 se_handler: 1419 push %rsi 1420 push %rdi 1421 push %rbx 1422 push %rbp 1423 push %r12 1424 push %r13 1425 push %r14 1426 push %r15 1427 pushfq 1428 sub \$64,%rsp 1429 1430 mov 120($context),%rax # pull context->Rax 1431 mov 248($context),%rbx # pull context->Rip 1432 1433 mov 8($disp),%rsi # disp->ImageBase 1434 mov 56($disp),%r11 # disp->HandlerData 1435 1436 mov 0(%r11),%r10d # HandlerData[0] 1437 lea (%rsi,%r10),%r10 # prologue label 1438 cmp %r10,%rbx # context->Rip<prologue label 1439 jb .Lin_prologue 1440 1441 mov 152($context),%rax # pull context->Rsp 1442 1443 mov 4(%r11),%r10d # HandlerData[1] 1444 lea (%rsi,%r10),%r10 # epilogue label 1445 cmp %r10,%rbx # context->Rip>=epilogue label 1446 jae .Lin_prologue 1447 1448 lea 16(%rax),%rsi # %xmm save area 1449 lea 512($context),%rdi # &context.Xmm6 1450 mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax) 1451 .long 0xa548f3fc # cld; rep movsq 1452 lea 0xb8(%rax),%rax # adjust stack pointer 1453 1454 .Lin_prologue: 1455 mov 8(%rax),%rdi 1456 mov 16(%rax),%rsi 1457 mov %rax,152($context) # restore context->Rsp 1458 mov %rsi,168($context) # restore context->Rsi 1459 mov %rdi,176($context) # restore context->Rdi 1460 1461 mov 40($disp),%rdi # disp->ContextRecord 1462 mov $context,%rsi # context 1463 mov \$`1232/8`,%ecx # sizeof(CONTEXT) 1464 .long 0xa548f3fc # cld; rep movsq 1465 1466 mov $disp,%rsi 1467 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER 1468 mov 8(%rsi),%rdx # arg2, disp->ImageBase 1469 mov 0(%rsi),%r8 # arg3, disp->ControlPc 1470 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry 1471 mov 40(%rsi),%r10 # disp->ContextRecord 1472 lea 56(%rsi),%r11 # &disp->HandlerData 1473 lea 24(%rsi),%r12 # &disp->EstablisherFrame 1474 mov %r10,32(%rsp) # arg5 1475 mov %r11,40(%rsp) # arg6 1476 mov %r12,48(%rsp) # arg7 1477 mov %rcx,56(%rsp) # arg8, (NULL) 1478 call *__imp_RtlVirtualUnwind(%rip) 1479 1480 mov \$1,%eax # ExceptionContinueSearch 1481 add \$64,%rsp 1482 popfq 1483 pop %r15 1484 pop %r14 1485 pop %r13 1486 pop %r12 1487 pop %rbp 1488 pop %rbx 1489 pop %rdi 1490 pop %rsi 1491 ret 1492 .size se_handler,.-se_handler 1493 1494 .section .pdata 1495 .align 4 1496 .rva .LSEH_begin_${PREFIX}_set_encrypt_key 1497 .rva .LSEH_end_${PREFIX}_set_encrypt_key 1498 .rva .LSEH_info_${PREFIX}_set_encrypt_key 1499 1500 .rva .LSEH_begin_${PREFIX}_set_decrypt_key 1501 .rva .LSEH_end_${PREFIX}_set_decrypt_key 1502 .rva .LSEH_info_${PREFIX}_set_decrypt_key 1503 1504 .rva .LSEH_begin_${PREFIX}_encrypt 1505 .rva .LSEH_end_${PREFIX}_encrypt 1506 .rva .LSEH_info_${PREFIX}_encrypt 1507 1508 .rva .LSEH_begin_${PREFIX}_decrypt 1509 .rva .LSEH_end_${PREFIX}_decrypt 1510 .rva .LSEH_info_${PREFIX}_decrypt 1511 1512 .rva .LSEH_begin_${PREFIX}_cbc_encrypt 1513 .rva .LSEH_end_${PREFIX}_cbc_encrypt 1514 .rva .LSEH_info_${PREFIX}_cbc_encrypt 1515 1516 .rva .LSEH_begin_${PREFIX}_ctr32_encrypt_blocks 1517 .rva .LSEH_end_${PREFIX}_ctr32_encrypt_blocks 1518 .rva .LSEH_info_${PREFIX}_ctr32_encrypt_blocks 1519 1520 .section .xdata 1521 .align 8 1522 .LSEH_info_${PREFIX}_set_encrypt_key: 1523 .byte 9,0,0,0 1524 .rva se_handler 1525 .rva .Lenc_key_body,.Lenc_key_epilogue # HandlerData[] 1526 .LSEH_info_${PREFIX}_set_decrypt_key: 1527 .byte 9,0,0,0 1528 .rva se_handler 1529 .rva .Ldec_key_body,.Ldec_key_epilogue # HandlerData[] 1530 .LSEH_info_${PREFIX}_encrypt: 1531 .byte 9,0,0,0 1532 .rva se_handler 1533 .rva .Lenc_body,.Lenc_epilogue # HandlerData[] 1534 .LSEH_info_${PREFIX}_decrypt: 1535 .byte 9,0,0,0 1536 .rva se_handler 1537 .rva .Ldec_body,.Ldec_epilogue # HandlerData[] 1538 .LSEH_info_${PREFIX}_cbc_encrypt: 1539 .byte 9,0,0,0 1540 .rva se_handler 1541 .rva .Lcbc_body,.Lcbc_epilogue # HandlerData[] 1542 .LSEH_info_${PREFIX}_ctr32_encrypt_blocks: 1543 .byte 9,0,0,0 1544 .rva se_handler 1545 .rva .Lctr32_body,.Lctr32_epilogue # HandlerData[] 1546 ___ 1547 } 1548 1549 $code =~ s/\`([^\`]*)\`/eval($1)/gem; 1550 1551 print $code; 1552 1553 close STDOUT; 1554
