Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * Bit sliced AES using NEON instructions * * Copyright (C) 2016 Linaro Ltd <ard.biesheuvel@linaro.org> */ /* * The algorithm implemented here is described in detail by the paper * 'Faster and Timing-Attack Resistant AES-GCM' by Emilia Kaesper and * Peter Schwabe (https://eprint.iacr.org/2009/129.pdf) * * This implementation is based primarily on the OpenSSL implementation * for 32-bit ARM written by Andy Polyakov <appro@openssl.org> */ #include <linux/linkage.h> #include <linux/cfi_types.h> #include <asm/assembler.h> .text rounds .req x11 bskey .req x12 .macro in_bs_ch, b0, b1, b2, b3, b4, b5, b6, b7 eor \b2, \b2, \b1 eor \b5, \b5, \b6 eor \b3, \b3, \b0 eor \b6, \b6, \b2 eor \b5, \b5, \b0 eor \b6, \b6, \b3 eor \b3, \b3, \b7 eor \b7, \b7, \b5 eor \b3, \b3, \b4 eor \b4, \b4, \b5 eor \b2, \b2, \b7 eor \b3, \b3, \b1 eor \b1, \b1, \b5 .endm .macro out_bs_ch, b0, b1, b2, b3, b4, b5, b6, b7 eor \b0, \b0, \b6 eor \b1, \b1, \b4 eor \b4, \b4, \b6 eor \b2, \b2, \b0 eor \b6, \b6, \b1 eor \b1, \b1, \b5 eor \b5, \b5, \b3 eor \b3, \b3, \b7 eor \b7, \b7, \b5 eor \b2, \b2, \b5 eor \b4, \b4, \b7 .endm .macro inv_in_bs_ch, b6, b1, b2, b4, b7, b0, b3, b5 eor \b1, \b1, \b7 eor \b4, \b4, \b7 eor \b7, \b7, \b5 eor \b1, \b1, \b3 eor \b2, \b2, \b5 eor \b3, \b3, \b7 eor \b6, \b6, \b1 eor \b2, \b2, \b0 eor \b5, \b5, \b3 eor \b4, \b4, \b6 eor \b0, \b0, \b6 eor \b1, \b1, \b4 .endm .macro inv_out_bs_ch, b6, b5, b0, b3, b7, b1, b4, b2 eor \b1, \b1, \b5 eor \b2, \b2, \b7 eor \b3, \b3, \b1 eor \b4, \b4, \b5 eor \b7, \b7, \b5 eor \b3, \b3, \b4 eor \b5, \b5, \b0 eor \b3, \b3, \b7 eor \b6, \b6, \b2 eor \b2, \b2, \b1 eor \b6, \b6, \b3 eor \b3, \b3, \b0 eor \b5, \b5, \b6 .endm .macro mul_gf4, x0, x1, y0, y1, t0, t1 eor \t0, \y0, \y1 and \t0, \t0, \x0 eor \x0, \x0, \x1 and \t1, \x1, \y0 and \x0, \x0, \y1 eor \x1, \t1, \t0 eor \x0, \x0, \t1 .endm .macro mul_gf4_n_gf4, x0, x1, y0, y1, t0, x2, x3, y2, y3, t1 eor \t0, \y0, \y1 eor \t1, \y2, \y3 and \t0, \t0, \x0 and \t1, \t1, \x2 eor \x0, \x0, \x1 eor \x2, \x2, \x3 and \x1, \x1, \y0 and \x3, \x3, \y2 and \x0, \x0, \y1 and \x2, \x2, \y3 eor \x1, \x1, \x0 eor \x2, \x2, \x3 eor \x0, \x0, \t0 eor \x3, \x3, \t1 .endm .macro mul_gf16_2, x0, x1, x2, x3, x4, x5, x6, x7, \ y0, y1, y2, y3, t0, t1, t2, t3 eor \t0, \x0, \x2 eor \t1, \x1, \x3 mul_gf4 \x0, \x1, \y0, \y1, \t2, \t3 eor \y0, \y0, \y2 eor \y1, \y1, \y3 mul_gf4_n_gf4 \t0, \t1, \y0, \y1, \t3, \x2, \x3, \y2, \y3, \t2 eor \x0, \x0, \t0 eor \x2, \x2, \t0 eor \x1, \x1, \t1 eor \x3, \x3, \t1 eor \t0, \x4, \x6 eor \t1, \x5, \x7 mul_gf4_n_gf4 \t0, \t1, \y0, \y1, \t3, \x6, \x7, \y2, \y3, \t2 eor \y0, \y0, \y2 eor \y1, \y1, \y3 mul_gf4 \x4, \x5, \y0, \y1, \t2, \t3 eor \x4, \x4, \t0 eor \x6, \x6, \t0 eor \x5, \x5, \t1 eor \x7, \x7, \t1 .endm .macro inv_gf256, x0, x1, x2, x3, x4, x5, x6, x7, \ t0, t1, t2, t3, s0, s1, s2, s3 eor \t3, \x4, \x6 eor \t0, \x5, \x7 eor \t1, \x1, \x3 eor \s1, \x7, \x6 eor \s0, \x0, \x2 eor \s3, \t3, \t0 orr \t2, \t0, \t1 and \s2, \t3, \s0 orr \t3, \t3, \s0 eor \s0, \s0, \t1 and \t0, \t0, \t1 eor \t1, \x3, \x2 and \s3, \s3, \s0 and \s1, \s1, \t1 eor \t1, \x4, \x5 eor \s0, \x1, \x0 eor \t3, \t3, \s1 eor \t2, \t2, \s1 and \s1, \t1, \s0 orr \t1, \t1, \s0 eor \t3, \t3, \s3 eor \t0, \t0, \s1 eor \t2, \t2, \s2 eor \t1, \t1, \s3 eor \t0, \t0, \s2 and \s0, \x7, \x3 eor \t1, \t1, \s2 and \s1, \x6, \x2 and \s2, \x5, \x1 orr \s3, \x4, \x0 eor \t3, \t3, \s0 eor \t1, \t1, \s2 eor \s0, \t0, \s3 eor \t2, \t2, \s1 and \s2, \t3, \t1 eor \s1, \t2, \s2 eor \s3, \s0, \s2 bsl \s1, \t1, \s0 not \t0, \s0 bsl \s0, \s1, \s3 bsl \t0, \s1, \s3 bsl \s3, \t3, \t2 eor \t3, \t3, \t2 and \s2, \s0, \s3 eor \t1, \t1, \t0 eor \s2, \s2, \t3 mul_gf16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \ \s3, \s2, \s1, \t1, \s0, \t0, \t2, \t3 .endm .macro sbox, b0, b1, b2, b3, b4, b5, b6, b7, \ t0, t1, t2, t3, s0, s1, s2, s3 in_bs_ch \b0\().16b, \b1\().16b, \b2\().16b, \b3\().16b, \ \b4\().16b, \b5\().16b, \b6\().16b, \b7\().16b inv_gf256 \b6\().16b, \b5\().16b, \b0\().16b, \b3\().16b, \ \b7\().16b, \b1\().16b, \b4\().16b, \b2\().16b, \ \t0\().16b, \t1\().16b, \t2\().16b, \t3\().16b, \ \s0\().16b, \s1\().16b, \s2\().16b, \s3\().16b out_bs_ch \b7\().16b, \b1\().16b, \b4\().16b, \b2\().16b, \ \b6\().16b, \b5\().16b, \b0\().16b, \b3\().16b .endm .macro inv_sbox, b0, b1, b2, b3, b4, b5, b6, b7, \ t0, t1, t2, t3, s0, s1, s2, s3 inv_in_bs_ch \b0\().16b, \b1\().16b, \b2\().16b, \b3\().16b, \ \b4\().16b, \b5\().16b, \b6\().16b, \b7\().16b inv_gf256 \b5\().16b, \b1\().16b, \b2\().16b, \b6\().16b, \ \b3\().16b, \b7\().16b, \b0\().16b, \b4\().16b, \ \t0\().16b, \t1\().16b, \t2\().16b, \t3\().16b, \ \s0\().16b, \s1\().16b, \s2\().16b, \s3\().16b inv_out_bs_ch \b3\().16b, \b7\().16b, \b0\().16b, \b4\().16b, \ \b5\().16b, \b1\().16b, \b2\().16b, \b6\().16b .endm .macro enc_next_rk ldp q16, q17, [bskey], #128 ldp q18, q19, [bskey, #-96] ldp q20, q21, [bskey, #-64] ldp q22, q23, [bskey, #-32] .endm .macro dec_next_rk ldp q16, q17, [bskey, #-128]! ldp q18, q19, [bskey, #32] ldp q20, q21, [bskey, #64] ldp q22, q23, [bskey, #96] .endm .macro add_round_key, x0, x1, x2, x3, x4, x5, x6, x7 eor \x0\().16b, \x0\().16b, v16.16b eor \x1\().16b, \x1\().16b, v17.16b eor \x2\().16b, \x2\().16b, v18.16b eor \x3\().16b, \x3\().16b, v19.16b eor \x4\().16b, \x4\().16b, v20.16b eor \x5\().16b, \x5\().16b, v21.16b eor \x6\().16b, \x6\().16b, v22.16b eor \x7\().16b, \x7\().16b, v23.16b .endm .macro shift_rows, x0, x1, x2, x3, x4, x5, x6, x7, mask tbl \x0\().16b, {\x0\().16b}, \mask\().16b tbl \x1\().16b, {\x1\().16b}, \mask\().16b tbl \x2\().16b, {\x2\().16b}, \mask\().16b tbl \x3\().16b, {\x3\().16b}, \mask\().16b tbl \x4\().16b, {\x4\().16b}, \mask\().16b tbl \x5\().16b, {\x5\().16b}, \mask\().16b tbl \x6\().16b, {\x6\().16b}, \mask\().16b tbl \x7\().16b, {\x7\().16b}, \mask\().16b .endm .macro mix_cols, x0, x1, x2, x3, x4, x5, x6, x7, \ t0, t1, t2, t3, t4, t5, t6, t7, inv ext \t0\().16b, \x0\().16b, \x0\().16b, #12 ext \t1\().16b, \x1\().16b, \x1\().16b, #12 eor \x0\().16b, \x0\().16b, \t0\().16b ext \t2\().16b, \x2\().16b, \x2\().16b, #12 eor \x1\().16b, \x1\().16b, \t1\().16b ext \t3\().16b, \x3\().16b, \x3\().16b, #12 eor \x2\().16b, \x2\().16b, \t2\().16b ext \t4\().16b, \x4\().16b, \x4\().16b, #12 eor \x3\().16b, \x3\().16b, \t3\().16b ext \t5\().16b, \x5\().16b, \x5\().16b, #12 eor \x4\().16b, \x4\().16b, \t4\().16b ext \t6\().16b, \x6\().16b, \x6\().16b, #12 eor \x5\().16b, \x5\().16b, \t5\().16b ext \t7\().16b, \x7\().16b, \x7\().16b, #12 eor \x6\().16b, \x6\().16b, \t6\().16b eor \t1\().16b, \t1\().16b, \x0\().16b eor \x7\().16b, \x7\().16b, \t7\().16b ext \x0\().16b, \x0\().16b, \x0\().16b, #8 eor \t2\().16b, \t2\().16b, \x1\().16b eor \t0\().16b, \t0\().16b, \x7\().16b eor \t1\().16b, \t1\().16b, \x7\().16b ext \x1\().16b, \x1\().16b, \x1\().16b, #8 eor \t5\().16b, \t5\().16b, \x4\().16b eor \x0\().16b, \x0\().16b, \t0\().16b eor \t6\().16b, \t6\().16b, \x5\().16b eor \x1\().16b, \x1\().16b, \t1\().16b ext \t0\().16b, \x4\().16b, \x4\().16b, #8 eor \t4\().16b, \t4\().16b, \x3\().16b ext \t1\().16b, \x5\().16b, \x5\().16b, #8 eor \t7\().16b, \t7\().16b, \x6\().16b ext \x4\().16b, \x3\().16b, \x3\().16b, #8 eor \t3\().16b, \t3\().16b, \x2\().16b ext \x5\().16b, \x7\().16b, \x7\().16b, #8 eor \t4\().16b, \t4\().16b, \x7\().16b ext \x3\().16b, \x6\().16b, \x6\().16b, #8 eor \t3\().16b, \t3\().16b, \x7\().16b ext \x6\().16b, \x2\().16b, \x2\().16b, #8 eor \x7\().16b, \t1\().16b, \t5\().16b .ifb \inv eor \x2\().16b, \t0\().16b, \t4\().16b eor \x4\().16b, \x4\().16b, \t3\().16b eor \x5\().16b, \x5\().16b, \t7\().16b eor \x3\().16b, \x3\().16b, \t6\().16b eor \x6\().16b, \x6\().16b, \t2\().16b .else eor \t3\().16b, \t3\().16b, \x4\().16b eor \x5\().16b, \x5\().16b, \t7\().16b eor \x2\().16b, \x3\().16b, \t6\().16b eor \x3\().16b, \t0\().16b, \t4\().16b eor \x4\().16b, \x6\().16b, \t2\().16b mov \x6\().16b, \t3\().16b .endif .endm .macro inv_mix_cols, x0, x1, x2, x3, x4, x5, x6, x7, \ t0, t1, t2, t3, t4, t5, t6, t7 ext \t0\().16b, \x0\().16b, \x0\().16b, #8 ext \t6\().16b, \x6\().16b, \x6\().16b, #8 ext \t7\().16b, \x7\().16b, \x7\().16b, #8 eor \t0\().16b, \t0\().16b, \x0\().16b ext \t1\().16b, \x1\().16b, \x1\().16b, #8 eor \t6\().16b, \t6\().16b, \x6\().16b ext \t2\().16b, \x2\().16b, \x2\().16b, #8 eor \t7\().16b, \t7\().16b, \x7\().16b ext \t3\().16b, \x3\().16b, \x3\().16b, #8 eor \t1\().16b, \t1\().16b, \x1\().16b ext \t4\().16b, \x4\().16b, \x4\().16b, #8 eor \t2\().16b, \t2\().16b, \x2\().16b ext \t5\().16b, \x5\().16b, \x5\().16b, #8 eor \t3\().16b, \t3\().16b, \x3\().16b eor \t4\().16b, \t4\().16b, \x4\().16b eor \t5\().16b, \t5\().16b, \x5\().16b eor \x0\().16b, \x0\().16b, \t6\().16b eor \x1\().16b, \x1\().16b, \t6\().16b eor \x2\().16b, \x2\().16b, \t0\().16b eor \x4\().16b, \x4\().16b, \t2\().16b eor \x3\().16b, \x3\().16b, \t1\().16b eor \x1\().16b, \x1\().16b, \t7\().16b eor \x2\().16b, \x2\().16b, \t7\().16b eor \x4\().16b, \x4\().16b, \t6\().16b eor \x5\().16b, \x5\().16b, \t3\().16b eor \x3\().16b, \x3\().16b, \t6\().16b eor \x6\().16b, \x6\().16b, \t4\().16b eor \x4\().16b, \x4\().16b, \t7\().16b eor \x5\().16b, \x5\().16b, \t7\().16b eor \x7\().16b, \x7\().16b, \t5\().16b mix_cols \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \ \t0, \t1, \t2, \t3, \t4, \t5, \t6, \t7, 1 .endm .macro swapmove_2x, a0, b0, a1, b1, n, mask, t0, t1 ushr \t0\().2d, \b0\().2d, #\n ushr \t1\().2d, \b1\().2d, #\n eor \t0\().16b, \t0\().16b, \a0\().16b eor \t1\().16b, \t1\().16b, \a1\().16b and \t0\().16b, \t0\().16b, \mask\().16b and \t1\().16b, \t1\().16b, \mask\().16b eor \a0\().16b, \a0\().16b, \t0\().16b shl \t0\().2d, \t0\().2d, #\n eor \a1\().16b, \a1\().16b, \t1\().16b shl \t1\().2d, \t1\().2d, #\n eor \b0\().16b, \b0\().16b, \t0\().16b eor \b1\().16b, \b1\().16b, \t1\().16b .endm .macro bitslice, x7, x6, x5, x4, x3, x2, x1, x0, t0, t1, t2, t3 movi \t0\().16b, #0x55 movi \t1\().16b, #0x33 swapmove_2x \x0, \x1, \x2, \x3, 1, \t0, \t2, \t3 swapmove_2x \x4, \x5, \x6, \x7, 1, \t0, \t2, \t3 movi \t0\().16b, #0x0f swapmove_2x \x0, \x2, \x1, \x3, 2, \t1, \t2, \t3 swapmove_2x \x4, \x6, \x5, \x7, 2, \t1, \t2, \t3 swapmove_2x \x0, \x4, \x1, \x5, 4, \t0, \t2, \t3 swapmove_2x \x2, \x6, \x3, \x7, 4, \t0, \t2, \t3 .endm .align 6 M0: .octa 0x0004080c0105090d02060a0e03070b0f M0SR: .octa 0x0004080c05090d010a0e02060f03070b SR: .octa 0x0f0e0d0c0a09080b0504070600030201 SRM0: .octa 0x01060b0c0207080d0304090e00050a0f M0ISR: .octa 0x0004080c0d0105090a0e0206070b0f03 ISR: .octa 0x0f0e0d0c080b0a090504070602010003 ISRM0: .octa 0x0306090c00070a0d01040b0e0205080f /* * void aesbs_convert_key(u8 out[], u32 const rk[], int rounds) */ SYM_FUNC_START(aesbs_convert_key) ld1 {v7.4s}, [x1], #16 // load round 0 key ld1 {v17.4s}, [x1], #16 // load round 1 key movi v8.16b, #0x01 // bit masks movi v9.16b, #0x02 movi v10.16b, #0x04 movi v11.16b, #0x08 movi v12.16b, #0x10 movi v13.16b, #0x20 movi v14.16b, #0x40 movi v15.16b, #0x80 ldr q16, M0 sub x2, x2, #1 str q7, [x0], #16 // save round 0 key .Lkey_loop: tbl v7.16b ,{v17.16b}, v16.16b ld1 {v17.4s}, [x1], #16 // load next round key cmtst v0.16b, v7.16b, v8.16b cmtst v1.16b, v7.16b, v9.16b cmtst v2.16b, v7.16b, v10.16b cmtst v3.16b, v7.16b, v11.16b cmtst v4.16b, v7.16b, v12.16b cmtst v5.16b, v7.16b, v13.16b cmtst v6.16b, v7.16b, v14.16b cmtst v7.16b, v7.16b, v15.16b not v0.16b, v0.16b not v1.16b, v1.16b not v5.16b, v5.16b not v6.16b, v6.16b subs x2, x2, #1 stp q0, q1, [x0], #128 stp q2, q3, [x0, #-96] stp q4, q5, [x0, #-64] stp q6, q7, [x0, #-32] b.ne .Lkey_loop movi v7.16b, #0x63 // compose .L63 eor v17.16b, v17.16b, v7.16b str q17, [x0] ret SYM_FUNC_END(aesbs_convert_key) .align 4 SYM_FUNC_START_LOCAL(aesbs_encrypt8) ldr q9, [bskey], #16 // round 0 key ldr q8, M0SR ldr q24, SR eor v10.16b, v0.16b, v9.16b // xor with round0 key eor v11.16b, v1.16b, v9.16b tbl v0.16b, {v10.16b}, v8.16b eor v12.16b, v2.16b, v9.16b tbl v1.16b, {v11.16b}, v8.16b eor v13.16b, v3.16b, v9.16b tbl v2.16b, {v12.16b}, v8.16b eor v14.16b, v4.16b, v9.16b tbl v3.16b, {v13.16b}, v8.16b eor v15.16b, v5.16b, v9.16b tbl v4.16b, {v14.16b}, v8.16b eor v10.16b, v6.16b, v9.16b tbl v5.16b, {v15.16b}, v8.16b eor v11.16b, v7.16b, v9.16b tbl v6.16b, {v10.16b}, v8.16b tbl v7.16b, {v11.16b}, v8.16b bitslice v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11 sub rounds, rounds, #1 b .Lenc_sbox .Lenc_loop: shift_rows v0, v1, v2, v3, v4, v5, v6, v7, v24 .Lenc_sbox: sbox v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, \ v13, v14, v15 subs rounds, rounds, #1 b.cc .Lenc_done enc_next_rk mix_cols v0, v1, v4, v6, v3, v7, v2, v5, v8, v9, v10, v11, v12, \ v13, v14, v15 add_round_key v0, v1, v2, v3, v4, v5, v6, v7 b.ne .Lenc_loop ldr q24, SRM0 b .Lenc_loop .Lenc_done: ldr q12, [bskey] // last round key bitslice v0, v1, v4, v6, v3, v7, v2, v5, v8, v9, v10, v11 eor v0.16b, v0.16b, v12.16b eor v1.16b, v1.16b, v12.16b eor v4.16b, v4.16b, v12.16b eor v6.16b, v6.16b, v12.16b eor v3.16b, v3.16b, v12.16b eor v7.16b, v7.16b, v12.16b eor v2.16b, v2.16b, v12.16b eor v5.16b, v5.16b, v12.16b ret SYM_FUNC_END(aesbs_encrypt8) .align 4 SYM_FUNC_START_LOCAL(aesbs_decrypt8) lsl x9, rounds, #7 add bskey, bskey, x9 ldr q9, [bskey, #-112]! // round 0 key ldr q8, M0ISR ldr q24, ISR eor v10.16b, v0.16b, v9.16b // xor with round0 key eor v11.16b, v1.16b, v9.16b tbl v0.16b, {v10.16b}, v8.16b eor v12.16b, v2.16b, v9.16b tbl v1.16b, {v11.16b}, v8.16b eor v13.16b, v3.16b, v9.16b tbl v2.16b, {v12.16b}, v8.16b eor v14.16b, v4.16b, v9.16b tbl v3.16b, {v13.16b}, v8.16b eor v15.16b, v5.16b, v9.16b tbl v4.16b, {v14.16b}, v8.16b eor v10.16b, v6.16b, v9.16b tbl v5.16b, {v15.16b}, v8.16b eor v11.16b, v7.16b, v9.16b tbl v6.16b, {v10.16b}, v8.16b tbl v7.16b, {v11.16b}, v8.16b bitslice v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11 sub rounds, rounds, #1 b .Ldec_sbox .Ldec_loop: shift_rows v0, v1, v2, v3, v4, v5, v6, v7, v24 .Ldec_sbox: inv_sbox v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, \ v13, v14, v15 subs rounds, rounds, #1 b.cc .Ldec_done dec_next_rk add_round_key v0, v1, v6, v4, v2, v7, v3, v5 inv_mix_cols v0, v1, v6, v4, v2, v7, v3, v5, v8, v9, v10, v11, v12, \ v13, v14, v15 b.ne .Ldec_loop ldr q24, ISRM0 b .Ldec_loop .Ldec_done: ldr q12, [bskey, #-16] // last round key bitslice v0, v1, v6, v4, v2, v7, v3, v5, v8, v9, v10, v11 eor v0.16b, v0.16b, v12.16b eor v1.16b, v1.16b, v12.16b eor v6.16b, v6.16b, v12.16b eor v4.16b, v4.16b, v12.16b eor v2.16b, v2.16b, v12.16b eor v7.16b, v7.16b, v12.16b eor v3.16b, v3.16b, v12.16b eor v5.16b, v5.16b, v12.16b ret SYM_FUNC_END(aesbs_decrypt8) /* * aesbs_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks) * aesbs_ecb_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks) */ .macro __ecb_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7 frame_push 5 mov x19, x0 mov x20, x1 mov x21, x2 mov x22, x3 mov x23, x4 99: mov x5, #1 lsl x5, x5, x23 subs w23, w23, #8 csel x23, x23, xzr, pl csel x5, x5, xzr, mi ld1 {v0.16b}, [x20], #16 tbnz x5, #1, 0f ld1 {v1.16b}, [x20], #16 tbnz x5, #2, 0f ld1 {v2.16b}, [x20], #16 tbnz x5, #3, 0f ld1 {v3.16b}, [x20], #16 tbnz x5, #4, 0f ld1 {v4.16b}, [x20], #16 tbnz x5, #5, 0f ld1 {v5.16b}, [x20], #16 tbnz x5, #6, 0f ld1 {v6.16b}, [x20], #16 tbnz x5, #7, 0f ld1 {v7.16b}, [x20], #16 0: mov bskey, x21 mov rounds, x22 bl \do8 st1 {\o0\().16b}, [x19], #16 tbnz x5, #1, 1f st1 {\o1\().16b}, [x19], #16 tbnz x5, #2, 1f st1 {\o2\().16b}, [x19], #16 tbnz x5, #3, 1f st1 {\o3\().16b}, [x19], #16 tbnz x5, #4, 1f st1 {\o4\().16b}, [x19], #16 tbnz x5, #5, 1f st1 {\o5\().16b}, [x19], #16 tbnz x5, #6, 1f st1 {\o6\().16b}, [x19], #16 tbnz x5, #7, 1f st1 {\o7\().16b}, [x19], #16 cbz x23, 1f b 99b 1: frame_pop ret .endm .align 4 SYM_TYPED_FUNC_START(aesbs_ecb_encrypt) __ecb_crypt aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5 SYM_FUNC_END(aesbs_ecb_encrypt) .align 4 SYM_TYPED_FUNC_START(aesbs_ecb_decrypt) __ecb_crypt aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5 SYM_FUNC_END(aesbs_ecb_decrypt) /* * aesbs_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks, u8 iv[]) */ .align 4 SYM_FUNC_START(aesbs_cbc_decrypt) frame_push 6 mov x19, x0 mov x20, x1 mov x21, x2 mov x22, x3 mov x23, x4 mov x24, x5 99: mov x6, #1 lsl x6, x6, x23 subs w23, w23, #8 csel x23, x23, xzr, pl csel x6, x6, xzr, mi ld1 {v0.16b}, [x20], #16 mov v25.16b, v0.16b tbnz x6, #1, 0f ld1 {v1.16b}, [x20], #16 mov v26.16b, v1.16b tbnz x6, #2, 0f ld1 {v2.16b}, [x20], #16 mov v27.16b, v2.16b tbnz x6, #3, 0f ld1 {v3.16b}, [x20], #16 mov v28.16b, v3.16b tbnz x6, #4, 0f ld1 {v4.16b}, [x20], #16 mov v29.16b, v4.16b tbnz x6, #5, 0f ld1 {v5.16b}, [x20], #16 mov v30.16b, v5.16b tbnz x6, #6, 0f ld1 {v6.16b}, [x20], #16 mov v31.16b, v6.16b tbnz x6, #7, 0f ld1 {v7.16b}, [x20] 0: mov bskey, x21 mov rounds, x22 bl aesbs_decrypt8 ld1 {v24.16b}, [x24] // load IV eor v1.16b, v1.16b, v25.16b eor v6.16b, v6.16b, v26.16b eor v4.16b, v4.16b, v27.16b eor v2.16b, v2.16b, v28.16b eor v7.16b, v7.16b, v29.16b eor v0.16b, v0.16b, v24.16b eor v3.16b, v3.16b, v30.16b eor v5.16b, v5.16b, v31.16b st1 {v0.16b}, [x19], #16 mov v24.16b, v25.16b tbnz x6, #1, 1f st1 {v1.16b}, [x19], #16 mov v24.16b, v26.16b tbnz x6, #2, 1f st1 {v6.16b}, [x19], #16 mov v24.16b, v27.16b tbnz x6, #3, 1f st1 {v4.16b}, [x19], #16 mov v24.16b, v28.16b tbnz x6, #4, 1f st1 {v2.16b}, [x19], #16 mov v24.16b, v29.16b tbnz x6, #5, 1f st1 {v7.16b}, [x19], #16 mov v24.16b, v30.16b tbnz x6, #6, 1f st1 {v3.16b}, [x19], #16 mov v24.16b, v31.16b tbnz x6, #7, 1f ld1 {v24.16b}, [x20], #16 st1 {v5.16b}, [x19], #16 1: st1 {v24.16b}, [x24] // store IV cbz x23, 2f b 99b 2: frame_pop ret SYM_FUNC_END(aesbs_cbc_decrypt) .macro next_tweak, out, in, const, tmp sshr \tmp\().2d, \in\().2d, #63 and \tmp\().16b, \tmp\().16b, \const\().16b add \out\().2d, \in\().2d, \in\().2d ext \tmp\().16b, \tmp\().16b, \tmp\().16b, #8 eor \out\().16b, \out\().16b, \tmp\().16b .endm /* * aesbs_xts_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks, u8 iv[]) * aesbs_xts_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks, u8 iv[]) */ SYM_FUNC_START_LOCAL(__xts_crypt8) movi v18.2s, #0x1 movi v19.2s, #0x87 uzp1 v18.4s, v18.4s, v19.4s ld1 {v0.16b-v3.16b}, [x1], #64 ld1 {v4.16b-v7.16b}, [x1], #64 next_tweak v26, v25, v18, v19 next_tweak v27, v26, v18, v19 next_tweak v28, v27, v18, v19 next_tweak v29, v28, v18, v19 next_tweak v30, v29, v18, v19 next_tweak v31, v30, v18, v19 next_tweak v16, v31, v18, v19 next_tweak v17, v16, v18, v19 eor v0.16b, v0.16b, v25.16b eor v1.16b, v1.16b, v26.16b eor v2.16b, v2.16b, v27.16b eor v3.16b, v3.16b, v28.16b eor v4.16b, v4.16b, v29.16b eor v5.16b, v5.16b, v30.16b eor v6.16b, v6.16b, v31.16b eor v7.16b, v7.16b, v16.16b stp q16, q17, [x6] mov bskey, x2 mov rounds, x3 br x16 SYM_FUNC_END(__xts_crypt8) .macro __xts_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7 frame_push 0, 32 add x6, sp, #.Lframe_local_offset ld1 {v25.16b}, [x5] 0: adr x16, \do8 bl __xts_crypt8 eor v16.16b, \o0\().16b, v25.16b eor v17.16b, \o1\().16b, v26.16b eor v18.16b, \o2\().16b, v27.16b eor v19.16b, \o3\().16b, v28.16b ldp q24, q25, [x6] eor v20.16b, \o4\().16b, v29.16b eor v21.16b, \o5\().16b, v30.16b eor v22.16b, \o6\().16b, v31.16b eor v23.16b, \o7\().16b, v24.16b st1 {v16.16b-v19.16b}, [x0], #64 st1 {v20.16b-v23.16b}, [x0], #64 subs x4, x4, #8 b.gt 0b st1 {v25.16b}, [x5] frame_pop ret .endm SYM_TYPED_FUNC_START(aesbs_xts_encrypt) __xts_crypt aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5 SYM_FUNC_END(aesbs_xts_encrypt) SYM_TYPED_FUNC_START(aesbs_xts_decrypt) __xts_crypt aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5 SYM_FUNC_END(aesbs_xts_decrypt) .macro next_ctr, v mov \v\().d[1], x8 adds x8, x8, #1 mov \v\().d[0], x7 adc x7, x7, xzr rev64 \v\().16b, \v\().16b .endm /* * aesbs_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[], * int rounds, int blocks, u8 iv[]) */ SYM_FUNC_START(aesbs_ctr_encrypt) frame_push 0 ldp x7, x8, [x5] ld1 {v0.16b}, [x5] CPU_LE( rev x7, x7 ) CPU_LE( rev x8, x8 ) adds x8, x8, #1 adc x7, x7, xzr 0: next_ctr v1 next_ctr v2 next_ctr v3 next_ctr v4 next_ctr v5 next_ctr v6 next_ctr v7 mov bskey, x2 mov rounds, x3 bl aesbs_encrypt8 ld1 { v8.16b-v11.16b}, [x1], #64 ld1 {v12.16b-v15.16b}, [x1], #64 eor v8.16b, v0.16b, v8.16b eor v9.16b, v1.16b, v9.16b eor v10.16b, v4.16b, v10.16b eor v11.16b, v6.16b, v11.16b eor v12.16b, v3.16b, v12.16b eor v13.16b, v7.16b, v13.16b eor v14.16b, v2.16b, v14.16b eor v15.16b, v5.16b, v15.16b st1 { v8.16b-v11.16b}, [x0], #64 st1 {v12.16b-v15.16b}, [x0], #64 next_ctr v0 subs x4, x4, #8 b.gt 0b st1 {v0.16b}, [x5] frame_pop ret SYM_FUNC_END(aesbs_ctr_encrypt) |