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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 | /* SPDX-License-Identifier: GPL-2.0-only */ /* * AES-NI + SSE2 implementation of AEGIS-128 * * Copyright (c) 2017-2018 Ondrej Mosnacek <omosnacek@gmail.com> * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved. */ #include <linux/linkage.h> #include <linux/cfi_types.h> #include <asm/frame.h> #define STATE0 %xmm0 #define STATE1 %xmm1 #define STATE2 %xmm2 #define STATE3 %xmm3 #define STATE4 %xmm4 #define KEY %xmm5 #define MSG %xmm5 #define T0 %xmm6 #define T1 %xmm7 #define STATEP %rdi #define LEN %rsi #define SRC %rdx #define DST %rcx .section .rodata.cst16.aegis128_const, "aM", @progbits, 32 .align 16 .Laegis128_const_0: .byte 0x00, 0x01, 0x01, 0x02, 0x03, 0x05, 0x08, 0x0d .byte 0x15, 0x22, 0x37, 0x59, 0x90, 0xe9, 0x79, 0x62 .Laegis128_const_1: .byte 0xdb, 0x3d, 0x18, 0x55, 0x6d, 0xc2, 0x2f, 0xf1 .byte 0x20, 0x11, 0x31, 0x42, 0x73, 0xb5, 0x28, 0xdd .section .rodata.cst16.aegis128_counter, "aM", @progbits, 16 .align 16 .Laegis128_counter: .byte 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 .byte 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f .text /* * aegis128_update * input: * STATE[0-4] - input state * output: * STATE[0-4] - output state (shifted positions) * changed: * T0 */ .macro aegis128_update movdqa STATE4, T0 aesenc STATE0, STATE4 aesenc STATE1, STATE0 aesenc STATE2, STATE1 aesenc STATE3, STATE2 aesenc T0, STATE3 .endm /* * __load_partial: internal ABI * input: * LEN - bytes * SRC - src * output: * MSG - message block * changed: * T0 * %r8 * %r9 */ SYM_FUNC_START_LOCAL(__load_partial) xor %r9d, %r9d pxor MSG, MSG mov LEN, %r8 and $0x1, %r8 jz .Lld_partial_1 mov LEN, %r8 and $0x1E, %r8 add SRC, %r8 mov (%r8), %r9b .Lld_partial_1: mov LEN, %r8 and $0x2, %r8 jz .Lld_partial_2 mov LEN, %r8 and $0x1C, %r8 add SRC, %r8 shl $0x10, %r9 mov (%r8), %r9w .Lld_partial_2: mov LEN, %r8 and $0x4, %r8 jz .Lld_partial_4 mov LEN, %r8 and $0x18, %r8 add SRC, %r8 shl $32, %r9 mov (%r8), %r8d xor %r8, %r9 .Lld_partial_4: movq %r9, MSG mov LEN, %r8 and $0x8, %r8 jz .Lld_partial_8 mov LEN, %r8 and $0x10, %r8 add SRC, %r8 pslldq $8, MSG movq (%r8), T0 pxor T0, MSG .Lld_partial_8: RET SYM_FUNC_END(__load_partial) /* * __store_partial: internal ABI * input: * LEN - bytes * DST - dst * output: * T0 - message block * changed: * %r8 * %r9 * %r10 */ SYM_FUNC_START_LOCAL(__store_partial) mov LEN, %r8 mov DST, %r9 movq T0, %r10 cmp $8, %r8 jl .Lst_partial_8 mov %r10, (%r9) psrldq $8, T0 movq T0, %r10 sub $8, %r8 add $8, %r9 .Lst_partial_8: cmp $4, %r8 jl .Lst_partial_4 mov %r10d, (%r9) shr $32, %r10 sub $4, %r8 add $4, %r9 .Lst_partial_4: cmp $2, %r8 jl .Lst_partial_2 mov %r10w, (%r9) shr $0x10, %r10 sub $2, %r8 add $2, %r9 .Lst_partial_2: cmp $1, %r8 jl .Lst_partial_1 mov %r10b, (%r9) .Lst_partial_1: RET SYM_FUNC_END(__store_partial) /* * void crypto_aegis128_aesni_init(void *state, const void *key, const void *iv); */ SYM_FUNC_START(crypto_aegis128_aesni_init) FRAME_BEGIN /* load IV: */ movdqu (%rdx), T1 /* load key: */ movdqa (%rsi), KEY pxor KEY, T1 movdqa T1, STATE0 movdqa KEY, STATE3 movdqa KEY, STATE4 /* load the constants: */ movdqa .Laegis128_const_0(%rip), STATE2 movdqa .Laegis128_const_1(%rip), STATE1 pxor STATE2, STATE3 pxor STATE1, STATE4 /* update 10 times with KEY / KEY xor IV: */ aegis128_update; pxor KEY, STATE4 aegis128_update; pxor T1, STATE3 aegis128_update; pxor KEY, STATE2 aegis128_update; pxor T1, STATE1 aegis128_update; pxor KEY, STATE0 aegis128_update; pxor T1, STATE4 aegis128_update; pxor KEY, STATE3 aegis128_update; pxor T1, STATE2 aegis128_update; pxor KEY, STATE1 aegis128_update; pxor T1, STATE0 /* store the state: */ movdqu STATE0, 0x00(STATEP) movdqu STATE1, 0x10(STATEP) movdqu STATE2, 0x20(STATEP) movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_init) /* * void crypto_aegis128_aesni_ad(void *state, unsigned int length, * const void *data); */ SYM_FUNC_START(crypto_aegis128_aesni_ad) FRAME_BEGIN cmp $0x10, LEN jb .Lad_out /* load the state: */ movdqu 0x00(STATEP), STATE0 movdqu 0x10(STATEP), STATE1 movdqu 0x20(STATEP), STATE2 movdqu 0x30(STATEP), STATE3 movdqu 0x40(STATEP), STATE4 mov SRC, %r8 and $0xF, %r8 jnz .Lad_u_loop .align 8 .Lad_a_loop: movdqa 0x00(SRC), MSG aegis128_update pxor MSG, STATE4 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_1 movdqa 0x10(SRC), MSG aegis128_update pxor MSG, STATE3 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_2 movdqa 0x20(SRC), MSG aegis128_update pxor MSG, STATE2 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_3 movdqa 0x30(SRC), MSG aegis128_update pxor MSG, STATE1 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_4 movdqa 0x40(SRC), MSG aegis128_update pxor MSG, STATE0 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_0 add $0x50, SRC jmp .Lad_a_loop .align 8 .Lad_u_loop: movdqu 0x00(SRC), MSG aegis128_update pxor MSG, STATE4 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_1 movdqu 0x10(SRC), MSG aegis128_update pxor MSG, STATE3 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_2 movdqu 0x20(SRC), MSG aegis128_update pxor MSG, STATE2 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_3 movdqu 0x30(SRC), MSG aegis128_update pxor MSG, STATE1 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_4 movdqu 0x40(SRC), MSG aegis128_update pxor MSG, STATE0 sub $0x10, LEN cmp $0x10, LEN jl .Lad_out_0 add $0x50, SRC jmp .Lad_u_loop /* store the state: */ .Lad_out_0: movdqu STATE0, 0x00(STATEP) movdqu STATE1, 0x10(STATEP) movdqu STATE2, 0x20(STATEP) movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END RET .Lad_out_1: movdqu STATE4, 0x00(STATEP) movdqu STATE0, 0x10(STATEP) movdqu STATE1, 0x20(STATEP) movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END RET .Lad_out_2: movdqu STATE3, 0x00(STATEP) movdqu STATE4, 0x10(STATEP) movdqu STATE0, 0x20(STATEP) movdqu STATE1, 0x30(STATEP) movdqu STATE2, 0x40(STATEP) FRAME_END RET .Lad_out_3: movdqu STATE2, 0x00(STATEP) movdqu STATE3, 0x10(STATEP) movdqu STATE4, 0x20(STATEP) movdqu STATE0, 0x30(STATEP) movdqu STATE1, 0x40(STATEP) FRAME_END RET .Lad_out_4: movdqu STATE1, 0x00(STATEP) movdqu STATE2, 0x10(STATEP) movdqu STATE3, 0x20(STATEP) movdqu STATE4, 0x30(STATEP) movdqu STATE0, 0x40(STATEP) FRAME_END RET .Lad_out: FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_ad) .macro encrypt_block a s0 s1 s2 s3 s4 i movdq\a (\i * 0x10)(SRC), MSG movdqa MSG, T0 pxor \s1, T0 pxor \s4, T0 movdqa \s2, T1 pand \s3, T1 pxor T1, T0 movdq\a T0, (\i * 0x10)(DST) aegis128_update pxor MSG, \s4 sub $0x10, LEN cmp $0x10, LEN jl .Lenc_out_\i .endm /* * void crypto_aegis128_aesni_enc(void *state, unsigned int length, * const void *src, void *dst); */ SYM_TYPED_FUNC_START(crypto_aegis128_aesni_enc) FRAME_BEGIN cmp $0x10, LEN jb .Lenc_out /* load the state: */ movdqu 0x00(STATEP), STATE0 movdqu 0x10(STATEP), STATE1 movdqu 0x20(STATEP), STATE2 movdqu 0x30(STATEP), STATE3 movdqu 0x40(STATEP), STATE4 mov SRC, %r8 or DST, %r8 and $0xF, %r8 jnz .Lenc_u_loop .align 8 .Lenc_a_loop: encrypt_block a STATE0 STATE1 STATE2 STATE3 STATE4 0 encrypt_block a STATE4 STATE0 STATE1 STATE2 STATE3 1 encrypt_block a STATE3 STATE4 STATE0 STATE1 STATE2 2 encrypt_block a STATE2 STATE3 STATE4 STATE0 STATE1 3 encrypt_block a STATE1 STATE2 STATE3 STATE4 STATE0 4 add $0x50, SRC add $0x50, DST jmp .Lenc_a_loop .align 8 .Lenc_u_loop: encrypt_block u STATE0 STATE1 STATE2 STATE3 STATE4 0 encrypt_block u STATE4 STATE0 STATE1 STATE2 STATE3 1 encrypt_block u STATE3 STATE4 STATE0 STATE1 STATE2 2 encrypt_block u STATE2 STATE3 STATE4 STATE0 STATE1 3 encrypt_block u STATE1 STATE2 STATE3 STATE4 STATE0 4 add $0x50, SRC add $0x50, DST jmp .Lenc_u_loop /* store the state: */ .Lenc_out_0: movdqu STATE4, 0x00(STATEP) movdqu STATE0, 0x10(STATEP) movdqu STATE1, 0x20(STATEP) movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END RET .Lenc_out_1: movdqu STATE3, 0x00(STATEP) movdqu STATE4, 0x10(STATEP) movdqu STATE0, 0x20(STATEP) movdqu STATE1, 0x30(STATEP) movdqu STATE2, 0x40(STATEP) FRAME_END RET .Lenc_out_2: movdqu STATE2, 0x00(STATEP) movdqu STATE3, 0x10(STATEP) movdqu STATE4, 0x20(STATEP) movdqu STATE0, 0x30(STATEP) movdqu STATE1, 0x40(STATEP) FRAME_END RET .Lenc_out_3: movdqu STATE1, 0x00(STATEP) movdqu STATE2, 0x10(STATEP) movdqu STATE3, 0x20(STATEP) movdqu STATE4, 0x30(STATEP) movdqu STATE0, 0x40(STATEP) FRAME_END RET .Lenc_out_4: movdqu STATE0, 0x00(STATEP) movdqu STATE1, 0x10(STATEP) movdqu STATE2, 0x20(STATEP) movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END RET .Lenc_out: FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_enc) /* * void crypto_aegis128_aesni_enc_tail(void *state, unsigned int length, * const void *src, void *dst); */ SYM_TYPED_FUNC_START(crypto_aegis128_aesni_enc_tail) FRAME_BEGIN /* load the state: */ movdqu 0x00(STATEP), STATE0 movdqu 0x10(STATEP), STATE1 movdqu 0x20(STATEP), STATE2 movdqu 0x30(STATEP), STATE3 movdqu 0x40(STATEP), STATE4 /* encrypt message: */ call __load_partial movdqa MSG, T0 pxor STATE1, T0 pxor STATE4, T0 movdqa STATE2, T1 pand STATE3, T1 pxor T1, T0 call __store_partial aegis128_update pxor MSG, STATE4 /* store the state: */ movdqu STATE4, 0x00(STATEP) movdqu STATE0, 0x10(STATEP) movdqu STATE1, 0x20(STATEP) movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_enc_tail) .macro decrypt_block a s0 s1 s2 s3 s4 i movdq\a (\i * 0x10)(SRC), MSG pxor \s1, MSG pxor \s4, MSG movdqa \s2, T1 pand \s3, T1 pxor T1, MSG movdq\a MSG, (\i * 0x10)(DST) aegis128_update pxor MSG, \s4 sub $0x10, LEN cmp $0x10, LEN jl .Ldec_out_\i .endm /* * void crypto_aegis128_aesni_dec(void *state, unsigned int length, * const void *src, void *dst); */ SYM_TYPED_FUNC_START(crypto_aegis128_aesni_dec) FRAME_BEGIN cmp $0x10, LEN jb .Ldec_out /* load the state: */ movdqu 0x00(STATEP), STATE0 movdqu 0x10(STATEP), STATE1 movdqu 0x20(STATEP), STATE2 movdqu 0x30(STATEP), STATE3 movdqu 0x40(STATEP), STATE4 mov SRC, %r8 or DST, %r8 and $0xF, %r8 jnz .Ldec_u_loop .align 8 .Ldec_a_loop: decrypt_block a STATE0 STATE1 STATE2 STATE3 STATE4 0 decrypt_block a STATE4 STATE0 STATE1 STATE2 STATE3 1 decrypt_block a STATE3 STATE4 STATE0 STATE1 STATE2 2 decrypt_block a STATE2 STATE3 STATE4 STATE0 STATE1 3 decrypt_block a STATE1 STATE2 STATE3 STATE4 STATE0 4 add $0x50, SRC add $0x50, DST jmp .Ldec_a_loop .align 8 .Ldec_u_loop: decrypt_block u STATE0 STATE1 STATE2 STATE3 STATE4 0 decrypt_block u STATE4 STATE0 STATE1 STATE2 STATE3 1 decrypt_block u STATE3 STATE4 STATE0 STATE1 STATE2 2 decrypt_block u STATE2 STATE3 STATE4 STATE0 STATE1 3 decrypt_block u STATE1 STATE2 STATE3 STATE4 STATE0 4 add $0x50, SRC add $0x50, DST jmp .Ldec_u_loop /* store the state: */ .Ldec_out_0: movdqu STATE4, 0x00(STATEP) movdqu STATE0, 0x10(STATEP) movdqu STATE1, 0x20(STATEP) movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END RET .Ldec_out_1: movdqu STATE3, 0x00(STATEP) movdqu STATE4, 0x10(STATEP) movdqu STATE0, 0x20(STATEP) movdqu STATE1, 0x30(STATEP) movdqu STATE2, 0x40(STATEP) FRAME_END RET .Ldec_out_2: movdqu STATE2, 0x00(STATEP) movdqu STATE3, 0x10(STATEP) movdqu STATE4, 0x20(STATEP) movdqu STATE0, 0x30(STATEP) movdqu STATE1, 0x40(STATEP) FRAME_END RET .Ldec_out_3: movdqu STATE1, 0x00(STATEP) movdqu STATE2, 0x10(STATEP) movdqu STATE3, 0x20(STATEP) movdqu STATE4, 0x30(STATEP) movdqu STATE0, 0x40(STATEP) FRAME_END RET .Ldec_out_4: movdqu STATE0, 0x00(STATEP) movdqu STATE1, 0x10(STATEP) movdqu STATE2, 0x20(STATEP) movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END RET .Ldec_out: FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_dec) /* * void crypto_aegis128_aesni_dec_tail(void *state, unsigned int length, * const void *src, void *dst); */ SYM_TYPED_FUNC_START(crypto_aegis128_aesni_dec_tail) FRAME_BEGIN /* load the state: */ movdqu 0x00(STATEP), STATE0 movdqu 0x10(STATEP), STATE1 movdqu 0x20(STATEP), STATE2 movdqu 0x30(STATEP), STATE3 movdqu 0x40(STATEP), STATE4 /* decrypt message: */ call __load_partial pxor STATE1, MSG pxor STATE4, MSG movdqa STATE2, T1 pand STATE3, T1 pxor T1, MSG movdqa MSG, T0 call __store_partial /* mask with byte count: */ movq LEN, T0 punpcklbw T0, T0 punpcklbw T0, T0 punpcklbw T0, T0 punpcklbw T0, T0 movdqa .Laegis128_counter(%rip), T1 pcmpgtb T1, T0 pand T0, MSG aegis128_update pxor MSG, STATE4 /* store the state: */ movdqu STATE4, 0x00(STATEP) movdqu STATE0, 0x10(STATEP) movdqu STATE1, 0x20(STATEP) movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_dec_tail) /* * void crypto_aegis128_aesni_final(void *state, void *tag_xor, * u64 assoclen, u64 cryptlen); */ SYM_FUNC_START(crypto_aegis128_aesni_final) FRAME_BEGIN /* load the state: */ movdqu 0x00(STATEP), STATE0 movdqu 0x10(STATEP), STATE1 movdqu 0x20(STATEP), STATE2 movdqu 0x30(STATEP), STATE3 movdqu 0x40(STATEP), STATE4 /* prepare length block: */ movq %rdx, MSG movq %rcx, T0 pslldq $8, T0 pxor T0, MSG psllq $3, MSG /* multiply by 8 (to get bit count) */ pxor STATE3, MSG /* update state: */ aegis128_update; pxor MSG, STATE4 aegis128_update; pxor MSG, STATE3 aegis128_update; pxor MSG, STATE2 aegis128_update; pxor MSG, STATE1 aegis128_update; pxor MSG, STATE0 aegis128_update; pxor MSG, STATE4 aegis128_update; pxor MSG, STATE3 /* xor tag: */ movdqu (%rsi), MSG pxor STATE0, MSG pxor STATE1, MSG pxor STATE2, MSG pxor STATE3, MSG pxor STATE4, MSG movdqu MSG, (%rsi) FRAME_END RET SYM_FUNC_END(crypto_aegis128_aesni_final) |