#! /usr/bin/env perl # Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. # # Licensed under the OpenSSL license (the "License"). You may not use # this file except in compliance with the License. You can obtain a copy # in the file LICENSE in the source distribution or at # https://www.openssl.org/source/license.html ###################################################################### ## Constant-time SSSE3 AES core implementation. ## version 0.1 ## ## By Mike Hamburg (Stanford University), 2009 ## Public domain. ## ## For details see http://shiftleft.org/papers/vector_aes/ and ## http://crypto.stanford.edu/vpaes/. ## ###################################################################### # ARMv8 NEON adaptation by <appro@openssl.org> # # Reason for undertaken effort is that there is at least one popular # SoC based on Cortex-A53 that doesn't have crypto extensions. # # CBC enc ECB enc/dec(*) [bit-sliced enc/dec] # Cortex-A53 21.5 18.1/20.6 [17.5/19.8 ] # Cortex-A57 36.0(**) 20.4/24.9(**) [14.4/16.6 ] # X-Gene 45.9(**) 45.8/57.7(**) [33.1/37.6(**) ] # Denver(***) 16.6(**) 15.1/17.8(**) [8.80/9.93 ] # Apple A7(***) 22.7(**) 10.9/14.3 [8.45/10.0 ] # Mongoose(***) 26.3(**) 21.0/25.0(**) [13.3/16.8 ] # # (*) ECB denotes approximate result for parallelizable modes # such as CBC decrypt, CTR, etc.; # (**) these results are worse than scalar compiler-generated # code, but it's constant-time and therefore preferred; # (***) presented for reference/comparison purposes; $flavour = shift; while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {} $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or ( $xlate="${dir}../../../perlasm/arm-xlate.pl" and -f $xlate) or die "can't locate arm-xlate.pl"; open OUT,"| \"$^X\" $xlate $flavour $output"; *STDOUT=*OUT; $code.=<<___; .section .rodata .type _vpaes_consts,%object .align 7 // totally strategic alignment _vpaes_consts: .Lk_mc_forward: // mc_forward .quad 0x0407060500030201, 0x0C0F0E0D080B0A09 .quad 0x080B0A0904070605, 0x000302010C0F0E0D .quad 0x0C0F0E0D080B0A09, 0x0407060500030201 .quad 0x000302010C0F0E0D, 0x080B0A0904070605 .Lk_mc_backward:// mc_backward .quad 0x0605040702010003, 0x0E0D0C0F0A09080B .quad 0x020100030E0D0C0F, 0x0A09080B06050407 .quad 0x0E0D0C0F0A09080B, 0x0605040702010003 .quad 0x0A09080B06050407, 0x020100030E0D0C0F .Lk_sr: // sr .quad 0x0706050403020100, 0x0F0E0D0C0B0A0908 .quad 0x030E09040F0A0500, 0x0B06010C07020D08 .quad 0x0F060D040B020900, 0x070E050C030A0108 .quad 0x0B0E0104070A0D00, 0x0306090C0F020508 // // "Hot" constants // .Lk_inv: // inv, inva .quad 0x0E05060F0D080180, 0x040703090A0B0C02 .quad 0x01040A060F0B0780, 0x030D0E0C02050809 .Lk_ipt: // input transform (lo, hi) .quad 0xC2B2E8985A2A7000, 0xCABAE09052227808 .quad 0x4C01307D317C4D00, 0xCD80B1FCB0FDCC81 .Lk_sbo: // sbou, sbot .quad 0xD0D26D176FBDC700, 0x15AABF7AC502A878 .quad 0xCFE474A55FBB6A00, 0x8E1E90D1412B35FA .Lk_sb1: // sb1u, sb1t .quad 0x3618D415FAE22300, 0x3BF7CCC10D2ED9EF .quad 0xB19BE18FCB503E00, 0xA5DF7A6E142AF544 .Lk_sb2: // sb2u, sb2t .quad 0x69EB88400AE12900, 0xC2A163C8AB82234A .quad 0xE27A93C60B712400, 0x5EB7E955BC982FCD // // Decryption stuff // .Lk_dipt: // decryption input transform .quad 0x0F505B040B545F00, 0x154A411E114E451A .quad 0x86E383E660056500, 0x12771772F491F194 .Lk_dsbo: // decryption sbox final output .quad 0x1387EA537EF94000, 0xC7AA6DB9D4943E2D .quad 0x12D7560F93441D00, 0xCA4B8159D8C58E9C .Lk_dsb9: // decryption sbox output *9*u, *9*t .quad 0x851C03539A86D600, 0xCAD51F504F994CC9 .quad 0xC03B1789ECD74900, 0x725E2C9EB2FBA565 .Lk_dsbd: // decryption sbox output *D*u, *D*t .quad 0x7D57CCDFE6B1A200, 0xF56E9B13882A4439 .quad 0x3CE2FAF724C6CB00, 0x2931180D15DEEFD3 .Lk_dsbb: // decryption sbox output *B*u, *B*t .quad 0xD022649296B44200, 0x602646F6B0F2D404 .quad 0xC19498A6CD596700, 0xF3FF0C3E3255AA6B .Lk_dsbe: // decryption sbox output *E*u, *E*t .quad 0x46F2929626D4D000, 0x2242600464B4F6B0 .quad 0x0C55A6CDFFAAC100, 0x9467F36B98593E32 // // Key schedule constants // .Lk_dksd: // decryption key schedule: invskew x*D .quad 0xFEB91A5DA3E44700, 0x0740E3A45A1DBEF9 .quad 0x41C277F4B5368300, 0x5FDC69EAAB289D1E .Lk_dksb: // decryption key schedule: invskew x*B .quad 0x9A4FCA1F8550D500, 0x03D653861CC94C99 .quad 0x115BEDA7B6FC4A00, 0xD993256F7E3482C8 .Lk_dkse: // decryption key schedule: invskew x*E + 0x63 .quad 0xD5031CCA1FC9D600, 0x53859A4C994F5086 .quad 0xA23196054FDC7BE8, 0xCD5EF96A20B31487 .Lk_dks9: // decryption key schedule: invskew x*9 .quad 0xB6116FC87ED9A700, 0x4AED933482255BFC .quad 0x4576516227143300, 0x8BB89FACE9DAFDCE .Lk_rcon: // rcon .quad 0x1F8391B9AF9DEEB6, 0x702A98084D7C7D81 .Lk_opt: // output transform .quad 0xFF9F4929D6B66000, 0xF7974121DEBE6808 .quad 0x01EDBD5150BCEC00, 0xE10D5DB1B05C0CE0 .Lk_deskew: // deskew tables: inverts the sbox's "skew" .quad 0x07E4A34047A4E300, 0x1DFEB95A5DBEF91A .quad 0x5F36B5DC83EA6900, 0x2841C2ABF49D1E77 .asciz "Vector Permutation AES for ARMv8, Mike Hamburg (Stanford University)" .size _vpaes_consts,.-_vpaes_consts .align 6 .text ___ { my ($inp,$out,$key) = map("x$_",(0..2)); my ($invlo,$invhi,$iptlo,$ipthi,$sbou,$sbot) = map("v$_.16b",(18..23)); my ($sb1u,$sb1t,$sb2u,$sb2t) = map("v$_.16b",(24..27)); my ($sb9u,$sb9t,$sbdu,$sbdt,$sbbu,$sbbt,$sbeu,$sbet)=map("v$_.16b",(24..31)); $code.=<<___; ## ## _aes_preheat ## ## Fills register %r10 -> .aes_consts (so you can -fPIC) ## and %xmm9-%xmm15 as specified below. ## .type _vpaes_encrypt_preheat,%function .align 4 _vpaes_encrypt_preheat: adrp x10, :pg_hi21:.Lk_inv add x10, x10, :lo12:.Lk_inv movi v17.16b, #0x0f ld1 {v18.2d-v19.2d}, [x10],#32 // .Lk_inv ld1 {v20.2d-v23.2d}, [x10],#64 // .Lk_ipt, .Lk_sbo ld1 {v24.2d-v27.2d}, [x10] // .Lk_sb1, .Lk_sb2 ret .size _vpaes_encrypt_preheat,.-_vpaes_encrypt_preheat ## ## _aes_encrypt_core ## ## AES-encrypt %xmm0. ## ## Inputs: ## %xmm0 = input ## %xmm9-%xmm15 as in _vpaes_preheat ## (%rdx) = scheduled keys ## ## Output in %xmm0 ## Clobbers %xmm1-%xmm5, %r9, %r10, %r11, %rax ## Preserves %xmm6 - %xmm8 so you get some local vectors ## ## .type _vpaes_encrypt_core,%function .align 4 _vpaes_encrypt_core: mov x9, $key ldr w8, [$key,#240] // pull rounds adrp x11, :pg_hi21:.Lk_mc_forward+16 add x11, x11, :lo12:.Lk_mc_forward+16 // vmovdqa .Lk_ipt(%rip), %xmm2 # iptlo ld1 {v16.2d}, [x9], #16 // vmovdqu (%r9), %xmm5 # round0 key and v1.16b, v7.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 ushr v0.16b, v7.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 tbl v1.16b, {$iptlo}, v1.16b // vpshufb %xmm1, %xmm2, %xmm1 // vmovdqa .Lk_ipt+16(%rip), %xmm3 # ipthi tbl v2.16b, {$ipthi}, v0.16b // vpshufb %xmm0, %xmm3, %xmm2 eor v0.16b, v1.16b, v16.16b // vpxor %xmm5, %xmm1, %xmm0 eor v0.16b, v0.16b, v2.16b // vpxor %xmm2, %xmm0, %xmm0 b .Lenc_entry .align 4 .Lenc_loop: // middle of middle round add x10, x11, #0x40 tbl v4.16b, {$sb1t}, v2.16b // vpshufb %xmm2, %xmm13, %xmm4 # 4 = sb1u ld1 {v1.2d}, [x11], #16 // vmovdqa -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[] tbl v0.16b, {$sb1u}, v3.16b // vpshufb %xmm3, %xmm12, %xmm0 # 0 = sb1t eor v4.16b, v4.16b, v16.16b // vpxor %xmm5, %xmm4, %xmm4 # 4 = sb1u + k tbl v5.16b, {$sb2t}, v2.16b // vpshufb %xmm2, %xmm15, %xmm5 # 4 = sb2u eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 0 = A tbl v2.16b, {$sb2u}, v3.16b // vpshufb %xmm3, %xmm14, %xmm2 # 2 = sb2t ld1 {v4.2d}, [x10] // vmovdqa (%r11,%r10), %xmm4 # .Lk_mc_backward[] tbl v3.16b, {v0.16b}, v1.16b // vpshufb %xmm1, %xmm0, %xmm3 # 0 = B eor v2.16b, v2.16b, v5.16b // vpxor %xmm5, %xmm2, %xmm2 # 2 = 2A tbl v0.16b, {v0.16b}, v4.16b // vpshufb %xmm4, %xmm0, %xmm0 # 3 = D eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 # 0 = 2A+B tbl v4.16b, {v3.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm4 # 0 = 2B+C eor v0.16b, v0.16b, v3.16b // vpxor %xmm3, %xmm0, %xmm0 # 3 = 2A+B+D and x11, x11, #~(1<<6) // and \$0x30, %r11 # ... mod 4 eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 0 = 2A+3B+C+D sub w8, w8, #1 // nr-- .Lenc_entry: // top of round and v1.16b, v0.16b, v17.16b // vpand %xmm0, %xmm9, %xmm1 # 0 = k ushr v0.16b, v0.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 # 1 = i tbl v5.16b, {$invhi}, v1.16b // vpshufb %xmm1, %xmm11, %xmm5 # 2 = a/k eor v1.16b, v1.16b, v0.16b // vpxor %xmm0, %xmm1, %xmm1 # 0 = j tbl v3.16b, {$invlo}, v0.16b // vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i tbl v4.16b, {$invlo}, v1.16b // vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j eor v3.16b, v3.16b, v5.16b // vpxor %xmm5, %xmm3, %xmm3 # 3 = iak = 1/i + a/k eor v4.16b, v4.16b, v5.16b // vpxor %xmm5, %xmm4, %xmm4 # 4 = jak = 1/j + a/k tbl v2.16b, {$invlo}, v3.16b // vpshufb %xmm3, %xmm10, %xmm2 # 2 = 1/iak tbl v3.16b, {$invlo}, v4.16b // vpshufb %xmm4, %xmm10, %xmm3 # 3 = 1/jak eor v2.16b, v2.16b, v1.16b // vpxor %xmm1, %xmm2, %xmm2 # 2 = io eor v3.16b, v3.16b, v0.16b // vpxor %xmm0, %xmm3, %xmm3 # 3 = jo ld1 {v16.2d}, [x9],#16 // vmovdqu (%r9), %xmm5 cbnz w8, .Lenc_loop // middle of last round add x10, x11, #0x80 // vmovdqa -0x60(%r10), %xmm4 # 3 : sbou .Lk_sbo // vmovdqa -0x50(%r10), %xmm0 # 0 : sbot .Lk_sbo+16 tbl v4.16b, {$sbou}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbou ld1 {v1.2d}, [x10] // vmovdqa 0x40(%r11,%r10), %xmm1 # .Lk_sr[] tbl v0.16b, {$sbot}, v3.16b // vpshufb %xmm3, %xmm0, %xmm0 # 0 = sb1t eor v4.16b, v4.16b, v16.16b // vpxor %xmm5, %xmm4, %xmm4 # 4 = sb1u + k eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 0 = A tbl v0.16b, {v0.16b}, v1.16b // vpshufb %xmm1, %xmm0, %xmm0 ret .size _vpaes_encrypt_core,.-_vpaes_encrypt_core .globl vpaes_encrypt .type vpaes_encrypt,%function .align 4 vpaes_encrypt: stp x29,x30,[sp,#-16]! add x29,sp,#0 ld1 {v7.16b}, [$inp] bl _vpaes_encrypt_preheat bl _vpaes_encrypt_core st1 {v0.16b}, [$out] ldp x29,x30,[sp],#16 ret .size vpaes_encrypt,.-vpaes_encrypt .type _vpaes_encrypt_2x,%function .align 4 _vpaes_encrypt_2x: mov x9, $key ldr w8, [$key,#240] // pull rounds adrp x11, :pg_hi21:.Lk_mc_forward+16 add x11, x11, :lo12:.Lk_mc_forward+16 // vmovdqa .Lk_ipt(%rip), %xmm2 # iptlo ld1 {v16.2d}, [x9], #16 // vmovdqu (%r9), %xmm5 # round0 key and v1.16b, v14.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 ushr v0.16b, v14.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 and v9.16b, v15.16b, v17.16b ushr v8.16b, v15.16b, #4 tbl v1.16b, {$iptlo}, v1.16b // vpshufb %xmm1, %xmm2, %xmm1 tbl v9.16b, {$iptlo}, v9.16b // vmovdqa .Lk_ipt+16(%rip), %xmm3 # ipthi tbl v2.16b, {$ipthi}, v0.16b // vpshufb %xmm0, %xmm3, %xmm2 tbl v10.16b, {$ipthi}, v8.16b eor v0.16b, v1.16b, v16.16b // vpxor %xmm5, %xmm1, %xmm0 eor v8.16b, v9.16b, v16.16b eor v0.16b, v0.16b, v2.16b // vpxor %xmm2, %xmm0, %xmm0 eor v8.16b, v8.16b, v10.16b b .Lenc_2x_entry .align 4 .Lenc_2x_loop: // middle of middle round add x10, x11, #0x40 tbl v4.16b, {$sb1t}, v2.16b // vpshufb %xmm2, %xmm13, %xmm4 # 4 = sb1u tbl v12.16b, {$sb1t}, v10.16b ld1 {v1.2d}, [x11], #16 // vmovdqa -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[] tbl v0.16b, {$sb1u}, v3.16b // vpshufb %xmm3, %xmm12, %xmm0 # 0 = sb1t tbl v8.16b, {$sb1u}, v11.16b eor v4.16b, v4.16b, v16.16b // vpxor %xmm5, %xmm4, %xmm4 # 4 = sb1u + k eor v12.16b, v12.16b, v16.16b tbl v5.16b, {$sb2t}, v2.16b // vpshufb %xmm2, %xmm15, %xmm5 # 4 = sb2u tbl v13.16b, {$sb2t}, v10.16b eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 0 = A eor v8.16b, v8.16b, v12.16b tbl v2.16b, {$sb2u}, v3.16b // vpshufb %xmm3, %xmm14, %xmm2 # 2 = sb2t tbl v10.16b, {$sb2u}, v11.16b ld1 {v4.2d}, [x10] // vmovdqa (%r11,%r10), %xmm4 # .Lk_mc_backward[] tbl v3.16b, {v0.16b}, v1.16b // vpshufb %xmm1, %xmm0, %xmm3 # 0 = B tbl v11.16b, {v8.16b}, v1.16b eor v2.16b, v2.16b, v5.16b // vpxor %xmm5, %xmm2, %xmm2 # 2 = 2A eor v10.16b, v10.16b, v13.16b tbl v0.16b, {v0.16b}, v4.16b // vpshufb %xmm4, %xmm0, %xmm0 # 3 = D tbl v8.16b, {v8.16b}, v4.16b eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 # 0 = 2A+B eor v11.16b, v11.16b, v10.16b tbl v4.16b, {v3.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm4 # 0 = 2B+C tbl v12.16b, {v11.16b},v1.16b eor v0.16b, v0.16b, v3.16b // vpxor %xmm3, %xmm0, %xmm0 # 3 = 2A+B+D eor v8.16b, v8.16b, v11.16b and x11, x11, #~(1<<6) // and \$0x30, %r11 # ... mod 4 eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 0 = 2A+3B+C+D eor v8.16b, v8.16b, v12.16b sub w8, w8, #1 // nr-- .Lenc_2x_entry: // top of round and v1.16b, v0.16b, v17.16b // vpand %xmm0, %xmm9, %xmm1 # 0 = k ushr v0.16b, v0.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 # 1 = i and v9.16b, v8.16b, v17.16b ushr v8.16b, v8.16b, #4 tbl v5.16b, {$invhi},v1.16b // vpshufb %xmm1, %xmm11, %xmm5 # 2 = a/k tbl v13.16b, {$invhi},v9.16b eor v1.16b, v1.16b, v0.16b // vpxor %xmm0, %xmm1, %xmm1 # 0 = j eor v9.16b, v9.16b, v8.16b tbl v3.16b, {$invlo},v0.16b // vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i tbl v11.16b, {$invlo},v8.16b tbl v4.16b, {$invlo},v1.16b // vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j tbl v12.16b, {$invlo},v9.16b eor v3.16b, v3.16b, v5.16b // vpxor %xmm5, %xmm3, %xmm3 # 3 = iak = 1/i + a/k eor v11.16b, v11.16b, v13.16b eor v4.16b, v4.16b, v5.16b // vpxor %xmm5, %xmm4, %xmm4 # 4 = jak = 1/j + a/k eor v12.16b, v12.16b, v13.16b tbl v2.16b, {$invlo},v3.16b // vpshufb %xmm3, %xmm10, %xmm2 # 2 = 1/iak tbl v10.16b, {$invlo},v11.16b tbl v3.16b, {$invlo},v4.16b // vpshufb %xmm4, %xmm10, %xmm3 # 3 = 1/jak tbl v11.16b, {$invlo},v12.16b eor v2.16b, v2.16b, v1.16b // vpxor %xmm1, %xmm2, %xmm2 # 2 = io eor v10.16b, v10.16b, v9.16b eor v3.16b, v3.16b, v0.16b // vpxor %xmm0, %xmm3, %xmm3 # 3 = jo eor v11.16b, v11.16b, v8.16b ld1 {v16.2d}, [x9],#16 // vmovdqu (%r9), %xmm5 cbnz w8, .Lenc_2x_loop // middle of last round add x10, x11, #0x80 // vmovdqa -0x60(%r10), %xmm4 # 3 : sbou .Lk_sbo // vmovdqa -0x50(%r10), %xmm0 # 0 : sbot .Lk_sbo+16 tbl v4.16b, {$sbou}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbou tbl v12.16b, {$sbou}, v10.16b ld1 {v1.2d}, [x10] // vmovdqa 0x40(%r11,%r10), %xmm1 # .Lk_sr[] tbl v0.16b, {$sbot}, v3.16b // vpshufb %xmm3, %xmm0, %xmm0 # 0 = sb1t tbl v8.16b, {$sbot}, v11.16b eor v4.16b, v4.16b, v16.16b // vpxor %xmm5, %xmm4, %xmm4 # 4 = sb1u + k eor v12.16b, v12.16b, v16.16b eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 0 = A eor v8.16b, v8.16b, v12.16b tbl v0.16b, {v0.16b},v1.16b // vpshufb %xmm1, %xmm0, %xmm0 tbl v1.16b, {v8.16b},v1.16b ret .size _vpaes_encrypt_2x,.-_vpaes_encrypt_2x .type _vpaes_decrypt_preheat,%function .align 4 _vpaes_decrypt_preheat: adrp x10, :pg_hi21:.Lk_inv add x10, x10, :lo12:.Lk_inv movi v17.16b, #0x0f adrp x11, :pg_hi21:.Lk_dipt add x11, x11, :lo12:.Lk_dipt ld1 {v18.2d-v19.2d}, [x10],#32 // .Lk_inv ld1 {v20.2d-v23.2d}, [x11],#64 // .Lk_dipt, .Lk_dsbo ld1 {v24.2d-v27.2d}, [x11],#64 // .Lk_dsb9, .Lk_dsbd ld1 {v28.2d-v31.2d}, [x11] // .Lk_dsbb, .Lk_dsbe ret .size _vpaes_decrypt_preheat,.-_vpaes_decrypt_preheat ## ## Decryption core ## ## Same API as encryption core. ## .type _vpaes_decrypt_core,%function .align 4 _vpaes_decrypt_core: mov x9, $key ldr w8, [$key,#240] // pull rounds // vmovdqa .Lk_dipt(%rip), %xmm2 # iptlo lsl x11, x8, #4 // mov %rax, %r11; shl \$4, %r11 eor x11, x11, #0x30 // xor \$0x30, %r11 adrp x10, :pg_hi21:.Lk_sr add x10, x10, :lo12:.Lk_sr and x11, x11, #0x30 // and \$0x30, %r11 add x11, x11, x10 adrp x10, :pg_hi21:.Lk_mc_forward+48 add x10, x10, :lo12:.Lk_mc_forward+48 ld1 {v16.2d}, [x9],#16 // vmovdqu (%r9), %xmm4 # round0 key and v1.16b, v7.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 ushr v0.16b, v7.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 tbl v2.16b, {$iptlo}, v1.16b // vpshufb %xmm1, %xmm2, %xmm2 ld1 {v5.2d}, [x10] // vmovdqa .Lk_mc_forward+48(%rip), %xmm5 // vmovdqa .Lk_dipt+16(%rip), %xmm1 # ipthi tbl v0.16b, {$ipthi}, v0.16b // vpshufb %xmm0, %xmm1, %xmm0 eor v2.16b, v2.16b, v16.16b // vpxor %xmm4, %xmm2, %xmm2 eor v0.16b, v0.16b, v2.16b // vpxor %xmm2, %xmm0, %xmm0 b .Ldec_entry .align 4 .Ldec_loop: // // Inverse mix columns // // vmovdqa -0x20(%r10),%xmm4 # 4 : sb9u // vmovdqa -0x10(%r10),%xmm1 # 0 : sb9t tbl v4.16b, {$sb9u}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sb9u tbl v1.16b, {$sb9t}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sb9t eor v0.16b, v4.16b, v16.16b // vpxor %xmm4, %xmm0, %xmm0 // vmovdqa 0x00(%r10),%xmm4 # 4 : sbdu eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch // vmovdqa 0x10(%r10),%xmm1 # 0 : sbdt tbl v4.16b, {$sbdu}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbdu tbl v0.16b, {v0.16b}, v5.16b // vpshufb %xmm5, %xmm0, %xmm0 # MC ch tbl v1.16b, {$sbdt}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbdt eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 4 = ch // vmovdqa 0x20(%r10), %xmm4 # 4 : sbbu eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch // vmovdqa 0x30(%r10), %xmm1 # 0 : sbbt tbl v4.16b, {$sbbu}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbbu tbl v0.16b, {v0.16b}, v5.16b // vpshufb %xmm5, %xmm0, %xmm0 # MC ch tbl v1.16b, {$sbbt}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbbt eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 4 = ch // vmovdqa 0x40(%r10), %xmm4 # 4 : sbeu eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch // vmovdqa 0x50(%r10), %xmm1 # 0 : sbet tbl v4.16b, {$sbeu}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbeu tbl v0.16b, {v0.16b}, v5.16b // vpshufb %xmm5, %xmm0, %xmm0 # MC ch tbl v1.16b, {$sbet}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbet eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 4 = ch ext v5.16b, v5.16b, v5.16b, #12 // vpalignr \$12, %xmm5, %xmm5, %xmm5 eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch sub w8, w8, #1 // sub \$1,%rax # nr-- .Ldec_entry: // top of round and v1.16b, v0.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 # 0 = k ushr v0.16b, v0.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 # 1 = i tbl v2.16b, {$invhi}, v1.16b // vpshufb %xmm1, %xmm11, %xmm2 # 2 = a/k eor v1.16b, v1.16b, v0.16b // vpxor %xmm0, %xmm1, %xmm1 # 0 = j tbl v3.16b, {$invlo}, v0.16b // vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i tbl v4.16b, {$invlo}, v1.16b // vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 # 3 = iak = 1/i + a/k eor v4.16b, v4.16b, v2.16b // vpxor %xmm2, %xmm4, %xmm4 # 4 = jak = 1/j + a/k tbl v2.16b, {$invlo}, v3.16b // vpshufb %xmm3, %xmm10, %xmm2 # 2 = 1/iak tbl v3.16b, {$invlo}, v4.16b // vpshufb %xmm4, %xmm10, %xmm3 # 3 = 1/jak eor v2.16b, v2.16b, v1.16b // vpxor %xmm1, %xmm2, %xmm2 # 2 = io eor v3.16b, v3.16b, v0.16b // vpxor %xmm0, %xmm3, %xmm3 # 3 = jo ld1 {v16.2d}, [x9],#16 // vmovdqu (%r9), %xmm0 cbnz w8, .Ldec_loop // middle of last round // vmovdqa 0x60(%r10), %xmm4 # 3 : sbou tbl v4.16b, {$sbou}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbou // vmovdqa 0x70(%r10), %xmm1 # 0 : sbot ld1 {v2.2d}, [x11] // vmovdqa -0x160(%r11), %xmm2 # .Lk_sr-.Lk_dsbd=-0x160 tbl v1.16b, {$sbot}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sb1t eor v4.16b, v4.16b, v16.16b // vpxor %xmm0, %xmm4, %xmm4 # 4 = sb1u + k eor v0.16b, v1.16b, v4.16b // vpxor %xmm4, %xmm1, %xmm0 # 0 = A tbl v0.16b, {v0.16b}, v2.16b // vpshufb %xmm2, %xmm0, %xmm0 ret .size _vpaes_decrypt_core,.-_vpaes_decrypt_core .globl vpaes_decrypt .type vpaes_decrypt,%function .align 4 vpaes_decrypt: stp x29,x30,[sp,#-16]! add x29,sp,#0 ld1 {v7.16b}, [$inp] bl _vpaes_decrypt_preheat bl _vpaes_decrypt_core st1 {v0.16b}, [$out] ldp x29,x30,[sp],#16 ret .size vpaes_decrypt,.-vpaes_decrypt // v14-v15 input, v0-v1 output .type _vpaes_decrypt_2x,%function .align 4 _vpaes_decrypt_2x: mov x9, $key ldr w8, [$key,#240] // pull rounds // vmovdqa .Lk_dipt(%rip), %xmm2 # iptlo lsl x11, x8, #4 // mov %rax, %r11; shl \$4, %r11 eor x11, x11, #0x30 // xor \$0x30, %r11 adrp x10, :pg_hi21:.Lk_sr add x10, x10, :lo12:.Lk_sr and x11, x11, #0x30 // and \$0x30, %r11 add x11, x11, x10 adrp x10, :pg_hi21:.Lk_mc_forward+48 add x10, x10, :lo12:.Lk_mc_forward+48 ld1 {v16.2d}, [x9],#16 // vmovdqu (%r9), %xmm4 # round0 key and v1.16b, v14.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 ushr v0.16b, v14.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 and v9.16b, v15.16b, v17.16b ushr v8.16b, v15.16b, #4 tbl v2.16b, {$iptlo},v1.16b // vpshufb %xmm1, %xmm2, %xmm2 tbl v10.16b, {$iptlo},v9.16b ld1 {v5.2d}, [x10] // vmovdqa .Lk_mc_forward+48(%rip), %xmm5 // vmovdqa .Lk_dipt+16(%rip), %xmm1 # ipthi tbl v0.16b, {$ipthi},v0.16b // vpshufb %xmm0, %xmm1, %xmm0 tbl v8.16b, {$ipthi},v8.16b eor v2.16b, v2.16b, v16.16b // vpxor %xmm4, %xmm2, %xmm2 eor v10.16b, v10.16b, v16.16b eor v0.16b, v0.16b, v2.16b // vpxor %xmm2, %xmm0, %xmm0 eor v8.16b, v8.16b, v10.16b b .Ldec_2x_entry .align 4 .Ldec_2x_loop: // // Inverse mix columns // // vmovdqa -0x20(%r10),%xmm4 # 4 : sb9u // vmovdqa -0x10(%r10),%xmm1 # 0 : sb9t tbl v4.16b, {$sb9u}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sb9u tbl v12.16b, {$sb9u}, v10.16b tbl v1.16b, {$sb9t}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sb9t tbl v9.16b, {$sb9t}, v11.16b eor v0.16b, v4.16b, v16.16b // vpxor %xmm4, %xmm0, %xmm0 eor v8.16b, v12.16b, v16.16b // vmovdqa 0x00(%r10),%xmm4 # 4 : sbdu eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch eor v8.16b, v8.16b, v9.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch // vmovdqa 0x10(%r10),%xmm1 # 0 : sbdt tbl v4.16b, {$sbdu}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbdu tbl v12.16b, {$sbdu}, v10.16b tbl v0.16b, {v0.16b},v5.16b // vpshufb %xmm5, %xmm0, %xmm0 # MC ch tbl v8.16b, {v8.16b},v5.16b tbl v1.16b, {$sbdt}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbdt tbl v9.16b, {$sbdt}, v11.16b eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 4 = ch eor v8.16b, v8.16b, v12.16b // vmovdqa 0x20(%r10), %xmm4 # 4 : sbbu eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch eor v8.16b, v8.16b, v9.16b // vmovdqa 0x30(%r10), %xmm1 # 0 : sbbt tbl v4.16b, {$sbbu}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbbu tbl v12.16b, {$sbbu}, v10.16b tbl v0.16b, {v0.16b},v5.16b // vpshufb %xmm5, %xmm0, %xmm0 # MC ch tbl v8.16b, {v8.16b},v5.16b tbl v1.16b, {$sbbt}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbbt tbl v9.16b, {$sbbt}, v11.16b eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 4 = ch eor v8.16b, v8.16b, v12.16b // vmovdqa 0x40(%r10), %xmm4 # 4 : sbeu eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch eor v8.16b, v8.16b, v9.16b // vmovdqa 0x50(%r10), %xmm1 # 0 : sbet tbl v4.16b, {$sbeu}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbeu tbl v12.16b, {$sbeu}, v10.16b tbl v0.16b, {v0.16b},v5.16b // vpshufb %xmm5, %xmm0, %xmm0 # MC ch tbl v8.16b, {v8.16b},v5.16b tbl v1.16b, {$sbet}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbet tbl v9.16b, {$sbet}, v11.16b eor v0.16b, v0.16b, v4.16b // vpxor %xmm4, %xmm0, %xmm0 # 4 = ch eor v8.16b, v8.16b, v12.16b ext v5.16b, v5.16b, v5.16b, #12 // vpalignr \$12, %xmm5, %xmm5, %xmm5 eor v0.16b, v0.16b, v1.16b // vpxor %xmm1, %xmm0, %xmm0 # 0 = ch eor v8.16b, v8.16b, v9.16b sub w8, w8, #1 // sub \$1,%rax # nr-- .Ldec_2x_entry: // top of round and v1.16b, v0.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 # 0 = k ushr v0.16b, v0.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 # 1 = i and v9.16b, v8.16b, v17.16b ushr v8.16b, v8.16b, #4 tbl v2.16b, {$invhi},v1.16b // vpshufb %xmm1, %xmm11, %xmm2 # 2 = a/k tbl v10.16b, {$invhi},v9.16b eor v1.16b, v1.16b, v0.16b // vpxor %xmm0, %xmm1, %xmm1 # 0 = j eor v9.16b, v9.16b, v8.16b tbl v3.16b, {$invlo},v0.16b // vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i tbl v11.16b, {$invlo},v8.16b tbl v4.16b, {$invlo},v1.16b // vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j tbl v12.16b, {$invlo},v9.16b eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 # 3 = iak = 1/i + a/k eor v11.16b, v11.16b, v10.16b eor v4.16b, v4.16b, v2.16b // vpxor %xmm2, %xmm4, %xmm4 # 4 = jak = 1/j + a/k eor v12.16b, v12.16b, v10.16b tbl v2.16b, {$invlo},v3.16b // vpshufb %xmm3, %xmm10, %xmm2 # 2 = 1/iak tbl v10.16b, {$invlo},v11.16b tbl v3.16b, {$invlo},v4.16b // vpshufb %xmm4, %xmm10, %xmm3 # 3 = 1/jak tbl v11.16b, {$invlo},v12.16b eor v2.16b, v2.16b, v1.16b // vpxor %xmm1, %xmm2, %xmm2 # 2 = io eor v10.16b, v10.16b, v9.16b eor v3.16b, v3.16b, v0.16b // vpxor %xmm0, %xmm3, %xmm3 # 3 = jo eor v11.16b, v11.16b, v8.16b ld1 {v16.2d}, [x9],#16 // vmovdqu (%r9), %xmm0 cbnz w8, .Ldec_2x_loop // middle of last round // vmovdqa 0x60(%r10), %xmm4 # 3 : sbou tbl v4.16b, {$sbou}, v2.16b // vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbou tbl v12.16b, {$sbou}, v10.16b // vmovdqa 0x70(%r10), %xmm1 # 0 : sbot tbl v1.16b, {$sbot}, v3.16b // vpshufb %xmm3, %xmm1, %xmm1 # 0 = sb1t tbl v9.16b, {$sbot}, v11.16b ld1 {v2.2d}, [x11] // vmovdqa -0x160(%r11), %xmm2 # .Lk_sr-.Lk_dsbd=-0x160 eor v4.16b, v4.16b, v16.16b // vpxor %xmm0, %xmm4, %xmm4 # 4 = sb1u + k eor v12.16b, v12.16b, v16.16b eor v0.16b, v1.16b, v4.16b // vpxor %xmm4, %xmm1, %xmm0 # 0 = A eor v8.16b, v9.16b, v12.16b tbl v0.16b, {v0.16b},v2.16b // vpshufb %xmm2, %xmm0, %xmm0 tbl v1.16b, {v8.16b},v2.16b ret .size _vpaes_decrypt_2x,.-_vpaes_decrypt_2x ___ } { my ($inp,$bits,$out,$dir)=("x0","w1","x2","w3"); my ($invlo,$invhi,$iptlo,$ipthi,$rcon) = map("v$_.16b",(18..21,8)); $code.=<<___; ######################################################## ## ## ## AES key schedule ## ## ## ######################################################## .type _vpaes_key_preheat,%function .align 4 _vpaes_key_preheat: adrp x10, :pg_hi21:.Lk_inv add x10, x10, :lo12:.Lk_inv movi v16.16b, #0x5b // .Lk_s63 adrp x11, :pg_hi21:.Lk_sb1 add x11, x11, :lo12:.Lk_sb1 movi v17.16b, #0x0f // .Lk_s0F ld1 {v18.2d-v21.2d}, [x10] // .Lk_inv, .Lk_ipt adrp x10, :pg_hi21:.Lk_dksd add x10, x10, :lo12:.Lk_dksd ld1 {v22.2d-v23.2d}, [x11] // .Lk_sb1 adrp x11, :pg_hi21:.Lk_mc_forward add x11, x11, :lo12:.Lk_mc_forward ld1 {v24.2d-v27.2d}, [x10],#64 // .Lk_dksd, .Lk_dksb ld1 {v28.2d-v31.2d}, [x10],#64 // .Lk_dkse, .Lk_dks9 ld1 {v8.2d}, [x10] // .Lk_rcon ld1 {v9.2d}, [x11] // .Lk_mc_forward[0] ret .size _vpaes_key_preheat,.-_vpaes_key_preheat .type _vpaes_schedule_core,%function .align 4 _vpaes_schedule_core: stp x29, x30, [sp,#-16]! add x29,sp,#0 bl _vpaes_key_preheat // load the tables ld1 {v0.16b}, [$inp],#16 // vmovdqu (%rdi), %xmm0 # load key (unaligned) // input transform mov v3.16b, v0.16b // vmovdqa %xmm0, %xmm3 bl _vpaes_schedule_transform mov v7.16b, v0.16b // vmovdqa %xmm0, %xmm7 adrp x10, :pg_hi21:.Lk_sr // lea .Lk_sr(%rip),%r10 add x10, x10, :lo12:.Lk_sr add x8, x8, x10 cbnz $dir, .Lschedule_am_decrypting // encrypting, output zeroth round key after transform st1 {v0.2d}, [$out] // vmovdqu %xmm0, (%rdx) b .Lschedule_go .Lschedule_am_decrypting: // decrypting, output zeroth round key after shiftrows ld1 {v1.2d}, [x8] // vmovdqa (%r8,%r10), %xmm1 tbl v3.16b, {v3.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm3 st1 {v3.2d}, [$out] // vmovdqu %xmm3, (%rdx) eor x8, x8, #0x30 // xor \$0x30, %r8 .Lschedule_go: cmp $bits, #192 // cmp \$192, %esi b.hi .Lschedule_256 b.eq .Lschedule_192 // 128: fall though ## ## .schedule_128 ## ## 128-bit specific part of key schedule. ## ## This schedule is really simple, because all its parts ## are accomplished by the subroutines. ## .Lschedule_128: mov $inp, #10 // mov \$10, %esi .Loop_schedule_128: sub $inp, $inp, #1 // dec %esi bl _vpaes_schedule_round cbz $inp, .Lschedule_mangle_last bl _vpaes_schedule_mangle // write output b .Loop_schedule_128 ## ## .aes_schedule_192 ## ## 192-bit specific part of key schedule. ## ## The main body of this schedule is the same as the 128-bit ## schedule, but with more smearing. The long, high side is ## stored in %xmm7 as before, and the short, low side is in ## the high bits of %xmm6. ## ## This schedule is somewhat nastier, however, because each ## round produces 192 bits of key material, or 1.5 round keys. ## Therefore, on each cycle we do 2 rounds and produce 3 round ## keys. ## .align 4 .Lschedule_192: sub $inp, $inp, #8 ld1 {v0.16b}, [$inp] // vmovdqu 8(%rdi),%xmm0 # load key part 2 (very unaligned) bl _vpaes_schedule_transform // input transform mov v6.16b, v0.16b // vmovdqa %xmm0, %xmm6 # save short part eor v4.16b, v4.16b, v4.16b // vpxor %xmm4, %xmm4, %xmm4 # clear 4 ins v6.d[0], v4.d[0] // vmovhlps %xmm4, %xmm6, %xmm6 # clobber low side with zeros mov $inp, #4 // mov \$4, %esi .Loop_schedule_192: sub $inp, $inp, #1 // dec %esi bl _vpaes_schedule_round ext v0.16b, v6.16b, v0.16b, #8 // vpalignr \$8,%xmm6,%xmm0,%xmm0 bl _vpaes_schedule_mangle // save key n bl _vpaes_schedule_192_smear bl _vpaes_schedule_mangle // save key n+1 bl _vpaes_schedule_round cbz $inp, .Lschedule_mangle_last bl _vpaes_schedule_mangle // save key n+2 bl _vpaes_schedule_192_smear b .Loop_schedule_192 ## ## .aes_schedule_256 ## ## 256-bit specific part of key schedule. ## ## The structure here is very similar to the 128-bit ## schedule, but with an additional "low side" in ## %xmm6. The low side's rounds are the same as the ## high side's, except no rcon and no rotation. ## .align 4 .Lschedule_256: ld1 {v0.16b}, [$inp] // vmovdqu 16(%rdi),%xmm0 # load key part 2 (unaligned) bl _vpaes_schedule_transform // input transform mov $inp, #7 // mov \$7, %esi .Loop_schedule_256: sub $inp, $inp, #1 // dec %esi bl _vpaes_schedule_mangle // output low result mov v6.16b, v0.16b // vmovdqa %xmm0, %xmm6 # save cur_lo in xmm6 // high round bl _vpaes_schedule_round cbz $inp, .Lschedule_mangle_last bl _vpaes_schedule_mangle // low round. swap xmm7 and xmm6 dup v0.4s, v0.s[3] // vpshufd \$0xFF, %xmm0, %xmm0 movi v4.16b, #0 mov v5.16b, v7.16b // vmovdqa %xmm7, %xmm5 mov v7.16b, v6.16b // vmovdqa %xmm6, %xmm7 bl _vpaes_schedule_low_round mov v7.16b, v5.16b // vmovdqa %xmm5, %xmm7 b .Loop_schedule_256 ## ## .aes_schedule_mangle_last ## ## Mangler for last round of key schedule ## Mangles %xmm0 ## when encrypting, outputs out(%xmm0) ^ 63 ## when decrypting, outputs unskew(%xmm0) ## ## Always called right before return... jumps to cleanup and exits ## .align 4 .Lschedule_mangle_last: // schedule last round key from xmm0 adrp x11, :pg_hi21:.Lk_deskew // lea .Lk_deskew(%rip),%r11 # prepare to deskew add x11, x11, :lo12:.Lk_deskew cbnz $dir, .Lschedule_mangle_last_dec // encrypting ld1 {v1.2d}, [x8] // vmovdqa (%r8,%r10),%xmm1 adrp x11, :pg_hi21:.Lk_opt // lea .Lk_opt(%rip), %r11 # prepare to output transform add x11, x11, :lo12:.Lk_opt add $out, $out, #32 // add \$32, %rdx tbl v0.16b, {v0.16b}, v1.16b // vpshufb %xmm1, %xmm0, %xmm0 # output permute .Lschedule_mangle_last_dec: ld1 {v20.2d-v21.2d}, [x11] // reload constants sub $out, $out, #16 // add \$-16, %rdx eor v0.16b, v0.16b, v16.16b // vpxor .Lk_s63(%rip), %xmm0, %xmm0 bl _vpaes_schedule_transform // output transform st1 {v0.2d}, [$out] // vmovdqu %xmm0, (%rdx) # save last key // cleanup eor v0.16b, v0.16b, v0.16b // vpxor %xmm0, %xmm0, %xmm0 eor v1.16b, v1.16b, v1.16b // vpxor %xmm1, %xmm1, %xmm1 eor v2.16b, v2.16b, v2.16b // vpxor %xmm2, %xmm2, %xmm2 eor v3.16b, v3.16b, v3.16b // vpxor %xmm3, %xmm3, %xmm3 eor v4.16b, v4.16b, v4.16b // vpxor %xmm4, %xmm4, %xmm4 eor v5.16b, v5.16b, v5.16b // vpxor %xmm5, %xmm5, %xmm5 eor v6.16b, v6.16b, v6.16b // vpxor %xmm6, %xmm6, %xmm6 eor v7.16b, v7.16b, v7.16b // vpxor %xmm7, %xmm7, %xmm7 ldp x29, x30, [sp],#16 ret .size _vpaes_schedule_core,.-_vpaes_schedule_core ## ## .aes_schedule_192_smear ## ## Smear the short, low side in the 192-bit key schedule. ## ## Inputs: ## %xmm7: high side, b a x y ## %xmm6: low side, d c 0 0 ## %xmm13: 0 ## ## Outputs: ## %xmm6: b+c+d b+c 0 0 ## %xmm0: b+c+d b+c b a ## .type _vpaes_schedule_192_smear,%function .align 4 _vpaes_schedule_192_smear: movi v1.16b, #0 dup v0.4s, v7.s[3] ins v1.s[3], v6.s[2] // vpshufd \$0x80, %xmm6, %xmm1 # d c 0 0 -> c 0 0 0 ins v0.s[0], v7.s[2] // vpshufd \$0xFE, %xmm7, %xmm0 # b a _ _ -> b b b a eor v6.16b, v6.16b, v1.16b // vpxor %xmm1, %xmm6, %xmm6 # -> c+d c 0 0 eor v1.16b, v1.16b, v1.16b // vpxor %xmm1, %xmm1, %xmm1 eor v6.16b, v6.16b, v0.16b // vpxor %xmm0, %xmm6, %xmm6 # -> b+c+d b+c b a mov v0.16b, v6.16b // vmovdqa %xmm6, %xmm0 ins v6.d[0], v1.d[0] // vmovhlps %xmm1, %xmm6, %xmm6 # clobber low side with zeros ret .size _vpaes_schedule_192_smear,.-_vpaes_schedule_192_smear ## ## .aes_schedule_round ## ## Runs one main round of the key schedule on %xmm0, %xmm7 ## ## Specifically, runs subbytes on the high dword of %xmm0 ## then rotates it by one byte and xors into the low dword of ## %xmm7. ## ## Adds rcon from low byte of %xmm8, then rotates %xmm8 for ## next rcon. ## ## Smears the dwords of %xmm7 by xoring the low into the ## second low, result into third, result into highest. ## ## Returns results in %xmm7 = %xmm0. ## Clobbers %xmm1-%xmm4, %r11. ## .type _vpaes_schedule_round,%function .align 4 _vpaes_schedule_round: // extract rcon from xmm8 movi v4.16b, #0 // vpxor %xmm4, %xmm4, %xmm4 ext v1.16b, $rcon, v4.16b, #15 // vpalignr \$15, %xmm8, %xmm4, %xmm1 ext $rcon, $rcon, $rcon, #15 // vpalignr \$15, %xmm8, %xmm8, %xmm8 eor v7.16b, v7.16b, v1.16b // vpxor %xmm1, %xmm7, %xmm7 // rotate dup v0.4s, v0.s[3] // vpshufd \$0xFF, %xmm0, %xmm0 ext v0.16b, v0.16b, v0.16b, #1 // vpalignr \$1, %xmm0, %xmm0, %xmm0 // fall through... // low round: same as high round, but no rotation and no rcon. _vpaes_schedule_low_round: // smear xmm7 ext v1.16b, v4.16b, v7.16b, #12 // vpslldq \$4, %xmm7, %xmm1 eor v7.16b, v7.16b, v1.16b // vpxor %xmm1, %xmm7, %xmm7 ext v4.16b, v4.16b, v7.16b, #8 // vpslldq \$8, %xmm7, %xmm4 // subbytes and v1.16b, v0.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 # 0 = k ushr v0.16b, v0.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 # 1 = i eor v7.16b, v7.16b, v4.16b // vpxor %xmm4, %xmm7, %xmm7 tbl v2.16b, {$invhi}, v1.16b // vpshufb %xmm1, %xmm11, %xmm2 # 2 = a/k eor v1.16b, v1.16b, v0.16b // vpxor %xmm0, %xmm1, %xmm1 # 0 = j tbl v3.16b, {$invlo}, v0.16b // vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 # 3 = iak = 1/i + a/k tbl v4.16b, {$invlo}, v1.16b // vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j eor v7.16b, v7.16b, v16.16b // vpxor .Lk_s63(%rip), %xmm7, %xmm7 tbl v3.16b, {$invlo}, v3.16b // vpshufb %xmm3, %xmm10, %xmm3 # 2 = 1/iak eor v4.16b, v4.16b, v2.16b // vpxor %xmm2, %xmm4, %xmm4 # 4 = jak = 1/j + a/k tbl v2.16b, {$invlo}, v4.16b // vpshufb %xmm4, %xmm10, %xmm2 # 3 = 1/jak eor v3.16b, v3.16b, v1.16b // vpxor %xmm1, %xmm3, %xmm3 # 2 = io eor v2.16b, v2.16b, v0.16b // vpxor %xmm0, %xmm2, %xmm2 # 3 = jo tbl v4.16b, {v23.16b}, v3.16b // vpshufb %xmm3, %xmm13, %xmm4 # 4 = sbou tbl v1.16b, {v22.16b}, v2.16b // vpshufb %xmm2, %xmm12, %xmm1 # 0 = sb1t eor v1.16b, v1.16b, v4.16b // vpxor %xmm4, %xmm1, %xmm1 # 0 = sbox output // add in smeared stuff eor v0.16b, v1.16b, v7.16b // vpxor %xmm7, %xmm1, %xmm0 eor v7.16b, v1.16b, v7.16b // vmovdqa %xmm0, %xmm7 ret .size _vpaes_schedule_round,.-_vpaes_schedule_round ## ## .aes_schedule_transform ## ## Linear-transform %xmm0 according to tables at (%r11) ## ## Requires that %xmm9 = 0x0F0F... as in preheat ## Output in %xmm0 ## Clobbers %xmm1, %xmm2 ## .type _vpaes_schedule_transform,%function .align 4 _vpaes_schedule_transform: and v1.16b, v0.16b, v17.16b // vpand %xmm9, %xmm0, %xmm1 ushr v0.16b, v0.16b, #4 // vpsrlb \$4, %xmm0, %xmm0 // vmovdqa (%r11), %xmm2 # lo tbl v2.16b, {$iptlo}, v1.16b // vpshufb %xmm1, %xmm2, %xmm2 // vmovdqa 16(%r11), %xmm1 # hi tbl v0.16b, {$ipthi}, v0.16b // vpshufb %xmm0, %xmm1, %xmm0 eor v0.16b, v0.16b, v2.16b // vpxor %xmm2, %xmm0, %xmm0 ret .size _vpaes_schedule_transform,.-_vpaes_schedule_transform ## ## .aes_schedule_mangle ## ## Mangle xmm0 from (basis-transformed) standard version ## to our version. ## ## On encrypt, ## xor with 0x63 ## multiply by circulant 0,1,1,1 ## apply shiftrows transform ## ## On decrypt, ## xor with 0x63 ## multiply by "inverse mixcolumns" circulant E,B,D,9 ## deskew ## apply shiftrows transform ## ## ## Writes out to (%rdx), and increments or decrements it ## Keeps track of round number mod 4 in %r8 ## Preserves xmm0 ## Clobbers xmm1-xmm5 ## .type _vpaes_schedule_mangle,%function .align 4 _vpaes_schedule_mangle: mov v4.16b, v0.16b // vmovdqa %xmm0, %xmm4 # save xmm0 for later // vmovdqa .Lk_mc_forward(%rip),%xmm5 cbnz $dir, .Lschedule_mangle_dec // encrypting eor v4.16b, v0.16b, v16.16b // vpxor .Lk_s63(%rip), %xmm0, %xmm4 add $out, $out, #16 // add \$16, %rdx tbl v4.16b, {v4.16b}, v9.16b // vpshufb %xmm5, %xmm4, %xmm4 tbl v1.16b, {v4.16b}, v9.16b // vpshufb %xmm5, %xmm4, %xmm1 tbl v3.16b, {v1.16b}, v9.16b // vpshufb %xmm5, %xmm1, %xmm3 eor v4.16b, v4.16b, v1.16b // vpxor %xmm1, %xmm4, %xmm4 ld1 {v1.2d}, [x8] // vmovdqa (%r8,%r10), %xmm1 eor v3.16b, v3.16b, v4.16b // vpxor %xmm4, %xmm3, %xmm3 b .Lschedule_mangle_both .align 4 .Lschedule_mangle_dec: // inverse mix columns // lea .Lk_dksd(%rip),%r11 ushr v1.16b, v4.16b, #4 // vpsrlb \$4, %xmm4, %xmm1 # 1 = hi and v4.16b, v4.16b, v17.16b // vpand %xmm9, %xmm4, %xmm4 # 4 = lo // vmovdqa 0x00(%r11), %xmm2 tbl v2.16b, {v24.16b}, v4.16b // vpshufb %xmm4, %xmm2, %xmm2 // vmovdqa 0x10(%r11), %xmm3 tbl v3.16b, {v25.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm3 eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 tbl v3.16b, {v3.16b}, v9.16b // vpshufb %xmm5, %xmm3, %xmm3 // vmovdqa 0x20(%r11), %xmm2 tbl v2.16b, {v26.16b}, v4.16b // vpshufb %xmm4, %xmm2, %xmm2 eor v2.16b, v2.16b, v3.16b // vpxor %xmm3, %xmm2, %xmm2 // vmovdqa 0x30(%r11), %xmm3 tbl v3.16b, {v27.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm3 eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 tbl v3.16b, {v3.16b}, v9.16b // vpshufb %xmm5, %xmm3, %xmm3 // vmovdqa 0x40(%r11), %xmm2 tbl v2.16b, {v28.16b}, v4.16b // vpshufb %xmm4, %xmm2, %xmm2 eor v2.16b, v2.16b, v3.16b // vpxor %xmm3, %xmm2, %xmm2 // vmovdqa 0x50(%r11), %xmm3 tbl v3.16b, {v29.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm3 eor v3.16b, v3.16b, v2.16b // vpxor %xmm2, %xmm3, %xmm3 // vmovdqa 0x60(%r11), %xmm2 tbl v2.16b, {v30.16b}, v4.16b // vpshufb %xmm4, %xmm2, %xmm2 tbl v3.16b, {v3.16b}, v9.16b // vpshufb %xmm5, %xmm3, %xmm3 // vmovdqa 0x70(%r11), %xmm4 tbl v4.16b, {v31.16b}, v1.16b // vpshufb %xmm1, %xmm4, %xmm4 ld1 {v1.2d}, [x8] // vmovdqa (%r8,%r10), %xmm1 eor v2.16b, v2.16b, v3.16b // vpxor %xmm3, %xmm2, %xmm2 eor v3.16b, v4.16b, v2.16b // vpxor %xmm2, %xmm4, %xmm3 sub $out, $out, #16 // add \$-16, %rdx .Lschedule_mangle_both: tbl v3.16b, {v3.16b}, v1.16b // vpshufb %xmm1, %xmm3, %xmm3 add x8, x8, #64-16 // add \$-16, %r8 and x8, x8, #~(1<<6) // and \$0x30, %r8 st1 {v3.2d}, [$out] // vmovdqu %xmm3, (%rdx) ret .size _vpaes_schedule_mangle,.-_vpaes_schedule_mangle .globl vpaes_set_encrypt_key .type vpaes_set_encrypt_key,%function .align 4 vpaes_set_encrypt_key: stp x29,x30,[sp,#-16]! add x29,sp,#0 stp d8,d9,[sp,#-16]! // ABI spec says so lsr w9, $bits, #5 // shr \$5,%eax add w9, w9, #5 // \$5,%eax str w9, [$out,#240] // mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5; mov $dir, #0 // mov \$0,%ecx mov x8, #0x30 // mov \$0x30,%r8d bl _vpaes_schedule_core eor x0, x0, x0 ldp d8,d9,[sp],#16 ldp x29,x30,[sp],#16 ret .size vpaes_set_encrypt_key,.-vpaes_set_encrypt_key .globl vpaes_set_decrypt_key .type vpaes_set_decrypt_key,%function .align 4 vpaes_set_decrypt_key: stp x29,x30,[sp,#-16]! add x29,sp,#0 stp d8,d9,[sp,#-16]! // ABI spec says so lsr w9, $bits, #5 // shr \$5,%eax add w9, w9, #5 // \$5,%eax str w9, [$out,#240] // mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5; lsl w9, w9, #4 // shl \$4,%eax add $out, $out, #16 // lea 16(%rdx,%rax),%rdx add $out, $out, x9 mov $dir, #1 // mov \$1,%ecx lsr w8, $bits, #1 // shr \$1,%r8d and x8, x8, #32 // and \$32,%r8d eor x8, x8, #32 // xor \$32,%r8d # nbits==192?0:32 bl _vpaes_schedule_core ldp d8,d9,[sp],#16 ldp x29,x30,[sp],#16 ret .size vpaes_set_decrypt_key,.-vpaes_set_decrypt_key ___ } { my ($inp,$out,$len,$key,$ivec,$dir) = map("x$_",(0..5)); $code.=<<___; .globl vpaes_cbc_encrypt .type vpaes_cbc_encrypt,%function .align 4 vpaes_cbc_encrypt: cbz $len, .Lcbc_abort cmp w5, #0 // check direction b.eq vpaes_cbc_decrypt stp x29,x30,[sp,#-16]! add x29,sp,#0 mov x17, $len // reassign mov x2, $key // reassign ld1 {v0.16b}, [$ivec] // load ivec bl _vpaes_encrypt_preheat b .Lcbc_enc_loop .align 4 .Lcbc_enc_loop: ld1 {v7.16b}, [$inp],#16 // load input eor v7.16b, v7.16b, v0.16b // xor with ivec bl _vpaes_encrypt_core st1 {v0.16b}, [$out],#16 // save output subs x17, x17, #16 b.hi .Lcbc_enc_loop st1 {v0.16b}, [$ivec] // write ivec ldp x29,x30,[sp],#16 .Lcbc_abort: ret .size vpaes_cbc_encrypt,.-vpaes_cbc_encrypt .type vpaes_cbc_decrypt,%function .align 4 vpaes_cbc_decrypt: stp x29,x30,[sp,#-16]! add x29,sp,#0 stp d8,d9,[sp,#-16]! // ABI spec says so stp d10,d11,[sp,#-16]! stp d12,d13,[sp,#-16]! stp d14,d15,[sp,#-16]! mov x17, $len // reassign mov x2, $key // reassign ld1 {v6.16b}, [$ivec] // load ivec bl _vpaes_decrypt_preheat tst x17, #16 b.eq .Lcbc_dec_loop2x ld1 {v7.16b}, [$inp], #16 // load input bl _vpaes_decrypt_core eor v0.16b, v0.16b, v6.16b // xor with ivec orr v6.16b, v7.16b, v7.16b // next ivec value st1 {v0.16b}, [$out], #16 subs x17, x17, #16 b.ls .Lcbc_dec_done .align 4 .Lcbc_dec_loop2x: ld1 {v14.16b,v15.16b}, [$inp], #32 bl _vpaes_decrypt_2x eor v0.16b, v0.16b, v6.16b // xor with ivec eor v1.16b, v1.16b, v14.16b orr v6.16b, v15.16b, v15.16b st1 {v0.16b,v1.16b}, [$out], #32 subs x17, x17, #32 b.hi .Lcbc_dec_loop2x .Lcbc_dec_done: st1 {v6.16b}, [$ivec] ldp d14,d15,[sp],#16 ldp d12,d13,[sp],#16 ldp d10,d11,[sp],#16 ldp d8,d9,[sp],#16 ldp x29,x30,[sp],#16 ret .size vpaes_cbc_decrypt,.-vpaes_cbc_decrypt ___ # We omit vpaes_ecb_* in BoringSSL. They are unused. if (0) { $code.=<<___; .globl vpaes_ecb_encrypt .type vpaes_ecb_encrypt,%function .align 4 vpaes_ecb_encrypt: stp x29,x30,[sp,#-16]! add x29,sp,#0 stp d8,d9,[sp,#-16]! // ABI spec says so stp d10,d11,[sp,#-16]! stp d12,d13,[sp,#-16]! stp d14,d15,[sp,#-16]! mov x17, $len mov x2, $key bl _vpaes_encrypt_preheat tst x17, #16 b.eq .Lecb_enc_loop ld1 {v7.16b}, [$inp],#16 bl _vpaes_encrypt_core st1 {v0.16b}, [$out],#16 subs x17, x17, #16 b.ls .Lecb_enc_done .align 4 .Lecb_enc_loop: ld1 {v14.16b,v15.16b}, [$inp], #32 bl _vpaes_encrypt_2x st1 {v0.16b,v1.16b}, [$out], #32 subs x17, x17, #32 b.hi .Lecb_enc_loop .Lecb_enc_done: ldp d14,d15,[sp],#16 ldp d12,d13,[sp],#16 ldp d10,d11,[sp],#16 ldp d8,d9,[sp],#16 ldp x29,x30,[sp],#16 ret .size vpaes_ecb_encrypt,.-vpaes_ecb_encrypt .globl vpaes_ecb_decrypt .type vpaes_ecb_decrypt,%function .align 4 vpaes_ecb_decrypt: stp x29,x30,[sp,#-16]! add x29,sp,#0 stp d8,d9,[sp,#-16]! // ABI spec says so stp d10,d11,[sp,#-16]! stp d12,d13,[sp,#-16]! stp d14,d15,[sp,#-16]! mov x17, $len mov x2, $key bl _vpaes_decrypt_preheat tst x17, #16 b.eq .Lecb_dec_loop ld1 {v7.16b}, [$inp],#16 bl _vpaes_encrypt_core st1 {v0.16b}, [$out],#16 subs x17, x17, #16 b.ls .Lecb_dec_done .align 4 .Lecb_dec_loop: ld1 {v14.16b,v15.16b}, [$inp], #32 bl _vpaes_decrypt_2x st1 {v0.16b,v1.16b}, [$out], #32 subs x17, x17, #32 b.hi .Lecb_dec_loop .Lecb_dec_done: ldp d14,d15,[sp],#16 ldp d12,d13,[sp],#16 ldp d10,d11,[sp],#16 ldp d8,d9,[sp],#16 ldp x29,x30,[sp],#16 ret .size vpaes_ecb_decrypt,.-vpaes_ecb_decrypt ___ } my ($ctr, $ctr_tmp) = ("w6", "w7"); # void vpaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len, # const AES_KEY *key, const uint8_t ivec[16]); $code.=<<___; .globl vpaes_ctr32_encrypt_blocks .type vpaes_ctr32_encrypt_blocks,%function .align 4 vpaes_ctr32_encrypt_blocks: stp x29,x30,[sp,#-16]! add x29,sp,#0 stp d8,d9,[sp,#-16]! // ABI spec says so stp d10,d11,[sp,#-16]! stp d12,d13,[sp,#-16]! stp d14,d15,[sp,#-16]! cbz $len, .Lctr32_done // Note, unlike the other functions, $len here is measured in blocks, // not bytes. mov x17, $len mov x2, $key // Load the IV and counter portion. ldr $ctr, [$ivec, #12] ld1 {v7.16b}, [$ivec] bl _vpaes_encrypt_preheat tst x17, #1 rev $ctr, $ctr // The counter is big-endian. b.eq .Lctr32_prep_loop // Handle one block so the remaining block count is even for // _vpaes_encrypt_2x. ld1 {v6.16b}, [$inp], #16 // Load input ahead of time bl _vpaes_encrypt_core eor v0.16b, v0.16b, v6.16b // XOR input and result st1 {v0.16b}, [$out], #16 subs x17, x17, #1 // Update the counter. add $ctr, $ctr, #1 rev $ctr_tmp, $ctr mov v7.s[3], $ctr_tmp b.ls .Lctr32_done .Lctr32_prep_loop: // _vpaes_encrypt_core takes its input from v7, while _vpaes_encrypt_2x // uses v14 and v15. mov v15.16b, v7.16b mov v14.16b, v7.16b add $ctr, $ctr, #1 rev $ctr_tmp, $ctr mov v15.s[3], $ctr_tmp .Lctr32_loop: ld1 {v6.16b,v7.16b}, [$inp], #32 // Load input ahead of time bl _vpaes_encrypt_2x eor v0.16b, v0.16b, v6.16b // XOR input and result eor v1.16b, v1.16b, v7.16b // XOR input and result (#2) st1 {v0.16b,v1.16b}, [$out], #32 subs x17, x17, #2 // Update the counter. add $ctr_tmp, $ctr, #1 add $ctr, $ctr, #2 rev $ctr_tmp, $ctr_tmp mov v14.s[3], $ctr_tmp rev $ctr_tmp, $ctr mov v15.s[3], $ctr_tmp b.hi .Lctr32_loop .Lctr32_done: ldp d14,d15,[sp],#16 ldp d12,d13,[sp],#16 ldp d10,d11,[sp],#16 ldp d8,d9,[sp],#16 ldp x29,x30,[sp],#16 ret .size vpaes_ctr32_encrypt_blocks,.-vpaes_ctr32_encrypt_blocks ___ } print $code; close STDOUT;