| #! /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; |
