mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 04:55:14 +07:00
1022 lines
21 KiB
ArmAsm
1022 lines
21 KiB
ArmAsm
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/*
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* Bit sliced AES using NEON instructions
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*
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* Copyright (C) 2017 Linaro Ltd.
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* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* The algorithm implemented here is described in detail by the paper
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* 'Faster and Timing-Attack Resistant AES-GCM' by Emilia Kaesper and
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* Peter Schwabe (https://eprint.iacr.org/2009/129.pdf)
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*
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* This implementation is based primarily on the OpenSSL implementation
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* for 32-bit ARM written by Andy Polyakov <appro@openssl.org>
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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.text
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.fpu neon
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rounds .req ip
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bskey .req r4
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q0l .req d0
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q0h .req d1
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q1l .req d2
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q1h .req d3
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q2l .req d4
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q2h .req d5
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q3l .req d6
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q3h .req d7
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q4l .req d8
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q4h .req d9
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q5l .req d10
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q5h .req d11
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q6l .req d12
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q6h .req d13
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q7l .req d14
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q7h .req d15
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q8l .req d16
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q8h .req d17
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q9l .req d18
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q9h .req d19
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q10l .req d20
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q10h .req d21
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q11l .req d22
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q11h .req d23
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q12l .req d24
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q12h .req d25
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q13l .req d26
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q13h .req d27
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q14l .req d28
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q14h .req d29
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q15l .req d30
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q15h .req d31
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.macro __tbl, out, tbl, in, tmp
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.ifc \out, \tbl
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.ifb \tmp
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.error __tbl needs temp register if out == tbl
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.endif
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vmov \tmp, \out
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.endif
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vtbl.8 \out\()l, {\tbl}, \in\()l
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.ifc \out, \tbl
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vtbl.8 \out\()h, {\tmp}, \in\()h
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.else
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vtbl.8 \out\()h, {\tbl}, \in\()h
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.endif
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.endm
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.macro __ldr, out, sym
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vldr \out\()l, \sym
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vldr \out\()h, \sym + 8
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.endm
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.macro __adr, reg, lbl
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adr \reg, \lbl
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THUMB( orr \reg, \reg, #1 )
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.endm
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.macro in_bs_ch, b0, b1, b2, b3, b4, b5, b6, b7
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veor \b2, \b2, \b1
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veor \b5, \b5, \b6
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veor \b3, \b3, \b0
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veor \b6, \b6, \b2
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veor \b5, \b5, \b0
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veor \b6, \b6, \b3
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veor \b3, \b3, \b7
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veor \b7, \b7, \b5
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veor \b3, \b3, \b4
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veor \b4, \b4, \b5
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veor \b2, \b2, \b7
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veor \b3, \b3, \b1
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veor \b1, \b1, \b5
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.endm
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.macro out_bs_ch, b0, b1, b2, b3, b4, b5, b6, b7
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veor \b0, \b0, \b6
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veor \b1, \b1, \b4
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veor \b4, \b4, \b6
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veor \b2, \b2, \b0
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veor \b6, \b6, \b1
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veor \b1, \b1, \b5
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veor \b5, \b5, \b3
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veor \b3, \b3, \b7
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veor \b7, \b7, \b5
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veor \b2, \b2, \b5
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veor \b4, \b4, \b7
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.endm
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.macro inv_in_bs_ch, b6, b1, b2, b4, b7, b0, b3, b5
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veor \b1, \b1, \b7
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veor \b4, \b4, \b7
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veor \b7, \b7, \b5
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veor \b1, \b1, \b3
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veor \b2, \b2, \b5
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veor \b3, \b3, \b7
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veor \b6, \b6, \b1
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veor \b2, \b2, \b0
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veor \b5, \b5, \b3
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veor \b4, \b4, \b6
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veor \b0, \b0, \b6
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veor \b1, \b1, \b4
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.endm
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.macro inv_out_bs_ch, b6, b5, b0, b3, b7, b1, b4, b2
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veor \b1, \b1, \b5
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veor \b2, \b2, \b7
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veor \b3, \b3, \b1
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veor \b4, \b4, \b5
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veor \b7, \b7, \b5
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veor \b3, \b3, \b4
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veor \b5, \b5, \b0
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veor \b3, \b3, \b7
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veor \b6, \b6, \b2
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veor \b2, \b2, \b1
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veor \b6, \b6, \b3
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veor \b3, \b3, \b0
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veor \b5, \b5, \b6
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.endm
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.macro mul_gf4, x0, x1, y0, y1, t0, t1
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veor \t0, \y0, \y1
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vand \t0, \t0, \x0
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veor \x0, \x0, \x1
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vand \t1, \x1, \y0
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vand \x0, \x0, \y1
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veor \x1, \t1, \t0
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veor \x0, \x0, \t1
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.endm
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.macro mul_gf4_n_gf4, x0, x1, y0, y1, t0, x2, x3, y2, y3, t1
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veor \t0, \y0, \y1
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veor \t1, \y2, \y3
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vand \t0, \t0, \x0
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vand \t1, \t1, \x2
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veor \x0, \x0, \x1
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veor \x2, \x2, \x3
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vand \x1, \x1, \y0
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vand \x3, \x3, \y2
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vand \x0, \x0, \y1
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vand \x2, \x2, \y3
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veor \x1, \x1, \x0
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veor \x2, \x2, \x3
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veor \x0, \x0, \t0
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veor \x3, \x3, \t1
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.endm
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.macro mul_gf16_2, x0, x1, x2, x3, x4, x5, x6, x7, \
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y0, y1, y2, y3, t0, t1, t2, t3
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veor \t0, \x0, \x2
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veor \t1, \x1, \x3
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mul_gf4 \x0, \x1, \y0, \y1, \t2, \t3
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veor \y0, \y0, \y2
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veor \y1, \y1, \y3
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mul_gf4_n_gf4 \t0, \t1, \y0, \y1, \t3, \x2, \x3, \y2, \y3, \t2
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veor \x0, \x0, \t0
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veor \x2, \x2, \t0
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veor \x1, \x1, \t1
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veor \x3, \x3, \t1
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veor \t0, \x4, \x6
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veor \t1, \x5, \x7
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mul_gf4_n_gf4 \t0, \t1, \y0, \y1, \t3, \x6, \x7, \y2, \y3, \t2
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veor \y0, \y0, \y2
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veor \y1, \y1, \y3
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mul_gf4 \x4, \x5, \y0, \y1, \t2, \t3
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veor \x4, \x4, \t0
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veor \x6, \x6, \t0
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veor \x5, \x5, \t1
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veor \x7, \x7, \t1
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.endm
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.macro inv_gf256, x0, x1, x2, x3, x4, x5, x6, x7, \
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t0, t1, t2, t3, s0, s1, s2, s3
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veor \t3, \x4, \x6
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veor \t0, \x5, \x7
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veor \t1, \x1, \x3
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veor \s1, \x7, \x6
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veor \s0, \x0, \x2
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veor \s3, \t3, \t0
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vorr \t2, \t0, \t1
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vand \s2, \t3, \s0
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vorr \t3, \t3, \s0
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veor \s0, \s0, \t1
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vand \t0, \t0, \t1
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veor \t1, \x3, \x2
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vand \s3, \s3, \s0
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vand \s1, \s1, \t1
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veor \t1, \x4, \x5
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veor \s0, \x1, \x0
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veor \t3, \t3, \s1
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veor \t2, \t2, \s1
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vand \s1, \t1, \s0
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vorr \t1, \t1, \s0
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veor \t3, \t3, \s3
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veor \t0, \t0, \s1
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veor \t2, \t2, \s2
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veor \t1, \t1, \s3
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veor \t0, \t0, \s2
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vand \s0, \x7, \x3
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veor \t1, \t1, \s2
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vand \s1, \x6, \x2
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vand \s2, \x5, \x1
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vorr \s3, \x4, \x0
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veor \t3, \t3, \s0
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veor \t1, \t1, \s2
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veor \s0, \t0, \s3
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veor \t2, \t2, \s1
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vand \s2, \t3, \t1
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veor \s1, \t2, \s2
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veor \s3, \s0, \s2
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vbsl \s1, \t1, \s0
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vmvn \t0, \s0
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vbsl \s0, \s1, \s3
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vbsl \t0, \s1, \s3
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vbsl \s3, \t3, \t2
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veor \t3, \t3, \t2
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vand \s2, \s0, \s3
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veor \t1, \t1, \t0
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veor \s2, \s2, \t3
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mul_gf16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \
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\s3, \s2, \s1, \t1, \s0, \t0, \t2, \t3
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.endm
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.macro sbox, b0, b1, b2, b3, b4, b5, b6, b7, \
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t0, t1, t2, t3, s0, s1, s2, s3
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in_bs_ch \b0, \b1, \b2, \b3, \b4, \b5, \b6, \b7
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inv_gf256 \b6, \b5, \b0, \b3, \b7, \b1, \b4, \b2, \
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\t0, \t1, \t2, \t3, \s0, \s1, \s2, \s3
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out_bs_ch \b7, \b1, \b4, \b2, \b6, \b5, \b0, \b3
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.endm
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.macro inv_sbox, b0, b1, b2, b3, b4, b5, b6, b7, \
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t0, t1, t2, t3, s0, s1, s2, s3
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inv_in_bs_ch \b0, \b1, \b2, \b3, \b4, \b5, \b6, \b7
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inv_gf256 \b5, \b1, \b2, \b6, \b3, \b7, \b0, \b4, \
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\t0, \t1, \t2, \t3, \s0, \s1, \s2, \s3
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inv_out_bs_ch \b3, \b7, \b0, \b4, \b5, \b1, \b2, \b6
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.endm
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||
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||
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.macro shift_rows, x0, x1, x2, x3, x4, x5, x6, x7, \
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t0, t1, t2, t3, mask
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vld1.8 {\t0-\t1}, [bskey, :256]!
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veor \t0, \t0, \x0
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vld1.8 {\t2-\t3}, [bskey, :256]!
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veor \t1, \t1, \x1
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__tbl \x0, \t0, \mask
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veor \t2, \t2, \x2
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__tbl \x1, \t1, \mask
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vld1.8 {\t0-\t1}, [bskey, :256]!
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veor \t3, \t3, \x3
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__tbl \x2, \t2, \mask
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__tbl \x3, \t3, \mask
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||
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vld1.8 {\t2-\t3}, [bskey, :256]!
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||
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veor \t0, \t0, \x4
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veor \t1, \t1, \x5
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__tbl \x4, \t0, \mask
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veor \t2, \t2, \x6
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__tbl \x5, \t1, \mask
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||
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veor \t3, \t3, \x7
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__tbl \x6, \t2, \mask
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||
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__tbl \x7, \t3, \mask
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||
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|
.endm
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||
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|
||
|
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.macro inv_shift_rows, x0, x1, x2, x3, x4, x5, x6, x7, \
|
||
|
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t0, t1, t2, t3, mask
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||
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__tbl \x0, \x0, \mask, \t0
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||
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__tbl \x1, \x1, \mask, \t1
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||
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__tbl \x2, \x2, \mask, \t2
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||
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__tbl \x3, \x3, \mask, \t3
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||
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__tbl \x4, \x4, \mask, \t0
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||
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__tbl \x5, \x5, \mask, \t1
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||
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__tbl \x6, \x6, \mask, \t2
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||
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__tbl \x7, \x7, \mask, \t3
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||
|
|
.endm
|
||
|
|
|
||
|
|
.macro mix_cols, x0, x1, x2, x3, x4, x5, x6, x7, \
|
||
|
|
t0, t1, t2, t3, t4, t5, t6, t7, inv
|
||
|
|
vext.8 \t0, \x0, \x0, #12
|
||
|
|
vext.8 \t1, \x1, \x1, #12
|
||
|
|
veor \x0, \x0, \t0
|
||
|
|
vext.8 \t2, \x2, \x2, #12
|
||
|
|
veor \x1, \x1, \t1
|
||
|
|
vext.8 \t3, \x3, \x3, #12
|
||
|
|
veor \x2, \x2, \t2
|
||
|
|
vext.8 \t4, \x4, \x4, #12
|
||
|
|
veor \x3, \x3, \t3
|
||
|
|
vext.8 \t5, \x5, \x5, #12
|
||
|
|
veor \x4, \x4, \t4
|
||
|
|
vext.8 \t6, \x6, \x6, #12
|
||
|
|
veor \x5, \x5, \t5
|
||
|
|
vext.8 \t7, \x7, \x7, #12
|
||
|
|
veor \x6, \x6, \t6
|
||
|
|
veor \t1, \t1, \x0
|
||
|
|
veor.8 \x7, \x7, \t7
|
||
|
|
vext.8 \x0, \x0, \x0, #8
|
||
|
|
veor \t2, \t2, \x1
|
||
|
|
veor \t0, \t0, \x7
|
||
|
|
veor \t1, \t1, \x7
|
||
|
|
vext.8 \x1, \x1, \x1, #8
|
||
|
|
veor \t5, \t5, \x4
|
||
|
|
veor \x0, \x0, \t0
|
||
|
|
veor \t6, \t6, \x5
|
||
|
|
veor \x1, \x1, \t1
|
||
|
|
vext.8 \t0, \x4, \x4, #8
|
||
|
|
veor \t4, \t4, \x3
|
||
|
|
vext.8 \t1, \x5, \x5, #8
|
||
|
|
veor \t7, \t7, \x6
|
||
|
|
vext.8 \x4, \x3, \x3, #8
|
||
|
|
veor \t3, \t3, \x2
|
||
|
|
vext.8 \x5, \x7, \x7, #8
|
||
|
|
veor \t4, \t4, \x7
|
||
|
|
vext.8 \x3, \x6, \x6, #8
|
||
|
|
veor \t3, \t3, \x7
|
||
|
|
vext.8 \x6, \x2, \x2, #8
|
||
|
|
veor \x7, \t1, \t5
|
||
|
|
.ifb \inv
|
||
|
|
veor \x2, \t0, \t4
|
||
|
|
veor \x4, \x4, \t3
|
||
|
|
veor \x5, \x5, \t7
|
||
|
|
veor \x3, \x3, \t6
|
||
|
|
veor \x6, \x6, \t2
|
||
|
|
.else
|
||
|
|
veor \t3, \t3, \x4
|
||
|
|
veor \x5, \x5, \t7
|
||
|
|
veor \x2, \x3, \t6
|
||
|
|
veor \x3, \t0, \t4
|
||
|
|
veor \x4, \x6, \t2
|
||
|
|
vmov \x6, \t3
|
||
|
|
.endif
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro inv_mix_cols, x0, x1, x2, x3, x4, x5, x6, x7, \
|
||
|
|
t0, t1, t2, t3, t4, t5, t6, t7
|
||
|
|
vld1.8 {\t0-\t1}, [bskey, :256]!
|
||
|
|
veor \x0, \x0, \t0
|
||
|
|
vld1.8 {\t2-\t3}, [bskey, :256]!
|
||
|
|
veor \x1, \x1, \t1
|
||
|
|
vld1.8 {\t4-\t5}, [bskey, :256]!
|
||
|
|
veor \x2, \x2, \t2
|
||
|
|
vld1.8 {\t6-\t7}, [bskey, :256]
|
||
|
|
sub bskey, bskey, #224
|
||
|
|
veor \x3, \x3, \t3
|
||
|
|
veor \x4, \x4, \t4
|
||
|
|
veor \x5, \x5, \t5
|
||
|
|
veor \x6, \x6, \t6
|
||
|
|
veor \x7, \x7, \t7
|
||
|
|
vext.8 \t0, \x0, \x0, #8
|
||
|
|
vext.8 \t6, \x6, \x6, #8
|
||
|
|
vext.8 \t7, \x7, \x7, #8
|
||
|
|
veor \t0, \t0, \x0
|
||
|
|
vext.8 \t1, \x1, \x1, #8
|
||
|
|
veor \t6, \t6, \x6
|
||
|
|
vext.8 \t2, \x2, \x2, #8
|
||
|
|
veor \t7, \t7, \x7
|
||
|
|
vext.8 \t3, \x3, \x3, #8
|
||
|
|
veor \t1, \t1, \x1
|
||
|
|
vext.8 \t4, \x4, \x4, #8
|
||
|
|
veor \t2, \t2, \x2
|
||
|
|
vext.8 \t5, \x5, \x5, #8
|
||
|
|
veor \t3, \t3, \x3
|
||
|
|
veor \t4, \t4, \x4
|
||
|
|
veor \t5, \t5, \x5
|
||
|
|
veor \x0, \x0, \t6
|
||
|
|
veor \x1, \x1, \t6
|
||
|
|
veor \x2, \x2, \t0
|
||
|
|
veor \x4, \x4, \t2
|
||
|
|
veor \x3, \x3, \t1
|
||
|
|
veor \x1, \x1, \t7
|
||
|
|
veor \x2, \x2, \t7
|
||
|
|
veor \x4, \x4, \t6
|
||
|
|
veor \x5, \x5, \t3
|
||
|
|
veor \x3, \x3, \t6
|
||
|
|
veor \x6, \x6, \t4
|
||
|
|
veor \x4, \x4, \t7
|
||
|
|
veor \x5, \x5, \t7
|
||
|
|
veor \x7, \x7, \t5
|
||
|
|
mix_cols \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \
|
||
|
|
\t0, \t1, \t2, \t3, \t4, \t5, \t6, \t7, 1
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro swapmove_2x, a0, b0, a1, b1, n, mask, t0, t1
|
||
|
|
vshr.u64 \t0, \b0, #\n
|
||
|
|
vshr.u64 \t1, \b1, #\n
|
||
|
|
veor \t0, \t0, \a0
|
||
|
|
veor \t1, \t1, \a1
|
||
|
|
vand \t0, \t0, \mask
|
||
|
|
vand \t1, \t1, \mask
|
||
|
|
veor \a0, \a0, \t0
|
||
|
|
vshl.s64 \t0, \t0, #\n
|
||
|
|
veor \a1, \a1, \t1
|
||
|
|
vshl.s64 \t1, \t1, #\n
|
||
|
|
veor \b0, \b0, \t0
|
||
|
|
veor \b1, \b1, \t1
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.macro bitslice, x7, x6, x5, x4, x3, x2, x1, x0, t0, t1, t2, t3
|
||
|
|
vmov.i8 \t0, #0x55
|
||
|
|
vmov.i8 \t1, #0x33
|
||
|
|
swapmove_2x \x0, \x1, \x2, \x3, 1, \t0, \t2, \t3
|
||
|
|
swapmove_2x \x4, \x5, \x6, \x7, 1, \t0, \t2, \t3
|
||
|
|
vmov.i8 \t0, #0x0f
|
||
|
|
swapmove_2x \x0, \x2, \x1, \x3, 2, \t1, \t2, \t3
|
||
|
|
swapmove_2x \x4, \x6, \x5, \x7, 2, \t1, \t2, \t3
|
||
|
|
swapmove_2x \x0, \x4, \x1, \x5, 4, \t0, \t2, \t3
|
||
|
|
swapmove_2x \x2, \x6, \x3, \x7, 4, \t0, \t2, \t3
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
M0: .quad 0x02060a0e03070b0f, 0x0004080c0105090d
|
||
|
|
|
||
|
|
/*
|
||
|
|
* void aesbs_convert_key(u8 out[], u32 const rk[], int rounds)
|
||
|
|
*/
|
||
|
|
ENTRY(aesbs_convert_key)
|
||
|
|
vld1.32 {q7}, [r1]! // load round 0 key
|
||
|
|
vld1.32 {q15}, [r1]! // load round 1 key
|
||
|
|
|
||
|
|
vmov.i8 q8, #0x01 // bit masks
|
||
|
|
vmov.i8 q9, #0x02
|
||
|
|
vmov.i8 q10, #0x04
|
||
|
|
vmov.i8 q11, #0x08
|
||
|
|
vmov.i8 q12, #0x10
|
||
|
|
vmov.i8 q13, #0x20
|
||
|
|
__ldr q14, M0
|
||
|
|
|
||
|
|
sub r2, r2, #1
|
||
|
|
vst1.8 {q7}, [r0, :128]! // save round 0 key
|
||
|
|
|
||
|
|
.Lkey_loop:
|
||
|
|
__tbl q7, q15, q14
|
||
|
|
vmov.i8 q6, #0x40
|
||
|
|
vmov.i8 q15, #0x80
|
||
|
|
|
||
|
|
vtst.8 q0, q7, q8
|
||
|
|
vtst.8 q1, q7, q9
|
||
|
|
vtst.8 q2, q7, q10
|
||
|
|
vtst.8 q3, q7, q11
|
||
|
|
vtst.8 q4, q7, q12
|
||
|
|
vtst.8 q5, q7, q13
|
||
|
|
vtst.8 q6, q7, q6
|
||
|
|
vtst.8 q7, q7, q15
|
||
|
|
vld1.32 {q15}, [r1]! // load next round key
|
||
|
|
vmvn q0, q0
|
||
|
|
vmvn q1, q1
|
||
|
|
vmvn q5, q5
|
||
|
|
vmvn q6, q6
|
||
|
|
|
||
|
|
subs r2, r2, #1
|
||
|
|
vst1.8 {q0-q1}, [r0, :256]!
|
||
|
|
vst1.8 {q2-q3}, [r0, :256]!
|
||
|
|
vst1.8 {q4-q5}, [r0, :256]!
|
||
|
|
vst1.8 {q6-q7}, [r0, :256]!
|
||
|
|
bne .Lkey_loop
|
||
|
|
|
||
|
|
vmov.i8 q7, #0x63 // compose .L63
|
||
|
|
veor q15, q15, q7
|
||
|
|
vst1.8 {q15}, [r0, :128]
|
||
|
|
bx lr
|
||
|
|
ENDPROC(aesbs_convert_key)
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
M0SR: .quad 0x0a0e02060f03070b, 0x0004080c05090d01
|
||
|
|
|
||
|
|
aesbs_encrypt8:
|
||
|
|
vld1.8 {q9}, [bskey, :128]! // round 0 key
|
||
|
|
__ldr q8, M0SR
|
||
|
|
|
||
|
|
veor q10, q0, q9 // xor with round0 key
|
||
|
|
veor q11, q1, q9
|
||
|
|
__tbl q0, q10, q8
|
||
|
|
veor q12, q2, q9
|
||
|
|
__tbl q1, q11, q8
|
||
|
|
veor q13, q3, q9
|
||
|
|
__tbl q2, q12, q8
|
||
|
|
veor q14, q4, q9
|
||
|
|
__tbl q3, q13, q8
|
||
|
|
veor q15, q5, q9
|
||
|
|
__tbl q4, q14, q8
|
||
|
|
veor q10, q6, q9
|
||
|
|
__tbl q5, q15, q8
|
||
|
|
veor q11, q7, q9
|
||
|
|
__tbl q6, q10, q8
|
||
|
|
__tbl q7, q11, q8
|
||
|
|
|
||
|
|
bitslice q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11
|
||
|
|
|
||
|
|
sub rounds, rounds, #1
|
||
|
|
b .Lenc_sbox
|
||
|
|
|
||
|
|
.align 5
|
||
|
|
SR: .quad 0x0504070600030201, 0x0f0e0d0c0a09080b
|
||
|
|
SRM0: .quad 0x0304090e00050a0f, 0x01060b0c0207080d
|
||
|
|
|
||
|
|
.Lenc_last:
|
||
|
|
__ldr q12, SRM0
|
||
|
|
.Lenc_loop:
|
||
|
|
shift_rows q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11, q12
|
||
|
|
.Lenc_sbox:
|
||
|
|
sbox q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11, q12, \
|
||
|
|
q13, q14, q15
|
||
|
|
subs rounds, rounds, #1
|
||
|
|
bcc .Lenc_done
|
||
|
|
|
||
|
|
mix_cols q0, q1, q4, q6, q3, q7, q2, q5, q8, q9, q10, q11, q12, \
|
||
|
|
q13, q14, q15
|
||
|
|
|
||
|
|
beq .Lenc_last
|
||
|
|
__ldr q12, SR
|
||
|
|
b .Lenc_loop
|
||
|
|
|
||
|
|
.Lenc_done:
|
||
|
|
vld1.8 {q12}, [bskey, :128] // last round key
|
||
|
|
|
||
|
|
bitslice q0, q1, q4, q6, q3, q7, q2, q5, q8, q9, q10, q11
|
||
|
|
|
||
|
|
veor q0, q0, q12
|
||
|
|
veor q1, q1, q12
|
||
|
|
veor q4, q4, q12
|
||
|
|
veor q6, q6, q12
|
||
|
|
veor q3, q3, q12
|
||
|
|
veor q7, q7, q12
|
||
|
|
veor q2, q2, q12
|
||
|
|
veor q5, q5, q12
|
||
|
|
bx lr
|
||
|
|
ENDPROC(aesbs_encrypt8)
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
M0ISR: .quad 0x0a0e0206070b0f03, 0x0004080c0d010509
|
||
|
|
|
||
|
|
aesbs_decrypt8:
|
||
|
|
add bskey, bskey, rounds, lsl #7
|
||
|
|
sub bskey, bskey, #112
|
||
|
|
vld1.8 {q9}, [bskey, :128] // round 0 key
|
||
|
|
sub bskey, bskey, #128
|
||
|
|
__ldr q8, M0ISR
|
||
|
|
|
||
|
|
veor q10, q0, q9 // xor with round0 key
|
||
|
|
veor q11, q1, q9
|
||
|
|
__tbl q0, q10, q8
|
||
|
|
veor q12, q2, q9
|
||
|
|
__tbl q1, q11, q8
|
||
|
|
veor q13, q3, q9
|
||
|
|
__tbl q2, q12, q8
|
||
|
|
veor q14, q4, q9
|
||
|
|
__tbl q3, q13, q8
|
||
|
|
veor q15, q5, q9
|
||
|
|
__tbl q4, q14, q8
|
||
|
|
veor q10, q6, q9
|
||
|
|
__tbl q5, q15, q8
|
||
|
|
veor q11, q7, q9
|
||
|
|
__tbl q6, q10, q8
|
||
|
|
__tbl q7, q11, q8
|
||
|
|
|
||
|
|
bitslice q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11
|
||
|
|
|
||
|
|
sub rounds, rounds, #1
|
||
|
|
b .Ldec_sbox
|
||
|
|
|
||
|
|
.align 5
|
||
|
|
ISR: .quad 0x0504070602010003, 0x0f0e0d0c080b0a09
|
||
|
|
ISRM0: .quad 0x01040b0e0205080f, 0x0306090c00070a0d
|
||
|
|
|
||
|
|
.Ldec_last:
|
||
|
|
__ldr q12, ISRM0
|
||
|
|
.Ldec_loop:
|
||
|
|
inv_shift_rows q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11, q12
|
||
|
|
.Ldec_sbox:
|
||
|
|
inv_sbox q0, q1, q2, q3, q4, q5, q6, q7, q8, q9, q10, q11, q12, \
|
||
|
|
q13, q14, q15
|
||
|
|
subs rounds, rounds, #1
|
||
|
|
bcc .Ldec_done
|
||
|
|
|
||
|
|
inv_mix_cols q0, q1, q6, q4, q2, q7, q3, q5, q8, q9, q10, q11, q12, \
|
||
|
|
q13, q14, q15
|
||
|
|
|
||
|
|
beq .Ldec_last
|
||
|
|
__ldr q12, ISR
|
||
|
|
b .Ldec_loop
|
||
|
|
|
||
|
|
.Ldec_done:
|
||
|
|
add bskey, bskey, #112
|
||
|
|
vld1.8 {q12}, [bskey, :128] // last round key
|
||
|
|
|
||
|
|
bitslice q0, q1, q6, q4, q2, q7, q3, q5, q8, q9, q10, q11
|
||
|
|
|
||
|
|
veor q0, q0, q12
|
||
|
|
veor q1, q1, q12
|
||
|
|
veor q6, q6, q12
|
||
|
|
veor q4, q4, q12
|
||
|
|
veor q2, q2, q12
|
||
|
|
veor q7, q7, q12
|
||
|
|
veor q3, q3, q12
|
||
|
|
veor q5, q5, q12
|
||
|
|
bx lr
|
||
|
|
ENDPROC(aesbs_decrypt8)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* aesbs_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
|
||
|
|
* int blocks)
|
||
|
|
* aesbs_ecb_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
|
||
|
|
* int blocks)
|
||
|
|
*/
|
||
|
|
.macro __ecb_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7
|
||
|
|
push {r4-r6, lr}
|
||
|
|
ldr r5, [sp, #16] // number of blocks
|
||
|
|
|
||
|
|
99: __adr ip, 0f
|
||
|
|
and lr, r5, #7
|
||
|
|
cmp r5, #8
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vld1.8 {q0}, [r1]!
|
||
|
|
vld1.8 {q1}, [r1]!
|
||
|
|
vld1.8 {q2}, [r1]!
|
||
|
|
vld1.8 {q3}, [r1]!
|
||
|
|
vld1.8 {q4}, [r1]!
|
||
|
|
vld1.8 {q5}, [r1]!
|
||
|
|
vld1.8 {q6}, [r1]!
|
||
|
|
vld1.8 {q7}, [r1]!
|
||
|
|
|
||
|
|
0: mov bskey, r2
|
||
|
|
mov rounds, r3
|
||
|
|
bl \do8
|
||
|
|
|
||
|
|
__adr ip, 1f
|
||
|
|
and lr, r5, #7
|
||
|
|
cmp r5, #8
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vst1.8 {\o0}, [r0]!
|
||
|
|
vst1.8 {\o1}, [r0]!
|
||
|
|
vst1.8 {\o2}, [r0]!
|
||
|
|
vst1.8 {\o3}, [r0]!
|
||
|
|
vst1.8 {\o4}, [r0]!
|
||
|
|
vst1.8 {\o5}, [r0]!
|
||
|
|
vst1.8 {\o6}, [r0]!
|
||
|
|
vst1.8 {\o7}, [r0]!
|
||
|
|
|
||
|
|
1: subs r5, r5, #8
|
||
|
|
bgt 99b
|
||
|
|
|
||
|
|
pop {r4-r6, pc}
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
ENTRY(aesbs_ecb_encrypt)
|
||
|
|
__ecb_crypt aesbs_encrypt8, q0, q1, q4, q6, q3, q7, q2, q5
|
||
|
|
ENDPROC(aesbs_ecb_encrypt)
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
ENTRY(aesbs_ecb_decrypt)
|
||
|
|
__ecb_crypt aesbs_decrypt8, q0, q1, q6, q4, q2, q7, q3, q5
|
||
|
|
ENDPROC(aesbs_ecb_decrypt)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* aesbs_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[],
|
||
|
|
* int rounds, int blocks, u8 iv[])
|
||
|
|
*/
|
||
|
|
.align 4
|
||
|
|
ENTRY(aesbs_cbc_decrypt)
|
||
|
|
mov ip, sp
|
||
|
|
push {r4-r6, lr}
|
||
|
|
ldm ip, {r5-r6} // load args 4-5
|
||
|
|
|
||
|
|
99: __adr ip, 0f
|
||
|
|
and lr, r5, #7
|
||
|
|
cmp r5, #8
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
mov lr, r1
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vld1.8 {q0}, [lr]!
|
||
|
|
vld1.8 {q1}, [lr]!
|
||
|
|
vld1.8 {q2}, [lr]!
|
||
|
|
vld1.8 {q3}, [lr]!
|
||
|
|
vld1.8 {q4}, [lr]!
|
||
|
|
vld1.8 {q5}, [lr]!
|
||
|
|
vld1.8 {q6}, [lr]!
|
||
|
|
vld1.8 {q7}, [lr]
|
||
|
|
|
||
|
|
0: mov bskey, r2
|
||
|
|
mov rounds, r3
|
||
|
|
bl aesbs_decrypt8
|
||
|
|
|
||
|
|
vld1.8 {q8}, [r6]
|
||
|
|
vmov q9, q8
|
||
|
|
vmov q10, q8
|
||
|
|
vmov q11, q8
|
||
|
|
vmov q12, q8
|
||
|
|
vmov q13, q8
|
||
|
|
vmov q14, q8
|
||
|
|
vmov q15, q8
|
||
|
|
|
||
|
|
__adr ip, 1f
|
||
|
|
and lr, r5, #7
|
||
|
|
cmp r5, #8
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vld1.8 {q9}, [r1]!
|
||
|
|
vld1.8 {q10}, [r1]!
|
||
|
|
vld1.8 {q11}, [r1]!
|
||
|
|
vld1.8 {q12}, [r1]!
|
||
|
|
vld1.8 {q13}, [r1]!
|
||
|
|
vld1.8 {q14}, [r1]!
|
||
|
|
vld1.8 {q15}, [r1]!
|
||
|
|
W(nop)
|
||
|
|
|
||
|
|
1: __adr ip, 2f
|
||
|
|
sub ip, ip, lr, lsl #3
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
veor q0, q0, q8
|
||
|
|
vst1.8 {q0}, [r0]!
|
||
|
|
veor q1, q1, q9
|
||
|
|
vst1.8 {q1}, [r0]!
|
||
|
|
veor q6, q6, q10
|
||
|
|
vst1.8 {q6}, [r0]!
|
||
|
|
veor q4, q4, q11
|
||
|
|
vst1.8 {q4}, [r0]!
|
||
|
|
veor q2, q2, q12
|
||
|
|
vst1.8 {q2}, [r0]!
|
||
|
|
veor q7, q7, q13
|
||
|
|
vst1.8 {q7}, [r0]!
|
||
|
|
veor q3, q3, q14
|
||
|
|
vst1.8 {q3}, [r0]!
|
||
|
|
veor q5, q5, q15
|
||
|
|
vld1.8 {q8}, [r1]! // load next round's iv
|
||
|
|
2: vst1.8 {q5}, [r0]!
|
||
|
|
|
||
|
|
subs r5, r5, #8
|
||
|
|
vst1.8 {q8}, [r6] // store next round's iv
|
||
|
|
bgt 99b
|
||
|
|
|
||
|
|
pop {r4-r6, pc}
|
||
|
|
ENDPROC(aesbs_cbc_decrypt)
|
||
|
|
|
||
|
|
.macro next_ctr, q
|
||
|
|
vmov \q\()h[1], r10
|
||
|
|
adds r10, r10, #1
|
||
|
|
vmov \q\()h[0], r9
|
||
|
|
adcs r9, r9, #0
|
||
|
|
vmov \q\()l[1], r8
|
||
|
|
adcs r8, r8, #0
|
||
|
|
vmov \q\()l[0], r7
|
||
|
|
adc r7, r7, #0
|
||
|
|
vrev32.8 \q, \q
|
||
|
|
.endm
|
||
|
|
|
||
|
|
/*
|
||
|
|
* aesbs_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[],
|
||
|
|
* int rounds, int blocks, u8 ctr[], bool final)
|
||
|
|
*/
|
||
|
|
ENTRY(aesbs_ctr_encrypt)
|
||
|
|
mov ip, sp
|
||
|
|
push {r4-r10, lr}
|
||
|
|
|
||
|
|
ldm ip, {r5-r7} // load args 4-6
|
||
|
|
add r5, r5, r7 // one extra block if final == 1
|
||
|
|
|
||
|
|
vld1.8 {q0}, [r6] // load counter
|
||
|
|
vrev32.8 q1, q0
|
||
|
|
vmov r9, r10, d3
|
||
|
|
vmov r7, r8, d2
|
||
|
|
|
||
|
|
adds r10, r10, #1
|
||
|
|
adcs r9, r9, #0
|
||
|
|
adcs r8, r8, #0
|
||
|
|
adc r7, r7, #0
|
||
|
|
|
||
|
|
99: vmov q1, q0
|
||
|
|
vmov q2, q0
|
||
|
|
vmov q3, q0
|
||
|
|
vmov q4, q0
|
||
|
|
vmov q5, q0
|
||
|
|
vmov q6, q0
|
||
|
|
vmov q7, q0
|
||
|
|
|
||
|
|
__adr ip, 0f
|
||
|
|
sub lr, r5, #1
|
||
|
|
and lr, lr, #7
|
||
|
|
cmp r5, #8
|
||
|
|
sub ip, ip, lr, lsl #5
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
next_ctr q1
|
||
|
|
next_ctr q2
|
||
|
|
next_ctr q3
|
||
|
|
next_ctr q4
|
||
|
|
next_ctr q5
|
||
|
|
next_ctr q6
|
||
|
|
next_ctr q7
|
||
|
|
|
||
|
|
0: mov bskey, r2
|
||
|
|
mov rounds, r3
|
||
|
|
bl aesbs_encrypt8
|
||
|
|
|
||
|
|
__adr ip, 1f
|
||
|
|
and lr, r5, #7
|
||
|
|
cmp r5, #8
|
||
|
|
movgt r4, #0
|
||
|
|
ldrle r4, [sp, #40] // load final in the last round
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vld1.8 {q8}, [r1]!
|
||
|
|
vld1.8 {q9}, [r1]!
|
||
|
|
vld1.8 {q10}, [r1]!
|
||
|
|
vld1.8 {q11}, [r1]!
|
||
|
|
vld1.8 {q12}, [r1]!
|
||
|
|
vld1.8 {q13}, [r1]!
|
||
|
|
vld1.8 {q14}, [r1]!
|
||
|
|
teq r4, #0 // skip last block if 'final'
|
||
|
|
1: bne 2f
|
||
|
|
vld1.8 {q15}, [r1]!
|
||
|
|
|
||
|
|
2: __adr ip, 3f
|
||
|
|
cmp r5, #8
|
||
|
|
sub ip, ip, lr, lsl #3
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
veor q0, q0, q8
|
||
|
|
vst1.8 {q0}, [r0]!
|
||
|
|
veor q1, q1, q9
|
||
|
|
vst1.8 {q1}, [r0]!
|
||
|
|
veor q4, q4, q10
|
||
|
|
vst1.8 {q4}, [r0]!
|
||
|
|
veor q6, q6, q11
|
||
|
|
vst1.8 {q6}, [r0]!
|
||
|
|
veor q3, q3, q12
|
||
|
|
vst1.8 {q3}, [r0]!
|
||
|
|
veor q7, q7, q13
|
||
|
|
vst1.8 {q7}, [r0]!
|
||
|
|
veor q2, q2, q14
|
||
|
|
vst1.8 {q2}, [r0]!
|
||
|
|
teq r4, #0 // skip last block if 'final'
|
||
|
|
W(bne) 4f
|
||
|
|
3: veor q5, q5, q15
|
||
|
|
vst1.8 {q5}, [r0]!
|
||
|
|
|
||
|
|
next_ctr q0
|
||
|
|
|
||
|
|
subs r5, r5, #8
|
||
|
|
bgt 99b
|
||
|
|
|
||
|
|
vmov q5, q0
|
||
|
|
|
||
|
|
4: vst1.8 {q5}, [r6]
|
||
|
|
pop {r4-r10, pc}
|
||
|
|
ENDPROC(aesbs_ctr_encrypt)
|
||
|
|
|
||
|
|
.macro next_tweak, out, in, const, tmp
|
||
|
|
vshr.s64 \tmp, \in, #63
|
||
|
|
vand \tmp, \tmp, \const
|
||
|
|
vadd.u64 \out, \in, \in
|
||
|
|
vext.8 \tmp, \tmp, \tmp, #8
|
||
|
|
veor \out, \out, \tmp
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
.Lxts_mul_x:
|
||
|
|
.quad 1, 0x87
|
||
|
|
|
||
|
|
/*
|
||
|
|
* aesbs_xts_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
|
||
|
|
* int blocks, u8 iv[])
|
||
|
|
* aesbs_xts_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
|
||
|
|
* int blocks, u8 iv[])
|
||
|
|
*/
|
||
|
|
__xts_prepare8:
|
||
|
|
vld1.8 {q14}, [r7] // load iv
|
||
|
|
__ldr q15, .Lxts_mul_x // load tweak mask
|
||
|
|
vmov q12, q14
|
||
|
|
|
||
|
|
__adr ip, 0f
|
||
|
|
and r4, r6, #7
|
||
|
|
cmp r6, #8
|
||
|
|
sub ip, ip, r4, lsl #5
|
||
|
|
mov r4, sp
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vld1.8 {q0}, [r1]!
|
||
|
|
next_tweak q12, q14, q15, q13
|
||
|
|
veor q0, q0, q14
|
||
|
|
vst1.8 {q14}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q1}, [r1]!
|
||
|
|
next_tweak q14, q12, q15, q13
|
||
|
|
veor q1, q1, q12
|
||
|
|
vst1.8 {q12}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q2}, [r1]!
|
||
|
|
next_tweak q12, q14, q15, q13
|
||
|
|
veor q2, q2, q14
|
||
|
|
vst1.8 {q14}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q3}, [r1]!
|
||
|
|
next_tweak q14, q12, q15, q13
|
||
|
|
veor q3, q3, q12
|
||
|
|
vst1.8 {q12}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q4}, [r1]!
|
||
|
|
next_tweak q12, q14, q15, q13
|
||
|
|
veor q4, q4, q14
|
||
|
|
vst1.8 {q14}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q5}, [r1]!
|
||
|
|
next_tweak q14, q12, q15, q13
|
||
|
|
veor q5, q5, q12
|
||
|
|
vst1.8 {q12}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q6}, [r1]!
|
||
|
|
next_tweak q12, q14, q15, q13
|
||
|
|
veor q6, q6, q14
|
||
|
|
vst1.8 {q14}, [r4, :128]!
|
||
|
|
|
||
|
|
vld1.8 {q7}, [r1]!
|
||
|
|
next_tweak q14, q12, q15, q13
|
||
|
|
veor q7, q7, q12
|
||
|
|
vst1.8 {q12}, [r4, :128]
|
||
|
|
|
||
|
|
0: vst1.8 {q14}, [r7] // store next iv
|
||
|
|
bx lr
|
||
|
|
ENDPROC(__xts_prepare8)
|
||
|
|
|
||
|
|
.macro __xts_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7
|
||
|
|
push {r4-r8, lr}
|
||
|
|
mov r5, sp // preserve sp
|
||
|
|
ldrd r6, r7, [sp, #24] // get blocks and iv args
|
||
|
|
sub ip, sp, #128 // make room for 8x tweak
|
||
|
|
bic ip, ip, #0xf // align sp to 16 bytes
|
||
|
|
mov sp, ip
|
||
|
|
|
||
|
|
99: bl __xts_prepare8
|
||
|
|
|
||
|
|
mov bskey, r2
|
||
|
|
mov rounds, r3
|
||
|
|
bl \do8
|
||
|
|
|
||
|
|
__adr ip, 0f
|
||
|
|
and lr, r6, #7
|
||
|
|
cmp r6, #8
|
||
|
|
sub ip, ip, lr, lsl #2
|
||
|
|
mov r4, sp
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
vld1.8 {q8}, [r4, :128]!
|
||
|
|
vld1.8 {q9}, [r4, :128]!
|
||
|
|
vld1.8 {q10}, [r4, :128]!
|
||
|
|
vld1.8 {q11}, [r4, :128]!
|
||
|
|
vld1.8 {q12}, [r4, :128]!
|
||
|
|
vld1.8 {q13}, [r4, :128]!
|
||
|
|
vld1.8 {q14}, [r4, :128]!
|
||
|
|
vld1.8 {q15}, [r4, :128]
|
||
|
|
|
||
|
|
0: __adr ip, 1f
|
||
|
|
sub ip, ip, lr, lsl #3
|
||
|
|
bxlt ip // computed goto if blocks < 8
|
||
|
|
|
||
|
|
veor \o0, \o0, q8
|
||
|
|
vst1.8 {\o0}, [r0]!
|
||
|
|
veor \o1, \o1, q9
|
||
|
|
vst1.8 {\o1}, [r0]!
|
||
|
|
veor \o2, \o2, q10
|
||
|
|
vst1.8 {\o2}, [r0]!
|
||
|
|
veor \o3, \o3, q11
|
||
|
|
vst1.8 {\o3}, [r0]!
|
||
|
|
veor \o4, \o4, q12
|
||
|
|
vst1.8 {\o4}, [r0]!
|
||
|
|
veor \o5, \o5, q13
|
||
|
|
vst1.8 {\o5}, [r0]!
|
||
|
|
veor \o6, \o6, q14
|
||
|
|
vst1.8 {\o6}, [r0]!
|
||
|
|
veor \o7, \o7, q15
|
||
|
|
vst1.8 {\o7}, [r0]!
|
||
|
|
|
||
|
|
1: subs r6, r6, #8
|
||
|
|
bgt 99b
|
||
|
|
|
||
|
|
mov sp, r5
|
||
|
|
pop {r4-r8, pc}
|
||
|
|
.endm
|
||
|
|
|
||
|
|
ENTRY(aesbs_xts_encrypt)
|
||
|
|
__xts_crypt aesbs_encrypt8, q0, q1, q4, q6, q3, q7, q2, q5
|
||
|
|
ENDPROC(aesbs_xts_encrypt)
|
||
|
|
|
||
|
|
ENTRY(aesbs_xts_decrypt)
|
||
|
|
__xts_crypt aesbs_decrypt8, q0, q1, q6, q4, q2, q7, q3, q5
|
||
|
|
ENDPROC(aesbs_xts_decrypt)
|