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|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright(c) 2011-2016 Intel Corporation All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
; * Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; * Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in
; the documentation and/or other materials provided with the
; distribution.
; * Neither the name of Intel Corporation nor the names of its
; contributors may be used to endorse or promote products derived
; from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; XTS decrypt function with 256-bit AES
; input keys are not aligned
; keys are expanded in parallel with the tweak encryption
; plaintext and ciphertext are not aligned
; second key is stored in the stack as aligned to 16 Bytes
; first key is required only once, no need for storage of this key
%include "reg_sizes.asm"
default rel
%define TW rsp ; store 8 tweak values
%define keys rsp + 16*8 ; store 15 expanded keys
%ifidn __OUTPUT_FORMAT__, win64
%define _xmm rsp + 16*23 ; store xmm6:xmm15
%endif
%ifidn __OUTPUT_FORMAT__, elf64
%define _gpr rsp + 16*23 ; store rbx
%define VARIABLE_OFFSET 16*8 + 16*15 + 8*1 ; VARIABLE_OFFSET has to be an odd multiple of 8
%else
%define _gpr rsp + 16*33 ; store rdi, rsi, rbx
%define VARIABLE_OFFSET 16*8 + 16*15 + 16*10 + 8*3 ; VARIABLE_OFFSET has to be an odd multiple of 8
%endif
%define GHASH_POLY 0x87
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;void XTS_AES_256_dec_avx(
; UINT8 *k2, // key used for tweaking, 16*2 bytes
; UINT8 *k1, // key used for "ECB" encryption, 16*2 bytes
; UINT8 *TW_initial, // initial tweak value, 16 bytes
; UINT64 N, // sector size, in bytes
; const UINT8 *ct, // ciphertext sector input data
; UINT8 *pt); // plaintext sector output data
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; arguments for input parameters
%ifidn __OUTPUT_FORMAT__, elf64
%xdefine ptr_key2 rdi
%xdefine ptr_key1 rsi
%xdefine T_val rdx
%xdefine N_val rcx
%xdefine ptr_plaintext r8
%xdefine ptr_ciphertext r9
%else
%xdefine ptr_key2 rcx
%xdefine ptr_key1 rdx
%xdefine T_val r8
%xdefine N_val r9
%xdefine ptr_plaintext r10; [rsp + VARIABLE_OFFSET + 8*5]
%xdefine ptr_ciphertext r11; [rsp + VARIABLE_OFFSET + 8*6]
%endif
; arguments for temp parameters
%ifidn __OUTPUT_FORMAT__, elf64
%define tmp1 rdi
%define target_ptr_val rsi
%define ghash_poly_8b r10
%define ghash_poly_8b_temp r11
%else
%define tmp1 rcx
%define target_ptr_val rdx
%define ghash_poly_8b rdi
%define ghash_poly_8b_temp rsi
%endif
%define twtempl rax ; global temp registers used for tweak computation
%define twtemph rbx
; produce the key for the next round
; raw_key is the output of vaeskeygenassist instruction
; round_key value before this key_expansion_128 macro is current round key
; round_key value after this key_expansion_128 macro is next round key
; 2 macros will be used for key generation in a flip-flopped fashion
%macro key_expansion_256_flip 3
%define %%xraw_key %1
%define %%xtmp %2
%define %%xround_key %3
vpshufd %%xraw_key, %%xraw_key, 11111111b
shufps %%xtmp, %%xround_key, 00010000b
vpxor %%xround_key, %%xtmp
shufps %%xtmp, %%xround_key, 10001100b
vpxor %%xround_key, %%xtmp
vpxor %%xround_key, %%xraw_key
%endmacro
%macro key_expansion_256_flop 3
%define %%xraw_key %1
%define %%xtmp %2
%define %%xround_key %3
vpshufd %%xraw_key, %%xraw_key, 10101010b
shufps %%xtmp, %%xround_key, 00010000b
vpxor %%xround_key, %%xtmp
shufps %%xtmp, %%xround_key, 10001100b
vpxor %%xround_key, %%xtmp
vpxor %%xround_key, %%xraw_key
%endmacro
; macro to encrypt the tweak value in parallel with key generation of both keys
%macro encrypt_T 11
%define %%xkey2 %1
%define %%xkey2_2 %2
%define %%xstate_tweak %3
%define %%xkey1 %4
%define %%xkey1_2 %5
%define %%xraw_key %6
%define %%xtmp %7
%define %%xtmp2 %8
%define %%ptr_key2 %9
%define %%ptr_key1 %10
%define %%ptr_expanded_keys %11
vmovdqu %%xkey2, [%%ptr_key2]
vpxor %%xstate_tweak, %%xkey2 ; ARK for tweak encryption
vmovdqu %%xkey1, [%%ptr_key1]
vmovdqa [%%ptr_expanded_keys+16*14], %%xkey1
vmovdqu %%xkey2_2, [%%ptr_key2 + 16*1]
vaesenc %%xstate_tweak, %%xkey2_2 ; round 1 for tweak encryption
vmovdqu %%xkey1_2, [%%ptr_key1 + 16*1]
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*13], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x1 ; Generating round key 2 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x1 ; Generating round key 2 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenc %%xstate_tweak, %%xkey2 ; round 2 for tweak encryption
vaesimc %%xtmp2, %%xkey1
vmovdqa [%%ptr_expanded_keys+16*12], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2, 0x1 ; Generating round key 3 for key2
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey2_2
vaeskeygenassist %%xraw_key, %%xkey1, 0x1 ; Generating round key 3 for key1
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey1_2
vaesenc %%xstate_tweak, %%xkey2_2 ; round 3 for tweak encryption
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*11], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x2 ; Generating round key 4 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x2 ; Generating round key 4 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenc %%xstate_tweak, %%xkey2 ; round 4 for tweak encryption
vaesimc %%xtmp2, %%xkey1
vmovdqa [%%ptr_expanded_keys+16*10], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2, 0x2 ; Generating round key 5 for key2
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey2_2
vaeskeygenassist %%xraw_key, %%xkey1, 0x2 ; Generating round key 5 for key1
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey1_2
vaesenc %%xstate_tweak, %%xkey2_2 ; round 5 for tweak encryption
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*9], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x4 ; Generating round key 6 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x4 ; Generating round key 6 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenc %%xstate_tweak, %%xkey2 ; round 6 for tweak encryption
vaesimc %%xtmp2, %%xkey1
vmovdqa [%%ptr_expanded_keys+16*8], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2, 0x4 ; Generating round key 7 for key2
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey2_2
vaeskeygenassist %%xraw_key, %%xkey1, 0x4 ; Generating round key 7 for key1
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey1_2
vaesenc %%xstate_tweak, %%xkey2_2 ; round 7 for tweak encryption
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*7], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x8 ; Generating round key 8 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x8 ; Generating round key 8 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenc %%xstate_tweak, %%xkey2 ; round 8 for tweak encryption
vaesimc %%xtmp2, %%xkey1
vmovdqa [%%ptr_expanded_keys+16*6], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2, 0x8 ; Generating round key 9 for key2
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey2_2
vaeskeygenassist %%xraw_key, %%xkey1, 0x8 ; Generating round key 9 for key1
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey1_2
vaesenc %%xstate_tweak, %%xkey2_2 ; round 9 for tweak encryption
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*5], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x10 ; Generating round key 10 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x10 ; Generating round key 10 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenc %%xstate_tweak, %%xkey2 ; round 10 for tweak encryption
vaesimc %%xtmp2, %%xkey1
vmovdqa [%%ptr_expanded_keys+16*4], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2, 0x10 ; Generating round key 11 for key2
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey2_2
vaeskeygenassist %%xraw_key, %%xkey1, 0x10 ; Generating round key 11 for key1
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey1_2
vaesenc %%xstate_tweak, %%xkey2_2 ; round 11 for tweak encryption
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*3], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x20 ; Generating round key 12 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x20 ; Generating round key 12 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenc %%xstate_tweak, %%xkey2 ; round 12 for tweak encryption
vaesimc %%xtmp2, %%xkey1
vmovdqa [%%ptr_expanded_keys+16*2], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2, 0x20 ; Generating round key 13 for key2
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey2_2
vaeskeygenassist %%xraw_key, %%xkey1, 0x20 ; Generating round key 13 for key1
key_expansion_256_flop %%xraw_key, %%xtmp, %%xkey1_2
vaesenc %%xstate_tweak, %%xkey2_2 ; round 13 for tweak encryption
vaesimc %%xtmp2, %%xkey1_2
vmovdqa [%%ptr_expanded_keys+16*1], %%xtmp2
vaeskeygenassist %%xraw_key, %%xkey2_2, 0x40 ; Generating round key 14 for key2
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey2
vaeskeygenassist %%xraw_key, %%xkey1_2, 0x40 ; Generating round key 14 for key1
key_expansion_256_flip %%xraw_key, %%xtmp, %%xkey1
vaesenclast %%xstate_tweak, %%xkey2 ; round 14 for tweak encryption
vmovdqa [%%ptr_expanded_keys+16*0], %%xkey1
vmovdqa [TW], %%xstate_tweak ; Store the encrypted Tweak value
%endmacro
; generate initial tweak values
; load initial plaintext values
%macro initialize 16
%define %%ST1 %1 ; state 1
%define %%ST2 %2 ; state 2
%define %%ST3 %3 ; state 3
%define %%ST4 %4 ; state 4
%define %%ST5 %5 ; state 5
%define %%ST6 %6 ; state 6
%define %%ST7 %7 ; state 7
%define %%ST8 %8 ; state 8
%define %%TW1 %9 ; tweak 1
%define %%TW2 %10 ; tweak 2
%define %%TW3 %11 ; tweak 3
%define %%TW4 %12 ; tweak 4
%define %%TW5 %13 ; tweak 5
%define %%TW6 %14 ; tweak 6
%define %%TW7 %15 ; tweak 7
%define %%num_initial_blocks %16
; generate next Tweak values
vmovdqa %%TW1, [TW+16*0]
mov twtempl, [TW+8*0]
mov twtemph, [TW+8*1]
vmovdqu %%ST1, [ptr_plaintext+16*0]
%if (%%num_initial_blocks>=2)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph;
vmovdqa %%TW2, [TW+16*1]
vmovdqu %%ST2, [ptr_plaintext+16*1]
%endif
%if (%%num_initial_blocks>=3)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*4], twtempl
mov [TW+8*5], twtemph;
vmovdqa %%TW3, [TW+16*2]
vmovdqu %%ST3, [ptr_plaintext+16*2]
%endif
%if (%%num_initial_blocks>=4)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*6], twtempl
mov [TW+8*7], twtemph;
vmovdqa %%TW4, [TW+16*3]
vmovdqu %%ST4, [ptr_plaintext+16*3]
%endif
%if (%%num_initial_blocks>=5)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*8], twtempl
mov [TW+8*9], twtemph;
vmovdqa %%TW5, [TW+16*4]
vmovdqu %%ST5, [ptr_plaintext+16*4]
%endif
%if (%%num_initial_blocks>=6)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*10], twtempl
mov [TW+8*11], twtemph;
vmovdqa %%TW6, [TW+16*5]
vmovdqu %%ST6, [ptr_plaintext+16*5]
%endif
%if (%%num_initial_blocks>=7)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*12], twtempl
mov [TW+8*13], twtemph;
vmovdqa %%TW7, [TW+16*6]
vmovdqu %%ST7, [ptr_plaintext+16*6]
%endif
%endmacro
; encrypt initial blocks of AES
; 1, 2, 3, 4, 5, 6 or 7 blocks are encrypted
; next 8 Tweak values are generated
%macro encrypt_initial 18
%define %%ST1 %1 ; state 1
%define %%ST2 %2 ; state 2
%define %%ST3 %3 ; state 3
%define %%ST4 %4 ; state 4
%define %%ST5 %5 ; state 5
%define %%ST6 %6 ; state 6
%define %%ST7 %7 ; state 7
%define %%ST8 %8 ; state 8
%define %%TW1 %9 ; tweak 1
%define %%TW2 %10 ; tweak 2
%define %%TW3 %11 ; tweak 3
%define %%TW4 %12 ; tweak 4
%define %%TW5 %13 ; tweak 5
%define %%TW6 %14 ; tweak 6
%define %%TW7 %15 ; tweak 7
%define %%T0 %16 ; Temp register
%define %%num_blocks %17
; %%num_blocks blocks encrypted
; %%num_blocks can be 1, 2, 3, 4, 5, 6, 7
%define %%lt128 %18 ; less than 128 bytes
; xor Tweak value
vpxor %%ST1, %%TW1
%if (%%num_blocks>=2)
vpxor %%ST2, %%TW2
%endif
%if (%%num_blocks>=3)
vpxor %%ST3, %%TW3
%endif
%if (%%num_blocks>=4)
vpxor %%ST4, %%TW4
%endif
%if (%%num_blocks>=5)
vpxor %%ST5, %%TW5
%endif
%if (%%num_blocks>=6)
vpxor %%ST6, %%TW6
%endif
%if (%%num_blocks>=7)
vpxor %%ST7, %%TW7
%endif
; ARK
vmovdqa %%T0, [keys]
vpxor %%ST1, %%T0
%if (%%num_blocks>=2)
vpxor %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vpxor %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vpxor %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vpxor %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vpxor %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vpxor %%ST7, %%T0
%endif
%if (0 == %%lt128)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
%endif
; round 1
vmovdqa %%T0, [keys + 16*1]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*0], twtempl ; next Tweak1 generated
mov [TW + 8*1], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
%endif
; round 2
vmovdqa %%T0, [keys + 16*2]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*2], twtempl ; next Tweak2 generated
%endif
; round 3
vmovdqa %%T0, [keys + 16*3]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
mov [TW + 8*3], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
%endif
; round 4
vmovdqa %%T0, [keys + 16*4]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*4], twtempl ; next Tweak3 generated
mov [TW + 8*5], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
%endif
; round 5
vmovdqa %%T0, [keys + 16*5]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*6], twtempl ; next Tweak4 generated
mov [TW + 8*7], twtemph
%endif
; round 6
vmovdqa %%T0, [keys + 16*6]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*8], twtempl ; next Tweak5 generated
mov [TW + 8*9], twtemph
%endif
; round 7
vmovdqa %%T0, [keys + 16*7]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*10], twtempl ; next Tweak6 generated
mov [TW + 8*11], twtemph
%endif
; round 8
vmovdqa %%T0, [keys + 16*8]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*12], twtempl ; next Tweak7 generated
mov [TW + 8*13], twtemph
%endif
; round 9
vmovdqa %%T0, [keys + 16*9]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
%if (0 == %%lt128)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*14], twtempl ; next Tweak8 generated
mov [TW + 8*15], twtemph
%endif
; round 10
vmovdqa %%T0, [keys + 16*10]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
; round 11
vmovdqa %%T0, [keys + 16*11]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
; round 12
vmovdqa %%T0, [keys + 16*12]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
; round 13
vmovdqa %%T0, [keys + 16*13]
vaesdec %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdec %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdec %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdec %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdec %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdec %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdec %%ST7, %%T0
%endif
; round 14
vmovdqa %%T0, [keys + 16*14]
vaesdeclast %%ST1, %%T0
%if (%%num_blocks>=2)
vaesdeclast %%ST2, %%T0
%endif
%if (%%num_blocks>=3)
vaesdeclast %%ST3, %%T0
%endif
%if (%%num_blocks>=4)
vaesdeclast %%ST4, %%T0
%endif
%if (%%num_blocks>=5)
vaesdeclast %%ST5, %%T0
%endif
%if (%%num_blocks>=6)
vaesdeclast %%ST6, %%T0
%endif
%if (%%num_blocks>=7)
vaesdeclast %%ST7, %%T0
%endif
; xor Tweak values
vpxor %%ST1, %%TW1
%if (%%num_blocks>=2)
vpxor %%ST2, %%TW2
%endif
%if (%%num_blocks>=3)
vpxor %%ST3, %%TW3
%endif
%if (%%num_blocks>=4)
vpxor %%ST4, %%TW4
%endif
%if (%%num_blocks>=5)
vpxor %%ST5, %%TW5
%endif
%if (%%num_blocks>=6)
vpxor %%ST6, %%TW6
%endif
%if (%%num_blocks>=7)
vpxor %%ST7, %%TW7
%endif
%if (0 == %%lt128)
; load next Tweak values
vmovdqa %%TW1, [TW + 16*0]
vmovdqa %%TW2, [TW + 16*1]
vmovdqa %%TW3, [TW + 16*2]
vmovdqa %%TW4, [TW + 16*3]
vmovdqa %%TW5, [TW + 16*4]
vmovdqa %%TW6, [TW + 16*5]
vmovdqa %%TW7, [TW + 16*6]
%endif
%endmacro
; Encrypt 8 blocks in parallel
; generate next 8 tweak values
%macro encrypt_by_eight 18
%define %%ST1 %1 ; state 1
%define %%ST2 %2 ; state 2
%define %%ST3 %3 ; state 3
%define %%ST4 %4 ; state 4
%define %%ST5 %5 ; state 5
%define %%ST6 %6 ; state 6
%define %%ST7 %7 ; state 7
%define %%ST8 %8 ; state 8
%define %%TW1 %9 ; tweak 1
%define %%TW2 %10 ; tweak 2
%define %%TW3 %11 ; tweak 3
%define %%TW4 %12 ; tweak 4
%define %%TW5 %13 ; tweak 5
%define %%TW6 %14 ; tweak 6
%define %%TW7 %15 ; tweak 7
%define %%TW8 %16 ; tweak 8
%define %%T0 %17 ; Temp register
%define %%last_eight %18
; xor Tweak values
vpxor %%ST1, %%TW1
vpxor %%ST2, %%TW2
vpxor %%ST3, %%TW3
vpxor %%ST4, %%TW4
vpxor %%ST5, %%TW5
vpxor %%ST6, %%TW6
vpxor %%ST7, %%TW7
vpxor %%ST8, %%TW8
; ARK
vmovdqa %%T0, [keys]
vpxor %%ST1, %%T0
vpxor %%ST2, %%T0
vpxor %%ST3, %%T0
vpxor %%ST4, %%T0
vpxor %%ST5, %%T0
vpxor %%ST6, %%T0
vpxor %%ST7, %%T0
vpxor %%ST8, %%T0
%if (0 == %%last_eight)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
%endif
; round 1
vmovdqa %%T0, [keys + 16*1]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*0], twtempl
mov [TW + 8*1], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
%endif
; round 2
vmovdqa %%T0, [keys + 16*2]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
%endif
; round 3
vmovdqa %%T0, [keys + 16*3]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
mov [TW + 8*2], twtempl
mov [TW + 8*3], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
%endif
; round 4
vmovdqa %%T0, [keys + 16*4]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*4], twtempl
%endif
; round 5
vmovdqa %%T0, [keys + 16*5]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
mov [TW + 8*5], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
%endif
; round 6
vmovdqa %%T0, [keys + 16*6]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*6], twtempl
mov [TW + 8*7], twtemph
%endif
; round 7
vmovdqa %%T0, [keys + 16*7]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
%endif
; round 8
vmovdqa %%T0, [keys + 16*8]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*8], twtempl
mov [TW + 8*9], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
%endif
; round 9
vmovdqa %%T0, [keys + 16*9]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
%endif
; round 10
vmovdqa %%T0, [keys + 16*10]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
mov [TW + 8*10], twtempl
mov [TW + 8*11], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
%endif
; round 11
vmovdqa %%T0, [keys + 16*11]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW + 8*12], twtempl
%endif
; round 12
vmovdqa %%T0, [keys + 16*12]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
mov [TW + 8*13], twtemph
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
%endif
; round 13
vmovdqa %%T0, [keys + 16*13]
vaesdec %%ST1, %%T0
vaesdec %%ST2, %%T0
vaesdec %%ST3, %%T0
vaesdec %%ST4, %%T0
vaesdec %%ST5, %%T0
vaesdec %%ST6, %%T0
vaesdec %%ST7, %%T0
vaesdec %%ST8, %%T0
%if (0 == %%last_eight)
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
; mov [TW + 8*14], twtempl
; mov [TW + 8*15], twtemph
%endif
; round 14
vmovdqa %%T0, [keys + 16*14]
vaesdeclast %%ST1, %%T0
vaesdeclast %%ST2, %%T0
vaesdeclast %%ST3, %%T0
vaesdeclast %%ST4, %%T0
vaesdeclast %%ST5, %%T0
vaesdeclast %%ST6, %%T0
vaesdeclast %%ST7, %%T0
vaesdeclast %%ST8, %%T0
; xor Tweak values
vpxor %%ST1, %%TW1
vpxor %%ST2, %%TW2
vpxor %%ST3, %%TW3
vpxor %%ST4, %%TW4
vpxor %%ST5, %%TW5
vpxor %%ST6, %%TW6
vpxor %%ST7, %%TW7
vpxor %%ST8, %%TW8
mov [TW + 8*14], twtempl
mov [TW + 8*15], twtemph
; load next Tweak values
vmovdqa %%TW1, [TW + 16*0]
vmovdqa %%TW2, [TW + 16*1]
vmovdqa %%TW3, [TW + 16*2]
vmovdqa %%TW4, [TW + 16*3]
vmovdqa %%TW5, [TW + 16*4]
vmovdqa %%TW6, [TW + 16*5]
vmovdqa %%TW7, [TW + 16*6]
%endmacro
section .text
global XTS_AES_256_dec_avx:function
XTS_AES_256_dec_avx:
sub rsp, VARIABLE_OFFSET
mov [_gpr + 8*0], rbx
%ifidn __OUTPUT_FORMAT__, win64
mov [_gpr + 8*1], rdi
mov [_gpr + 8*2], rsi
vmovdqa [_xmm + 16*0], xmm6
vmovdqa [_xmm + 16*1], xmm7
vmovdqa [_xmm + 16*2], xmm8
vmovdqa [_xmm + 16*3], xmm9
vmovdqa [_xmm + 16*4], xmm10
vmovdqa [_xmm + 16*5], xmm11
vmovdqa [_xmm + 16*6], xmm12
vmovdqa [_xmm + 16*7], xmm13
vmovdqa [_xmm + 16*8], xmm14
vmovdqa [_xmm + 16*9], xmm15
%endif
mov ghash_poly_8b, GHASH_POLY ; load 0x87 to ghash_poly_8b
vmovdqu xmm1, [T_val] ; read initial Tweak value
vpxor xmm4, xmm4 ; for key expansion
encrypt_T xmm0, xmm5, xmm1, xmm2, xmm6, xmm3, xmm4, xmm7, ptr_key2, ptr_key1, keys
%ifidn __OUTPUT_FORMAT__, win64
mov ptr_plaintext, [rsp + VARIABLE_OFFSET + 8*5] ; plaintext pointer
mov ptr_ciphertext, [rsp + VARIABLE_OFFSET + 8*6] ; ciphertext pointer
%endif
mov target_ptr_val, N_val
and target_ptr_val, -16 ; target_ptr_val = target_ptr_val - (target_ptr_val mod 16)
sub target_ptr_val, 128 ; adjust target_ptr_val because last 4 blocks will not be stitched with Tweak calculations
jl _less_than_128_bytes
add target_ptr_val, ptr_ciphertext
mov tmp1, N_val
and tmp1, (7 << 4)
jz _initial_num_blocks_is_0
cmp tmp1, (4 << 4)
je _initial_num_blocks_is_4
cmp tmp1, (6 << 4)
je _initial_num_blocks_is_6
cmp tmp1, (5 << 4)
je _initial_num_blocks_is_5
cmp tmp1, (3 << 4)
je _initial_num_blocks_is_3
cmp tmp1, (2 << 4)
je _initial_num_blocks_is_2
cmp tmp1, (1 << 4)
je _initial_num_blocks_is_1
_initial_num_blocks_is_7:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 7
add ptr_plaintext, 16*7
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 7, 0
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
vmovdqu [ptr_ciphertext+16*6], xmm7
add ptr_ciphertext, 16*7
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_6:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 6
add ptr_plaintext, 16*6
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 6, 0
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
add ptr_ciphertext, 16*6
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_5:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 5
add ptr_plaintext, 16*5
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 5, 0
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
add ptr_ciphertext, 16*5
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_4:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 4
add ptr_plaintext, 16*4
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 4, 0
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
add ptr_ciphertext, 16*4
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_3:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 3
add ptr_plaintext, 16*3
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 3, 0
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
add ptr_ciphertext, 16*3
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_2:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 2
add ptr_plaintext, 16*2
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 2, 0
; store ciphertext
vmovdqu [ptr_ciphertext], xmm1
vmovdqu [ptr_ciphertext+16], xmm2
add ptr_ciphertext, 16*2
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_1:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 1
add ptr_plaintext, 16*1
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 1, 0
; store ciphertext
vmovdqu [ptr_ciphertext], xmm1
add ptr_ciphertext, 16
cmp ptr_ciphertext, target_ptr_val
je _last_eight
jmp _main_loop
_initial_num_blocks_is_0:
mov twtempl, [TW+8*0]
mov twtemph, [TW+8*1]
vmovdqa xmm9, [TW+16*0]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa xmm10, [TW+16*1]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*4], twtempl
mov [TW+8*5], twtemph
vmovdqa xmm11, [TW+16*2]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*6], twtempl
mov [TW+8*7], twtemph
vmovdqa xmm12, [TW+16*3]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*8], twtempl
mov [TW+8*9], twtemph
vmovdqa xmm13, [TW+16*4]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*10], twtempl
mov [TW+8*11], twtemph
vmovdqa xmm14, [TW+16*5]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*12], twtempl
mov [TW+8*13], twtemph
vmovdqa xmm15, [TW+16*6]
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*14], twtempl
mov [TW+8*15], twtemph
;vmovdqa xmm16, [TW+16*7]
cmp ptr_ciphertext, target_ptr_val
je _last_eight
_main_loop:
; load plaintext
vmovdqu xmm1, [ptr_plaintext+16*0]
vmovdqu xmm2, [ptr_plaintext+16*1]
vmovdqu xmm3, [ptr_plaintext+16*2]
vmovdqu xmm4, [ptr_plaintext+16*3]
vmovdqu xmm5, [ptr_plaintext+16*4]
vmovdqu xmm6, [ptr_plaintext+16*5]
vmovdqu xmm7, [ptr_plaintext+16*6]
vmovdqu xmm8, [ptr_plaintext+16*7]
add ptr_plaintext, 128
encrypt_by_eight xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, [TW+16*7], xmm0, 0
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
vmovdqu [ptr_ciphertext+16*6], xmm7
vmovdqu [ptr_ciphertext+16*7], xmm8
add ptr_ciphertext, 128
cmp ptr_ciphertext, target_ptr_val
jne _main_loop
_last_eight:
and N_val, 15 ; N_val = N_val mod 16
je _done_final
; generate next Tweak value
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
vmovdqa xmm1, [TW + 16*7]
vmovdqa [TW + 16*0], xmm1 ; swap tweak values for cipher stealing for decrypt
mov [TW + 16*7], twtempl
mov [TW + 16*7+8], twtemph
; load plaintext
vmovdqu xmm1, [ptr_plaintext+16*0]
vmovdqu xmm2, [ptr_plaintext+16*1]
vmovdqu xmm3, [ptr_plaintext+16*2]
vmovdqu xmm4, [ptr_plaintext+16*3]
vmovdqu xmm5, [ptr_plaintext+16*4]
vmovdqu xmm6, [ptr_plaintext+16*5]
vmovdqu xmm7, [ptr_plaintext+16*6]
vmovdqu xmm8, [ptr_plaintext+16*7]
encrypt_by_eight xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, [TW+16*7], xmm0, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
vmovdqu [ptr_ciphertext+16*6], xmm7
jmp _steal_cipher
_done_final:
; load plaintext
vmovdqu xmm1, [ptr_plaintext+16*0]
vmovdqu xmm2, [ptr_plaintext+16*1]
vmovdqu xmm3, [ptr_plaintext+16*2]
vmovdqu xmm4, [ptr_plaintext+16*3]
vmovdqu xmm5, [ptr_plaintext+16*4]
vmovdqu xmm6, [ptr_plaintext+16*5]
vmovdqu xmm7, [ptr_plaintext+16*6]
vmovdqu xmm8, [ptr_plaintext+16*7]
encrypt_by_eight xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, [TW+16*7], xmm0, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
vmovdqu [ptr_ciphertext+16*6], xmm7
jmp _done
_steal_cipher:
; start cipher stealing
vmovdqa xmm2, xmm8
; shift xmm8 to the left by 16-N_val bytes
lea twtempl, [vpshufb_shf_table]
vmovdqu xmm0, [twtempl+N_val]
vpshufb xmm8, xmm0
vmovdqu xmm3, [ptr_plaintext + 112 + N_val] ; state register is temporarily xmm3 to eliminate a move
vmovdqu [ptr_ciphertext + 112 + N_val], xmm8
; shift xmm3 to the right by 16-N_val bytes
lea twtempl, [vpshufb_shf_table +16]
sub twtempl, N_val
vmovdqu xmm0, [twtempl]
vpxor xmm0, [mask1]
vpshufb xmm3, xmm0
vpblendvb xmm3, xmm3, xmm2, xmm0 ;xmm0 is implicit
; xor Tweak value
vmovdqa xmm8, [TW]
vpxor xmm8, xmm3 ; state register is xmm8, instead of a move from xmm3 to xmm8, destination register of vpxor instruction is swapped
;encrypt last block with cipher stealing
vpxor xmm8, [keys] ; ARK
vaesdec xmm8, [keys + 16*1] ; round 1
vaesdec xmm8, [keys + 16*2] ; round 2
vaesdec xmm8, [keys + 16*3] ; round 3
vaesdec xmm8, [keys + 16*4] ; round 4
vaesdec xmm8, [keys + 16*5] ; round 5
vaesdec xmm8, [keys + 16*6] ; round 6
vaesdec xmm8, [keys + 16*7] ; round 7
vaesdec xmm8, [keys + 16*8] ; round 8
vaesdec xmm8, [keys + 16*9] ; round 9
vaesdec xmm8, [keys + 16*10] ; round 9
vaesdec xmm8, [keys + 16*11] ; round 9
vaesdec xmm8, [keys + 16*12] ; round 9
vaesdec xmm8, [keys + 16*13] ; round 9
vaesdeclast xmm8, [keys + 16*14] ; round 10
; xor Tweak value
vpxor xmm8, [TW]
_done:
; store last ciphertext value
vmovdqu [ptr_ciphertext+16*7], xmm8
_ret_:
mov rbx, [_gpr + 8*0]
%ifidn __OUTPUT_FORMAT__, win64
mov rdi, [_gpr + 8*1]
mov rsi, [_gpr + 8*2]
vmovdqa xmm6, [_xmm + 16*0]
vmovdqa xmm7, [_xmm + 16*1]
vmovdqa xmm8, [_xmm + 16*2]
vmovdqa xmm9, [_xmm + 16*3]
vmovdqa xmm10, [_xmm + 16*4]
vmovdqa xmm11, [_xmm + 16*5]
vmovdqa xmm12, [_xmm + 16*6]
vmovdqa xmm13, [_xmm + 16*7]
vmovdqa xmm14, [_xmm + 16*8]
vmovdqa xmm15, [_xmm + 16*9]
%endif
add rsp, VARIABLE_OFFSET
ret
_less_than_128_bytes:
cmp N_val, 16
jb _ret_
mov tmp1, N_val
and tmp1, (7 << 4)
cmp tmp1, (6 << 4)
je _num_blocks_is_6
cmp tmp1, (5 << 4)
je _num_blocks_is_5
cmp tmp1, (4 << 4)
je _num_blocks_is_4
cmp tmp1, (3 << 4)
je _num_blocks_is_3
cmp tmp1, (2 << 4)
je _num_blocks_is_2
cmp tmp1, (1 << 4)
je _num_blocks_is_1
_num_blocks_is_7:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 7
sub ptr_plaintext, 16*1
and N_val, 15 ; N_val = N_val mod 16
je _done_7
_steal_cipher_7:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm15
vmovdqa xmm15, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 7, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
sub ptr_ciphertext, 16*1
vmovdqa xmm8, xmm7
jmp _steal_cipher
_done_7:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 7, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
vmovdqu [ptr_ciphertext+16*5], xmm6
sub ptr_ciphertext, 16*1
vmovdqa xmm8, xmm7
jmp _done
_num_blocks_is_6:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 6
sub ptr_plaintext, 16*2
and N_val, 15 ; N_val = N_val mod 16
je _done_6
_steal_cipher_6:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm14
vmovdqa xmm14, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 6, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
sub ptr_ciphertext, 16*2
vmovdqa xmm8, xmm6
jmp _steal_cipher
_done_6:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 6, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
vmovdqu [ptr_ciphertext+16*4], xmm5
sub ptr_ciphertext, 16*2
vmovdqa xmm8, xmm6
jmp _done
_num_blocks_is_5:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 5
sub ptr_plaintext, 16*3
and N_val, 15 ; N_val = N_val mod 16
je _done_5
_steal_cipher_5:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm13
vmovdqa xmm13, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 5, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
sub ptr_ciphertext, 16*3
vmovdqa xmm8, xmm5
jmp _steal_cipher
_done_5:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 5, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
vmovdqu [ptr_ciphertext+16*3], xmm4
sub ptr_ciphertext, 16*3
vmovdqa xmm8, xmm5
jmp _done
_num_blocks_is_4:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 4
sub ptr_plaintext, 16*4
and N_val, 15 ; N_val = N_val mod 16
je _done_4
_steal_cipher_4:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm12
vmovdqa xmm12, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 4, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
sub ptr_ciphertext, 16*4
vmovdqa xmm8, xmm4
jmp _steal_cipher
_done_4:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 4, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
vmovdqu [ptr_ciphertext+16*2], xmm3
sub ptr_ciphertext, 16*4
vmovdqa xmm8, xmm4
jmp _done
_num_blocks_is_3:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 3
sub ptr_plaintext, 16*5
and N_val, 15 ; N_val = N_val mod 16
je _done_3
_steal_cipher_3:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm11
vmovdqa xmm11, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 3, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
sub ptr_ciphertext, 16*5
vmovdqa xmm8, xmm3
jmp _steal_cipher
_done_3:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 3, 1
; store ciphertext
vmovdqu [ptr_ciphertext+16*0], xmm1
vmovdqu [ptr_ciphertext+16*1], xmm2
sub ptr_ciphertext, 16*5
vmovdqa xmm8, xmm3
jmp _done
_num_blocks_is_2:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 2
sub ptr_plaintext, 16*6
and N_val, 15 ; N_val = N_val mod 16
je _done_2
_steal_cipher_2:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm10
vmovdqa xmm10, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 2, 1
; store ciphertext
vmovdqu [ptr_ciphertext], xmm1
sub ptr_ciphertext, 16*6
vmovdqa xmm8, xmm2
jmp _steal_cipher
_done_2:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 2, 1
; store ciphertext
vmovdqu [ptr_ciphertext], xmm1
sub ptr_ciphertext, 16*6
vmovdqa xmm8, xmm2
jmp _done
_num_blocks_is_1:
initialize xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, 1
sub ptr_plaintext, 16*7
and N_val, 15 ; N_val = N_val mod 16
je _done_1
_steal_cipher_1:
xor ghash_poly_8b_temp, ghash_poly_8b_temp
shl twtempl, 1
adc twtemph, twtemph
cmovc ghash_poly_8b_temp, ghash_poly_8b
xor twtempl, ghash_poly_8b_temp
mov [TW+8*2], twtempl
mov [TW+8*3], twtemph
vmovdqa [TW + 16*0] , xmm9
vmovdqa xmm9, [TW+16*1]
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 1, 1
; store ciphertext
sub ptr_ciphertext, 16*7
vmovdqa xmm8, xmm1
jmp _steal_cipher
_done_1:
encrypt_initial xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xmm0, 1, 1
; store ciphertext
sub ptr_ciphertext, 16*7
vmovdqa xmm8, xmm1
jmp _done
section .data
align 16
vpshufb_shf_table:
; use these values for shift constants for the vpshufb instruction
; different alignments result in values as shown:
; dq 0x8887868584838281, 0x008f8e8d8c8b8a89 ; shl 15 (16-1) / shr1
; dq 0x8988878685848382, 0x01008f8e8d8c8b8a ; shl 14 (16-3) / shr2
; dq 0x8a89888786858483, 0x0201008f8e8d8c8b ; shl 13 (16-4) / shr3
; dq 0x8b8a898887868584, 0x030201008f8e8d8c ; shl 12 (16-4) / shr4
; dq 0x8c8b8a8988878685, 0x04030201008f8e8d ; shl 11 (16-5) / shr5
; dq 0x8d8c8b8a89888786, 0x0504030201008f8e ; shl 10 (16-6) / shr6
; dq 0x8e8d8c8b8a898887, 0x060504030201008f ; shl 9 (16-7) / shr7
; dq 0x8f8e8d8c8b8a8988, 0x0706050403020100 ; shl 8 (16-8) / shr8
; dq 0x008f8e8d8c8b8a89, 0x0807060504030201 ; shl 7 (16-9) / shr9
; dq 0x01008f8e8d8c8b8a, 0x0908070605040302 ; shl 6 (16-10) / shr10
; dq 0x0201008f8e8d8c8b, 0x0a09080706050403 ; shl 5 (16-11) / shr11
; dq 0x030201008f8e8d8c, 0x0b0a090807060504 ; shl 4 (16-12) / shr12
; dq 0x04030201008f8e8d, 0x0c0b0a0908070605 ; shl 3 (16-13) / shr13
; dq 0x0504030201008f8e, 0x0d0c0b0a09080706 ; shl 2 (16-14) / shr14
; dq 0x060504030201008f, 0x0e0d0c0b0a090807 ; shl 1 (16-15) / shr15
dq 0x8786858483828100, 0x8f8e8d8c8b8a8988
dq 0x0706050403020100, 0x000e0d0c0b0a0908
mask1:
dq 0x8080808080808080, 0x8080808080808080
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