02968703e8
Remove the repeated word "if" in comments. Signed-off-by: Bo Liu <liubo03@inspur.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
3162 lines
83 KiB
ArmAsm
3162 lines
83 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Implement AES algorithm in Intel AES-NI instructions.
|
|
*
|
|
* The white paper of AES-NI instructions can be downloaded from:
|
|
* http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
|
|
*
|
|
* Copyright (C) 2008, Intel Corp.
|
|
* Author: Huang Ying <ying.huang@intel.com>
|
|
* Vinodh Gopal <vinodh.gopal@intel.com>
|
|
* Kahraman Akdemir
|
|
*
|
|
* Added RFC4106 AES-GCM support for 128-bit keys under the AEAD
|
|
* interface for 64-bit kernels.
|
|
* Authors: Erdinc Ozturk (erdinc.ozturk@intel.com)
|
|
* Aidan O'Mahony (aidan.o.mahony@intel.com)
|
|
* Adrian Hoban <adrian.hoban@intel.com>
|
|
* James Guilford (james.guilford@intel.com)
|
|
* Gabriele Paoloni <gabriele.paoloni@intel.com>
|
|
* Tadeusz Struk (tadeusz.struk@intel.com)
|
|
* Wajdi Feghali (wajdi.k.feghali@intel.com)
|
|
* Copyright (c) 2010, Intel Corporation.
|
|
*
|
|
* Ported x86_64 version to x86:
|
|
* Author: Mathias Krause <minipli@googlemail.com>
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/frame.h>
|
|
#include <asm/nospec-branch.h>
|
|
|
|
/*
|
|
* The following macros are used to move an (un)aligned 16 byte value to/from
|
|
* an XMM register. This can done for either FP or integer values, for FP use
|
|
* movaps (move aligned packed single) or integer use movdqa (move double quad
|
|
* aligned). It doesn't make a performance difference which instruction is used
|
|
* since Nehalem (original Core i7) was released. However, the movaps is a byte
|
|
* shorter, so that is the one we'll use for now. (same for unaligned).
|
|
*/
|
|
#define MOVADQ movaps
|
|
#define MOVUDQ movups
|
|
|
|
#ifdef __x86_64__
|
|
|
|
# constants in mergeable sections, linker can reorder and merge
|
|
.section .rodata.cst16.POLY, "aM", @progbits, 16
|
|
.align 16
|
|
POLY: .octa 0xC2000000000000000000000000000001
|
|
.section .rodata.cst16.TWOONE, "aM", @progbits, 16
|
|
.align 16
|
|
TWOONE: .octa 0x00000001000000000000000000000001
|
|
|
|
.section .rodata.cst16.SHUF_MASK, "aM", @progbits, 16
|
|
.align 16
|
|
SHUF_MASK: .octa 0x000102030405060708090A0B0C0D0E0F
|
|
.section .rodata.cst16.MASK1, "aM", @progbits, 16
|
|
.align 16
|
|
MASK1: .octa 0x0000000000000000ffffffffffffffff
|
|
.section .rodata.cst16.MASK2, "aM", @progbits, 16
|
|
.align 16
|
|
MASK2: .octa 0xffffffffffffffff0000000000000000
|
|
.section .rodata.cst16.ONE, "aM", @progbits, 16
|
|
.align 16
|
|
ONE: .octa 0x00000000000000000000000000000001
|
|
.section .rodata.cst16.F_MIN_MASK, "aM", @progbits, 16
|
|
.align 16
|
|
F_MIN_MASK: .octa 0xf1f2f3f4f5f6f7f8f9fafbfcfdfeff0
|
|
.section .rodata.cst16.dec, "aM", @progbits, 16
|
|
.align 16
|
|
dec: .octa 0x1
|
|
.section .rodata.cst16.enc, "aM", @progbits, 16
|
|
.align 16
|
|
enc: .octa 0x2
|
|
|
|
# order of these constants should not change.
|
|
# more specifically, ALL_F should follow SHIFT_MASK,
|
|
# and zero should follow ALL_F
|
|
.section .rodata, "a", @progbits
|
|
.align 16
|
|
SHIFT_MASK: .octa 0x0f0e0d0c0b0a09080706050403020100
|
|
ALL_F: .octa 0xffffffffffffffffffffffffffffffff
|
|
.octa 0x00000000000000000000000000000000
|
|
|
|
.text
|
|
|
|
|
|
#define STACK_OFFSET 8*3
|
|
|
|
#define AadHash 16*0
|
|
#define AadLen 16*1
|
|
#define InLen (16*1)+8
|
|
#define PBlockEncKey 16*2
|
|
#define OrigIV 16*3
|
|
#define CurCount 16*4
|
|
#define PBlockLen 16*5
|
|
#define HashKey 16*6 // store HashKey <<1 mod poly here
|
|
#define HashKey_2 16*7 // store HashKey^2 <<1 mod poly here
|
|
#define HashKey_3 16*8 // store HashKey^3 <<1 mod poly here
|
|
#define HashKey_4 16*9 // store HashKey^4 <<1 mod poly here
|
|
#define HashKey_k 16*10 // store XOR of High 64 bits and Low 64
|
|
// bits of HashKey <<1 mod poly here
|
|
//(for Karatsuba purposes)
|
|
#define HashKey_2_k 16*11 // store XOR of High 64 bits and Low 64
|
|
// bits of HashKey^2 <<1 mod poly here
|
|
// (for Karatsuba purposes)
|
|
#define HashKey_3_k 16*12 // store XOR of High 64 bits and Low 64
|
|
// bits of HashKey^3 <<1 mod poly here
|
|
// (for Karatsuba purposes)
|
|
#define HashKey_4_k 16*13 // store XOR of High 64 bits and Low 64
|
|
// bits of HashKey^4 <<1 mod poly here
|
|
// (for Karatsuba purposes)
|
|
|
|
#define arg1 rdi
|
|
#define arg2 rsi
|
|
#define arg3 rdx
|
|
#define arg4 rcx
|
|
#define arg5 r8
|
|
#define arg6 r9
|
|
#define arg7 STACK_OFFSET+8(%rsp)
|
|
#define arg8 STACK_OFFSET+16(%rsp)
|
|
#define arg9 STACK_OFFSET+24(%rsp)
|
|
#define arg10 STACK_OFFSET+32(%rsp)
|
|
#define arg11 STACK_OFFSET+40(%rsp)
|
|
#define keysize 2*15*16(%arg1)
|
|
#endif
|
|
|
|
|
|
#define STATE1 %xmm0
|
|
#define STATE2 %xmm4
|
|
#define STATE3 %xmm5
|
|
#define STATE4 %xmm6
|
|
#define STATE STATE1
|
|
#define IN1 %xmm1
|
|
#define IN2 %xmm7
|
|
#define IN3 %xmm8
|
|
#define IN4 %xmm9
|
|
#define IN IN1
|
|
#define KEY %xmm2
|
|
#define IV %xmm3
|
|
|
|
#define BSWAP_MASK %xmm10
|
|
#define CTR %xmm11
|
|
#define INC %xmm12
|
|
|
|
#define GF128MUL_MASK %xmm7
|
|
|
|
#ifdef __x86_64__
|
|
#define AREG %rax
|
|
#define KEYP %rdi
|
|
#define OUTP %rsi
|
|
#define UKEYP OUTP
|
|
#define INP %rdx
|
|
#define LEN %rcx
|
|
#define IVP %r8
|
|
#define KLEN %r9d
|
|
#define T1 %r10
|
|
#define TKEYP T1
|
|
#define T2 %r11
|
|
#define TCTR_LOW T2
|
|
#else
|
|
#define AREG %eax
|
|
#define KEYP %edi
|
|
#define OUTP AREG
|
|
#define UKEYP OUTP
|
|
#define INP %edx
|
|
#define LEN %esi
|
|
#define IVP %ebp
|
|
#define KLEN %ebx
|
|
#define T1 %ecx
|
|
#define TKEYP T1
|
|
#endif
|
|
|
|
.macro FUNC_SAVE
|
|
push %r12
|
|
push %r13
|
|
push %r14
|
|
#
|
|
# states of %xmm registers %xmm6:%xmm15 not saved
|
|
# all %xmm registers are clobbered
|
|
#
|
|
.endm
|
|
|
|
|
|
.macro FUNC_RESTORE
|
|
pop %r14
|
|
pop %r13
|
|
pop %r12
|
|
.endm
|
|
|
|
# Precompute hashkeys.
|
|
# Input: Hash subkey.
|
|
# Output: HashKeys stored in gcm_context_data. Only needs to be called
|
|
# once per key.
|
|
# clobbers r12, and tmp xmm registers.
|
|
.macro PRECOMPUTE SUBKEY TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 TMP7
|
|
mov \SUBKEY, %r12
|
|
movdqu (%r12), \TMP3
|
|
movdqa SHUF_MASK(%rip), \TMP2
|
|
pshufb \TMP2, \TMP3
|
|
|
|
# precompute HashKey<<1 mod poly from the HashKey (required for GHASH)
|
|
|
|
movdqa \TMP3, \TMP2
|
|
psllq $1, \TMP3
|
|
psrlq $63, \TMP2
|
|
movdqa \TMP2, \TMP1
|
|
pslldq $8, \TMP2
|
|
psrldq $8, \TMP1
|
|
por \TMP2, \TMP3
|
|
|
|
# reduce HashKey<<1
|
|
|
|
pshufd $0x24, \TMP1, \TMP2
|
|
pcmpeqd TWOONE(%rip), \TMP2
|
|
pand POLY(%rip), \TMP2
|
|
pxor \TMP2, \TMP3
|
|
movdqu \TMP3, HashKey(%arg2)
|
|
|
|
movdqa \TMP3, \TMP5
|
|
pshufd $78, \TMP3, \TMP1
|
|
pxor \TMP3, \TMP1
|
|
movdqu \TMP1, HashKey_k(%arg2)
|
|
|
|
GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
|
|
# TMP5 = HashKey^2<<1 (mod poly)
|
|
movdqu \TMP5, HashKey_2(%arg2)
|
|
# HashKey_2 = HashKey^2<<1 (mod poly)
|
|
pshufd $78, \TMP5, \TMP1
|
|
pxor \TMP5, \TMP1
|
|
movdqu \TMP1, HashKey_2_k(%arg2)
|
|
|
|
GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
|
|
# TMP5 = HashKey^3<<1 (mod poly)
|
|
movdqu \TMP5, HashKey_3(%arg2)
|
|
pshufd $78, \TMP5, \TMP1
|
|
pxor \TMP5, \TMP1
|
|
movdqu \TMP1, HashKey_3_k(%arg2)
|
|
|
|
GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7
|
|
# TMP5 = HashKey^3<<1 (mod poly)
|
|
movdqu \TMP5, HashKey_4(%arg2)
|
|
pshufd $78, \TMP5, \TMP1
|
|
pxor \TMP5, \TMP1
|
|
movdqu \TMP1, HashKey_4_k(%arg2)
|
|
.endm
|
|
|
|
# GCM_INIT initializes a gcm_context struct to prepare for encoding/decoding.
|
|
# Clobbers rax, r10-r13 and xmm0-xmm6, %xmm13
|
|
.macro GCM_INIT Iv SUBKEY AAD AADLEN
|
|
mov \AADLEN, %r11
|
|
mov %r11, AadLen(%arg2) # ctx_data.aad_length = aad_length
|
|
xor %r11d, %r11d
|
|
mov %r11, InLen(%arg2) # ctx_data.in_length = 0
|
|
mov %r11, PBlockLen(%arg2) # ctx_data.partial_block_length = 0
|
|
mov %r11, PBlockEncKey(%arg2) # ctx_data.partial_block_enc_key = 0
|
|
mov \Iv, %rax
|
|
movdqu (%rax), %xmm0
|
|
movdqu %xmm0, OrigIV(%arg2) # ctx_data.orig_IV = iv
|
|
|
|
movdqa SHUF_MASK(%rip), %xmm2
|
|
pshufb %xmm2, %xmm0
|
|
movdqu %xmm0, CurCount(%arg2) # ctx_data.current_counter = iv
|
|
|
|
PRECOMPUTE \SUBKEY, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7
|
|
movdqu HashKey(%arg2), %xmm13
|
|
|
|
CALC_AAD_HASH %xmm13, \AAD, \AADLEN, %xmm0, %xmm1, %xmm2, %xmm3, \
|
|
%xmm4, %xmm5, %xmm6
|
|
.endm
|
|
|
|
# GCM_ENC_DEC Encodes/Decodes given data. Assumes that the passed gcm_context
|
|
# struct has been initialized by GCM_INIT.
|
|
# Requires the input data be at least 1 byte long because of READ_PARTIAL_BLOCK
|
|
# Clobbers rax, r10-r13, and xmm0-xmm15
|
|
.macro GCM_ENC_DEC operation
|
|
movdqu AadHash(%arg2), %xmm8
|
|
movdqu HashKey(%arg2), %xmm13
|
|
add %arg5, InLen(%arg2)
|
|
|
|
xor %r11d, %r11d # initialise the data pointer offset as zero
|
|
PARTIAL_BLOCK %arg3 %arg4 %arg5 %r11 %xmm8 \operation
|
|
|
|
sub %r11, %arg5 # sub partial block data used
|
|
mov %arg5, %r13 # save the number of bytes
|
|
|
|
and $-16, %r13 # %r13 = %r13 - (%r13 mod 16)
|
|
mov %r13, %r12
|
|
# Encrypt/Decrypt first few blocks
|
|
|
|
and $(3<<4), %r12
|
|
jz .L_initial_num_blocks_is_0_\@
|
|
cmp $(2<<4), %r12
|
|
jb .L_initial_num_blocks_is_1_\@
|
|
je .L_initial_num_blocks_is_2_\@
|
|
.L_initial_num_blocks_is_3_\@:
|
|
INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
|
|
%xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, \operation
|
|
sub $48, %r13
|
|
jmp .L_initial_blocks_\@
|
|
.L_initial_num_blocks_is_2_\@:
|
|
INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
|
|
%xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, \operation
|
|
sub $32, %r13
|
|
jmp .L_initial_blocks_\@
|
|
.L_initial_num_blocks_is_1_\@:
|
|
INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
|
|
%xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, \operation
|
|
sub $16, %r13
|
|
jmp .L_initial_blocks_\@
|
|
.L_initial_num_blocks_is_0_\@:
|
|
INITIAL_BLOCKS_ENC_DEC %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \
|
|
%xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, \operation
|
|
.L_initial_blocks_\@:
|
|
|
|
# Main loop - Encrypt/Decrypt remaining blocks
|
|
|
|
test %r13, %r13
|
|
je .L_zero_cipher_left_\@
|
|
sub $64, %r13
|
|
je .L_four_cipher_left_\@
|
|
.L_crypt_by_4_\@:
|
|
GHASH_4_ENCRYPT_4_PARALLEL_\operation %xmm9, %xmm10, %xmm11, %xmm12, \
|
|
%xmm13, %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, \
|
|
%xmm7, %xmm8, enc
|
|
add $64, %r11
|
|
sub $64, %r13
|
|
jne .L_crypt_by_4_\@
|
|
.L_four_cipher_left_\@:
|
|
GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \
|
|
%xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8
|
|
.L_zero_cipher_left_\@:
|
|
movdqu %xmm8, AadHash(%arg2)
|
|
movdqu %xmm0, CurCount(%arg2)
|
|
|
|
mov %arg5, %r13
|
|
and $15, %r13 # %r13 = arg5 (mod 16)
|
|
je .L_multiple_of_16_bytes_\@
|
|
|
|
mov %r13, PBlockLen(%arg2)
|
|
|
|
# Handle the last <16 Byte block separately
|
|
paddd ONE(%rip), %xmm0 # INCR CNT to get Yn
|
|
movdqu %xmm0, CurCount(%arg2)
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
pshufb %xmm10, %xmm0
|
|
|
|
ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn)
|
|
movdqu %xmm0, PBlockEncKey(%arg2)
|
|
|
|
cmp $16, %arg5
|
|
jge .L_large_enough_update_\@
|
|
|
|
lea (%arg4,%r11,1), %r10
|
|
mov %r13, %r12
|
|
READ_PARTIAL_BLOCK %r10 %r12 %xmm2 %xmm1
|
|
jmp .L_data_read_\@
|
|
|
|
.L_large_enough_update_\@:
|
|
sub $16, %r11
|
|
add %r13, %r11
|
|
|
|
# receive the last <16 Byte block
|
|
movdqu (%arg4, %r11, 1), %xmm1
|
|
|
|
sub %r13, %r11
|
|
add $16, %r11
|
|
|
|
lea SHIFT_MASK+16(%rip), %r12
|
|
# adjust the shuffle mask pointer to be able to shift 16-r13 bytes
|
|
# (r13 is the number of bytes in plaintext mod 16)
|
|
sub %r13, %r12
|
|
# get the appropriate shuffle mask
|
|
movdqu (%r12), %xmm2
|
|
# shift right 16-r13 bytes
|
|
pshufb %xmm2, %xmm1
|
|
|
|
.L_data_read_\@:
|
|
lea ALL_F+16(%rip), %r12
|
|
sub %r13, %r12
|
|
|
|
.ifc \operation, dec
|
|
movdqa %xmm1, %xmm2
|
|
.endif
|
|
pxor %xmm1, %xmm0 # XOR Encrypt(K, Yn)
|
|
movdqu (%r12), %xmm1
|
|
# get the appropriate mask to mask out top 16-r13 bytes of xmm0
|
|
pand %xmm1, %xmm0 # mask out top 16-r13 bytes of xmm0
|
|
.ifc \operation, dec
|
|
pand %xmm1, %xmm2
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
pshufb %xmm10 ,%xmm2
|
|
|
|
pxor %xmm2, %xmm8
|
|
.else
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
pshufb %xmm10,%xmm0
|
|
|
|
pxor %xmm0, %xmm8
|
|
.endif
|
|
|
|
movdqu %xmm8, AadHash(%arg2)
|
|
.ifc \operation, enc
|
|
# GHASH computation for the last <16 byte block
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
# shuffle xmm0 back to output as ciphertext
|
|
pshufb %xmm10, %xmm0
|
|
.endif
|
|
|
|
# Output %r13 bytes
|
|
movq %xmm0, %rax
|
|
cmp $8, %r13
|
|
jle .L_less_than_8_bytes_left_\@
|
|
mov %rax, (%arg3 , %r11, 1)
|
|
add $8, %r11
|
|
psrldq $8, %xmm0
|
|
movq %xmm0, %rax
|
|
sub $8, %r13
|
|
.L_less_than_8_bytes_left_\@:
|
|
mov %al, (%arg3, %r11, 1)
|
|
add $1, %r11
|
|
shr $8, %rax
|
|
sub $1, %r13
|
|
jne .L_less_than_8_bytes_left_\@
|
|
.L_multiple_of_16_bytes_\@:
|
|
.endm
|
|
|
|
# GCM_COMPLETE Finishes update of tag of last partial block
|
|
# Output: Authorization Tag (AUTH_TAG)
|
|
# Clobbers rax, r10-r12, and xmm0, xmm1, xmm5-xmm15
|
|
.macro GCM_COMPLETE AUTHTAG AUTHTAGLEN
|
|
movdqu AadHash(%arg2), %xmm8
|
|
movdqu HashKey(%arg2), %xmm13
|
|
|
|
mov PBlockLen(%arg2), %r12
|
|
|
|
test %r12, %r12
|
|
je .L_partial_done\@
|
|
|
|
GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6
|
|
|
|
.L_partial_done\@:
|
|
mov AadLen(%arg2), %r12 # %r13 = aadLen (number of bytes)
|
|
shl $3, %r12 # convert into number of bits
|
|
movd %r12d, %xmm15 # len(A) in %xmm15
|
|
mov InLen(%arg2), %r12
|
|
shl $3, %r12 # len(C) in bits (*128)
|
|
movq %r12, %xmm1
|
|
|
|
pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000
|
|
pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C)
|
|
pxor %xmm15, %xmm8
|
|
GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6
|
|
# final GHASH computation
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
pshufb %xmm10, %xmm8
|
|
|
|
movdqu OrigIV(%arg2), %xmm0 # %xmm0 = Y0
|
|
ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Y0)
|
|
pxor %xmm8, %xmm0
|
|
.L_return_T_\@:
|
|
mov \AUTHTAG, %r10 # %r10 = authTag
|
|
mov \AUTHTAGLEN, %r11 # %r11 = auth_tag_len
|
|
cmp $16, %r11
|
|
je .L_T_16_\@
|
|
cmp $8, %r11
|
|
jl .L_T_4_\@
|
|
.L_T_8_\@:
|
|
movq %xmm0, %rax
|
|
mov %rax, (%r10)
|
|
add $8, %r10
|
|
sub $8, %r11
|
|
psrldq $8, %xmm0
|
|
test %r11, %r11
|
|
je .L_return_T_done_\@
|
|
.L_T_4_\@:
|
|
movd %xmm0, %eax
|
|
mov %eax, (%r10)
|
|
add $4, %r10
|
|
sub $4, %r11
|
|
psrldq $4, %xmm0
|
|
test %r11, %r11
|
|
je .L_return_T_done_\@
|
|
.L_T_123_\@:
|
|
movd %xmm0, %eax
|
|
cmp $2, %r11
|
|
jl .L_T_1_\@
|
|
mov %ax, (%r10)
|
|
cmp $2, %r11
|
|
je .L_return_T_done_\@
|
|
add $2, %r10
|
|
sar $16, %eax
|
|
.L_T_1_\@:
|
|
mov %al, (%r10)
|
|
jmp .L_return_T_done_\@
|
|
.L_T_16_\@:
|
|
movdqu %xmm0, (%r10)
|
|
.L_return_T_done_\@:
|
|
.endm
|
|
|
|
#ifdef __x86_64__
|
|
/* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0)
|
|
*
|
|
*
|
|
* Input: A and B (128-bits each, bit-reflected)
|
|
* Output: C = A*B*x mod poly, (i.e. >>1 )
|
|
* To compute GH = GH*HashKey mod poly, give HK = HashKey<<1 mod poly as input
|
|
* GH = GH * HK * x mod poly which is equivalent to GH*HashKey mod poly.
|
|
*
|
|
*/
|
|
.macro GHASH_MUL GH HK TMP1 TMP2 TMP3 TMP4 TMP5
|
|
movdqa \GH, \TMP1
|
|
pshufd $78, \GH, \TMP2
|
|
pshufd $78, \HK, \TMP3
|
|
pxor \GH, \TMP2 # TMP2 = a1+a0
|
|
pxor \HK, \TMP3 # TMP3 = b1+b0
|
|
pclmulqdq $0x11, \HK, \TMP1 # TMP1 = a1*b1
|
|
pclmulqdq $0x00, \HK, \GH # GH = a0*b0
|
|
pclmulqdq $0x00, \TMP3, \TMP2 # TMP2 = (a0+a1)*(b1+b0)
|
|
pxor \GH, \TMP2
|
|
pxor \TMP1, \TMP2 # TMP2 = (a0*b0)+(a1*b0)
|
|
movdqa \TMP2, \TMP3
|
|
pslldq $8, \TMP3 # left shift TMP3 2 DWs
|
|
psrldq $8, \TMP2 # right shift TMP2 2 DWs
|
|
pxor \TMP3, \GH
|
|
pxor \TMP2, \TMP1 # TMP2:GH holds the result of GH*HK
|
|
|
|
# first phase of the reduction
|
|
|
|
movdqa \GH, \TMP2
|
|
movdqa \GH, \TMP3
|
|
movdqa \GH, \TMP4 # copy GH into TMP2,TMP3 and TMP4
|
|
# in in order to perform
|
|
# independent shifts
|
|
pslld $31, \TMP2 # packed right shift <<31
|
|
pslld $30, \TMP3 # packed right shift <<30
|
|
pslld $25, \TMP4 # packed right shift <<25
|
|
pxor \TMP3, \TMP2 # xor the shifted versions
|
|
pxor \TMP4, \TMP2
|
|
movdqa \TMP2, \TMP5
|
|
psrldq $4, \TMP5 # right shift TMP5 1 DW
|
|
pslldq $12, \TMP2 # left shift TMP2 3 DWs
|
|
pxor \TMP2, \GH
|
|
|
|
# second phase of the reduction
|
|
|
|
movdqa \GH,\TMP2 # copy GH into TMP2,TMP3 and TMP4
|
|
# in in order to perform
|
|
# independent shifts
|
|
movdqa \GH,\TMP3
|
|
movdqa \GH,\TMP4
|
|
psrld $1,\TMP2 # packed left shift >>1
|
|
psrld $2,\TMP3 # packed left shift >>2
|
|
psrld $7,\TMP4 # packed left shift >>7
|
|
pxor \TMP3,\TMP2 # xor the shifted versions
|
|
pxor \TMP4,\TMP2
|
|
pxor \TMP5, \TMP2
|
|
pxor \TMP2, \GH
|
|
pxor \TMP1, \GH # result is in TMP1
|
|
.endm
|
|
|
|
# Reads DLEN bytes starting at DPTR and stores in XMMDst
|
|
# where 0 < DLEN < 16
|
|
# Clobbers %rax, DLEN and XMM1
|
|
.macro READ_PARTIAL_BLOCK DPTR DLEN XMM1 XMMDst
|
|
cmp $8, \DLEN
|
|
jl .L_read_lt8_\@
|
|
mov (\DPTR), %rax
|
|
movq %rax, \XMMDst
|
|
sub $8, \DLEN
|
|
jz .L_done_read_partial_block_\@
|
|
xor %eax, %eax
|
|
.L_read_next_byte_\@:
|
|
shl $8, %rax
|
|
mov 7(\DPTR, \DLEN, 1), %al
|
|
dec \DLEN
|
|
jnz .L_read_next_byte_\@
|
|
movq %rax, \XMM1
|
|
pslldq $8, \XMM1
|
|
por \XMM1, \XMMDst
|
|
jmp .L_done_read_partial_block_\@
|
|
.L_read_lt8_\@:
|
|
xor %eax, %eax
|
|
.L_read_next_byte_lt8_\@:
|
|
shl $8, %rax
|
|
mov -1(\DPTR, \DLEN, 1), %al
|
|
dec \DLEN
|
|
jnz .L_read_next_byte_lt8_\@
|
|
movq %rax, \XMMDst
|
|
.L_done_read_partial_block_\@:
|
|
.endm
|
|
|
|
# CALC_AAD_HASH: Calculates the hash of the data which will not be encrypted.
|
|
# clobbers r10-11, xmm14
|
|
.macro CALC_AAD_HASH HASHKEY AAD AADLEN TMP1 TMP2 TMP3 TMP4 TMP5 \
|
|
TMP6 TMP7
|
|
MOVADQ SHUF_MASK(%rip), %xmm14
|
|
mov \AAD, %r10 # %r10 = AAD
|
|
mov \AADLEN, %r11 # %r11 = aadLen
|
|
pxor \TMP7, \TMP7
|
|
pxor \TMP6, \TMP6
|
|
|
|
cmp $16, %r11
|
|
jl .L_get_AAD_rest\@
|
|
.L_get_AAD_blocks\@:
|
|
movdqu (%r10), \TMP7
|
|
pshufb %xmm14, \TMP7 # byte-reflect the AAD data
|
|
pxor \TMP7, \TMP6
|
|
GHASH_MUL \TMP6, \HASHKEY, \TMP1, \TMP2, \TMP3, \TMP4, \TMP5
|
|
add $16, %r10
|
|
sub $16, %r11
|
|
cmp $16, %r11
|
|
jge .L_get_AAD_blocks\@
|
|
|
|
movdqu \TMP6, \TMP7
|
|
|
|
/* read the last <16B of AAD */
|
|
.L_get_AAD_rest\@:
|
|
test %r11, %r11
|
|
je .L_get_AAD_done\@
|
|
|
|
READ_PARTIAL_BLOCK %r10, %r11, \TMP1, \TMP7
|
|
pshufb %xmm14, \TMP7 # byte-reflect the AAD data
|
|
pxor \TMP6, \TMP7
|
|
GHASH_MUL \TMP7, \HASHKEY, \TMP1, \TMP2, \TMP3, \TMP4, \TMP5
|
|
movdqu \TMP7, \TMP6
|
|
|
|
.L_get_AAD_done\@:
|
|
movdqu \TMP6, AadHash(%arg2)
|
|
.endm
|
|
|
|
# PARTIAL_BLOCK: Handles encryption/decryption and the tag partial blocks
|
|
# between update calls.
|
|
# Requires the input data be at least 1 byte long due to READ_PARTIAL_BLOCK
|
|
# Outputs encrypted bytes, and updates hash and partial info in gcm_data_context
|
|
# Clobbers rax, r10, r12, r13, xmm0-6, xmm9-13
|
|
.macro PARTIAL_BLOCK CYPH_PLAIN_OUT PLAIN_CYPH_IN PLAIN_CYPH_LEN DATA_OFFSET \
|
|
AAD_HASH operation
|
|
mov PBlockLen(%arg2), %r13
|
|
test %r13, %r13
|
|
je .L_partial_block_done_\@ # Leave Macro if no partial blocks
|
|
# Read in input data without over reading
|
|
cmp $16, \PLAIN_CYPH_LEN
|
|
jl .L_fewer_than_16_bytes_\@
|
|
movups (\PLAIN_CYPH_IN), %xmm1 # If more than 16 bytes, just fill xmm
|
|
jmp .L_data_read_\@
|
|
|
|
.L_fewer_than_16_bytes_\@:
|
|
lea (\PLAIN_CYPH_IN, \DATA_OFFSET, 1), %r10
|
|
mov \PLAIN_CYPH_LEN, %r12
|
|
READ_PARTIAL_BLOCK %r10 %r12 %xmm0 %xmm1
|
|
|
|
mov PBlockLen(%arg2), %r13
|
|
|
|
.L_data_read_\@: # Finished reading in data
|
|
|
|
movdqu PBlockEncKey(%arg2), %xmm9
|
|
movdqu HashKey(%arg2), %xmm13
|
|
|
|
lea SHIFT_MASK(%rip), %r12
|
|
|
|
# adjust the shuffle mask pointer to be able to shift r13 bytes
|
|
# r16-r13 is the number of bytes in plaintext mod 16)
|
|
add %r13, %r12
|
|
movdqu (%r12), %xmm2 # get the appropriate shuffle mask
|
|
pshufb %xmm2, %xmm9 # shift right r13 bytes
|
|
|
|
.ifc \operation, dec
|
|
movdqa %xmm1, %xmm3
|
|
pxor %xmm1, %xmm9 # Cyphertext XOR E(K, Yn)
|
|
|
|
mov \PLAIN_CYPH_LEN, %r10
|
|
add %r13, %r10
|
|
# Set r10 to be the amount of data left in CYPH_PLAIN_IN after filling
|
|
sub $16, %r10
|
|
# Determine if partial block is not being filled and
|
|
# shift mask accordingly
|
|
jge .L_no_extra_mask_1_\@
|
|
sub %r10, %r12
|
|
.L_no_extra_mask_1_\@:
|
|
|
|
movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
|
|
# get the appropriate mask to mask out bottom r13 bytes of xmm9
|
|
pand %xmm1, %xmm9 # mask out bottom r13 bytes of xmm9
|
|
|
|
pand %xmm1, %xmm3
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
pshufb %xmm10, %xmm3
|
|
pshufb %xmm2, %xmm3
|
|
pxor %xmm3, \AAD_HASH
|
|
|
|
test %r10, %r10
|
|
jl .L_partial_incomplete_1_\@
|
|
|
|
# GHASH computation for the last <16 Byte block
|
|
GHASH_MUL \AAD_HASH, %xmm13, %xmm0, %xmm10, %xmm11, %xmm5, %xmm6
|
|
xor %eax, %eax
|
|
|
|
mov %rax, PBlockLen(%arg2)
|
|
jmp .L_dec_done_\@
|
|
.L_partial_incomplete_1_\@:
|
|
add \PLAIN_CYPH_LEN, PBlockLen(%arg2)
|
|
.L_dec_done_\@:
|
|
movdqu \AAD_HASH, AadHash(%arg2)
|
|
.else
|
|
pxor %xmm1, %xmm9 # Plaintext XOR E(K, Yn)
|
|
|
|
mov \PLAIN_CYPH_LEN, %r10
|
|
add %r13, %r10
|
|
# Set r10 to be the amount of data left in CYPH_PLAIN_IN after filling
|
|
sub $16, %r10
|
|
# Determine if partial block is not being filled and
|
|
# shift mask accordingly
|
|
jge .L_no_extra_mask_2_\@
|
|
sub %r10, %r12
|
|
.L_no_extra_mask_2_\@:
|
|
|
|
movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
|
|
# get the appropriate mask to mask out bottom r13 bytes of xmm9
|
|
pand %xmm1, %xmm9
|
|
|
|
movdqa SHUF_MASK(%rip), %xmm1
|
|
pshufb %xmm1, %xmm9
|
|
pshufb %xmm2, %xmm9
|
|
pxor %xmm9, \AAD_HASH
|
|
|
|
test %r10, %r10
|
|
jl .L_partial_incomplete_2_\@
|
|
|
|
# GHASH computation for the last <16 Byte block
|
|
GHASH_MUL \AAD_HASH, %xmm13, %xmm0, %xmm10, %xmm11, %xmm5, %xmm6
|
|
xor %eax, %eax
|
|
|
|
mov %rax, PBlockLen(%arg2)
|
|
jmp .L_encode_done_\@
|
|
.L_partial_incomplete_2_\@:
|
|
add \PLAIN_CYPH_LEN, PBlockLen(%arg2)
|
|
.L_encode_done_\@:
|
|
movdqu \AAD_HASH, AadHash(%arg2)
|
|
|
|
movdqa SHUF_MASK(%rip), %xmm10
|
|
# shuffle xmm9 back to output as ciphertext
|
|
pshufb %xmm10, %xmm9
|
|
pshufb %xmm2, %xmm9
|
|
.endif
|
|
# output encrypted Bytes
|
|
test %r10, %r10
|
|
jl .L_partial_fill_\@
|
|
mov %r13, %r12
|
|
mov $16, %r13
|
|
# Set r13 to be the number of bytes to write out
|
|
sub %r12, %r13
|
|
jmp .L_count_set_\@
|
|
.L_partial_fill_\@:
|
|
mov \PLAIN_CYPH_LEN, %r13
|
|
.L_count_set_\@:
|
|
movdqa %xmm9, %xmm0
|
|
movq %xmm0, %rax
|
|
cmp $8, %r13
|
|
jle .L_less_than_8_bytes_left_\@
|
|
|
|
mov %rax, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1)
|
|
add $8, \DATA_OFFSET
|
|
psrldq $8, %xmm0
|
|
movq %xmm0, %rax
|
|
sub $8, %r13
|
|
.L_less_than_8_bytes_left_\@:
|
|
movb %al, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1)
|
|
add $1, \DATA_OFFSET
|
|
shr $8, %rax
|
|
sub $1, %r13
|
|
jne .L_less_than_8_bytes_left_\@
|
|
.L_partial_block_done_\@:
|
|
.endm # PARTIAL_BLOCK
|
|
|
|
/*
|
|
* if a = number of total plaintext bytes
|
|
* b = floor(a/16)
|
|
* num_initial_blocks = b mod 4
|
|
* encrypt the initial num_initial_blocks blocks and apply ghash on
|
|
* the ciphertext
|
|
* %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
|
|
* are clobbered
|
|
* arg1, %arg2, %arg3 are used as a pointer only, not modified
|
|
*/
|
|
|
|
|
|
.macro INITIAL_BLOCKS_ENC_DEC TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
|
|
XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
|
|
MOVADQ SHUF_MASK(%rip), %xmm14
|
|
|
|
movdqu AadHash(%arg2), %xmm\i # XMM0 = Y0
|
|
|
|
# start AES for num_initial_blocks blocks
|
|
|
|
movdqu CurCount(%arg2), \XMM0 # XMM0 = Y0
|
|
|
|
.if (\i == 5) || (\i == 6) || (\i == 7)
|
|
|
|
MOVADQ ONE(%RIP),\TMP1
|
|
MOVADQ 0(%arg1),\TMP2
|
|
.irpc index, \i_seq
|
|
paddd \TMP1, \XMM0 # INCR Y0
|
|
.ifc \operation, dec
|
|
movdqa \XMM0, %xmm\index
|
|
.else
|
|
MOVADQ \XMM0, %xmm\index
|
|
.endif
|
|
pshufb %xmm14, %xmm\index # perform a 16 byte swap
|
|
pxor \TMP2, %xmm\index
|
|
.endr
|
|
lea 0x10(%arg1),%r10
|
|
mov keysize,%eax
|
|
shr $2,%eax # 128->4, 192->6, 256->8
|
|
add $5,%eax # 128->9, 192->11, 256->13
|
|
|
|
.Laes_loop_initial_\@:
|
|
MOVADQ (%r10),\TMP1
|
|
.irpc index, \i_seq
|
|
aesenc \TMP1, %xmm\index
|
|
.endr
|
|
add $16,%r10
|
|
sub $1,%eax
|
|
jnz .Laes_loop_initial_\@
|
|
|
|
MOVADQ (%r10), \TMP1
|
|
.irpc index, \i_seq
|
|
aesenclast \TMP1, %xmm\index # Last Round
|
|
.endr
|
|
.irpc index, \i_seq
|
|
movdqu (%arg4 , %r11, 1), \TMP1
|
|
pxor \TMP1, %xmm\index
|
|
movdqu %xmm\index, (%arg3 , %r11, 1)
|
|
# write back plaintext/ciphertext for num_initial_blocks
|
|
add $16, %r11
|
|
|
|
.ifc \operation, dec
|
|
movdqa \TMP1, %xmm\index
|
|
.endif
|
|
pshufb %xmm14, %xmm\index
|
|
|
|
# prepare plaintext/ciphertext for GHASH computation
|
|
.endr
|
|
.endif
|
|
|
|
# apply GHASH on num_initial_blocks blocks
|
|
|
|
.if \i == 5
|
|
pxor %xmm5, %xmm6
|
|
GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
|
|
pxor %xmm6, %xmm7
|
|
GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
|
|
pxor %xmm7, %xmm8
|
|
GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
|
|
.elseif \i == 6
|
|
pxor %xmm6, %xmm7
|
|
GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
|
|
pxor %xmm7, %xmm8
|
|
GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
|
|
.elseif \i == 7
|
|
pxor %xmm7, %xmm8
|
|
GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1
|
|
.endif
|
|
cmp $64, %r13
|
|
jl .L_initial_blocks_done\@
|
|
# no need for precomputed values
|
|
/*
|
|
*
|
|
* Precomputations for HashKey parallel with encryption of first 4 blocks.
|
|
* Haskey_i_k holds XORed values of the low and high parts of the Haskey_i
|
|
*/
|
|
MOVADQ ONE(%RIP),\TMP1
|
|
paddd \TMP1, \XMM0 # INCR Y0
|
|
MOVADQ \XMM0, \XMM1
|
|
pshufb %xmm14, \XMM1 # perform a 16 byte swap
|
|
|
|
paddd \TMP1, \XMM0 # INCR Y0
|
|
MOVADQ \XMM0, \XMM2
|
|
pshufb %xmm14, \XMM2 # perform a 16 byte swap
|
|
|
|
paddd \TMP1, \XMM0 # INCR Y0
|
|
MOVADQ \XMM0, \XMM3
|
|
pshufb %xmm14, \XMM3 # perform a 16 byte swap
|
|
|
|
paddd \TMP1, \XMM0 # INCR Y0
|
|
MOVADQ \XMM0, \XMM4
|
|
pshufb %xmm14, \XMM4 # perform a 16 byte swap
|
|
|
|
MOVADQ 0(%arg1),\TMP1
|
|
pxor \TMP1, \XMM1
|
|
pxor \TMP1, \XMM2
|
|
pxor \TMP1, \XMM3
|
|
pxor \TMP1, \XMM4
|
|
.irpc index, 1234 # do 4 rounds
|
|
movaps 0x10*\index(%arg1), \TMP1
|
|
aesenc \TMP1, \XMM1
|
|
aesenc \TMP1, \XMM2
|
|
aesenc \TMP1, \XMM3
|
|
aesenc \TMP1, \XMM4
|
|
.endr
|
|
.irpc index, 56789 # do next 5 rounds
|
|
movaps 0x10*\index(%arg1), \TMP1
|
|
aesenc \TMP1, \XMM1
|
|
aesenc \TMP1, \XMM2
|
|
aesenc \TMP1, \XMM3
|
|
aesenc \TMP1, \XMM4
|
|
.endr
|
|
lea 0xa0(%arg1),%r10
|
|
mov keysize,%eax
|
|
shr $2,%eax # 128->4, 192->6, 256->8
|
|
sub $4,%eax # 128->0, 192->2, 256->4
|
|
jz .Laes_loop_pre_done\@
|
|
|
|
.Laes_loop_pre_\@:
|
|
MOVADQ (%r10),\TMP2
|
|
.irpc index, 1234
|
|
aesenc \TMP2, %xmm\index
|
|
.endr
|
|
add $16,%r10
|
|
sub $1,%eax
|
|
jnz .Laes_loop_pre_\@
|
|
|
|
.Laes_loop_pre_done\@:
|
|
MOVADQ (%r10), \TMP2
|
|
aesenclast \TMP2, \XMM1
|
|
aesenclast \TMP2, \XMM2
|
|
aesenclast \TMP2, \XMM3
|
|
aesenclast \TMP2, \XMM4
|
|
movdqu 16*0(%arg4 , %r11 , 1), \TMP1
|
|
pxor \TMP1, \XMM1
|
|
.ifc \operation, dec
|
|
movdqu \XMM1, 16*0(%arg3 , %r11 , 1)
|
|
movdqa \TMP1, \XMM1
|
|
.endif
|
|
movdqu 16*1(%arg4 , %r11 , 1), \TMP1
|
|
pxor \TMP1, \XMM2
|
|
.ifc \operation, dec
|
|
movdqu \XMM2, 16*1(%arg3 , %r11 , 1)
|
|
movdqa \TMP1, \XMM2
|
|
.endif
|
|
movdqu 16*2(%arg4 , %r11 , 1), \TMP1
|
|
pxor \TMP1, \XMM3
|
|
.ifc \operation, dec
|
|
movdqu \XMM3, 16*2(%arg3 , %r11 , 1)
|
|
movdqa \TMP1, \XMM3
|
|
.endif
|
|
movdqu 16*3(%arg4 , %r11 , 1), \TMP1
|
|
pxor \TMP1, \XMM4
|
|
.ifc \operation, dec
|
|
movdqu \XMM4, 16*3(%arg3 , %r11 , 1)
|
|
movdqa \TMP1, \XMM4
|
|
.else
|
|
movdqu \XMM1, 16*0(%arg3 , %r11 , 1)
|
|
movdqu \XMM2, 16*1(%arg3 , %r11 , 1)
|
|
movdqu \XMM3, 16*2(%arg3 , %r11 , 1)
|
|
movdqu \XMM4, 16*3(%arg3 , %r11 , 1)
|
|
.endif
|
|
|
|
add $64, %r11
|
|
pshufb %xmm14, \XMM1 # perform a 16 byte swap
|
|
pxor \XMMDst, \XMM1
|
|
# combine GHASHed value with the corresponding ciphertext
|
|
pshufb %xmm14, \XMM2 # perform a 16 byte swap
|
|
pshufb %xmm14, \XMM3 # perform a 16 byte swap
|
|
pshufb %xmm14, \XMM4 # perform a 16 byte swap
|
|
|
|
.L_initial_blocks_done\@:
|
|
|
|
.endm
|
|
|
|
/*
|
|
* encrypt 4 blocks at a time
|
|
* ghash the 4 previously encrypted ciphertext blocks
|
|
* arg1, %arg3, %arg4 are used as pointers only, not modified
|
|
* %r11 is the data offset value
|
|
*/
|
|
.macro GHASH_4_ENCRYPT_4_PARALLEL_enc TMP1 TMP2 TMP3 TMP4 TMP5 \
|
|
TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
|
|
|
|
movdqa \XMM1, \XMM5
|
|
movdqa \XMM2, \XMM6
|
|
movdqa \XMM3, \XMM7
|
|
movdqa \XMM4, \XMM8
|
|
|
|
movdqa SHUF_MASK(%rip), %xmm15
|
|
# multiply TMP5 * HashKey using karatsuba
|
|
|
|
movdqa \XMM5, \TMP4
|
|
pshufd $78, \XMM5, \TMP6
|
|
pxor \XMM5, \TMP6
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqu HashKey_4(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP4 # TMP4 = a1*b1
|
|
movdqa \XMM0, \XMM1
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqa \XMM0, \XMM2
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqa \XMM0, \XMM3
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqa \XMM0, \XMM4
|
|
pshufb %xmm15, \XMM1 # perform a 16 byte swap
|
|
pclmulqdq $0x00, \TMP5, \XMM5 # XMM5 = a0*b0
|
|
pshufb %xmm15, \XMM2 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM3 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM4 # perform a 16 byte swap
|
|
|
|
pxor (%arg1), \XMM1
|
|
pxor (%arg1), \XMM2
|
|
pxor (%arg1), \XMM3
|
|
pxor (%arg1), \XMM4
|
|
movdqu HashKey_4_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0)
|
|
movaps 0x10(%arg1), \TMP1
|
|
aesenc \TMP1, \XMM1 # Round 1
|
|
aesenc \TMP1, \XMM2
|
|
aesenc \TMP1, \XMM3
|
|
aesenc \TMP1, \XMM4
|
|
movaps 0x20(%arg1), \TMP1
|
|
aesenc \TMP1, \XMM1 # Round 2
|
|
aesenc \TMP1, \XMM2
|
|
aesenc \TMP1, \XMM3
|
|
aesenc \TMP1, \XMM4
|
|
movdqa \XMM6, \TMP1
|
|
pshufd $78, \XMM6, \TMP2
|
|
pxor \XMM6, \TMP2
|
|
movdqu HashKey_3(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1 * b1
|
|
movaps 0x30(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 3
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pclmulqdq $0x00, \TMP5, \XMM6 # XMM6 = a0*b0
|
|
movaps 0x40(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 4
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
movdqu HashKey_3_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movaps 0x50(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 5
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pxor \TMP1, \TMP4
|
|
# accumulate the results in TMP4:XMM5, TMP6 holds the middle part
|
|
pxor \XMM6, \XMM5
|
|
pxor \TMP2, \TMP6
|
|
movdqa \XMM7, \TMP1
|
|
pshufd $78, \XMM7, \TMP2
|
|
pxor \XMM7, \TMP2
|
|
movdqu HashKey_2(%arg2), \TMP5
|
|
|
|
# Multiply TMP5 * HashKey using karatsuba
|
|
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
movaps 0x60(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 6
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pclmulqdq $0x00, \TMP5, \XMM7 # XMM7 = a0*b0
|
|
movaps 0x70(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 7
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
movdqu HashKey_2_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movaps 0x80(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 8
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pxor \TMP1, \TMP4
|
|
# accumulate the results in TMP4:XMM5, TMP6 holds the middle part
|
|
pxor \XMM7, \XMM5
|
|
pxor \TMP2, \TMP6
|
|
|
|
# Multiply XMM8 * HashKey
|
|
# XMM8 and TMP5 hold the values for the two operands
|
|
|
|
movdqa \XMM8, \TMP1
|
|
pshufd $78, \XMM8, \TMP2
|
|
pxor \XMM8, \TMP2
|
|
movdqu HashKey(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
movaps 0x90(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 9
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pclmulqdq $0x00, \TMP5, \XMM8 # XMM8 = a0*b0
|
|
lea 0xa0(%arg1),%r10
|
|
mov keysize,%eax
|
|
shr $2,%eax # 128->4, 192->6, 256->8
|
|
sub $4,%eax # 128->0, 192->2, 256->4
|
|
jz .Laes_loop_par_enc_done\@
|
|
|
|
.Laes_loop_par_enc\@:
|
|
MOVADQ (%r10),\TMP3
|
|
.irpc index, 1234
|
|
aesenc \TMP3, %xmm\index
|
|
.endr
|
|
add $16,%r10
|
|
sub $1,%eax
|
|
jnz .Laes_loop_par_enc\@
|
|
|
|
.Laes_loop_par_enc_done\@:
|
|
MOVADQ (%r10), \TMP3
|
|
aesenclast \TMP3, \XMM1 # Round 10
|
|
aesenclast \TMP3, \XMM2
|
|
aesenclast \TMP3, \XMM3
|
|
aesenclast \TMP3, \XMM4
|
|
movdqu HashKey_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movdqu (%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK
|
|
movdqu 16(%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK
|
|
movdqu 32(%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK
|
|
movdqu 48(%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK
|
|
movdqu \XMM1, (%arg3,%r11,1) # Write to the ciphertext buffer
|
|
movdqu \XMM2, 16(%arg3,%r11,1) # Write to the ciphertext buffer
|
|
movdqu \XMM3, 32(%arg3,%r11,1) # Write to the ciphertext buffer
|
|
movdqu \XMM4, 48(%arg3,%r11,1) # Write to the ciphertext buffer
|
|
pshufb %xmm15, \XMM1 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM2 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM3 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM4 # perform a 16 byte swap
|
|
|
|
pxor \TMP4, \TMP1
|
|
pxor \XMM8, \XMM5
|
|
pxor \TMP6, \TMP2
|
|
pxor \TMP1, \TMP2
|
|
pxor \XMM5, \TMP2
|
|
movdqa \TMP2, \TMP3
|
|
pslldq $8, \TMP3 # left shift TMP3 2 DWs
|
|
psrldq $8, \TMP2 # right shift TMP2 2 DWs
|
|
pxor \TMP3, \XMM5
|
|
pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5
|
|
|
|
# first phase of reduction
|
|
|
|
movdqa \XMM5, \TMP2
|
|
movdqa \XMM5, \TMP3
|
|
movdqa \XMM5, \TMP4
|
|
# move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently
|
|
pslld $31, \TMP2 # packed right shift << 31
|
|
pslld $30, \TMP3 # packed right shift << 30
|
|
pslld $25, \TMP4 # packed right shift << 25
|
|
pxor \TMP3, \TMP2 # xor the shifted versions
|
|
pxor \TMP4, \TMP2
|
|
movdqa \TMP2, \TMP5
|
|
psrldq $4, \TMP5 # right shift T5 1 DW
|
|
pslldq $12, \TMP2 # left shift T2 3 DWs
|
|
pxor \TMP2, \XMM5
|
|
|
|
# second phase of reduction
|
|
|
|
movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4
|
|
movdqa \XMM5,\TMP3
|
|
movdqa \XMM5,\TMP4
|
|
psrld $1, \TMP2 # packed left shift >>1
|
|
psrld $2, \TMP3 # packed left shift >>2
|
|
psrld $7, \TMP4 # packed left shift >>7
|
|
pxor \TMP3,\TMP2 # xor the shifted versions
|
|
pxor \TMP4,\TMP2
|
|
pxor \TMP5, \TMP2
|
|
pxor \TMP2, \XMM5
|
|
pxor \TMP1, \XMM5 # result is in TMP1
|
|
|
|
pxor \XMM5, \XMM1
|
|
.endm
|
|
|
|
/*
|
|
* decrypt 4 blocks at a time
|
|
* ghash the 4 previously decrypted ciphertext blocks
|
|
* arg1, %arg3, %arg4 are used as pointers only, not modified
|
|
* %r11 is the data offset value
|
|
*/
|
|
.macro GHASH_4_ENCRYPT_4_PARALLEL_dec TMP1 TMP2 TMP3 TMP4 TMP5 \
|
|
TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation
|
|
|
|
movdqa \XMM1, \XMM5
|
|
movdqa \XMM2, \XMM6
|
|
movdqa \XMM3, \XMM7
|
|
movdqa \XMM4, \XMM8
|
|
|
|
movdqa SHUF_MASK(%rip), %xmm15
|
|
# multiply TMP5 * HashKey using karatsuba
|
|
|
|
movdqa \XMM5, \TMP4
|
|
pshufd $78, \XMM5, \TMP6
|
|
pxor \XMM5, \TMP6
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqu HashKey_4(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP4 # TMP4 = a1*b1
|
|
movdqa \XMM0, \XMM1
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqa \XMM0, \XMM2
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqa \XMM0, \XMM3
|
|
paddd ONE(%rip), \XMM0 # INCR CNT
|
|
movdqa \XMM0, \XMM4
|
|
pshufb %xmm15, \XMM1 # perform a 16 byte swap
|
|
pclmulqdq $0x00, \TMP5, \XMM5 # XMM5 = a0*b0
|
|
pshufb %xmm15, \XMM2 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM3 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM4 # perform a 16 byte swap
|
|
|
|
pxor (%arg1), \XMM1
|
|
pxor (%arg1), \XMM2
|
|
pxor (%arg1), \XMM3
|
|
pxor (%arg1), \XMM4
|
|
movdqu HashKey_4_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0)
|
|
movaps 0x10(%arg1), \TMP1
|
|
aesenc \TMP1, \XMM1 # Round 1
|
|
aesenc \TMP1, \XMM2
|
|
aesenc \TMP1, \XMM3
|
|
aesenc \TMP1, \XMM4
|
|
movaps 0x20(%arg1), \TMP1
|
|
aesenc \TMP1, \XMM1 # Round 2
|
|
aesenc \TMP1, \XMM2
|
|
aesenc \TMP1, \XMM3
|
|
aesenc \TMP1, \XMM4
|
|
movdqa \XMM6, \TMP1
|
|
pshufd $78, \XMM6, \TMP2
|
|
pxor \XMM6, \TMP2
|
|
movdqu HashKey_3(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1 * b1
|
|
movaps 0x30(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 3
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pclmulqdq $0x00, \TMP5, \XMM6 # XMM6 = a0*b0
|
|
movaps 0x40(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 4
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
movdqu HashKey_3_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movaps 0x50(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 5
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pxor \TMP1, \TMP4
|
|
# accumulate the results in TMP4:XMM5, TMP6 holds the middle part
|
|
pxor \XMM6, \XMM5
|
|
pxor \TMP2, \TMP6
|
|
movdqa \XMM7, \TMP1
|
|
pshufd $78, \XMM7, \TMP2
|
|
pxor \XMM7, \TMP2
|
|
movdqu HashKey_2(%arg2), \TMP5
|
|
|
|
# Multiply TMP5 * HashKey using karatsuba
|
|
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
movaps 0x60(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 6
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pclmulqdq $0x00, \TMP5, \XMM7 # XMM7 = a0*b0
|
|
movaps 0x70(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 7
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
movdqu HashKey_2_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movaps 0x80(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 8
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pxor \TMP1, \TMP4
|
|
# accumulate the results in TMP4:XMM5, TMP6 holds the middle part
|
|
pxor \XMM7, \XMM5
|
|
pxor \TMP2, \TMP6
|
|
|
|
# Multiply XMM8 * HashKey
|
|
# XMM8 and TMP5 hold the values for the two operands
|
|
|
|
movdqa \XMM8, \TMP1
|
|
pshufd $78, \XMM8, \TMP2
|
|
pxor \XMM8, \TMP2
|
|
movdqu HashKey(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
movaps 0x90(%arg1), \TMP3
|
|
aesenc \TMP3, \XMM1 # Round 9
|
|
aesenc \TMP3, \XMM2
|
|
aesenc \TMP3, \XMM3
|
|
aesenc \TMP3, \XMM4
|
|
pclmulqdq $0x00, \TMP5, \XMM8 # XMM8 = a0*b0
|
|
lea 0xa0(%arg1),%r10
|
|
mov keysize,%eax
|
|
shr $2,%eax # 128->4, 192->6, 256->8
|
|
sub $4,%eax # 128->0, 192->2, 256->4
|
|
jz .Laes_loop_par_dec_done\@
|
|
|
|
.Laes_loop_par_dec\@:
|
|
MOVADQ (%r10),\TMP3
|
|
.irpc index, 1234
|
|
aesenc \TMP3, %xmm\index
|
|
.endr
|
|
add $16,%r10
|
|
sub $1,%eax
|
|
jnz .Laes_loop_par_dec\@
|
|
|
|
.Laes_loop_par_dec_done\@:
|
|
MOVADQ (%r10), \TMP3
|
|
aesenclast \TMP3, \XMM1 # last round
|
|
aesenclast \TMP3, \XMM2
|
|
aesenclast \TMP3, \XMM3
|
|
aesenclast \TMP3, \XMM4
|
|
movdqu HashKey_k(%arg2), \TMP5
|
|
pclmulqdq $0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movdqu (%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK
|
|
movdqu \XMM1, (%arg3,%r11,1) # Write to plaintext buffer
|
|
movdqa \TMP3, \XMM1
|
|
movdqu 16(%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK
|
|
movdqu \XMM2, 16(%arg3,%r11,1) # Write to plaintext buffer
|
|
movdqa \TMP3, \XMM2
|
|
movdqu 32(%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK
|
|
movdqu \XMM3, 32(%arg3,%r11,1) # Write to plaintext buffer
|
|
movdqa \TMP3, \XMM3
|
|
movdqu 48(%arg4,%r11,1), \TMP3
|
|
pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK
|
|
movdqu \XMM4, 48(%arg3,%r11,1) # Write to plaintext buffer
|
|
movdqa \TMP3, \XMM4
|
|
pshufb %xmm15, \XMM1 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM2 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM3 # perform a 16 byte swap
|
|
pshufb %xmm15, \XMM4 # perform a 16 byte swap
|
|
|
|
pxor \TMP4, \TMP1
|
|
pxor \XMM8, \XMM5
|
|
pxor \TMP6, \TMP2
|
|
pxor \TMP1, \TMP2
|
|
pxor \XMM5, \TMP2
|
|
movdqa \TMP2, \TMP3
|
|
pslldq $8, \TMP3 # left shift TMP3 2 DWs
|
|
psrldq $8, \TMP2 # right shift TMP2 2 DWs
|
|
pxor \TMP3, \XMM5
|
|
pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5
|
|
|
|
# first phase of reduction
|
|
|
|
movdqa \XMM5, \TMP2
|
|
movdqa \XMM5, \TMP3
|
|
movdqa \XMM5, \TMP4
|
|
# move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently
|
|
pslld $31, \TMP2 # packed right shift << 31
|
|
pslld $30, \TMP3 # packed right shift << 30
|
|
pslld $25, \TMP4 # packed right shift << 25
|
|
pxor \TMP3, \TMP2 # xor the shifted versions
|
|
pxor \TMP4, \TMP2
|
|
movdqa \TMP2, \TMP5
|
|
psrldq $4, \TMP5 # right shift T5 1 DW
|
|
pslldq $12, \TMP2 # left shift T2 3 DWs
|
|
pxor \TMP2, \XMM5
|
|
|
|
# second phase of reduction
|
|
|
|
movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4
|
|
movdqa \XMM5,\TMP3
|
|
movdqa \XMM5,\TMP4
|
|
psrld $1, \TMP2 # packed left shift >>1
|
|
psrld $2, \TMP3 # packed left shift >>2
|
|
psrld $7, \TMP4 # packed left shift >>7
|
|
pxor \TMP3,\TMP2 # xor the shifted versions
|
|
pxor \TMP4,\TMP2
|
|
pxor \TMP5, \TMP2
|
|
pxor \TMP2, \XMM5
|
|
pxor \TMP1, \XMM5 # result is in TMP1
|
|
|
|
pxor \XMM5, \XMM1
|
|
.endm
|
|
|
|
/* GHASH the last 4 ciphertext blocks. */
|
|
.macro GHASH_LAST_4 TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 \
|
|
TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
|
|
|
|
# Multiply TMP6 * HashKey (using Karatsuba)
|
|
|
|
movdqa \XMM1, \TMP6
|
|
pshufd $78, \XMM1, \TMP2
|
|
pxor \XMM1, \TMP2
|
|
movdqu HashKey_4(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP6 # TMP6 = a1*b1
|
|
pclmulqdq $0x00, \TMP5, \XMM1 # XMM1 = a0*b0
|
|
movdqu HashKey_4_k(%arg2), \TMP4
|
|
pclmulqdq $0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
movdqa \XMM1, \XMMDst
|
|
movdqa \TMP2, \XMM1 # result in TMP6, XMMDst, XMM1
|
|
|
|
# Multiply TMP1 * HashKey (using Karatsuba)
|
|
|
|
movdqa \XMM2, \TMP1
|
|
pshufd $78, \XMM2, \TMP2
|
|
pxor \XMM2, \TMP2
|
|
movdqu HashKey_3(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
pclmulqdq $0x00, \TMP5, \XMM2 # XMM2 = a0*b0
|
|
movdqu HashKey_3_k(%arg2), \TMP4
|
|
pclmulqdq $0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
pxor \TMP1, \TMP6
|
|
pxor \XMM2, \XMMDst
|
|
pxor \TMP2, \XMM1
|
|
# results accumulated in TMP6, XMMDst, XMM1
|
|
|
|
# Multiply TMP1 * HashKey (using Karatsuba)
|
|
|
|
movdqa \XMM3, \TMP1
|
|
pshufd $78, \XMM3, \TMP2
|
|
pxor \XMM3, \TMP2
|
|
movdqu HashKey_2(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
pclmulqdq $0x00, \TMP5, \XMM3 # XMM3 = a0*b0
|
|
movdqu HashKey_2_k(%arg2), \TMP4
|
|
pclmulqdq $0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
pxor \TMP1, \TMP6
|
|
pxor \XMM3, \XMMDst
|
|
pxor \TMP2, \XMM1 # results accumulated in TMP6, XMMDst, XMM1
|
|
|
|
# Multiply TMP1 * HashKey (using Karatsuba)
|
|
movdqa \XMM4, \TMP1
|
|
pshufd $78, \XMM4, \TMP2
|
|
pxor \XMM4, \TMP2
|
|
movdqu HashKey(%arg2), \TMP5
|
|
pclmulqdq $0x11, \TMP5, \TMP1 # TMP1 = a1*b1
|
|
pclmulqdq $0x00, \TMP5, \XMM4 # XMM4 = a0*b0
|
|
movdqu HashKey_k(%arg2), \TMP4
|
|
pclmulqdq $0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0)
|
|
pxor \TMP1, \TMP6
|
|
pxor \XMM4, \XMMDst
|
|
pxor \XMM1, \TMP2
|
|
pxor \TMP6, \TMP2
|
|
pxor \XMMDst, \TMP2
|
|
# middle section of the temp results combined as in karatsuba algorithm
|
|
movdqa \TMP2, \TMP4
|
|
pslldq $8, \TMP4 # left shift TMP4 2 DWs
|
|
psrldq $8, \TMP2 # right shift TMP2 2 DWs
|
|
pxor \TMP4, \XMMDst
|
|
pxor \TMP2, \TMP6
|
|
# TMP6:XMMDst holds the result of the accumulated carry-less multiplications
|
|
# first phase of the reduction
|
|
movdqa \XMMDst, \TMP2
|
|
movdqa \XMMDst, \TMP3
|
|
movdqa \XMMDst, \TMP4
|
|
# move XMMDst into TMP2, TMP3, TMP4 in order to perform 3 shifts independently
|
|
pslld $31, \TMP2 # packed right shifting << 31
|
|
pslld $30, \TMP3 # packed right shifting << 30
|
|
pslld $25, \TMP4 # packed right shifting << 25
|
|
pxor \TMP3, \TMP2 # xor the shifted versions
|
|
pxor \TMP4, \TMP2
|
|
movdqa \TMP2, \TMP7
|
|
psrldq $4, \TMP7 # right shift TMP7 1 DW
|
|
pslldq $12, \TMP2 # left shift TMP2 3 DWs
|
|
pxor \TMP2, \XMMDst
|
|
|
|
# second phase of the reduction
|
|
movdqa \XMMDst, \TMP2
|
|
# make 3 copies of XMMDst for doing 3 shift operations
|
|
movdqa \XMMDst, \TMP3
|
|
movdqa \XMMDst, \TMP4
|
|
psrld $1, \TMP2 # packed left shift >> 1
|
|
psrld $2, \TMP3 # packed left shift >> 2
|
|
psrld $7, \TMP4 # packed left shift >> 7
|
|
pxor \TMP3, \TMP2 # xor the shifted versions
|
|
pxor \TMP4, \TMP2
|
|
pxor \TMP7, \TMP2
|
|
pxor \TMP2, \XMMDst
|
|
pxor \TMP6, \XMMDst # reduced result is in XMMDst
|
|
.endm
|
|
|
|
|
|
/* Encryption of a single block
|
|
* uses eax & r10
|
|
*/
|
|
|
|
.macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1
|
|
|
|
pxor (%arg1), \XMM0
|
|
mov keysize,%eax
|
|
shr $2,%eax # 128->4, 192->6, 256->8
|
|
add $5,%eax # 128->9, 192->11, 256->13
|
|
lea 16(%arg1), %r10 # get first expanded key address
|
|
|
|
_esb_loop_\@:
|
|
MOVADQ (%r10),\TMP1
|
|
aesenc \TMP1,\XMM0
|
|
add $16,%r10
|
|
sub $1,%eax
|
|
jnz _esb_loop_\@
|
|
|
|
MOVADQ (%r10),\TMP1
|
|
aesenclast \TMP1,\XMM0
|
|
.endm
|
|
/*****************************************************************************
|
|
* void aesni_gcm_dec(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
|
|
* struct gcm_context_data *data
|
|
* // Context data
|
|
* u8 *out, // Plaintext output. Encrypt in-place is allowed.
|
|
* const u8 *in, // Ciphertext input
|
|
* u64 plaintext_len, // Length of data in bytes for decryption.
|
|
* u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association)
|
|
* // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload)
|
|
* // concatenated with 0x00000001. 16-byte aligned pointer.
|
|
* u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary.
|
|
* const u8 *aad, // Additional Authentication Data (AAD)
|
|
* u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes
|
|
* u8 *auth_tag, // Authenticated Tag output. The driver will compare this to the
|
|
* // given authentication tag and only return the plaintext if they match.
|
|
* u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16
|
|
* // (most likely), 12 or 8.
|
|
*
|
|
* Assumptions:
|
|
*
|
|
* keys:
|
|
* keys are pre-expanded and aligned to 16 bytes. we are using the first
|
|
* set of 11 keys in the data structure void *aes_ctx
|
|
*
|
|
* iv:
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Salt (From the SA) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Initialization Vector |
|
|
* | (This is the sequence number from IPSec header) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 0x1 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*
|
|
*
|
|
*
|
|
* AAD:
|
|
* AAD padded to 128 bits with 0
|
|
* for example, assume AAD is a u32 vector
|
|
*
|
|
* if AAD is 8 bytes:
|
|
* AAD[3] = {A0, A1};
|
|
* padded AAD in xmm register = {A1 A0 0 0}
|
|
*
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | SPI (A1) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 32-bit Sequence Number (A0) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 0x0 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*
|
|
* AAD Format with 32-bit Sequence Number
|
|
*
|
|
* if AAD is 12 bytes:
|
|
* AAD[3] = {A0, A1, A2};
|
|
* padded AAD in xmm register = {A2 A1 A0 0}
|
|
*
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | SPI (A2) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 64-bit Extended Sequence Number {A1,A0} |
|
|
* | |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 0x0 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*
|
|
* AAD Format with 64-bit Extended Sequence Number
|
|
*
|
|
* poly = x^128 + x^127 + x^126 + x^121 + 1
|
|
*
|
|
*****************************************************************************/
|
|
SYM_FUNC_START(aesni_gcm_dec)
|
|
FUNC_SAVE
|
|
|
|
GCM_INIT %arg6, arg7, arg8, arg9
|
|
GCM_ENC_DEC dec
|
|
GCM_COMPLETE arg10, arg11
|
|
FUNC_RESTORE
|
|
RET
|
|
SYM_FUNC_END(aesni_gcm_dec)
|
|
|
|
|
|
/*****************************************************************************
|
|
* void aesni_gcm_enc(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
|
|
* struct gcm_context_data *data
|
|
* // Context data
|
|
* u8 *out, // Ciphertext output. Encrypt in-place is allowed.
|
|
* const u8 *in, // Plaintext input
|
|
* u64 plaintext_len, // Length of data in bytes for encryption.
|
|
* u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association)
|
|
* // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload)
|
|
* // concatenated with 0x00000001. 16-byte aligned pointer.
|
|
* u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary.
|
|
* const u8 *aad, // Additional Authentication Data (AAD)
|
|
* u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes
|
|
* u8 *auth_tag, // Authenticated Tag output.
|
|
* u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely),
|
|
* // 12 or 8.
|
|
*
|
|
* Assumptions:
|
|
*
|
|
* keys:
|
|
* keys are pre-expanded and aligned to 16 bytes. we are using the
|
|
* first set of 11 keys in the data structure void *aes_ctx
|
|
*
|
|
*
|
|
* iv:
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Salt (From the SA) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Initialization Vector |
|
|
* | (This is the sequence number from IPSec header) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 0x1 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*
|
|
*
|
|
*
|
|
* AAD:
|
|
* AAD padded to 128 bits with 0
|
|
* for example, assume AAD is a u32 vector
|
|
*
|
|
* if AAD is 8 bytes:
|
|
* AAD[3] = {A0, A1};
|
|
* padded AAD in xmm register = {A1 A0 0 0}
|
|
*
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | SPI (A1) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 32-bit Sequence Number (A0) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 0x0 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*
|
|
* AAD Format with 32-bit Sequence Number
|
|
*
|
|
* if AAD is 12 bytes:
|
|
* AAD[3] = {A0, A1, A2};
|
|
* padded AAD in xmm register = {A2 A1 A0 0}
|
|
*
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | SPI (A2) |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 64-bit Extended Sequence Number {A1,A0} |
|
|
* | |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | 0x0 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*
|
|
* AAD Format with 64-bit Extended Sequence Number
|
|
*
|
|
* poly = x^128 + x^127 + x^126 + x^121 + 1
|
|
***************************************************************************/
|
|
SYM_FUNC_START(aesni_gcm_enc)
|
|
FUNC_SAVE
|
|
|
|
GCM_INIT %arg6, arg7, arg8, arg9
|
|
GCM_ENC_DEC enc
|
|
|
|
GCM_COMPLETE arg10, arg11
|
|
FUNC_RESTORE
|
|
RET
|
|
SYM_FUNC_END(aesni_gcm_enc)
|
|
|
|
/*****************************************************************************
|
|
* void aesni_gcm_init(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
|
|
* struct gcm_context_data *data,
|
|
* // context data
|
|
* u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association)
|
|
* // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload)
|
|
* // concatenated with 0x00000001. 16-byte aligned pointer.
|
|
* u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary.
|
|
* const u8 *aad, // Additional Authentication Data (AAD)
|
|
* u64 aad_len) // Length of AAD in bytes.
|
|
*/
|
|
SYM_FUNC_START(aesni_gcm_init)
|
|
FUNC_SAVE
|
|
GCM_INIT %arg3, %arg4,%arg5, %arg6
|
|
FUNC_RESTORE
|
|
RET
|
|
SYM_FUNC_END(aesni_gcm_init)
|
|
|
|
/*****************************************************************************
|
|
* void aesni_gcm_enc_update(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
|
|
* struct gcm_context_data *data,
|
|
* // context data
|
|
* u8 *out, // Ciphertext output. Encrypt in-place is allowed.
|
|
* const u8 *in, // Plaintext input
|
|
* u64 plaintext_len, // Length of data in bytes for encryption.
|
|
*/
|
|
SYM_FUNC_START(aesni_gcm_enc_update)
|
|
FUNC_SAVE
|
|
GCM_ENC_DEC enc
|
|
FUNC_RESTORE
|
|
RET
|
|
SYM_FUNC_END(aesni_gcm_enc_update)
|
|
|
|
/*****************************************************************************
|
|
* void aesni_gcm_dec_update(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
|
|
* struct gcm_context_data *data,
|
|
* // context data
|
|
* u8 *out, // Ciphertext output. Encrypt in-place is allowed.
|
|
* const u8 *in, // Plaintext input
|
|
* u64 plaintext_len, // Length of data in bytes for encryption.
|
|
*/
|
|
SYM_FUNC_START(aesni_gcm_dec_update)
|
|
FUNC_SAVE
|
|
GCM_ENC_DEC dec
|
|
FUNC_RESTORE
|
|
RET
|
|
SYM_FUNC_END(aesni_gcm_dec_update)
|
|
|
|
/*****************************************************************************
|
|
* void aesni_gcm_finalize(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary.
|
|
* struct gcm_context_data *data,
|
|
* // context data
|
|
* u8 *auth_tag, // Authenticated Tag output.
|
|
* u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely),
|
|
* // 12 or 8.
|
|
*/
|
|
SYM_FUNC_START(aesni_gcm_finalize)
|
|
FUNC_SAVE
|
|
GCM_COMPLETE %arg3 %arg4
|
|
FUNC_RESTORE
|
|
RET
|
|
SYM_FUNC_END(aesni_gcm_finalize)
|
|
|
|
#endif
|
|
|
|
SYM_FUNC_START_LOCAL(_key_expansion_256a)
|
|
pshufd $0b11111111, %xmm1, %xmm1
|
|
shufps $0b00010000, %xmm0, %xmm4
|
|
pxor %xmm4, %xmm0
|
|
shufps $0b10001100, %xmm0, %xmm4
|
|
pxor %xmm4, %xmm0
|
|
pxor %xmm1, %xmm0
|
|
movaps %xmm0, (TKEYP)
|
|
add $0x10, TKEYP
|
|
RET
|
|
SYM_FUNC_END(_key_expansion_256a)
|
|
SYM_FUNC_ALIAS_LOCAL(_key_expansion_128, _key_expansion_256a)
|
|
|
|
SYM_FUNC_START_LOCAL(_key_expansion_192a)
|
|
pshufd $0b01010101, %xmm1, %xmm1
|
|
shufps $0b00010000, %xmm0, %xmm4
|
|
pxor %xmm4, %xmm0
|
|
shufps $0b10001100, %xmm0, %xmm4
|
|
pxor %xmm4, %xmm0
|
|
pxor %xmm1, %xmm0
|
|
|
|
movaps %xmm2, %xmm5
|
|
movaps %xmm2, %xmm6
|
|
pslldq $4, %xmm5
|
|
pshufd $0b11111111, %xmm0, %xmm3
|
|
pxor %xmm3, %xmm2
|
|
pxor %xmm5, %xmm2
|
|
|
|
movaps %xmm0, %xmm1
|
|
shufps $0b01000100, %xmm0, %xmm6
|
|
movaps %xmm6, (TKEYP)
|
|
shufps $0b01001110, %xmm2, %xmm1
|
|
movaps %xmm1, 0x10(TKEYP)
|
|
add $0x20, TKEYP
|
|
RET
|
|
SYM_FUNC_END(_key_expansion_192a)
|
|
|
|
SYM_FUNC_START_LOCAL(_key_expansion_192b)
|
|
pshufd $0b01010101, %xmm1, %xmm1
|
|
shufps $0b00010000, %xmm0, %xmm4
|
|
pxor %xmm4, %xmm0
|
|
shufps $0b10001100, %xmm0, %xmm4
|
|
pxor %xmm4, %xmm0
|
|
pxor %xmm1, %xmm0
|
|
|
|
movaps %xmm2, %xmm5
|
|
pslldq $4, %xmm5
|
|
pshufd $0b11111111, %xmm0, %xmm3
|
|
pxor %xmm3, %xmm2
|
|
pxor %xmm5, %xmm2
|
|
|
|
movaps %xmm0, (TKEYP)
|
|
add $0x10, TKEYP
|
|
RET
|
|
SYM_FUNC_END(_key_expansion_192b)
|
|
|
|
SYM_FUNC_START_LOCAL(_key_expansion_256b)
|
|
pshufd $0b10101010, %xmm1, %xmm1
|
|
shufps $0b00010000, %xmm2, %xmm4
|
|
pxor %xmm4, %xmm2
|
|
shufps $0b10001100, %xmm2, %xmm4
|
|
pxor %xmm4, %xmm2
|
|
pxor %xmm1, %xmm2
|
|
movaps %xmm2, (TKEYP)
|
|
add $0x10, TKEYP
|
|
RET
|
|
SYM_FUNC_END(_key_expansion_256b)
|
|
|
|
/*
|
|
* int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
|
|
* unsigned int key_len)
|
|
*/
|
|
SYM_FUNC_START(aesni_set_key)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl KEYP
|
|
movl (FRAME_OFFSET+8)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+12)(%esp), UKEYP # in_key
|
|
movl (FRAME_OFFSET+16)(%esp), %edx # key_len
|
|
#endif
|
|
movups (UKEYP), %xmm0 # user key (first 16 bytes)
|
|
movaps %xmm0, (KEYP)
|
|
lea 0x10(KEYP), TKEYP # key addr
|
|
movl %edx, 480(KEYP)
|
|
pxor %xmm4, %xmm4 # xmm4 is assumed 0 in _key_expansion_x
|
|
cmp $24, %dl
|
|
jb .Lenc_key128
|
|
je .Lenc_key192
|
|
movups 0x10(UKEYP), %xmm2 # other user key
|
|
movaps %xmm2, (TKEYP)
|
|
add $0x10, TKEYP
|
|
aeskeygenassist $0x1, %xmm2, %xmm1 # round 1
|
|
call _key_expansion_256a
|
|
aeskeygenassist $0x1, %xmm0, %xmm1
|
|
call _key_expansion_256b
|
|
aeskeygenassist $0x2, %xmm2, %xmm1 # round 2
|
|
call _key_expansion_256a
|
|
aeskeygenassist $0x2, %xmm0, %xmm1
|
|
call _key_expansion_256b
|
|
aeskeygenassist $0x4, %xmm2, %xmm1 # round 3
|
|
call _key_expansion_256a
|
|
aeskeygenassist $0x4, %xmm0, %xmm1
|
|
call _key_expansion_256b
|
|
aeskeygenassist $0x8, %xmm2, %xmm1 # round 4
|
|
call _key_expansion_256a
|
|
aeskeygenassist $0x8, %xmm0, %xmm1
|
|
call _key_expansion_256b
|
|
aeskeygenassist $0x10, %xmm2, %xmm1 # round 5
|
|
call _key_expansion_256a
|
|
aeskeygenassist $0x10, %xmm0, %xmm1
|
|
call _key_expansion_256b
|
|
aeskeygenassist $0x20, %xmm2, %xmm1 # round 6
|
|
call _key_expansion_256a
|
|
aeskeygenassist $0x20, %xmm0, %xmm1
|
|
call _key_expansion_256b
|
|
aeskeygenassist $0x40, %xmm2, %xmm1 # round 7
|
|
call _key_expansion_256a
|
|
jmp .Ldec_key
|
|
.Lenc_key192:
|
|
movq 0x10(UKEYP), %xmm2 # other user key
|
|
aeskeygenassist $0x1, %xmm2, %xmm1 # round 1
|
|
call _key_expansion_192a
|
|
aeskeygenassist $0x2, %xmm2, %xmm1 # round 2
|
|
call _key_expansion_192b
|
|
aeskeygenassist $0x4, %xmm2, %xmm1 # round 3
|
|
call _key_expansion_192a
|
|
aeskeygenassist $0x8, %xmm2, %xmm1 # round 4
|
|
call _key_expansion_192b
|
|
aeskeygenassist $0x10, %xmm2, %xmm1 # round 5
|
|
call _key_expansion_192a
|
|
aeskeygenassist $0x20, %xmm2, %xmm1 # round 6
|
|
call _key_expansion_192b
|
|
aeskeygenassist $0x40, %xmm2, %xmm1 # round 7
|
|
call _key_expansion_192a
|
|
aeskeygenassist $0x80, %xmm2, %xmm1 # round 8
|
|
call _key_expansion_192b
|
|
jmp .Ldec_key
|
|
.Lenc_key128:
|
|
aeskeygenassist $0x1, %xmm0, %xmm1 # round 1
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x2, %xmm0, %xmm1 # round 2
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x4, %xmm0, %xmm1 # round 3
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x8, %xmm0, %xmm1 # round 4
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x10, %xmm0, %xmm1 # round 5
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x20, %xmm0, %xmm1 # round 6
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x40, %xmm0, %xmm1 # round 7
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x80, %xmm0, %xmm1 # round 8
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x1b, %xmm0, %xmm1 # round 9
|
|
call _key_expansion_128
|
|
aeskeygenassist $0x36, %xmm0, %xmm1 # round 10
|
|
call _key_expansion_128
|
|
.Ldec_key:
|
|
sub $0x10, TKEYP
|
|
movaps (KEYP), %xmm0
|
|
movaps (TKEYP), %xmm1
|
|
movaps %xmm0, 240(TKEYP)
|
|
movaps %xmm1, 240(KEYP)
|
|
add $0x10, KEYP
|
|
lea 240-16(TKEYP), UKEYP
|
|
.align 4
|
|
.Ldec_key_loop:
|
|
movaps (KEYP), %xmm0
|
|
aesimc %xmm0, %xmm1
|
|
movaps %xmm1, (UKEYP)
|
|
add $0x10, KEYP
|
|
sub $0x10, UKEYP
|
|
cmp TKEYP, KEYP
|
|
jb .Ldec_key_loop
|
|
xor AREG, AREG
|
|
#ifndef __x86_64__
|
|
popl KEYP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_set_key)
|
|
|
|
/*
|
|
* void aesni_enc(const void *ctx, u8 *dst, const u8 *src)
|
|
*/
|
|
SYM_FUNC_START(aesni_enc)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+12)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+16)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+20)(%esp), INP # src
|
|
#endif
|
|
movl 480(KEYP), KLEN # key length
|
|
movups (INP), STATE # input
|
|
call _aesni_enc1
|
|
movups STATE, (OUTP) # output
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_enc)
|
|
|
|
/*
|
|
* _aesni_enc1: internal ABI
|
|
* input:
|
|
* KEYP: key struct pointer
|
|
* KLEN: round count
|
|
* STATE: initial state (input)
|
|
* output:
|
|
* STATE: finial state (output)
|
|
* changed:
|
|
* KEY
|
|
* TKEYP (T1)
|
|
*/
|
|
SYM_FUNC_START_LOCAL(_aesni_enc1)
|
|
movaps (KEYP), KEY # key
|
|
mov KEYP, TKEYP
|
|
pxor KEY, STATE # round 0
|
|
add $0x30, TKEYP
|
|
cmp $24, KLEN
|
|
jb .Lenc128
|
|
lea 0x20(TKEYP), TKEYP
|
|
je .Lenc192
|
|
add $0x20, TKEYP
|
|
movaps -0x60(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps -0x50(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
.align 4
|
|
.Lenc192:
|
|
movaps -0x40(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps -0x30(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
.align 4
|
|
.Lenc128:
|
|
movaps -0x20(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps -0x10(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps (TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x10(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x20(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x30(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x40(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x50(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x60(TKEYP), KEY
|
|
aesenc KEY, STATE
|
|
movaps 0x70(TKEYP), KEY
|
|
aesenclast KEY, STATE
|
|
RET
|
|
SYM_FUNC_END(_aesni_enc1)
|
|
|
|
/*
|
|
* _aesni_enc4: internal ABI
|
|
* input:
|
|
* KEYP: key struct pointer
|
|
* KLEN: round count
|
|
* STATE1: initial state (input)
|
|
* STATE2
|
|
* STATE3
|
|
* STATE4
|
|
* output:
|
|
* STATE1: finial state (output)
|
|
* STATE2
|
|
* STATE3
|
|
* STATE4
|
|
* changed:
|
|
* KEY
|
|
* TKEYP (T1)
|
|
*/
|
|
SYM_FUNC_START_LOCAL(_aesni_enc4)
|
|
movaps (KEYP), KEY # key
|
|
mov KEYP, TKEYP
|
|
pxor KEY, STATE1 # round 0
|
|
pxor KEY, STATE2
|
|
pxor KEY, STATE3
|
|
pxor KEY, STATE4
|
|
add $0x30, TKEYP
|
|
cmp $24, KLEN
|
|
jb .L4enc128
|
|
lea 0x20(TKEYP), TKEYP
|
|
je .L4enc192
|
|
add $0x20, TKEYP
|
|
movaps -0x60(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps -0x50(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
#.align 4
|
|
.L4enc192:
|
|
movaps -0x40(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps -0x30(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
#.align 4
|
|
.L4enc128:
|
|
movaps -0x20(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps -0x10(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps (TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x10(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x20(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x30(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x40(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x50(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x60(TKEYP), KEY
|
|
aesenc KEY, STATE1
|
|
aesenc KEY, STATE2
|
|
aesenc KEY, STATE3
|
|
aesenc KEY, STATE4
|
|
movaps 0x70(TKEYP), KEY
|
|
aesenclast KEY, STATE1 # last round
|
|
aesenclast KEY, STATE2
|
|
aesenclast KEY, STATE3
|
|
aesenclast KEY, STATE4
|
|
RET
|
|
SYM_FUNC_END(_aesni_enc4)
|
|
|
|
/*
|
|
* void aesni_dec (const void *ctx, u8 *dst, const u8 *src)
|
|
*/
|
|
SYM_FUNC_START(aesni_dec)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+12)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+16)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+20)(%esp), INP # src
|
|
#endif
|
|
mov 480(KEYP), KLEN # key length
|
|
add $240, KEYP
|
|
movups (INP), STATE # input
|
|
call _aesni_dec1
|
|
movups STATE, (OUTP) #output
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_dec)
|
|
|
|
/*
|
|
* _aesni_dec1: internal ABI
|
|
* input:
|
|
* KEYP: key struct pointer
|
|
* KLEN: key length
|
|
* STATE: initial state (input)
|
|
* output:
|
|
* STATE: finial state (output)
|
|
* changed:
|
|
* KEY
|
|
* TKEYP (T1)
|
|
*/
|
|
SYM_FUNC_START_LOCAL(_aesni_dec1)
|
|
movaps (KEYP), KEY # key
|
|
mov KEYP, TKEYP
|
|
pxor KEY, STATE # round 0
|
|
add $0x30, TKEYP
|
|
cmp $24, KLEN
|
|
jb .Ldec128
|
|
lea 0x20(TKEYP), TKEYP
|
|
je .Ldec192
|
|
add $0x20, TKEYP
|
|
movaps -0x60(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps -0x50(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
.align 4
|
|
.Ldec192:
|
|
movaps -0x40(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps -0x30(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
.align 4
|
|
.Ldec128:
|
|
movaps -0x20(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps -0x10(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps (TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x10(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x20(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x30(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x40(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x50(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x60(TKEYP), KEY
|
|
aesdec KEY, STATE
|
|
movaps 0x70(TKEYP), KEY
|
|
aesdeclast KEY, STATE
|
|
RET
|
|
SYM_FUNC_END(_aesni_dec1)
|
|
|
|
/*
|
|
* _aesni_dec4: internal ABI
|
|
* input:
|
|
* KEYP: key struct pointer
|
|
* KLEN: key length
|
|
* STATE1: initial state (input)
|
|
* STATE2
|
|
* STATE3
|
|
* STATE4
|
|
* output:
|
|
* STATE1: finial state (output)
|
|
* STATE2
|
|
* STATE3
|
|
* STATE4
|
|
* changed:
|
|
* KEY
|
|
* TKEYP (T1)
|
|
*/
|
|
SYM_FUNC_START_LOCAL(_aesni_dec4)
|
|
movaps (KEYP), KEY # key
|
|
mov KEYP, TKEYP
|
|
pxor KEY, STATE1 # round 0
|
|
pxor KEY, STATE2
|
|
pxor KEY, STATE3
|
|
pxor KEY, STATE4
|
|
add $0x30, TKEYP
|
|
cmp $24, KLEN
|
|
jb .L4dec128
|
|
lea 0x20(TKEYP), TKEYP
|
|
je .L4dec192
|
|
add $0x20, TKEYP
|
|
movaps -0x60(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps -0x50(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
.align 4
|
|
.L4dec192:
|
|
movaps -0x40(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps -0x30(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
.align 4
|
|
.L4dec128:
|
|
movaps -0x20(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps -0x10(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps (TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x10(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x20(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x30(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x40(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x50(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x60(TKEYP), KEY
|
|
aesdec KEY, STATE1
|
|
aesdec KEY, STATE2
|
|
aesdec KEY, STATE3
|
|
aesdec KEY, STATE4
|
|
movaps 0x70(TKEYP), KEY
|
|
aesdeclast KEY, STATE1 # last round
|
|
aesdeclast KEY, STATE2
|
|
aesdeclast KEY, STATE3
|
|
aesdeclast KEY, STATE4
|
|
RET
|
|
SYM_FUNC_END(_aesni_dec4)
|
|
|
|
/*
|
|
* void aesni_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len)
|
|
*/
|
|
SYM_FUNC_START(aesni_ecb_enc)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+16)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+20)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+24)(%esp), INP # src
|
|
movl (FRAME_OFFSET+28)(%esp), LEN # len
|
|
#endif
|
|
test LEN, LEN # check length
|
|
jz .Lecb_enc_ret
|
|
mov 480(KEYP), KLEN
|
|
cmp $16, LEN
|
|
jb .Lecb_enc_ret
|
|
cmp $64, LEN
|
|
jb .Lecb_enc_loop1
|
|
.align 4
|
|
.Lecb_enc_loop4:
|
|
movups (INP), STATE1
|
|
movups 0x10(INP), STATE2
|
|
movups 0x20(INP), STATE3
|
|
movups 0x30(INP), STATE4
|
|
call _aesni_enc4
|
|
movups STATE1, (OUTP)
|
|
movups STATE2, 0x10(OUTP)
|
|
movups STATE3, 0x20(OUTP)
|
|
movups STATE4, 0x30(OUTP)
|
|
sub $64, LEN
|
|
add $64, INP
|
|
add $64, OUTP
|
|
cmp $64, LEN
|
|
jge .Lecb_enc_loop4
|
|
cmp $16, LEN
|
|
jb .Lecb_enc_ret
|
|
.align 4
|
|
.Lecb_enc_loop1:
|
|
movups (INP), STATE1
|
|
call _aesni_enc1
|
|
movups STATE1, (OUTP)
|
|
sub $16, LEN
|
|
add $16, INP
|
|
add $16, OUTP
|
|
cmp $16, LEN
|
|
jge .Lecb_enc_loop1
|
|
.Lecb_enc_ret:
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_ecb_enc)
|
|
|
|
/*
|
|
* void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len);
|
|
*/
|
|
SYM_FUNC_START(aesni_ecb_dec)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+16)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+20)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+24)(%esp), INP # src
|
|
movl (FRAME_OFFSET+28)(%esp), LEN # len
|
|
#endif
|
|
test LEN, LEN
|
|
jz .Lecb_dec_ret
|
|
mov 480(KEYP), KLEN
|
|
add $240, KEYP
|
|
cmp $16, LEN
|
|
jb .Lecb_dec_ret
|
|
cmp $64, LEN
|
|
jb .Lecb_dec_loop1
|
|
.align 4
|
|
.Lecb_dec_loop4:
|
|
movups (INP), STATE1
|
|
movups 0x10(INP), STATE2
|
|
movups 0x20(INP), STATE3
|
|
movups 0x30(INP), STATE4
|
|
call _aesni_dec4
|
|
movups STATE1, (OUTP)
|
|
movups STATE2, 0x10(OUTP)
|
|
movups STATE3, 0x20(OUTP)
|
|
movups STATE4, 0x30(OUTP)
|
|
sub $64, LEN
|
|
add $64, INP
|
|
add $64, OUTP
|
|
cmp $64, LEN
|
|
jge .Lecb_dec_loop4
|
|
cmp $16, LEN
|
|
jb .Lecb_dec_ret
|
|
.align 4
|
|
.Lecb_dec_loop1:
|
|
movups (INP), STATE1
|
|
call _aesni_dec1
|
|
movups STATE1, (OUTP)
|
|
sub $16, LEN
|
|
add $16, INP
|
|
add $16, OUTP
|
|
cmp $16, LEN
|
|
jge .Lecb_dec_loop1
|
|
.Lecb_dec_ret:
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_ecb_dec)
|
|
|
|
/*
|
|
* void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len, u8 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_cbc_enc)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl IVP
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+24)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+28)(%esp), INP # src
|
|
movl (FRAME_OFFSET+32)(%esp), LEN # len
|
|
movl (FRAME_OFFSET+36)(%esp), IVP # iv
|
|
#endif
|
|
cmp $16, LEN
|
|
jb .Lcbc_enc_ret
|
|
mov 480(KEYP), KLEN
|
|
movups (IVP), STATE # load iv as initial state
|
|
.align 4
|
|
.Lcbc_enc_loop:
|
|
movups (INP), IN # load input
|
|
pxor IN, STATE
|
|
call _aesni_enc1
|
|
movups STATE, (OUTP) # store output
|
|
sub $16, LEN
|
|
add $16, INP
|
|
add $16, OUTP
|
|
cmp $16, LEN
|
|
jge .Lcbc_enc_loop
|
|
movups STATE, (IVP)
|
|
.Lcbc_enc_ret:
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
popl IVP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_cbc_enc)
|
|
|
|
/*
|
|
* void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len, u8 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_cbc_dec)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl IVP
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+24)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+28)(%esp), INP # src
|
|
movl (FRAME_OFFSET+32)(%esp), LEN # len
|
|
movl (FRAME_OFFSET+36)(%esp), IVP # iv
|
|
#endif
|
|
cmp $16, LEN
|
|
jb .Lcbc_dec_just_ret
|
|
mov 480(KEYP), KLEN
|
|
add $240, KEYP
|
|
movups (IVP), IV
|
|
cmp $64, LEN
|
|
jb .Lcbc_dec_loop1
|
|
.align 4
|
|
.Lcbc_dec_loop4:
|
|
movups (INP), IN1
|
|
movaps IN1, STATE1
|
|
movups 0x10(INP), IN2
|
|
movaps IN2, STATE2
|
|
#ifdef __x86_64__
|
|
movups 0x20(INP), IN3
|
|
movaps IN3, STATE3
|
|
movups 0x30(INP), IN4
|
|
movaps IN4, STATE4
|
|
#else
|
|
movups 0x20(INP), IN1
|
|
movaps IN1, STATE3
|
|
movups 0x30(INP), IN2
|
|
movaps IN2, STATE4
|
|
#endif
|
|
call _aesni_dec4
|
|
pxor IV, STATE1
|
|
#ifdef __x86_64__
|
|
pxor IN1, STATE2
|
|
pxor IN2, STATE3
|
|
pxor IN3, STATE4
|
|
movaps IN4, IV
|
|
#else
|
|
pxor IN1, STATE4
|
|
movaps IN2, IV
|
|
movups (INP), IN1
|
|
pxor IN1, STATE2
|
|
movups 0x10(INP), IN2
|
|
pxor IN2, STATE3
|
|
#endif
|
|
movups STATE1, (OUTP)
|
|
movups STATE2, 0x10(OUTP)
|
|
movups STATE3, 0x20(OUTP)
|
|
movups STATE4, 0x30(OUTP)
|
|
sub $64, LEN
|
|
add $64, INP
|
|
add $64, OUTP
|
|
cmp $64, LEN
|
|
jge .Lcbc_dec_loop4
|
|
cmp $16, LEN
|
|
jb .Lcbc_dec_ret
|
|
.align 4
|
|
.Lcbc_dec_loop1:
|
|
movups (INP), IN
|
|
movaps IN, STATE
|
|
call _aesni_dec1
|
|
pxor IV, STATE
|
|
movups STATE, (OUTP)
|
|
movaps IN, IV
|
|
sub $16, LEN
|
|
add $16, INP
|
|
add $16, OUTP
|
|
cmp $16, LEN
|
|
jge .Lcbc_dec_loop1
|
|
.Lcbc_dec_ret:
|
|
movups IV, (IVP)
|
|
.Lcbc_dec_just_ret:
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
popl IVP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_cbc_dec)
|
|
|
|
/*
|
|
* void aesni_cts_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len, u8 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_cts_cbc_enc)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl IVP
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+24)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+28)(%esp), INP # src
|
|
movl (FRAME_OFFSET+32)(%esp), LEN # len
|
|
movl (FRAME_OFFSET+36)(%esp), IVP # iv
|
|
lea .Lcts_permute_table, T1
|
|
#else
|
|
lea .Lcts_permute_table(%rip), T1
|
|
#endif
|
|
mov 480(KEYP), KLEN
|
|
movups (IVP), STATE
|
|
sub $16, LEN
|
|
mov T1, IVP
|
|
add $32, IVP
|
|
add LEN, T1
|
|
sub LEN, IVP
|
|
movups (T1), %xmm4
|
|
movups (IVP), %xmm5
|
|
|
|
movups (INP), IN1
|
|
add LEN, INP
|
|
movups (INP), IN2
|
|
|
|
pxor IN1, STATE
|
|
call _aesni_enc1
|
|
|
|
pshufb %xmm5, IN2
|
|
pxor STATE, IN2
|
|
pshufb %xmm4, STATE
|
|
add OUTP, LEN
|
|
movups STATE, (LEN)
|
|
|
|
movaps IN2, STATE
|
|
call _aesni_enc1
|
|
movups STATE, (OUTP)
|
|
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
popl IVP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_cts_cbc_enc)
|
|
|
|
/*
|
|
* void aesni_cts_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len, u8 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_cts_cbc_dec)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl IVP
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+24)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+28)(%esp), INP # src
|
|
movl (FRAME_OFFSET+32)(%esp), LEN # len
|
|
movl (FRAME_OFFSET+36)(%esp), IVP # iv
|
|
lea .Lcts_permute_table, T1
|
|
#else
|
|
lea .Lcts_permute_table(%rip), T1
|
|
#endif
|
|
mov 480(KEYP), KLEN
|
|
add $240, KEYP
|
|
movups (IVP), IV
|
|
sub $16, LEN
|
|
mov T1, IVP
|
|
add $32, IVP
|
|
add LEN, T1
|
|
sub LEN, IVP
|
|
movups (T1), %xmm4
|
|
|
|
movups (INP), STATE
|
|
add LEN, INP
|
|
movups (INP), IN1
|
|
|
|
call _aesni_dec1
|
|
movaps STATE, IN2
|
|
pshufb %xmm4, STATE
|
|
pxor IN1, STATE
|
|
|
|
add OUTP, LEN
|
|
movups STATE, (LEN)
|
|
|
|
movups (IVP), %xmm0
|
|
pshufb %xmm0, IN1
|
|
pblendvb IN2, IN1
|
|
movaps IN1, STATE
|
|
call _aesni_dec1
|
|
|
|
pxor IV, STATE
|
|
movups STATE, (OUTP)
|
|
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
popl IVP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_cts_cbc_dec)
|
|
|
|
.pushsection .rodata
|
|
.align 16
|
|
.Lcts_permute_table:
|
|
.byte 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80
|
|
.byte 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80
|
|
.byte 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
|
|
.byte 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
|
|
.byte 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80
|
|
.byte 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80
|
|
#ifdef __x86_64__
|
|
.Lbswap_mask:
|
|
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
|
|
#endif
|
|
.popsection
|
|
|
|
#ifdef __x86_64__
|
|
/*
|
|
* _aesni_inc_init: internal ABI
|
|
* setup registers used by _aesni_inc
|
|
* input:
|
|
* IV
|
|
* output:
|
|
* CTR: == IV, in little endian
|
|
* TCTR_LOW: == lower qword of CTR
|
|
* INC: == 1, in little endian
|
|
* BSWAP_MASK == endian swapping mask
|
|
*/
|
|
SYM_FUNC_START_LOCAL(_aesni_inc_init)
|
|
movaps .Lbswap_mask(%rip), BSWAP_MASK
|
|
movaps IV, CTR
|
|
pshufb BSWAP_MASK, CTR
|
|
mov $1, TCTR_LOW
|
|
movq TCTR_LOW, INC
|
|
movq CTR, TCTR_LOW
|
|
RET
|
|
SYM_FUNC_END(_aesni_inc_init)
|
|
|
|
/*
|
|
* _aesni_inc: internal ABI
|
|
* Increase IV by 1, IV is in big endian
|
|
* input:
|
|
* IV
|
|
* CTR: == IV, in little endian
|
|
* TCTR_LOW: == lower qword of CTR
|
|
* INC: == 1, in little endian
|
|
* BSWAP_MASK == endian swapping mask
|
|
* output:
|
|
* IV: Increase by 1
|
|
* changed:
|
|
* CTR: == output IV, in little endian
|
|
* TCTR_LOW: == lower qword of CTR
|
|
*/
|
|
SYM_FUNC_START_LOCAL(_aesni_inc)
|
|
paddq INC, CTR
|
|
add $1, TCTR_LOW
|
|
jnc .Linc_low
|
|
pslldq $8, INC
|
|
paddq INC, CTR
|
|
psrldq $8, INC
|
|
.Linc_low:
|
|
movaps CTR, IV
|
|
pshufb BSWAP_MASK, IV
|
|
RET
|
|
SYM_FUNC_END(_aesni_inc)
|
|
|
|
/*
|
|
* void aesni_ctr_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
|
|
* size_t len, u8 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_ctr_enc)
|
|
FRAME_BEGIN
|
|
cmp $16, LEN
|
|
jb .Lctr_enc_just_ret
|
|
mov 480(KEYP), KLEN
|
|
movups (IVP), IV
|
|
call _aesni_inc_init
|
|
cmp $64, LEN
|
|
jb .Lctr_enc_loop1
|
|
.align 4
|
|
.Lctr_enc_loop4:
|
|
movaps IV, STATE1
|
|
call _aesni_inc
|
|
movups (INP), IN1
|
|
movaps IV, STATE2
|
|
call _aesni_inc
|
|
movups 0x10(INP), IN2
|
|
movaps IV, STATE3
|
|
call _aesni_inc
|
|
movups 0x20(INP), IN3
|
|
movaps IV, STATE4
|
|
call _aesni_inc
|
|
movups 0x30(INP), IN4
|
|
call _aesni_enc4
|
|
pxor IN1, STATE1
|
|
movups STATE1, (OUTP)
|
|
pxor IN2, STATE2
|
|
movups STATE2, 0x10(OUTP)
|
|
pxor IN3, STATE3
|
|
movups STATE3, 0x20(OUTP)
|
|
pxor IN4, STATE4
|
|
movups STATE4, 0x30(OUTP)
|
|
sub $64, LEN
|
|
add $64, INP
|
|
add $64, OUTP
|
|
cmp $64, LEN
|
|
jge .Lctr_enc_loop4
|
|
cmp $16, LEN
|
|
jb .Lctr_enc_ret
|
|
.align 4
|
|
.Lctr_enc_loop1:
|
|
movaps IV, STATE
|
|
call _aesni_inc
|
|
movups (INP), IN
|
|
call _aesni_enc1
|
|
pxor IN, STATE
|
|
movups STATE, (OUTP)
|
|
sub $16, LEN
|
|
add $16, INP
|
|
add $16, OUTP
|
|
cmp $16, LEN
|
|
jge .Lctr_enc_loop1
|
|
.Lctr_enc_ret:
|
|
movups IV, (IVP)
|
|
.Lctr_enc_just_ret:
|
|
FRAME_END
|
|
RET
|
|
SYM_FUNC_END(aesni_ctr_enc)
|
|
|
|
#endif
|
|
|
|
.section .rodata.cst16.gf128mul_x_ble_mask, "aM", @progbits, 16
|
|
.align 16
|
|
.Lgf128mul_x_ble_mask:
|
|
.octa 0x00000000000000010000000000000087
|
|
.previous
|
|
|
|
/*
|
|
* _aesni_gf128mul_x_ble: internal ABI
|
|
* Multiply in GF(2^128) for XTS IVs
|
|
* input:
|
|
* IV: current IV
|
|
* GF128MUL_MASK == mask with 0x87 and 0x01
|
|
* output:
|
|
* IV: next IV
|
|
* changed:
|
|
* CTR: == temporary value
|
|
*/
|
|
#define _aesni_gf128mul_x_ble() \
|
|
pshufd $0x13, IV, KEY; \
|
|
paddq IV, IV; \
|
|
psrad $31, KEY; \
|
|
pand GF128MUL_MASK, KEY; \
|
|
pxor KEY, IV;
|
|
|
|
/*
|
|
* void aesni_xts_encrypt(const struct crypto_aes_ctx *ctx, u8 *dst,
|
|
* const u8 *src, unsigned int len, le128 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_xts_encrypt)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl IVP
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+24)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+28)(%esp), INP # src
|
|
movl (FRAME_OFFSET+32)(%esp), LEN # len
|
|
movl (FRAME_OFFSET+36)(%esp), IVP # iv
|
|
movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK
|
|
#else
|
|
movdqa .Lgf128mul_x_ble_mask(%rip), GF128MUL_MASK
|
|
#endif
|
|
movups (IVP), IV
|
|
|
|
mov 480(KEYP), KLEN
|
|
|
|
.Lxts_enc_loop4:
|
|
sub $64, LEN
|
|
jl .Lxts_enc_1x
|
|
|
|
movdqa IV, STATE1
|
|
movdqu 0x00(INP), IN
|
|
pxor IN, STATE1
|
|
movdqu IV, 0x00(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
movdqa IV, STATE2
|
|
movdqu 0x10(INP), IN
|
|
pxor IN, STATE2
|
|
movdqu IV, 0x10(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
movdqa IV, STATE3
|
|
movdqu 0x20(INP), IN
|
|
pxor IN, STATE3
|
|
movdqu IV, 0x20(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
movdqa IV, STATE4
|
|
movdqu 0x30(INP), IN
|
|
pxor IN, STATE4
|
|
movdqu IV, 0x30(OUTP)
|
|
|
|
call _aesni_enc4
|
|
|
|
movdqu 0x00(OUTP), IN
|
|
pxor IN, STATE1
|
|
movdqu STATE1, 0x00(OUTP)
|
|
|
|
movdqu 0x10(OUTP), IN
|
|
pxor IN, STATE2
|
|
movdqu STATE2, 0x10(OUTP)
|
|
|
|
movdqu 0x20(OUTP), IN
|
|
pxor IN, STATE3
|
|
movdqu STATE3, 0x20(OUTP)
|
|
|
|
movdqu 0x30(OUTP), IN
|
|
pxor IN, STATE4
|
|
movdqu STATE4, 0x30(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
|
|
add $64, INP
|
|
add $64, OUTP
|
|
test LEN, LEN
|
|
jnz .Lxts_enc_loop4
|
|
|
|
.Lxts_enc_ret_iv:
|
|
movups IV, (IVP)
|
|
|
|
.Lxts_enc_ret:
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
popl IVP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
|
|
.Lxts_enc_1x:
|
|
add $64, LEN
|
|
jz .Lxts_enc_ret_iv
|
|
sub $16, LEN
|
|
jl .Lxts_enc_cts4
|
|
|
|
.Lxts_enc_loop1:
|
|
movdqu (INP), STATE
|
|
pxor IV, STATE
|
|
call _aesni_enc1
|
|
pxor IV, STATE
|
|
_aesni_gf128mul_x_ble()
|
|
|
|
test LEN, LEN
|
|
jz .Lxts_enc_out
|
|
|
|
add $16, INP
|
|
sub $16, LEN
|
|
jl .Lxts_enc_cts1
|
|
|
|
movdqu STATE, (OUTP)
|
|
add $16, OUTP
|
|
jmp .Lxts_enc_loop1
|
|
|
|
.Lxts_enc_out:
|
|
movdqu STATE, (OUTP)
|
|
jmp .Lxts_enc_ret_iv
|
|
|
|
.Lxts_enc_cts4:
|
|
movdqa STATE4, STATE
|
|
sub $16, OUTP
|
|
|
|
.Lxts_enc_cts1:
|
|
#ifndef __x86_64__
|
|
lea .Lcts_permute_table, T1
|
|
#else
|
|
lea .Lcts_permute_table(%rip), T1
|
|
#endif
|
|
add LEN, INP /* rewind input pointer */
|
|
add $16, LEN /* # bytes in final block */
|
|
movups (INP), IN1
|
|
|
|
mov T1, IVP
|
|
add $32, IVP
|
|
add LEN, T1
|
|
sub LEN, IVP
|
|
add OUTP, LEN
|
|
|
|
movups (T1), %xmm4
|
|
movaps STATE, IN2
|
|
pshufb %xmm4, STATE
|
|
movups STATE, (LEN)
|
|
|
|
movups (IVP), %xmm0
|
|
pshufb %xmm0, IN1
|
|
pblendvb IN2, IN1
|
|
movaps IN1, STATE
|
|
|
|
pxor IV, STATE
|
|
call _aesni_enc1
|
|
pxor IV, STATE
|
|
|
|
movups STATE, (OUTP)
|
|
jmp .Lxts_enc_ret
|
|
SYM_FUNC_END(aesni_xts_encrypt)
|
|
|
|
/*
|
|
* void aesni_xts_decrypt(const struct crypto_aes_ctx *ctx, u8 *dst,
|
|
* const u8 *src, unsigned int len, le128 *iv)
|
|
*/
|
|
SYM_FUNC_START(aesni_xts_decrypt)
|
|
FRAME_BEGIN
|
|
#ifndef __x86_64__
|
|
pushl IVP
|
|
pushl LEN
|
|
pushl KEYP
|
|
pushl KLEN
|
|
movl (FRAME_OFFSET+20)(%esp), KEYP # ctx
|
|
movl (FRAME_OFFSET+24)(%esp), OUTP # dst
|
|
movl (FRAME_OFFSET+28)(%esp), INP # src
|
|
movl (FRAME_OFFSET+32)(%esp), LEN # len
|
|
movl (FRAME_OFFSET+36)(%esp), IVP # iv
|
|
movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK
|
|
#else
|
|
movdqa .Lgf128mul_x_ble_mask(%rip), GF128MUL_MASK
|
|
#endif
|
|
movups (IVP), IV
|
|
|
|
mov 480(KEYP), KLEN
|
|
add $240, KEYP
|
|
|
|
test $15, LEN
|
|
jz .Lxts_dec_loop4
|
|
sub $16, LEN
|
|
|
|
.Lxts_dec_loop4:
|
|
sub $64, LEN
|
|
jl .Lxts_dec_1x
|
|
|
|
movdqa IV, STATE1
|
|
movdqu 0x00(INP), IN
|
|
pxor IN, STATE1
|
|
movdqu IV, 0x00(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
movdqa IV, STATE2
|
|
movdqu 0x10(INP), IN
|
|
pxor IN, STATE2
|
|
movdqu IV, 0x10(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
movdqa IV, STATE3
|
|
movdqu 0x20(INP), IN
|
|
pxor IN, STATE3
|
|
movdqu IV, 0x20(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
movdqa IV, STATE4
|
|
movdqu 0x30(INP), IN
|
|
pxor IN, STATE4
|
|
movdqu IV, 0x30(OUTP)
|
|
|
|
call _aesni_dec4
|
|
|
|
movdqu 0x00(OUTP), IN
|
|
pxor IN, STATE1
|
|
movdqu STATE1, 0x00(OUTP)
|
|
|
|
movdqu 0x10(OUTP), IN
|
|
pxor IN, STATE2
|
|
movdqu STATE2, 0x10(OUTP)
|
|
|
|
movdqu 0x20(OUTP), IN
|
|
pxor IN, STATE3
|
|
movdqu STATE3, 0x20(OUTP)
|
|
|
|
movdqu 0x30(OUTP), IN
|
|
pxor IN, STATE4
|
|
movdqu STATE4, 0x30(OUTP)
|
|
|
|
_aesni_gf128mul_x_ble()
|
|
|
|
add $64, INP
|
|
add $64, OUTP
|
|
test LEN, LEN
|
|
jnz .Lxts_dec_loop4
|
|
|
|
.Lxts_dec_ret_iv:
|
|
movups IV, (IVP)
|
|
|
|
.Lxts_dec_ret:
|
|
#ifndef __x86_64__
|
|
popl KLEN
|
|
popl KEYP
|
|
popl LEN
|
|
popl IVP
|
|
#endif
|
|
FRAME_END
|
|
RET
|
|
|
|
.Lxts_dec_1x:
|
|
add $64, LEN
|
|
jz .Lxts_dec_ret_iv
|
|
|
|
.Lxts_dec_loop1:
|
|
movdqu (INP), STATE
|
|
|
|
add $16, INP
|
|
sub $16, LEN
|
|
jl .Lxts_dec_cts1
|
|
|
|
pxor IV, STATE
|
|
call _aesni_dec1
|
|
pxor IV, STATE
|
|
_aesni_gf128mul_x_ble()
|
|
|
|
test LEN, LEN
|
|
jz .Lxts_dec_out
|
|
|
|
movdqu STATE, (OUTP)
|
|
add $16, OUTP
|
|
jmp .Lxts_dec_loop1
|
|
|
|
.Lxts_dec_out:
|
|
movdqu STATE, (OUTP)
|
|
jmp .Lxts_dec_ret_iv
|
|
|
|
.Lxts_dec_cts1:
|
|
movdqa IV, STATE4
|
|
_aesni_gf128mul_x_ble()
|
|
|
|
pxor IV, STATE
|
|
call _aesni_dec1
|
|
pxor IV, STATE
|
|
|
|
#ifndef __x86_64__
|
|
lea .Lcts_permute_table, T1
|
|
#else
|
|
lea .Lcts_permute_table(%rip), T1
|
|
#endif
|
|
add LEN, INP /* rewind input pointer */
|
|
add $16, LEN /* # bytes in final block */
|
|
movups (INP), IN1
|
|
|
|
mov T1, IVP
|
|
add $32, IVP
|
|
add LEN, T1
|
|
sub LEN, IVP
|
|
add OUTP, LEN
|
|
|
|
movups (T1), %xmm4
|
|
movaps STATE, IN2
|
|
pshufb %xmm4, STATE
|
|
movups STATE, (LEN)
|
|
|
|
movups (IVP), %xmm0
|
|
pshufb %xmm0, IN1
|
|
pblendvb IN2, IN1
|
|
movaps IN1, STATE
|
|
|
|
pxor STATE4, STATE
|
|
call _aesni_dec1
|
|
pxor STATE4, STATE
|
|
|
|
movups STATE, (OUTP)
|
|
jmp .Lxts_dec_ret
|
|
SYM_FUNC_END(aesni_xts_decrypt)
|