| /* 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 _initial_num_blocks_is_0_\@ |
| cmp $(2<<4), %r12 |
| jb _initial_num_blocks_is_1_\@ |
| je _initial_num_blocks_is_2_\@ |
| _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 _initial_blocks_\@ |
| _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 _initial_blocks_\@ |
| _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 _initial_blocks_\@ |
| _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 |
| _initial_blocks_\@: |
| |
| # Main loop - Encrypt/Decrypt remaining blocks |
| |
| test %r13, %r13 |
| je _zero_cipher_left_\@ |
| sub $64, %r13 |
| je _four_cipher_left_\@ |
| _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 _crypt_by_4_\@ |
| _four_cipher_left_\@: |
| GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ |
| %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 |
| _zero_cipher_left_\@: |
| movdqu %xmm8, AadHash(%arg2) |
| movdqu %xmm0, CurCount(%arg2) |
| |
| mov %arg5, %r13 |
| and $15, %r13 # %r13 = arg5 (mod 16) |
| je _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 _large_enough_update_\@ |
| |
| lea (%arg4,%r11,1), %r10 |
| mov %r13, %r12 |
| READ_PARTIAL_BLOCK %r10 %r12 %xmm2 %xmm1 |
| jmp _data_read_\@ |
| |
| _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 |
| |
| _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 _less_than_8_bytes_left_\@ |
| mov %rax, (%arg3 , %r11, 1) |
| add $8, %r11 |
| psrldq $8, %xmm0 |
| movq %xmm0, %rax |
| sub $8, %r13 |
| _less_than_8_bytes_left_\@: |
| mov %al, (%arg3, %r11, 1) |
| add $1, %r11 |
| shr $8, %rax |
| sub $1, %r13 |
| jne _less_than_8_bytes_left_\@ |
| _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 _partial_done\@ |
| |
| GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 |
| |
| _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 |
| _return_T_\@: |
| mov \AUTHTAG, %r10 # %r10 = authTag |
| mov \AUTHTAGLEN, %r11 # %r11 = auth_tag_len |
| cmp $16, %r11 |
| je _T_16_\@ |
| cmp $8, %r11 |
| jl _T_4_\@ |
| _T_8_\@: |
| movq %xmm0, %rax |
| mov %rax, (%r10) |
| add $8, %r10 |
| sub $8, %r11 |
| psrldq $8, %xmm0 |
| test %r11, %r11 |
| je _return_T_done_\@ |
| _T_4_\@: |
| movd %xmm0, %eax |
| mov %eax, (%r10) |
| add $4, %r10 |
| sub $4, %r11 |
| psrldq $4, %xmm0 |
| test %r11, %r11 |
| je _return_T_done_\@ |
| _T_123_\@: |
| movd %xmm0, %eax |
| cmp $2, %r11 |
| jl _T_1_\@ |
| mov %ax, (%r10) |
| cmp $2, %r11 |
| je _return_T_done_\@ |
| add $2, %r10 |
| sar $16, %eax |
| _T_1_\@: |
| mov %al, (%r10) |
| jmp _return_T_done_\@ |
| _T_16_\@: |
| movdqu %xmm0, (%r10) |
| _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 _read_lt8_\@ |
| mov (\DPTR), %rax |
| movq %rax, \XMMDst |
| sub $8, \DLEN |
| jz _done_read_partial_block_\@ |
| xor %eax, %eax |
| _read_next_byte_\@: |
| shl $8, %rax |
| mov 7(\DPTR, \DLEN, 1), %al |
| dec \DLEN |
| jnz _read_next_byte_\@ |
| movq %rax, \XMM1 |
| pslldq $8, \XMM1 |
| por \XMM1, \XMMDst |
| jmp _done_read_partial_block_\@ |
| _read_lt8_\@: |
| xor %eax, %eax |
| _read_next_byte_lt8_\@: |
| shl $8, %rax |
| mov -1(\DPTR, \DLEN, 1), %al |
| dec \DLEN |
| jnz _read_next_byte_lt8_\@ |
| movq %rax, \XMMDst |
| _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 _get_AAD_rest\@ |
| _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 _get_AAD_blocks\@ |
| |
| movdqu \TMP6, \TMP7 |
| |
| /* read the last <16B of AAD */ |
| _get_AAD_rest\@: |
| test %r11, %r11 |
| je _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 |
| |
| _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 _partial_block_done_\@ # Leave Macro if no partial blocks |
| # Read in input data without over reading |
| cmp $16, \PLAIN_CYPH_LEN |
| jl _fewer_than_16_bytes_\@ |
| movups (\PLAIN_CYPH_IN), %xmm1 # If more than 16 bytes, just fill xmm |
| jmp _data_read_\@ |
| |
| _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 |
| |
| _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 if partial block is not being filled and |
| # shift mask accordingly |
| jge _no_extra_mask_1_\@ |
| sub %r10, %r12 |
| _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 _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 _dec_done_\@ |
| _partial_incomplete_1_\@: |
| add \PLAIN_CYPH_LEN, PBlockLen(%arg2) |
| _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 if partial block is not being filled and |
| # shift mask accordingly |
| jge _no_extra_mask_2_\@ |
| sub %r10, %r12 |
| _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 _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 _encode_done_\@ |
| _partial_incomplete_2_\@: |
| add \PLAIN_CYPH_LEN, PBlockLen(%arg2) |
| _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 _partial_fill_\@ |
| mov %r13, %r12 |
| mov $16, %r13 |
| # Set r13 to be the number of bytes to write out |
| sub %r12, %r13 |
| jmp _count_set_\@ |
| _partial_fill_\@: |
| mov \PLAIN_CYPH_LEN, %r13 |
| _count_set_\@: |
| movdqa %xmm9, %xmm0 |
| movq %xmm0, %rax |
| cmp $8, %r13 |
| jle _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 |
| _less_than_8_bytes_left_\@: |
| movb %al, (\CYPH_PLAIN_OUT, \DATA_OFFSET, 1) |
| add $1, \DATA_OFFSET |
| shr $8, %rax |
| sub $1, %r13 |
| jne _less_than_8_bytes_left_\@ |
| _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 |
| |
| aes_loop_initial_\@: |
| MOVADQ (%r10),\TMP1 |
| .irpc index, \i_seq |
| aesenc \TMP1, %xmm\index |
| .endr |
| add $16,%r10 |
| sub $1,%eax |
| jnz aes_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 _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 aes_loop_pre_done\@ |
| |
| aes_loop_pre_\@: |
| MOVADQ (%r10),\TMP2 |
| .irpc index, 1234 |
| aesenc \TMP2, %xmm\index |
| .endr |
| add $16,%r10 |
| sub $1,%eax |
| jnz aes_loop_pre_\@ |
| |
| aes_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 |
| |
| _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 aes_loop_par_enc_done\@ |
| |
| aes_loop_par_enc\@: |
| MOVADQ (%r10),\TMP3 |
| .irpc index, 1234 |
| aesenc \TMP3, %xmm\index |
| .endr |
| add $16,%r10 |
| sub $1,%eax |
| jnz aes_loop_par_enc\@ |
| |
| aes_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 aes_loop_par_dec_done\@ |
| |
| aes_loop_par_dec\@: |
| MOVADQ (%r10),\TMP3 |
| .irpc index, 1234 |
| aesenc \TMP3, %xmm\index |
| .endr |
| add $16,%r10 |
| sub $1,%eax |
| jnz aes_loop_par_dec\@ |
| |
| aes_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, 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) |
