/********************************************************************** Copyright(c) 2021 Arm Corporation All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Arm Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **********************************************************************/ #define KEY_LEN 256 #include "gcm_common.S" declare_var_vector_reg Key11,27 declare_var_vector_reg Key12,28 declare_var_vector_reg Key13,29 declare_var_vector_reg Key14,30 #define KEY_REGS 0,1,2,3,4,5,6,7,8,9,10,11,12 .macro aes_encrypt_block block:req aes_encrypt_round \block,Key0 aes_encrypt_round \block,Key1 aes_encrypt_round \block,Key2 aes_encrypt_round \block,Key3 aes_encrypt_round \block,Key4 aes_encrypt_round \block,Key5 aes_encrypt_round \block,Key6 aes_encrypt_round \block,Key7 aes_encrypt_round \block,Key8 aes_encrypt_round \block,Key9 aes_encrypt_round \block,Key10 aes_encrypt_round \block,Key11 aes_encrypt_round \block,Key12 aese v\block\().16b,vKey13.16b eor v\block\().16b,v\block\().16b,vKey14.16b .endm /* Load Aes Keys to [vKey0..vKey8,vKeyLast0,vKeyLast1] */ .macro load_aes_keys key_addr:req ld1 { vKey0.4s- vKey3.4s},[\key_addr],64 ld1 { vKey4.4s- vKey7.4s},[\key_addr],64 ld1 { vKey8.4s- vKey11.4s},[\key_addr],64 ld1 {vKey12.4s- vKey14.4s},[\key_addr],48 .endm /* [low,middle,tmp0,high] +=aadhash * [hashkey0,hashkey0_ext] dat=*dat_adr enc_dat=aes_encrypt(ctr)^dat aadhash=rbit(enc_dat) [hashkey0,hashkey0_ext] = *hashkey_adr dat_adr+=16 hashkey_adr+=32 */ .macro aes_gcm_middle is_enc:req,aadhash:req,dat_adr:req,hashkey_adr:req, \ hashkey0:req,hashkey0_ext:req,high:req,low:req, \ ctr:req,enc_ctr:req,one:req,out_adr:req, \ tmp0:req,tmp1:req,left_count:req pmull2 v\tmp0\().1q,v\aadhash\().2d,v\hashkey0\().2d pmull v\tmp1\().1q,v\aadhash\().1d,v\hashkey0\().1d .if \left_count > 1 ldr q\hashkey0,[\hashkey_adr],16 .endif add v\ctr\().4s,v\ctr\().4s,v\one\().4s //increase ctr rev32 v\enc_ctr\().16b,v\ctr\().16b aes_encrypt_round \enc_ctr,Key0 eor v\high\().16b,v\high\().16b,v\tmp0\().16b pmull v\tmp0\().1q,v\aadhash\().1d,v\hashkey0_ext\().1d eor v\low\().16b,v\low\().16b,v\tmp1\().16b pmull2 v\tmp1\().1q,v\aadhash\().2d,v\hashkey0_ext\().2d .if \left_count > 1 ldr q\hashkey0_ext,[\hashkey_adr],16 .endif eor v\aadhash\().16b,v\aadhash\().16b,v\aadhash\().16b aes_encrypt_round \enc_ctr,Key1 aes_encrypt_round \enc_ctr,Key2 eor v\tmp0\().16b,v\tmp1\().16b,v\tmp0\().16b aes_encrypt_round \enc_ctr,Key3 ext v\tmp1\().16b,v\aadhash\().16b,v\tmp0\().16b,8 ext v\tmp0\().16b,v\tmp0\().16b,v\aadhash\().16b,8 aes_encrypt_round \enc_ctr,Key4 eor v\low\().16b,v\low\().16b,v\tmp1\().16b eor v\high\().16b,v\high\().16b,v\tmp0\().16b aes_encrypt_round \enc_ctr,Key5 ldr q\aadhash,[\dat_adr],16 aes_encrypt_round \enc_ctr,Key6 aes_encrypt_round \enc_ctr,Key7 aes_encrypt_round \enc_ctr,Key8 aes_encrypt_round \enc_ctr,Key9 aes_encrypt_round \enc_ctr,Key10 aes_encrypt_round \enc_ctr,Key11 aes_encrypt_round \enc_ctr,Key12 aese v\enc_ctr\().16b,vKey13.16b eor v\enc_ctr\().16b,v\enc_ctr\().16b,vKey14.16b eor v\enc_ctr\().16b,v\enc_ctr\().16b,v\aadhash\().16b .ifc \is_enc , encrypt rbit v\aadhash\().16b,v\enc_ctr\().16b .endif .ifc \is_enc , decrypt rbit v\aadhash\().16b,v\aadhash\().16b .endif str q\enc_ctr,[\out_adr],16 .endm .macro aes_gcm_init is_enc:req,aadhash:req,dat_adr:req,hashkey_adr:req, \ hashkey0:req,hashkey0_ext:req, high:req,low:req, \ ctr:req,enc_ctr:req,one:req,out_adr:req, \ tmp0:req,tmp1:req,left_count:req ldr q\hashkey0,[\hashkey_adr],16 add v\ctr\().4s,v\ctr\().4s,v\one\().4s /*increase ctr */ rev32 v\enc_ctr\().16b,v\ctr\().16b aes_encrypt_round \enc_ctr,Key0 ldr q\hashkey0_ext,[\hashkey_adr],16 aes_encrypt_round \enc_ctr,Key1 pmull2 v\high\().1q,v\aadhash\().2d,v\hashkey0\().2d pmull v\low\().1q,v\aadhash\().1d,v\hashkey0\().1d .if \left_count > 1 ldr q\hashkey0,[\hashkey_adr],16 .endif aes_encrypt_round \enc_ctr,Key2 pmull v\tmp1\().1q,v\aadhash\().1d,v\hashkey0_ext\().1d pmull2 v\tmp0\().1q,v\aadhash\().2d,v\hashkey0_ext\().2d eor v\aadhash\().16b,v\aadhash\().16b,v\aadhash\().16b .if \left_count > 1 ldr q\hashkey0_ext,[\hashkey_adr],16 .endif aes_encrypt_round \enc_ctr,Key3 eor v\tmp0\().16b,v\tmp1\().16b,v\tmp0\().16b aes_encrypt_round \enc_ctr,Key4 ext v\tmp1\().16b,v\aadhash\().16b,v\tmp0\().16b,8 /*low */ ext v\tmp0\().16b,v\tmp0\().16b,v\aadhash\().16b,8 /* high */ aes_encrypt_round \enc_ctr,Key5 eor v\low\().16b,v\low\().16b,v\tmp1\().16b eor v\high\().16b,v\high\().16b,v\tmp0\().16b aes_encrypt_round \enc_ctr,Key6 ldr q\aadhash,[\dat_adr],16 aes_encrypt_round \enc_ctr,Key7 aes_encrypt_round \enc_ctr,Key8 aes_encrypt_round \enc_ctr,Key9 aes_encrypt_round \enc_ctr,Key10 aes_encrypt_round \enc_ctr,Key11 aes_encrypt_round \enc_ctr,Key12 aese v\enc_ctr\().16b,vKey13.16b eor v\enc_ctr\().16b,v\enc_ctr\().16b,vKey14.16b eor v\enc_ctr\().16b,v\enc_ctr\().16b,v\aadhash\().16b .ifc \is_enc , encrypt rbit v\aadhash\().16b,v\enc_ctr\().16b .endif .ifc \is_enc , decrypt rbit v\aadhash\().16b,v\aadhash\().16b .endif str q\enc_ctr,[\out_adr],16 .endm