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| /*
| * AES-NI + SSE2 implementation of AEGIS-128L
| *
| * Copyright (c) 2017-2018 Ondrej Mosnacek <omosnacek@gmail.com>
| * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.
| *
| * This program is free software; you can redistribute it and/or modify it
| * under the terms of the GNU General Public License version 2 as published
| * by the Free Software Foundation.
| */
|
| #include <linux/linkage.h>
| #include <asm/frame.h>
|
| #define STATE0 %xmm0
| #define STATE1 %xmm1
| #define STATE2 %xmm2
| #define STATE3 %xmm3
| #define STATE4 %xmm4
| #define STATE5 %xmm5
| #define STATE6 %xmm6
| #define STATE7 %xmm7
| #define MSG0 %xmm8
| #define MSG1 %xmm9
| #define T0 %xmm10
| #define T1 %xmm11
| #define T2 %xmm12
| #define T3 %xmm13
|
| #define STATEP %rdi
| #define LEN %rsi
| #define SRC %rdx
| #define DST %rcx
|
| .section .rodata.cst16.aegis128l_const, "aM", @progbits, 32
| .align 16
| .Laegis128l_const_0:
| .byte 0x00, 0x01, 0x01, 0x02, 0x03, 0x05, 0x08, 0x0d
| .byte 0x15, 0x22, 0x37, 0x59, 0x90, 0xe9, 0x79, 0x62
| .Laegis128l_const_1:
| .byte 0xdb, 0x3d, 0x18, 0x55, 0x6d, 0xc2, 0x2f, 0xf1
| .byte 0x20, 0x11, 0x31, 0x42, 0x73, 0xb5, 0x28, 0xdd
|
| .section .rodata.cst16.aegis128l_counter, "aM", @progbits, 16
| .align 16
| .Laegis128l_counter0:
| .byte 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
| .byte 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
| .Laegis128l_counter1:
| .byte 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17
| .byte 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
|
| .text
|
| /*
| * __load_partial: internal ABI
| * input:
| * LEN - bytes
| * SRC - src
| * output:
| * MSG0 - first message block
| * MSG1 - second message block
| * changed:
| * T0
| * %r8
| * %r9
| */
| __load_partial:
| xor %r9d, %r9d
| pxor MSG0, MSG0
| pxor MSG1, MSG1
|
| mov LEN, %r8
| and $0x1, %r8
| jz .Lld_partial_1
|
| mov LEN, %r8
| and $0x1E, %r8
| add SRC, %r8
| mov (%r8), %r9b
|
| .Lld_partial_1:
| mov LEN, %r8
| and $0x2, %r8
| jz .Lld_partial_2
|
| mov LEN, %r8
| and $0x1C, %r8
| add SRC, %r8
| shl $0x10, %r9
| mov (%r8), %r9w
|
| .Lld_partial_2:
| mov LEN, %r8
| and $0x4, %r8
| jz .Lld_partial_4
|
| mov LEN, %r8
| and $0x18, %r8
| add SRC, %r8
| shl $32, %r9
| mov (%r8), %r8d
| xor %r8, %r9
|
| .Lld_partial_4:
| movq %r9, MSG0
|
| mov LEN, %r8
| and $0x8, %r8
| jz .Lld_partial_8
|
| mov LEN, %r8
| and $0x10, %r8
| add SRC, %r8
| pslldq $8, MSG0
| movq (%r8), T0
| pxor T0, MSG0
|
| .Lld_partial_8:
| mov LEN, %r8
| and $0x10, %r8
| jz .Lld_partial_16
|
| movdqa MSG0, MSG1
| movdqu (SRC), MSG0
|
| .Lld_partial_16:
| ret
| ENDPROC(__load_partial)
|
| /*
| * __store_partial: internal ABI
| * input:
| * LEN - bytes
| * DST - dst
| * output:
| * T0 - first message block
| * T1 - second message block
| * changed:
| * %r8
| * %r9
| * %r10
| */
| __store_partial:
| mov LEN, %r8
| mov DST, %r9
|
| cmp $16, %r8
| jl .Lst_partial_16
|
| movdqu T0, (%r9)
| movdqa T1, T0
|
| sub $16, %r8
| add $16, %r9
|
| .Lst_partial_16:
| movq T0, %r10
|
| cmp $8, %r8
| jl .Lst_partial_8
|
| mov %r10, (%r9)
| psrldq $8, T0
| movq T0, %r10
|
| sub $8, %r8
| add $8, %r9
|
| .Lst_partial_8:
| cmp $4, %r8
| jl .Lst_partial_4
|
| mov %r10d, (%r9)
| shr $32, %r10
|
| sub $4, %r8
| add $4, %r9
|
| .Lst_partial_4:
| cmp $2, %r8
| jl .Lst_partial_2
|
| mov %r10w, (%r9)
| shr $0x10, %r10
|
| sub $2, %r8
| add $2, %r9
|
| .Lst_partial_2:
| cmp $1, %r8
| jl .Lst_partial_1
|
| mov %r10b, (%r9)
|
| .Lst_partial_1:
| ret
| ENDPROC(__store_partial)
|
| .macro update
| movdqa STATE7, T0
| aesenc STATE0, STATE7
| aesenc STATE1, STATE0
| aesenc STATE2, STATE1
| aesenc STATE3, STATE2
| aesenc STATE4, STATE3
| aesenc STATE5, STATE4
| aesenc STATE6, STATE5
| aesenc T0, STATE6
| .endm
|
| .macro update0
| update
| pxor MSG0, STATE7
| pxor MSG1, STATE3
| .endm
|
| .macro update1
| update
| pxor MSG0, STATE6
| pxor MSG1, STATE2
| .endm
|
| .macro update2
| update
| pxor MSG0, STATE5
| pxor MSG1, STATE1
| .endm
|
| .macro update3
| update
| pxor MSG0, STATE4
| pxor MSG1, STATE0
| .endm
|
| .macro update4
| update
| pxor MSG0, STATE3
| pxor MSG1, STATE7
| .endm
|
| .macro update5
| update
| pxor MSG0, STATE2
| pxor MSG1, STATE6
| .endm
|
| .macro update6
| update
| pxor MSG0, STATE1
| pxor MSG1, STATE5
| .endm
|
| .macro update7
| update
| pxor MSG0, STATE0
| pxor MSG1, STATE4
| .endm
|
| .macro state_load
| movdqu 0x00(STATEP), STATE0
| movdqu 0x10(STATEP), STATE1
| movdqu 0x20(STATEP), STATE2
| movdqu 0x30(STATEP), STATE3
| movdqu 0x40(STATEP), STATE4
| movdqu 0x50(STATEP), STATE5
| movdqu 0x60(STATEP), STATE6
| movdqu 0x70(STATEP), STATE7
| .endm
|
| .macro state_store s0 s1 s2 s3 s4 s5 s6 s7
| movdqu \s7, 0x00(STATEP)
| movdqu \s0, 0x10(STATEP)
| movdqu \s1, 0x20(STATEP)
| movdqu \s2, 0x30(STATEP)
| movdqu \s3, 0x40(STATEP)
| movdqu \s4, 0x50(STATEP)
| movdqu \s5, 0x60(STATEP)
| movdqu \s6, 0x70(STATEP)
| .endm
|
| .macro state_store0
| state_store STATE0 STATE1 STATE2 STATE3 STATE4 STATE5 STATE6 STATE7
| .endm
|
| .macro state_store1
| state_store STATE7 STATE0 STATE1 STATE2 STATE3 STATE4 STATE5 STATE6
| .endm
|
| .macro state_store2
| state_store STATE6 STATE7 STATE0 STATE1 STATE2 STATE3 STATE4 STATE5
| .endm
|
| .macro state_store3
| state_store STATE5 STATE6 STATE7 STATE0 STATE1 STATE2 STATE3 STATE4
| .endm
|
| .macro state_store4
| state_store STATE4 STATE5 STATE6 STATE7 STATE0 STATE1 STATE2 STATE3
| .endm
|
| .macro state_store5
| state_store STATE3 STATE4 STATE5 STATE6 STATE7 STATE0 STATE1 STATE2
| .endm
|
| .macro state_store6
| state_store STATE2 STATE3 STATE4 STATE5 STATE6 STATE7 STATE0 STATE1
| .endm
|
| .macro state_store7
| state_store STATE1 STATE2 STATE3 STATE4 STATE5 STATE6 STATE7 STATE0
| .endm
|
| /*
| * void crypto_aegis128l_aesni_init(void *state, const void *key, const void *iv);
| */
| ENTRY(crypto_aegis128l_aesni_init)
| FRAME_BEGIN
|
| /* load key: */
| movdqa (%rsi), MSG1
| movdqa MSG1, STATE0
| movdqa MSG1, STATE4
| movdqa MSG1, STATE5
| movdqa MSG1, STATE6
| movdqa MSG1, STATE7
|
| /* load IV: */
| movdqu (%rdx), MSG0
| pxor MSG0, STATE0
| pxor MSG0, STATE4
|
| /* load the constants: */
| movdqa .Laegis128l_const_0, STATE2
| movdqa .Laegis128l_const_1, STATE1
| movdqa STATE1, STATE3
| pxor STATE2, STATE5
| pxor STATE1, STATE6
| pxor STATE2, STATE7
|
| /* update 10 times with IV and KEY: */
| update0
| update1
| update2
| update3
| update4
| update5
| update6
| update7
| update0
| update1
|
| state_store1
|
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_init)
|
| .macro ad_block a i
| movdq\a (\i * 0x20 + 0x00)(SRC), MSG0
| movdq\a (\i * 0x20 + 0x10)(SRC), MSG1
| update\i
| sub $0x20, LEN
| cmp $0x20, LEN
| jl .Lad_out_\i
| .endm
|
| /*
| * void crypto_aegis128l_aesni_ad(void *state, unsigned int length,
| * const void *data);
| */
| ENTRY(crypto_aegis128l_aesni_ad)
| FRAME_BEGIN
|
| cmp $0x20, LEN
| jb .Lad_out
|
| state_load
|
| mov SRC, %r8
| and $0xf, %r8
| jnz .Lad_u_loop
|
| .align 8
| .Lad_a_loop:
| ad_block a 0
| ad_block a 1
| ad_block a 2
| ad_block a 3
| ad_block a 4
| ad_block a 5
| ad_block a 6
| ad_block a 7
|
| add $0x100, SRC
| jmp .Lad_a_loop
|
| .align 8
| .Lad_u_loop:
| ad_block u 0
| ad_block u 1
| ad_block u 2
| ad_block u 3
| ad_block u 4
| ad_block u 5
| ad_block u 6
| ad_block u 7
|
| add $0x100, SRC
| jmp .Lad_u_loop
|
| .Lad_out_0:
| state_store0
| FRAME_END
| ret
|
| .Lad_out_1:
| state_store1
| FRAME_END
| ret
|
| .Lad_out_2:
| state_store2
| FRAME_END
| ret
|
| .Lad_out_3:
| state_store3
| FRAME_END
| ret
|
| .Lad_out_4:
| state_store4
| FRAME_END
| ret
|
| .Lad_out_5:
| state_store5
| FRAME_END
| ret
|
| .Lad_out_6:
| state_store6
| FRAME_END
| ret
|
| .Lad_out_7:
| state_store7
| FRAME_END
| ret
|
| .Lad_out:
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_ad)
|
| .macro crypt m0 m1 s0 s1 s2 s3 s4 s5 s6 s7
| pxor \s1, \m0
| pxor \s6, \m0
| movdqa \s2, T3
| pand \s3, T3
| pxor T3, \m0
|
| pxor \s2, \m1
| pxor \s5, \m1
| movdqa \s6, T3
| pand \s7, T3
| pxor T3, \m1
| .endm
|
| .macro crypt0 m0 m1
| crypt \m0 \m1 STATE0 STATE1 STATE2 STATE3 STATE4 STATE5 STATE6 STATE7
| .endm
|
| .macro crypt1 m0 m1
| crypt \m0 \m1 STATE7 STATE0 STATE1 STATE2 STATE3 STATE4 STATE5 STATE6
| .endm
|
| .macro crypt2 m0 m1
| crypt \m0 \m1 STATE6 STATE7 STATE0 STATE1 STATE2 STATE3 STATE4 STATE5
| .endm
|
| .macro crypt3 m0 m1
| crypt \m0 \m1 STATE5 STATE6 STATE7 STATE0 STATE1 STATE2 STATE3 STATE4
| .endm
|
| .macro crypt4 m0 m1
| crypt \m0 \m1 STATE4 STATE5 STATE6 STATE7 STATE0 STATE1 STATE2 STATE3
| .endm
|
| .macro crypt5 m0 m1
| crypt \m0 \m1 STATE3 STATE4 STATE5 STATE6 STATE7 STATE0 STATE1 STATE2
| .endm
|
| .macro crypt6 m0 m1
| crypt \m0 \m1 STATE2 STATE3 STATE4 STATE5 STATE6 STATE7 STATE0 STATE1
| .endm
|
| .macro crypt7 m0 m1
| crypt \m0 \m1 STATE1 STATE2 STATE3 STATE4 STATE5 STATE6 STATE7 STATE0
| .endm
|
| .macro encrypt_block a i
| movdq\a (\i * 0x20 + 0x00)(SRC), MSG0
| movdq\a (\i * 0x20 + 0x10)(SRC), MSG1
| movdqa MSG0, T0
| movdqa MSG1, T1
| crypt\i T0, T1
| movdq\a T0, (\i * 0x20 + 0x00)(DST)
| movdq\a T1, (\i * 0x20 + 0x10)(DST)
|
| update\i
|
| sub $0x20, LEN
| cmp $0x20, LEN
| jl .Lenc_out_\i
| .endm
|
| .macro decrypt_block a i
| movdq\a (\i * 0x20 + 0x00)(SRC), MSG0
| movdq\a (\i * 0x20 + 0x10)(SRC), MSG1
| crypt\i MSG0, MSG1
| movdq\a MSG0, (\i * 0x20 + 0x00)(DST)
| movdq\a MSG1, (\i * 0x20 + 0x10)(DST)
|
| update\i
|
| sub $0x20, LEN
| cmp $0x20, LEN
| jl .Ldec_out_\i
| .endm
|
| /*
| * void crypto_aegis128l_aesni_enc(void *state, unsigned int length,
| * const void *src, void *dst);
| */
| ENTRY(crypto_aegis128l_aesni_enc)
| FRAME_BEGIN
|
| cmp $0x20, LEN
| jb .Lenc_out
|
| state_load
|
| mov SRC, %r8
| or DST, %r8
| and $0xf, %r8
| jnz .Lenc_u_loop
|
| .align 8
| .Lenc_a_loop:
| encrypt_block a 0
| encrypt_block a 1
| encrypt_block a 2
| encrypt_block a 3
| encrypt_block a 4
| encrypt_block a 5
| encrypt_block a 6
| encrypt_block a 7
|
| add $0x100, SRC
| add $0x100, DST
| jmp .Lenc_a_loop
|
| .align 8
| .Lenc_u_loop:
| encrypt_block u 0
| encrypt_block u 1
| encrypt_block u 2
| encrypt_block u 3
| encrypt_block u 4
| encrypt_block u 5
| encrypt_block u 6
| encrypt_block u 7
|
| add $0x100, SRC
| add $0x100, DST
| jmp .Lenc_u_loop
|
| .Lenc_out_0:
| state_store0
| FRAME_END
| ret
|
| .Lenc_out_1:
| state_store1
| FRAME_END
| ret
|
| .Lenc_out_2:
| state_store2
| FRAME_END
| ret
|
| .Lenc_out_3:
| state_store3
| FRAME_END
| ret
|
| .Lenc_out_4:
| state_store4
| FRAME_END
| ret
|
| .Lenc_out_5:
| state_store5
| FRAME_END
| ret
|
| .Lenc_out_6:
| state_store6
| FRAME_END
| ret
|
| .Lenc_out_7:
| state_store7
| FRAME_END
| ret
|
| .Lenc_out:
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_enc)
|
| /*
| * void crypto_aegis128l_aesni_enc_tail(void *state, unsigned int length,
| * const void *src, void *dst);
| */
| ENTRY(crypto_aegis128l_aesni_enc_tail)
| FRAME_BEGIN
|
| state_load
|
| /* encrypt message: */
| call __load_partial
|
| movdqa MSG0, T0
| movdqa MSG1, T1
| crypt0 T0, T1
|
| call __store_partial
|
| update0
|
| state_store0
|
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_enc_tail)
|
| /*
| * void crypto_aegis128l_aesni_dec(void *state, unsigned int length,
| * const void *src, void *dst);
| */
| ENTRY(crypto_aegis128l_aesni_dec)
| FRAME_BEGIN
|
| cmp $0x20, LEN
| jb .Ldec_out
|
| state_load
|
| mov SRC, %r8
| or DST, %r8
| and $0xF, %r8
| jnz .Ldec_u_loop
|
| .align 8
| .Ldec_a_loop:
| decrypt_block a 0
| decrypt_block a 1
| decrypt_block a 2
| decrypt_block a 3
| decrypt_block a 4
| decrypt_block a 5
| decrypt_block a 6
| decrypt_block a 7
|
| add $0x100, SRC
| add $0x100, DST
| jmp .Ldec_a_loop
|
| .align 8
| .Ldec_u_loop:
| decrypt_block u 0
| decrypt_block u 1
| decrypt_block u 2
| decrypt_block u 3
| decrypt_block u 4
| decrypt_block u 5
| decrypt_block u 6
| decrypt_block u 7
|
| add $0x100, SRC
| add $0x100, DST
| jmp .Ldec_u_loop
|
| .Ldec_out_0:
| state_store0
| FRAME_END
| ret
|
| .Ldec_out_1:
| state_store1
| FRAME_END
| ret
|
| .Ldec_out_2:
| state_store2
| FRAME_END
| ret
|
| .Ldec_out_3:
| state_store3
| FRAME_END
| ret
|
| .Ldec_out_4:
| state_store4
| FRAME_END
| ret
|
| .Ldec_out_5:
| state_store5
| FRAME_END
| ret
|
| .Ldec_out_6:
| state_store6
| FRAME_END
| ret
|
| .Ldec_out_7:
| state_store7
| FRAME_END
| ret
|
| .Ldec_out:
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_dec)
|
| /*
| * void crypto_aegis128l_aesni_dec_tail(void *state, unsigned int length,
| * const void *src, void *dst);
| */
| ENTRY(crypto_aegis128l_aesni_dec_tail)
| FRAME_BEGIN
|
| state_load
|
| /* decrypt message: */
| call __load_partial
|
| crypt0 MSG0, MSG1
|
| movdqa MSG0, T0
| movdqa MSG1, T1
| call __store_partial
|
| /* mask with byte count: */
| movq LEN, T0
| punpcklbw T0, T0
| punpcklbw T0, T0
| punpcklbw T0, T0
| punpcklbw T0, T0
| movdqa T0, T1
| movdqa .Laegis128l_counter0, T2
| movdqa .Laegis128l_counter1, T3
| pcmpgtb T2, T0
| pcmpgtb T3, T1
| pand T0, MSG0
| pand T1, MSG1
|
| update0
|
| state_store0
|
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_dec_tail)
|
| /*
| * void crypto_aegis128l_aesni_final(void *state, void *tag_xor,
| * u64 assoclen, u64 cryptlen);
| */
| ENTRY(crypto_aegis128l_aesni_final)
| FRAME_BEGIN
|
| state_load
|
| /* prepare length block: */
| movq %rdx, MSG0
| movq %rcx, T0
| pslldq $8, T0
| pxor T0, MSG0
| psllq $3, MSG0 /* multiply by 8 (to get bit count) */
|
| pxor STATE2, MSG0
| movdqa MSG0, MSG1
|
| /* update state: */
| update0
| update1
| update2
| update3
| update4
| update5
| update6
|
| /* xor tag: */
| movdqu (%rsi), T0
|
| pxor STATE1, T0
| pxor STATE2, T0
| pxor STATE3, T0
| pxor STATE4, T0
| pxor STATE5, T0
| pxor STATE6, T0
| pxor STATE7, T0
|
| movdqu T0, (%rsi)
|
| FRAME_END
| ret
| ENDPROC(crypto_aegis128l_aesni_final)
|
|
