| /* |
| * linux/arch/arm64/crypto/aes-neon.S - AES cipher for ARMv8 NEON |
| * |
| * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org> |
| * |
| * 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/assembler.h> |
| |
| #define AES_ENTRY(func) ENTRY(neon_ ## func) |
| #define AES_ENDPROC(func) ENDPROC(neon_ ## func) |
| |
| /* multiply by polynomial 'x' in GF(2^8) */ |
| .macro mul_by_x, out, in, temp, const |
| sshr \temp, \in, #7 |
| add \out, \in, \in |
| and \temp, \temp, \const |
| eor \out, \out, \temp |
| .endm |
| |
| /* preload the entire Sbox */ |
| .macro prepare, sbox, shiftrows, temp |
| adr \temp, \sbox |
| movi v12.16b, #0x40 |
| ldr q13, \shiftrows |
| movi v14.16b, #0x1b |
| ld1 {v16.16b-v19.16b}, [\temp], #64 |
| ld1 {v20.16b-v23.16b}, [\temp], #64 |
| ld1 {v24.16b-v27.16b}, [\temp], #64 |
| ld1 {v28.16b-v31.16b}, [\temp] |
| .endm |
| |
| /* do preload for encryption */ |
| .macro enc_prepare, ignore0, ignore1, temp |
| prepare .LForward_Sbox, .LForward_ShiftRows, \temp |
| .endm |
| |
| .macro enc_switch_key, ignore0, ignore1, temp |
| /* do nothing */ |
| .endm |
| |
| /* do preload for decryption */ |
| .macro dec_prepare, ignore0, ignore1, temp |
| prepare .LReverse_Sbox, .LReverse_ShiftRows, \temp |
| .endm |
| |
| /* apply SubBytes transformation using the the preloaded Sbox */ |
| .macro sub_bytes, in |
| sub v9.16b, \in\().16b, v12.16b |
| tbl \in\().16b, {v16.16b-v19.16b}, \in\().16b |
| sub v10.16b, v9.16b, v12.16b |
| tbx \in\().16b, {v20.16b-v23.16b}, v9.16b |
| sub v11.16b, v10.16b, v12.16b |
| tbx \in\().16b, {v24.16b-v27.16b}, v10.16b |
| tbx \in\().16b, {v28.16b-v31.16b}, v11.16b |
| .endm |
| |
| /* apply MixColumns transformation */ |
| .macro mix_columns, in |
| mul_by_x v10.16b, \in\().16b, v9.16b, v14.16b |
| rev32 v8.8h, \in\().8h |
| eor \in\().16b, v10.16b, \in\().16b |
| shl v9.4s, v8.4s, #24 |
| shl v11.4s, \in\().4s, #24 |
| sri v9.4s, v8.4s, #8 |
| sri v11.4s, \in\().4s, #8 |
| eor v9.16b, v9.16b, v8.16b |
| eor v10.16b, v10.16b, v9.16b |
| eor \in\().16b, v10.16b, v11.16b |
| .endm |
| |
| /* Inverse MixColumns: pre-multiply by { 5, 0, 4, 0 } */ |
| .macro inv_mix_columns, in |
| mul_by_x v11.16b, \in\().16b, v10.16b, v14.16b |
| mul_by_x v11.16b, v11.16b, v10.16b, v14.16b |
| eor \in\().16b, \in\().16b, v11.16b |
| rev32 v11.8h, v11.8h |
| eor \in\().16b, \in\().16b, v11.16b |
| mix_columns \in |
| .endm |
| |
| .macro do_block, enc, in, rounds, rk, rkp, i |
| ld1 {v15.4s}, [\rk] |
| add \rkp, \rk, #16 |
| mov \i, \rounds |
| 1111: eor \in\().16b, \in\().16b, v15.16b /* ^round key */ |
| tbl \in\().16b, {\in\().16b}, v13.16b /* ShiftRows */ |
| sub_bytes \in |
| ld1 {v15.4s}, [\rkp], #16 |
| subs \i, \i, #1 |
| beq 2222f |
| .if \enc == 1 |
| mix_columns \in |
| .else |
| inv_mix_columns \in |
| .endif |
| b 1111b |
| 2222: eor \in\().16b, \in\().16b, v15.16b /* ^round key */ |
| .endm |
| |
| .macro encrypt_block, in, rounds, rk, rkp, i |
| do_block 1, \in, \rounds, \rk, \rkp, \i |
| .endm |
| |
| .macro decrypt_block, in, rounds, rk, rkp, i |
| do_block 0, \in, \rounds, \rk, \rkp, \i |
| .endm |
| |
| /* |
| * Interleaved versions: functionally equivalent to the |
| * ones above, but applied to 2 or 4 AES states in parallel. |
| */ |
| |
| .macro sub_bytes_2x, in0, in1 |
| sub v8.16b, \in0\().16b, v12.16b |
| sub v9.16b, \in1\().16b, v12.16b |
| tbl \in0\().16b, {v16.16b-v19.16b}, \in0\().16b |
| tbl \in1\().16b, {v16.16b-v19.16b}, \in1\().16b |
| sub v10.16b, v8.16b, v12.16b |
| sub v11.16b, v9.16b, v12.16b |
| tbx \in0\().16b, {v20.16b-v23.16b}, v8.16b |
| tbx \in1\().16b, {v20.16b-v23.16b}, v9.16b |
| sub v8.16b, v10.16b, v12.16b |
| sub v9.16b, v11.16b, v12.16b |
| tbx \in0\().16b, {v24.16b-v27.16b}, v10.16b |
| tbx \in1\().16b, {v24.16b-v27.16b}, v11.16b |
| tbx \in0\().16b, {v28.16b-v31.16b}, v8.16b |
| tbx \in1\().16b, {v28.16b-v31.16b}, v9.16b |
| .endm |
| |
| .macro sub_bytes_4x, in0, in1, in2, in3 |
| sub v8.16b, \in0\().16b, v12.16b |
| tbl \in0\().16b, {v16.16b-v19.16b}, \in0\().16b |
| sub v9.16b, \in1\().16b, v12.16b |
| tbl \in1\().16b, {v16.16b-v19.16b}, \in1\().16b |
| sub v10.16b, \in2\().16b, v12.16b |
| tbl \in2\().16b, {v16.16b-v19.16b}, \in2\().16b |
| sub v11.16b, \in3\().16b, v12.16b |
| tbl \in3\().16b, {v16.16b-v19.16b}, \in3\().16b |
| tbx \in0\().16b, {v20.16b-v23.16b}, v8.16b |
| tbx \in1\().16b, {v20.16b-v23.16b}, v9.16b |
| sub v8.16b, v8.16b, v12.16b |
| tbx \in2\().16b, {v20.16b-v23.16b}, v10.16b |
| sub v9.16b, v9.16b, v12.16b |
| tbx \in3\().16b, {v20.16b-v23.16b}, v11.16b |
| sub v10.16b, v10.16b, v12.16b |
| tbx \in0\().16b, {v24.16b-v27.16b}, v8.16b |
| sub v11.16b, v11.16b, v12.16b |
| tbx \in1\().16b, {v24.16b-v27.16b}, v9.16b |
| sub v8.16b, v8.16b, v12.16b |
| tbx \in2\().16b, {v24.16b-v27.16b}, v10.16b |
| sub v9.16b, v9.16b, v12.16b |
| tbx \in3\().16b, {v24.16b-v27.16b}, v11.16b |
| sub v10.16b, v10.16b, v12.16b |
| tbx \in0\().16b, {v28.16b-v31.16b}, v8.16b |
| sub v11.16b, v11.16b, v12.16b |
| tbx \in1\().16b, {v28.16b-v31.16b}, v9.16b |
| tbx \in2\().16b, {v28.16b-v31.16b}, v10.16b |
| tbx \in3\().16b, {v28.16b-v31.16b}, v11.16b |
| .endm |
| |
| .macro mul_by_x_2x, out0, out1, in0, in1, tmp0, tmp1, const |
| sshr \tmp0\().16b, \in0\().16b, #7 |
| add \out0\().16b, \in0\().16b, \in0\().16b |
| sshr \tmp1\().16b, \in1\().16b, #7 |
| and \tmp0\().16b, \tmp0\().16b, \const\().16b |
| add \out1\().16b, \in1\().16b, \in1\().16b |
| and \tmp1\().16b, \tmp1\().16b, \const\().16b |
| eor \out0\().16b, \out0\().16b, \tmp0\().16b |
| eor \out1\().16b, \out1\().16b, \tmp1\().16b |
| .endm |
| |
| .macro mix_columns_2x, in0, in1 |
| mul_by_x_2x v8, v9, \in0, \in1, v10, v11, v14 |
| rev32 v10.8h, \in0\().8h |
| rev32 v11.8h, \in1\().8h |
| eor \in0\().16b, v8.16b, \in0\().16b |
| eor \in1\().16b, v9.16b, \in1\().16b |
| shl v12.4s, v10.4s, #24 |
| shl v13.4s, v11.4s, #24 |
| eor v8.16b, v8.16b, v10.16b |
| sri v12.4s, v10.4s, #8 |
| shl v10.4s, \in0\().4s, #24 |
| eor v9.16b, v9.16b, v11.16b |
| sri v13.4s, v11.4s, #8 |
| shl v11.4s, \in1\().4s, #24 |
| sri v10.4s, \in0\().4s, #8 |
| eor \in0\().16b, v8.16b, v12.16b |
| sri v11.4s, \in1\().4s, #8 |
| eor \in1\().16b, v9.16b, v13.16b |
| eor \in0\().16b, v10.16b, \in0\().16b |
| eor \in1\().16b, v11.16b, \in1\().16b |
| .endm |
| |
| .macro inv_mix_cols_2x, in0, in1 |
| mul_by_x_2x v8, v9, \in0, \in1, v10, v11, v14 |
| mul_by_x_2x v8, v9, v8, v9, v10, v11, v14 |
| eor \in0\().16b, \in0\().16b, v8.16b |
| eor \in1\().16b, \in1\().16b, v9.16b |
| rev32 v8.8h, v8.8h |
| rev32 v9.8h, v9.8h |
| eor \in0\().16b, \in0\().16b, v8.16b |
| eor \in1\().16b, \in1\().16b, v9.16b |
| mix_columns_2x \in0, \in1 |
| .endm |
| |
| .macro inv_mix_cols_4x, in0, in1, in2, in3 |
| mul_by_x_2x v8, v9, \in0, \in1, v10, v11, v14 |
| mul_by_x_2x v10, v11, \in2, \in3, v12, v13, v14 |
| mul_by_x_2x v8, v9, v8, v9, v12, v13, v14 |
| mul_by_x_2x v10, v11, v10, v11, v12, v13, v14 |
| eor \in0\().16b, \in0\().16b, v8.16b |
| eor \in1\().16b, \in1\().16b, v9.16b |
| eor \in2\().16b, \in2\().16b, v10.16b |
| eor \in3\().16b, \in3\().16b, v11.16b |
| rev32 v8.8h, v8.8h |
| rev32 v9.8h, v9.8h |
| rev32 v10.8h, v10.8h |
| rev32 v11.8h, v11.8h |
| eor \in0\().16b, \in0\().16b, v8.16b |
| eor \in1\().16b, \in1\().16b, v9.16b |
| eor \in2\().16b, \in2\().16b, v10.16b |
| eor \in3\().16b, \in3\().16b, v11.16b |
| mix_columns_2x \in0, \in1 |
| mix_columns_2x \in2, \in3 |
| .endm |
| |
| .macro do_block_2x, enc, in0, in1 rounds, rk, rkp, i |
| ld1 {v15.4s}, [\rk] |
| add \rkp, \rk, #16 |
| mov \i, \rounds |
| 1111: eor \in0\().16b, \in0\().16b, v15.16b /* ^round key */ |
| eor \in1\().16b, \in1\().16b, v15.16b /* ^round key */ |
| sub_bytes_2x \in0, \in1 |
| tbl \in0\().16b, {\in0\().16b}, v13.16b /* ShiftRows */ |
| tbl \in1\().16b, {\in1\().16b}, v13.16b /* ShiftRows */ |
| ld1 {v15.4s}, [\rkp], #16 |
| subs \i, \i, #1 |
| beq 2222f |
| .if \enc == 1 |
| mix_columns_2x \in0, \in1 |
| ldr q13, .LForward_ShiftRows |
| .else |
| inv_mix_cols_2x \in0, \in1 |
| ldr q13, .LReverse_ShiftRows |
| .endif |
| movi v12.16b, #0x40 |
| b 1111b |
| 2222: eor \in0\().16b, \in0\().16b, v15.16b /* ^round key */ |
| eor \in1\().16b, \in1\().16b, v15.16b /* ^round key */ |
| .endm |
| |
| .macro do_block_4x, enc, in0, in1, in2, in3, rounds, rk, rkp, i |
| ld1 {v15.4s}, [\rk] |
| add \rkp, \rk, #16 |
| mov \i, \rounds |
| 1111: eor \in0\().16b, \in0\().16b, v15.16b /* ^round key */ |
| eor \in1\().16b, \in1\().16b, v15.16b /* ^round key */ |
| eor \in2\().16b, \in2\().16b, v15.16b /* ^round key */ |
| eor \in3\().16b, \in3\().16b, v15.16b /* ^round key */ |
| sub_bytes_4x \in0, \in1, \in2, \in3 |
| tbl \in0\().16b, {\in0\().16b}, v13.16b /* ShiftRows */ |
| tbl \in1\().16b, {\in1\().16b}, v13.16b /* ShiftRows */ |
| tbl \in2\().16b, {\in2\().16b}, v13.16b /* ShiftRows */ |
| tbl \in3\().16b, {\in3\().16b}, v13.16b /* ShiftRows */ |
| ld1 {v15.4s}, [\rkp], #16 |
| subs \i, \i, #1 |
| beq 2222f |
| .if \enc == 1 |
| mix_columns_2x \in0, \in1 |
| mix_columns_2x \in2, \in3 |
| ldr q13, .LForward_ShiftRows |
| .else |
| inv_mix_cols_4x \in0, \in1, \in2, \in3 |
| ldr q13, .LReverse_ShiftRows |
| .endif |
| movi v12.16b, #0x40 |
| b 1111b |
| 2222: eor \in0\().16b, \in0\().16b, v15.16b /* ^round key */ |
| eor \in1\().16b, \in1\().16b, v15.16b /* ^round key */ |
| eor \in2\().16b, \in2\().16b, v15.16b /* ^round key */ |
| eor \in3\().16b, \in3\().16b, v15.16b /* ^round key */ |
| .endm |
| |
| .macro encrypt_block2x, in0, in1, rounds, rk, rkp, i |
| do_block_2x 1, \in0, \in1, \rounds, \rk, \rkp, \i |
| .endm |
| |
| .macro decrypt_block2x, in0, in1, rounds, rk, rkp, i |
| do_block_2x 0, \in0, \in1, \rounds, \rk, \rkp, \i |
| .endm |
| |
| .macro encrypt_block4x, in0, in1, in2, in3, rounds, rk, rkp, i |
| do_block_4x 1, \in0, \in1, \in2, \in3, \rounds, \rk, \rkp, \i |
| .endm |
| |
| .macro decrypt_block4x, in0, in1, in2, in3, rounds, rk, rkp, i |
| do_block_4x 0, \in0, \in1, \in2, \in3, \rounds, \rk, \rkp, \i |
| .endm |
| |
| #include "aes-modes.S" |
| |
| .text |
| .align 4 |
| .LForward_ShiftRows: |
| CPU_LE( .byte 0x0, 0x5, 0xa, 0xf, 0x4, 0x9, 0xe, 0x3 ) |
| CPU_LE( .byte 0x8, 0xd, 0x2, 0x7, 0xc, 0x1, 0x6, 0xb ) |
| CPU_BE( .byte 0xb, 0x6, 0x1, 0xc, 0x7, 0x2, 0xd, 0x8 ) |
| CPU_BE( .byte 0x3, 0xe, 0x9, 0x4, 0xf, 0xa, 0x5, 0x0 ) |
| |
| .LReverse_ShiftRows: |
| CPU_LE( .byte 0x0, 0xd, 0xa, 0x7, 0x4, 0x1, 0xe, 0xb ) |
| CPU_LE( .byte 0x8, 0x5, 0x2, 0xf, 0xc, 0x9, 0x6, 0x3 ) |
| CPU_BE( .byte 0x3, 0x6, 0x9, 0xc, 0xf, 0x2, 0x5, 0x8 ) |
| CPU_BE( .byte 0xb, 0xe, 0x1, 0x4, 0x7, 0xa, 0xd, 0x0 ) |
| |
| .LForward_Sbox: |
| .byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5 |
| .byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76 |
| .byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0 |
| .byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0 |
| .byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc |
| .byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15 |
| .byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a |
| .byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75 |
| .byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0 |
| .byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84 |
| .byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b |
| .byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf |
| .byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85 |
| .byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8 |
| .byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5 |
| .byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2 |
| .byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17 |
| .byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73 |
| .byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88 |
| .byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb |
| .byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c |
| .byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79 |
| .byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9 |
| .byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08 |
| .byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6 |
| .byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a |
| .byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e |
| .byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e |
| .byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94 |
| .byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf |
| .byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68 |
| .byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 |
| |
| .LReverse_Sbox: |
| .byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38 |
| .byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb |
| .byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87 |
| .byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb |
| .byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d |
| .byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e |
| .byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2 |
| .byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25 |
| .byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16 |
| .byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92 |
| .byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda |
| .byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84 |
| .byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a |
| .byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06 |
| .byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02 |
| .byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b |
| .byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea |
| .byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73 |
| .byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85 |
| .byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e |
| .byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89 |
| .byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b |
| .byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20 |
| .byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4 |
| .byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31 |
| .byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f |
| .byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d |
| .byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef |
| .byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0 |
| .byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61 |
| .byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26 |
| .byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d |
