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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Twofish Cipher 8-way parallel algorithm (AVX/x86_64) * * Copyright (C) 2012 Johannes Goetzfried * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> * * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi> */ #include <linux/linkage.h> #include <asm/frame.h> #include "glue_helper-asm-avx.S" .file "twofish-avx-x86_64-asm_64.S" .section .rodata.cst16.bswap128_mask, "aM", @progbits, 16 .align 16 .Lbswap128_mask: .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 .text /* structure of crypto context */ #define s0 0 #define s1 1024 #define s2 2048 #define s3 3072 #define w 4096 #define k 4128 /********************************************************************** 8-way AVX twofish **********************************************************************/ #define CTX %rdi #define RA1 %xmm0 #define RB1 %xmm1 #define RC1 %xmm2 #define RD1 %xmm3 #define RA2 %xmm4 #define RB2 %xmm5 #define RC2 %xmm6 #define RD2 %xmm7 #define RX0 %xmm8 #define RY0 %xmm9 #define RX1 %xmm10 #define RY1 %xmm11 #define RK1 %xmm12 #define RK2 %xmm13 #define RT %xmm14 #define RR %xmm15 #define RID1 %r13 #define RID1d %r13d #define RID2 %rsi #define RID2d %esi #define RGI1 %rdx #define RGI1bl %dl #define RGI1bh %dh #define RGI2 %rcx #define RGI2bl %cl #define RGI2bh %ch #define RGI3 %rax #define RGI3bl %al #define RGI3bh %ah #define RGI4 %rbx #define RGI4bl %bl #define RGI4bh %bh #define RGS1 %r8 #define RGS1d %r8d #define RGS2 %r9 #define RGS2d %r9d #define RGS3 %r10 #define RGS3d %r10d #define lookup_32bit(t0, t1, t2, t3, src, dst, interleave_op, il_reg) \ movzbl src ## bl, RID1d; \ movzbl src ## bh, RID2d; \ shrq $16, src; \ movl t0(CTX, RID1, 4), dst ## d; \ movl t1(CTX, RID2, 4), RID2d; \ movzbl src ## bl, RID1d; \ xorl RID2d, dst ## d; \ movzbl src ## bh, RID2d; \ interleave_op(il_reg); \ xorl t2(CTX, RID1, 4), dst ## d; \ xorl t3(CTX, RID2, 4), dst ## d; #define dummy(d) /* do nothing */ #define shr_next(reg) \ shrq $16, reg; #define G(gi1, gi2, x, t0, t1, t2, t3) \ lookup_32bit(t0, t1, t2, t3, ##gi1, RGS1, shr_next, ##gi1); \ lookup_32bit(t0, t1, t2, t3, ##gi2, RGS3, shr_next, ##gi2); \ \ lookup_32bit(t0, t1, t2, t3, ##gi1, RGS2, dummy, none); \ shlq $32, RGS2; \ orq RGS1, RGS2; \ lookup_32bit(t0, t1, t2, t3, ##gi2, RGS1, dummy, none); \ shlq $32, RGS1; \ orq RGS1, RGS3; #define round_head_2(a, b, x1, y1, x2, y2) \ vmovq b ## 1, RGI3; \ vpextrq $1, b ## 1, RGI4; \ \ G(RGI1, RGI2, x1, s0, s1, s2, s3); \ vmovq a ## 2, RGI1; \ vpextrq $1, a ## 2, RGI2; \ vmovq RGS2, x1; \ vpinsrq $1, RGS3, x1, x1; \ \ G(RGI3, RGI4, y1, s1, s2, s3, s0); \ vmovq b ## 2, RGI3; \ vpextrq $1, b ## 2, RGI4; \ vmovq RGS2, y1; \ vpinsrq $1, RGS3, y1, y1; \ \ G(RGI1, RGI2, x2, s0, s1, s2, s3); \ vmovq RGS2, x2; \ vpinsrq $1, RGS3, x2, x2; \ \ G(RGI3, RGI4, y2, s1, s2, s3, s0); \ vmovq RGS2, y2; \ vpinsrq $1, RGS3, y2, y2; #define encround_tail(a, b, c, d, x, y, prerotate) \ vpaddd x, y, x; \ vpaddd x, RK1, RT;\ prerotate(b); \ vpxor RT, c, c; \ vpaddd y, x, y; \ vpaddd y, RK2, y; \ vpsrld $1, c, RT; \ vpslld $(32 - 1), c, c; \ vpor c, RT, c; \ vpxor d, y, d; \ #define decround_tail(a, b, c, d, x, y, prerotate) \ vpaddd x, y, x; \ vpaddd x, RK1, RT;\ prerotate(a); \ vpxor RT, c, c; \ vpaddd y, x, y; \ vpaddd y, RK2, y; \ vpxor d, y, d; \ vpsrld $1, d, y; \ vpslld $(32 - 1), d, d; \ vpor d, y, d; \ #define rotate_1l(x) \ vpslld $1, x, RR; \ vpsrld $(32 - 1), x, x; \ vpor x, RR, x; #define preload_rgi(c) \ vmovq c, RGI1; \ vpextrq $1, c, RGI2; #define encrypt_round(n, a, b, c, d, preload, prerotate) \ vbroadcastss (k+4*(2*(n)))(CTX), RK1; \ vbroadcastss (k+4*(2*(n)+1))(CTX), RK2; \ round_head_2(a, b, RX0, RY0, RX1, RY1); \ encround_tail(a ## 1, b ## 1, c ## 1, d ## 1, RX0, RY0, prerotate); \ preload(c ## 1); \ encround_tail(a ## 2, b ## 2, c ## 2, d ## 2, RX1, RY1, prerotate); #define decrypt_round(n, a, b, c, d, preload, prerotate) \ vbroadcastss (k+4*(2*(n)))(CTX), RK1; \ vbroadcastss (k+4*(2*(n)+1))(CTX), RK2; \ round_head_2(a, b, RX0, RY0, RX1, RY1); \ decround_tail(a ## 1, b ## 1, c ## 1, d ## 1, RX0, RY0, prerotate); \ preload(c ## 1); \ decround_tail(a ## 2, b ## 2, c ## 2, d ## 2, RX1, RY1, prerotate); #define encrypt_cycle(n) \ encrypt_round((2*n), RA, RB, RC, RD, preload_rgi, rotate_1l); \ encrypt_round(((2*n) + 1), RC, RD, RA, RB, preload_rgi, rotate_1l); #define encrypt_cycle_last(n) \ encrypt_round((2*n), RA, RB, RC, RD, preload_rgi, rotate_1l); \ encrypt_round(((2*n) + 1), RC, RD, RA, RB, dummy, dummy); #define decrypt_cycle(n) \ decrypt_round(((2*n) + 1), RC, RD, RA, RB, preload_rgi, rotate_1l); \ decrypt_round((2*n), RA, RB, RC, RD, preload_rgi, rotate_1l); #define decrypt_cycle_last(n) \ decrypt_round(((2*n) + 1), RC, RD, RA, RB, preload_rgi, rotate_1l); \ decrypt_round((2*n), RA, RB, RC, RD, dummy, dummy); #define transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ vpunpckldq x1, x0, t0; \ vpunpckhdq x1, x0, t2; \ vpunpckldq x3, x2, t1; \ vpunpckhdq x3, x2, x3; \ \ vpunpcklqdq t1, t0, x0; \ vpunpckhqdq t1, t0, x1; \ vpunpcklqdq x3, t2, x2; \ vpunpckhqdq x3, t2, x3; #define inpack_blocks(x0, x1, x2, x3, wkey, t0, t1, t2) \ vpxor x0, wkey, x0; \ vpxor x1, wkey, x1; \ vpxor x2, wkey, x2; \ vpxor x3, wkey, x3; \ \ transpose_4x4(x0, x1, x2, x3, t0, t1, t2) #define outunpack_blocks(x0, x1, x2, x3, wkey, t0, t1, t2) \ transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ \ vpxor x0, wkey, x0; \ vpxor x1, wkey, x1; \ vpxor x2, wkey, x2; \ vpxor x3, wkey, x3; SYM_FUNC_START_LOCAL(__twofish_enc_blk8) /* input: * %rdi: ctx, CTX * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: blocks * output: * RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2: encrypted blocks */ vmovdqu w(CTX), RK1; pushq %r13; pushq %rbx; pushq %rcx; inpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2); preload_rgi(RA1); rotate_1l(RD1); inpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2); rotate_1l(RD2); encrypt_cycle(0); encrypt_cycle(1); encrypt_cycle(2); encrypt_cycle(3); encrypt_cycle(4); encrypt_cycle(5); encrypt_cycle(6); encrypt_cycle_last(7); vmovdqu (w+4*4)(CTX), RK1; popq %rcx; popq %rbx; popq %r13; outunpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2); outunpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2); RET; SYM_FUNC_END(__twofish_enc_blk8) SYM_FUNC_START_LOCAL(__twofish_dec_blk8) /* input: * %rdi: ctx, CTX * RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2: encrypted blocks * output: * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: decrypted blocks */ vmovdqu (w+4*4)(CTX), RK1; pushq %r13; pushq %rbx; inpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2); preload_rgi(RC1); rotate_1l(RA1); inpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2); rotate_1l(RA2); decrypt_cycle(7); decrypt_cycle(6); decrypt_cycle(5); decrypt_cycle(4); decrypt_cycle(3); decrypt_cycle(2); decrypt_cycle(1); decrypt_cycle_last(0); vmovdqu (w)(CTX), RK1; popq %rbx; popq %r13; outunpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2); outunpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2); RET; SYM_FUNC_END(__twofish_dec_blk8) SYM_FUNC_START(twofish_ecb_enc_8way) /* input: * %rdi: ctx, CTX * %rsi: dst * %rdx: src */ FRAME_BEGIN movq %rsi, %r11; load_8way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); call __twofish_enc_blk8; store_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); FRAME_END RET; SYM_FUNC_END(twofish_ecb_enc_8way) SYM_FUNC_START(twofish_ecb_dec_8way) /* input: * %rdi: ctx, CTX * %rsi: dst * %rdx: src */ FRAME_BEGIN movq %rsi, %r11; load_8way(%rdx, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); call __twofish_dec_blk8; store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); FRAME_END RET; SYM_FUNC_END(twofish_ecb_dec_8way) SYM_FUNC_START(twofish_cbc_dec_8way) /* input: * %rdi: ctx, CTX * %rsi: dst * %rdx: src */ FRAME_BEGIN pushq %r12; movq %rsi, %r11; movq %rdx, %r12; load_8way(%rdx, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); call __twofish_dec_blk8; store_cbc_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); popq %r12; FRAME_END RET; SYM_FUNC_END(twofish_cbc_dec_8way) |