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kernel-ark/arch/x86/crypto/camellia-aesni-avx-asm_64.S
Ard Biesheuvel a1f91ecf81 crypto: x86/camellia - drop CTR mode implementation 
Camellia in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.

Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-01-14 17:10:28 +11:00

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/*
* x86_64/AVX/AES-NI assembler implementation of Camellia
*
* Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
/*
* Version licensed under 2-clause BSD License is available at:
* http://koti.mbnet.fi/axh/crypto/camellia-BSD-1.2.0-aesni1.tar.xz
*/
#include <linux/linkage.h>
#include <asm/frame.h>
#define CAMELLIA_TABLE_BYTE_LEN 272
/* struct camellia_ctx: */
#define key_table 0
#define key_length CAMELLIA_TABLE_BYTE_LEN
/* register macros */
#define CTX %rdi
/**********************************************************************
16-way camellia
**********************************************************************/
#define filter_8bit(x, lo_t, hi_t, mask4bit, tmp0) \
vpand x, mask4bit, tmp0; \
vpandn x, mask4bit, x; \
vpsrld $4, x, x; \
\
vpshufb tmp0, lo_t, tmp0; \
vpshufb x, hi_t, x; \
vpxor tmp0, x, x;
/*
* IN:
* x0..x7: byte-sliced AB state
* mem_cd: register pointer storing CD state
* key: index for key material
* OUT:
* x0..x7: new byte-sliced CD state
*/
#define roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, t0, t1, t2, t3, t4, t5, t6, \
t7, mem_cd, key) \
/* \
* S-function with AES subbytes \
*/ \
vmovdqa .Linv_shift_row, t4; \
vbroadcastss .L0f0f0f0f, t7; \
vmovdqa .Lpre_tf_lo_s1, t0; \
vmovdqa .Lpre_tf_hi_s1, t1; \
\
/* AES inverse shift rows */ \
vpshufb t4, x0, x0; \
vpshufb t4, x7, x7; \
vpshufb t4, x1, x1; \
vpshufb t4, x4, x4; \
vpshufb t4, x2, x2; \
vpshufb t4, x5, x5; \
vpshufb t4, x3, x3; \
vpshufb t4, x6, x6; \
\
/* prefilter sboxes 1, 2 and 3 */ \
vmovdqa .Lpre_tf_lo_s4, t2; \
vmovdqa .Lpre_tf_hi_s4, t3; \
filter_8bit(x0, t0, t1, t7, t6); \
filter_8bit(x7, t0, t1, t7, t6); \
filter_8bit(x1, t0, t1, t7, t6); \
filter_8bit(x4, t0, t1, t7, t6); \
filter_8bit(x2, t0, t1, t7, t6); \
filter_8bit(x5, t0, t1, t7, t6); \
\
/* prefilter sbox 4 */ \
vpxor t4, t4, t4; \
filter_8bit(x3, t2, t3, t7, t6); \
filter_8bit(x6, t2, t3, t7, t6); \
\
/* AES subbytes + AES shift rows */ \
vmovdqa .Lpost_tf_lo_s1, t0; \
vmovdqa .Lpost_tf_hi_s1, t1; \
vaesenclast t4, x0, x0; \
vaesenclast t4, x7, x7; \
vaesenclast t4, x1, x1; \
vaesenclast t4, x4, x4; \
vaesenclast t4, x2, x2; \
vaesenclast t4, x5, x5; \
vaesenclast t4, x3, x3; \
vaesenclast t4, x6, x6; \
\
/* postfilter sboxes 1 and 4 */ \
vmovdqa .Lpost_tf_lo_s3, t2; \
vmovdqa .Lpost_tf_hi_s3, t3; \
filter_8bit(x0, t0, t1, t7, t6); \
filter_8bit(x7, t0, t1, t7, t6); \
filter_8bit(x3, t0, t1, t7, t6); \
filter_8bit(x6, t0, t1, t7, t6); \
\
/* postfilter sbox 3 */ \
vmovdqa .Lpost_tf_lo_s2, t4; \
vmovdqa .Lpost_tf_hi_s2, t5; \
filter_8bit(x2, t2, t3, t7, t6); \
filter_8bit(x5, t2, t3, t7, t6); \
\
vpxor t6, t6, t6; \
vmovq key, t0; \
\
/* postfilter sbox 2 */ \
filter_8bit(x1, t4, t5, t7, t2); \
filter_8bit(x4, t4, t5, t7, t2); \
\
vpsrldq $5, t0, t5; \
vpsrldq $1, t0, t1; \
vpsrldq $2, t0, t2; \
vpsrldq $3, t0, t3; \
vpsrldq $4, t0, t4; \
vpshufb t6, t0, t0; \
vpshufb t6, t1, t1; \
vpshufb t6, t2, t2; \
vpshufb t6, t3, t3; \
vpshufb t6, t4, t4; \
vpsrldq $2, t5, t7; \
vpshufb t6, t7, t7; \
\
/* \
* P-function \
*/ \
vpxor x5, x0, x0; \
vpxor x6, x1, x1; \
vpxor x7, x2, x2; \
vpxor x4, x3, x3; \
\
vpxor x2, x4, x4; \
vpxor x3, x5, x5; \
vpxor x0, x6, x6; \
vpxor x1, x7, x7; \
\
vpxor x7, x0, x0; \
vpxor x4, x1, x1; \
vpxor x5, x2, x2; \
vpxor x6, x3, x3; \
\
vpxor x3, x4, x4; \
vpxor x0, x5, x5; \
vpxor x1, x6, x6; \
vpxor x2, x7, x7; /* note: high and low parts swapped */ \
\
/* \
* Add key material and result to CD (x becomes new CD) \
*/ \
\
vpxor t3, x4, x4; \
vpxor 0 * 16(mem_cd), x4, x4; \
\
vpxor t2, x5, x5; \
vpxor 1 * 16(mem_cd), x5, x5; \
\
vpsrldq $1, t5, t3; \
vpshufb t6, t5, t5; \
vpshufb t6, t3, t6; \
\
vpxor t1, x6, x6; \
vpxor 2 * 16(mem_cd), x6, x6; \
\
vpxor t0, x7, x7; \
vpxor 3 * 16(mem_cd), x7, x7; \
\
vpxor t7, x0, x0; \
vpxor 4 * 16(mem_cd), x0, x0; \
\
vpxor t6, x1, x1; \
vpxor 5 * 16(mem_cd), x1, x1; \
\
vpxor t5, x2, x2; \
vpxor 6 * 16(mem_cd), x2, x2; \
\
vpxor t4, x3, x3; \
vpxor 7 * 16(mem_cd), x3, x3;
/*
* Size optimization... with inlined roundsm16, binary would be over 5 times
* larger and would only be 0.5% faster (on sandy-bridge).
*/
.align 8
SYM_FUNC_START_LOCAL(roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd)
roundsm16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, %xmm15,
%rcx, (%r9));
ret;
SYM_FUNC_END(roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd)
.align 8
SYM_FUNC_START_LOCAL(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
roundsm16(%xmm4, %xmm5, %xmm6, %xmm7, %xmm0, %xmm1, %xmm2, %xmm3,
%xmm12, %xmm13, %xmm14, %xmm15, %xmm8, %xmm9, %xmm10, %xmm11,
%rax, (%r9));
ret;
SYM_FUNC_END(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
/*
* IN/OUT:
* x0..x7: byte-sliced AB state preloaded
* mem_ab: byte-sliced AB state in memory
* mem_cb: byte-sliced CD state in memory
*/
#define two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, i, dir, store_ab) \
leaq (key_table + (i) * 8)(CTX), %r9; \
call roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd; \
\
vmovdqu x4, 0 * 16(mem_cd); \
vmovdqu x5, 1 * 16(mem_cd); \
vmovdqu x6, 2 * 16(mem_cd); \
vmovdqu x7, 3 * 16(mem_cd); \
vmovdqu x0, 4 * 16(mem_cd); \
vmovdqu x1, 5 * 16(mem_cd); \
vmovdqu x2, 6 * 16(mem_cd); \
vmovdqu x3, 7 * 16(mem_cd); \
\
leaq (key_table + ((i) + (dir)) * 8)(CTX), %r9; \
call roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab; \
\
store_ab(x0, x1, x2, x3, x4, x5, x6, x7, mem_ab);
#define dummy_store(x0, x1, x2, x3, x4, x5, x6, x7, mem_ab) /* do nothing */
#define store_ab_state(x0, x1, x2, x3, x4, x5, x6, x7, mem_ab) \
/* Store new AB state */ \
vmovdqu x0, 0 * 16(mem_ab); \
vmovdqu x1, 1 * 16(mem_ab); \
vmovdqu x2, 2 * 16(mem_ab); \
vmovdqu x3, 3 * 16(mem_ab); \
vmovdqu x4, 4 * 16(mem_ab); \
vmovdqu x5, 5 * 16(mem_ab); \
vmovdqu x6, 6 * 16(mem_ab); \
vmovdqu x7, 7 * 16(mem_ab);
#define enc_rounds16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, i) \
two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, (i) + 2, 1, store_ab_state); \
two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, (i) + 4, 1, store_ab_state); \
two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, (i) + 6, 1, dummy_store);
#define dec_rounds16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, i) \
two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, (i) + 7, -1, store_ab_state); \
two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, (i) + 5, -1, store_ab_state); \
two_roundsm16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd, (i) + 3, -1, dummy_store);
/*
* IN:
* v0..3: byte-sliced 32-bit integers
* OUT:
* v0..3: (IN <<< 1)
*/
#define rol32_1_16(v0, v1, v2, v3, t0, t1, t2, zero) \
vpcmpgtb v0, zero, t0; \
vpaddb v0, v0, v0; \
vpabsb t0, t0; \
\
vpcmpgtb v1, zero, t1; \
vpaddb v1, v1, v1; \
vpabsb t1, t1; \
\
vpcmpgtb v2, zero, t2; \
vpaddb v2, v2, v2; \
vpabsb t2, t2; \
\
vpor t0, v1, v1; \
\
vpcmpgtb v3, zero, t0; \
vpaddb v3, v3, v3; \
vpabsb t0, t0; \
\
vpor t1, v2, v2; \
vpor t2, v3, v3; \
vpor t0, v0, v0;
/*
* IN:
* r: byte-sliced AB state in memory
* l: byte-sliced CD state in memory
* OUT:
* x0..x7: new byte-sliced CD state
*/
#define fls16(l, l0, l1, l2, l3, l4, l5, l6, l7, r, t0, t1, t2, t3, tt0, \
tt1, tt2, tt3, kll, klr, krl, krr) \
/* \
* t0 = kll; \
* t0 &= ll; \
* lr ^= rol32(t0, 1); \
*/ \
vpxor tt0, tt0, tt0; \
vmovd kll, t0; \
vpshufb tt0, t0, t3; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t2; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t1; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t0; \
\
vpand l0, t0, t0; \
vpand l1, t1, t1; \
vpand l2, t2, t2; \
vpand l3, t3, t3; \
\
rol32_1_16(t3, t2, t1, t0, tt1, tt2, tt3, tt0); \
\
vpxor l4, t0, l4; \
vmovdqu l4, 4 * 16(l); \
vpxor l5, t1, l5; \
vmovdqu l5, 5 * 16(l); \
vpxor l6, t2, l6; \
vmovdqu l6, 6 * 16(l); \
vpxor l7, t3, l7; \
vmovdqu l7, 7 * 16(l); \
\
/* \
* t2 = krr; \
* t2 |= rr; \
* rl ^= t2; \
*/ \
\
vmovd krr, t0; \
vpshufb tt0, t0, t3; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t2; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t1; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t0; \
\
vpor 4 * 16(r), t0, t0; \
vpor 5 * 16(r), t1, t1; \
vpor 6 * 16(r), t2, t2; \
vpor 7 * 16(r), t3, t3; \
\
vpxor 0 * 16(r), t0, t0; \
vpxor 1 * 16(r), t1, t1; \
vpxor 2 * 16(r), t2, t2; \
vpxor 3 * 16(r), t3, t3; \
vmovdqu t0, 0 * 16(r); \
vmovdqu t1, 1 * 16(r); \
vmovdqu t2, 2 * 16(r); \
vmovdqu t3, 3 * 16(r); \
\
/* \
* t2 = krl; \
* t2 &= rl; \
* rr ^= rol32(t2, 1); \
*/ \
vmovd krl, t0; \
vpshufb tt0, t0, t3; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t2; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t1; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t0; \
\
vpand 0 * 16(r), t0, t0; \
vpand 1 * 16(r), t1, t1; \
vpand 2 * 16(r), t2, t2; \
vpand 3 * 16(r), t3, t3; \
\
rol32_1_16(t3, t2, t1, t0, tt1, tt2, tt3, tt0); \
\
vpxor 4 * 16(r), t0, t0; \
vpxor 5 * 16(r), t1, t1; \
vpxor 6 * 16(r), t2, t2; \
vpxor 7 * 16(r), t3, t3; \
vmovdqu t0, 4 * 16(r); \
vmovdqu t1, 5 * 16(r); \
vmovdqu t2, 6 * 16(r); \
vmovdqu t3, 7 * 16(r); \
\
/* \
* t0 = klr; \
* t0 |= lr; \
* ll ^= t0; \
*/ \
\
vmovd klr, t0; \
vpshufb tt0, t0, t3; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t2; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t1; \
vpsrldq $1, t0, t0; \
vpshufb tt0, t0, t0; \
\
vpor l4, t0, t0; \
vpor l5, t1, t1; \
vpor l6, t2, t2; \
vpor l7, t3, t3; \
\
vpxor l0, t0, l0; \
vmovdqu l0, 0 * 16(l); \
vpxor l1, t1, l1; \
vmovdqu l1, 1 * 16(l); \
vpxor l2, t2, l2; \
vmovdqu l2, 2 * 16(l); \
vpxor l3, t3, l3; \
vmovdqu l3, 3 * 16(l);
#define transpose_4x4(x0, x1, x2, x3, t1, t2) \
vpunpckhdq x1, x0, t2; \
vpunpckldq x1, x0, x0; \
\
vpunpckldq x3, x2, t1; \
vpunpckhdq x3, x2, x2; \
\
vpunpckhqdq t1, x0, x1; \
vpunpcklqdq t1, x0, x0; \
\
vpunpckhqdq x2, t2, x3; \
vpunpcklqdq x2, t2, x2;
#define byteslice_16x16b(a0, b0, c0, d0, a1, b1, c1, d1, a2, b2, c2, d2, a3, \
b3, c3, d3, st0, st1) \
vmovdqu d2, st0; \
vmovdqu d3, st1; \
transpose_4x4(a0, a1, a2, a3, d2, d3); \
transpose_4x4(b0, b1, b2, b3, d2, d3); \
vmovdqu st0, d2; \
vmovdqu st1, d3; \
\
vmovdqu a0, st0; \
vmovdqu a1, st1; \
transpose_4x4(c0, c1, c2, c3, a0, a1); \
transpose_4x4(d0, d1, d2, d3, a0, a1); \
\
vmovdqu .Lshufb_16x16b, a0; \
vmovdqu st1, a1; \
vpshufb a0, a2, a2; \
vpshufb a0, a3, a3; \
vpshufb a0, b0, b0; \
vpshufb a0, b1, b1; \
vpshufb a0, b2, b2; \
vpshufb a0, b3, b3; \
vpshufb a0, a1, a1; \
vpshufb a0, c0, c0; \
vpshufb a0, c1, c1; \
vpshufb a0, c2, c2; \
vpshufb a0, c3, c3; \
vpshufb a0, d0, d0; \
vpshufb a0, d1, d1; \
vpshufb a0, d2, d2; \
vpshufb a0, d3, d3; \
vmovdqu d3, st1; \
vmovdqu st0, d3; \
vpshufb a0, d3, a0; \
vmovdqu d2, st0; \
\
transpose_4x4(a0, b0, c0, d0, d2, d3); \
transpose_4x4(a1, b1, c1, d1, d2, d3); \
vmovdqu st0, d2; \
vmovdqu st1, d3; \
\
vmovdqu b0, st0; \
vmovdqu b1, st1; \
transpose_4x4(a2, b2, c2, d2, b0, b1); \
transpose_4x4(a3, b3, c3, d3, b0, b1); \
vmovdqu st0, b0; \
vmovdqu st1, b1; \
/* does not adjust output bytes inside vectors */
/* load blocks to registers and apply pre-whitening */
#define inpack16_pre(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, rio, key) \
vmovq key, x0; \
vpshufb .Lpack_bswap, x0, x0; \
\
vpxor 0 * 16(rio), x0, y7; \
vpxor 1 * 16(rio), x0, y6; \
vpxor 2 * 16(rio), x0, y5; \
vpxor 3 * 16(rio), x0, y4; \
vpxor 4 * 16(rio), x0, y3; \
vpxor 5 * 16(rio), x0, y2; \
vpxor 6 * 16(rio), x0, y1; \
vpxor 7 * 16(rio), x0, y0; \
vpxor 8 * 16(rio), x0, x7; \
vpxor 9 * 16(rio), x0, x6; \
vpxor 10 * 16(rio), x0, x5; \
vpxor 11 * 16(rio), x0, x4; \
vpxor 12 * 16(rio), x0, x3; \
vpxor 13 * 16(rio), x0, x2; \
vpxor 14 * 16(rio), x0, x1; \
vpxor 15 * 16(rio), x0, x0;
/* byteslice pre-whitened blocks and store to temporary memory */
#define inpack16_post(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, mem_ab, mem_cd) \
byteslice_16x16b(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, \
y5, y6, y7, (mem_ab), (mem_cd)); \
\
vmovdqu x0, 0 * 16(mem_ab); \
vmovdqu x1, 1 * 16(mem_ab); \
vmovdqu x2, 2 * 16(mem_ab); \
vmovdqu x3, 3 * 16(mem_ab); \
vmovdqu x4, 4 * 16(mem_ab); \
vmovdqu x5, 5 * 16(mem_ab); \
vmovdqu x6, 6 * 16(mem_ab); \
vmovdqu x7, 7 * 16(mem_ab); \
vmovdqu y0, 0 * 16(mem_cd); \
vmovdqu y1, 1 * 16(mem_cd); \
vmovdqu y2, 2 * 16(mem_cd); \
vmovdqu y3, 3 * 16(mem_cd); \
vmovdqu y4, 4 * 16(mem_cd); \
vmovdqu y5, 5 * 16(mem_cd); \
vmovdqu y6, 6 * 16(mem_cd); \
vmovdqu y7, 7 * 16(mem_cd);
/* de-byteslice, apply post-whitening and store blocks */
#define outunpack16(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, \
y5, y6, y7, key, stack_tmp0, stack_tmp1) \
byteslice_16x16b(y0, y4, x0, x4, y1, y5, x1, x5, y2, y6, x2, x6, y3, \
y7, x3, x7, stack_tmp0, stack_tmp1); \
\
vmovdqu x0, stack_tmp0; \
\
vmovq key, x0; \
vpshufb .Lpack_bswap, x0, x0; \
\
vpxor x0, y7, y7; \
vpxor x0, y6, y6; \
vpxor x0, y5, y5; \
vpxor x0, y4, y4; \
vpxor x0, y3, y3; \
vpxor x0, y2, y2; \
vpxor x0, y1, y1; \
vpxor x0, y0, y0; \
vpxor x0, x7, x7; \
vpxor x0, x6, x6; \
vpxor x0, x5, x5; \
vpxor x0, x4, x4; \
vpxor x0, x3, x3; \
vpxor x0, x2, x2; \
vpxor x0, x1, x1; \
vpxor stack_tmp0, x0, x0;
#define write_output(x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, \
y6, y7, rio) \
vmovdqu x0, 0 * 16(rio); \
vmovdqu x1, 1 * 16(rio); \
vmovdqu x2, 2 * 16(rio); \
vmovdqu x3, 3 * 16(rio); \
vmovdqu x4, 4 * 16(rio); \
vmovdqu x5, 5 * 16(rio); \
vmovdqu x6, 6 * 16(rio); \
vmovdqu x7, 7 * 16(rio); \
vmovdqu y0, 8 * 16(rio); \
vmovdqu y1, 9 * 16(rio); \
vmovdqu y2, 10 * 16(rio); \
vmovdqu y3, 11 * 16(rio); \
vmovdqu y4, 12 * 16(rio); \
vmovdqu y5, 13 * 16(rio); \
vmovdqu y6, 14 * 16(rio); \
vmovdqu y7, 15 * 16(rio);
/* NB: section is mergeable, all elements must be aligned 16-byte blocks */
.section .rodata.cst16, "aM", @progbits, 16
.align 16
#define SHUFB_BYTES(idx) \
0 + (idx), 4 + (idx), 8 + (idx), 12 + (idx)
.Lshufb_16x16b:
.byte SHUFB_BYTES(0), SHUFB_BYTES(1), SHUFB_BYTES(2), SHUFB_BYTES(3);
.Lpack_bswap:
.long 0x00010203
.long 0x04050607
.long 0x80808080
.long 0x80808080
/*
* pre-SubByte transform
*
* pre-lookup for sbox1, sbox2, sbox3:
* swap_bitendianness(
* isom_map_camellia_to_aes(
* camellia_f(
* swap_bitendianess(in)
* )
* )
* )
*
* (note: '⊕ 0xc5' inside camellia_f())
*/
.Lpre_tf_lo_s1:
.byte 0x45, 0xe8, 0x40, 0xed, 0x2e, 0x83, 0x2b, 0x86
.byte 0x4b, 0xe6, 0x4e, 0xe3, 0x20, 0x8d, 0x25, 0x88
.Lpre_tf_hi_s1:
.byte 0x00, 0x51, 0xf1, 0xa0, 0x8a, 0xdb, 0x7b, 0x2a
.byte 0x09, 0x58, 0xf8, 0xa9, 0x83, 0xd2, 0x72, 0x23
/*
* pre-SubByte transform
*
* pre-lookup for sbox4:
* swap_bitendianness(
* isom_map_camellia_to_aes(
* camellia_f(
* swap_bitendianess(in <<< 1)
* )
* )
* )
*
* (note: '⊕ 0xc5' inside camellia_f())
*/
.Lpre_tf_lo_s4:
.byte 0x45, 0x40, 0x2e, 0x2b, 0x4b, 0x4e, 0x20, 0x25
.byte 0x14, 0x11, 0x7f, 0x7a, 0x1a, 0x1f, 0x71, 0x74
.Lpre_tf_hi_s4:
.byte 0x00, 0xf1, 0x8a, 0x7b, 0x09, 0xf8, 0x83, 0x72
.byte 0xad, 0x5c, 0x27, 0xd6, 0xa4, 0x55, 0x2e, 0xdf
/*
* post-SubByte transform
*
* post-lookup for sbox1, sbox4:
* swap_bitendianness(
* camellia_h(
* isom_map_aes_to_camellia(
* swap_bitendianness(
* aes_inverse_affine_transform(in)
* )
* )
* )
* )
*
* (note: '⊕ 0x6e' inside camellia_h())
*/
.Lpost_tf_lo_s1:
.byte 0x3c, 0xcc, 0xcf, 0x3f, 0x32, 0xc2, 0xc1, 0x31
.byte 0xdc, 0x2c, 0x2f, 0xdf, 0xd2, 0x22, 0x21, 0xd1
.Lpost_tf_hi_s1:
.byte 0x00, 0xf9, 0x86, 0x7f, 0xd7, 0x2e, 0x51, 0xa8
.byte 0xa4, 0x5d, 0x22, 0xdb, 0x73, 0x8a, 0xf5, 0x0c
/*
* post-SubByte transform
*
* post-lookup for sbox2:
* swap_bitendianness(
* camellia_h(
* isom_map_aes_to_camellia(
* swap_bitendianness(
* aes_inverse_affine_transform(in)
* )
* )
* )
* ) <<< 1
*
* (note: '⊕ 0x6e' inside camellia_h())
*/
.Lpost_tf_lo_s2:
.byte 0x78, 0x99, 0x9f, 0x7e, 0x64, 0x85, 0x83, 0x62
.byte 0xb9, 0x58, 0x5e, 0xbf, 0xa5, 0x44, 0x42, 0xa3
.Lpost_tf_hi_s2:
.byte 0x00, 0xf3, 0x0d, 0xfe, 0xaf, 0x5c, 0xa2, 0x51
.byte 0x49, 0xba, 0x44, 0xb7, 0xe6, 0x15, 0xeb, 0x18
/*
* post-SubByte transform
*
* post-lookup for sbox3:
* swap_bitendianness(
* camellia_h(
* isom_map_aes_to_camellia(
* swap_bitendianness(
* aes_inverse_affine_transform(in)
* )
* )
* )
* ) >>> 1
*
* (note: '⊕ 0x6e' inside camellia_h())
*/
.Lpost_tf_lo_s3:
.byte 0x1e, 0x66, 0xe7, 0x9f, 0x19, 0x61, 0xe0, 0x98
.byte 0x6e, 0x16, 0x97, 0xef, 0x69, 0x11, 0x90, 0xe8
.Lpost_tf_hi_s3:
.byte 0x00, 0xfc, 0x43, 0xbf, 0xeb, 0x17, 0xa8, 0x54
.byte 0x52, 0xae, 0x11, 0xed, 0xb9, 0x45, 0xfa, 0x06
/* For isolating SubBytes from AESENCLAST, inverse shift row */
.Linv_shift_row:
.byte 0x00, 0x0d, 0x0a, 0x07, 0x04, 0x01, 0x0e, 0x0b
.byte 0x08, 0x05, 0x02, 0x0f, 0x0c, 0x09, 0x06, 0x03
/* 4-bit mask */
.section .rodata.cst4.L0f0f0f0f, "aM", @progbits, 4
.align 4
.L0f0f0f0f:
.long 0x0f0f0f0f
.text
.align 8
SYM_FUNC_START_LOCAL(__camellia_enc_blk16)
/* input:
* %rdi: ctx, CTX
* %rax: temporary storage, 256 bytes
* %xmm0..%xmm15: 16 plaintext blocks
* output:
* %xmm0..%xmm15: 16 encrypted blocks, order swapped:
* 7, 8, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8
*/
FRAME_BEGIN
leaq 8 * 16(%rax), %rcx;
inpack16_post(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx);
enc_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 0);
fls16(%rax, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%rcx, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15,
((key_table + (8) * 8) + 0)(CTX),
((key_table + (8) * 8) + 4)(CTX),
((key_table + (8) * 8) + 8)(CTX),
((key_table + (8) * 8) + 12)(CTX));
enc_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 8);
fls16(%rax, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%rcx, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15,
((key_table + (16) * 8) + 0)(CTX),
((key_table + (16) * 8) + 4)(CTX),
((key_table + (16) * 8) + 8)(CTX),
((key_table + (16) * 8) + 12)(CTX));
enc_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 16);
movl $24, %r8d;
cmpl $16, key_length(CTX);
jne .Lenc_max32;
.Lenc_done:
/* load CD for output */
vmovdqu 0 * 16(%rcx), %xmm8;
vmovdqu 1 * 16(%rcx), %xmm9;
vmovdqu 2 * 16(%rcx), %xmm10;
vmovdqu 3 * 16(%rcx), %xmm11;
vmovdqu 4 * 16(%rcx), %xmm12;
vmovdqu 5 * 16(%rcx), %xmm13;
vmovdqu 6 * 16(%rcx), %xmm14;
vmovdqu 7 * 16(%rcx), %xmm15;
outunpack16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 16(%rax));
FRAME_END
ret;
.align 8
.Lenc_max32:
movl $32, %r8d;
fls16(%rax, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%rcx, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15,
((key_table + (24) * 8) + 0)(CTX),
((key_table + (24) * 8) + 4)(CTX),
((key_table + (24) * 8) + 8)(CTX),
((key_table + (24) * 8) + 12)(CTX));
enc_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 24);
jmp .Lenc_done;
SYM_FUNC_END(__camellia_enc_blk16)
.align 8
SYM_FUNC_START_LOCAL(__camellia_dec_blk16)
/* input:
* %rdi: ctx, CTX
* %rax: temporary storage, 256 bytes
* %r8d: 24 for 16 byte key, 32 for larger
* %xmm0..%xmm15: 16 encrypted blocks
* output:
* %xmm0..%xmm15: 16 plaintext blocks, order swapped:
* 7, 8, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8
*/
FRAME_BEGIN
leaq 8 * 16(%rax), %rcx;
inpack16_post(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx);
cmpl $32, %r8d;
je .Ldec_max32;
.Ldec_max24:
dec_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 16);
fls16(%rax, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%rcx, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15,
((key_table + (16) * 8) + 8)(CTX),
((key_table + (16) * 8) + 12)(CTX),
((key_table + (16) * 8) + 0)(CTX),
((key_table + (16) * 8) + 4)(CTX));
dec_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 8);
fls16(%rax, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%rcx, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15,
((key_table + (8) * 8) + 8)(CTX),
((key_table + (8) * 8) + 12)(CTX),
((key_table + (8) * 8) + 0)(CTX),
((key_table + (8) * 8) + 4)(CTX));
dec_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 0);
/* load CD for output */
vmovdqu 0 * 16(%rcx), %xmm8;
vmovdqu 1 * 16(%rcx), %xmm9;
vmovdqu 2 * 16(%rcx), %xmm10;
vmovdqu 3 * 16(%rcx), %xmm11;
vmovdqu 4 * 16(%rcx), %xmm12;
vmovdqu 5 * 16(%rcx), %xmm13;
vmovdqu 6 * 16(%rcx), %xmm14;
vmovdqu 7 * 16(%rcx), %xmm15;
outunpack16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, (key_table)(CTX), (%rax), 1 * 16(%rax));
FRAME_END
ret;
.align 8
.Ldec_max32:
dec_rounds16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rax, %rcx, 24);
fls16(%rax, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%rcx, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15,
((key_table + (24) * 8) + 8)(CTX),
((key_table + (24) * 8) + 12)(CTX),
((key_table + (24) * 8) + 0)(CTX),
((key_table + (24) * 8) + 4)(CTX));
jmp .Ldec_max24;
SYM_FUNC_END(__camellia_dec_blk16)
SYM_FUNC_START(camellia_ecb_enc_16way)
/* input:
* %rdi: ctx, CTX
* %rsi: dst (16 blocks)
* %rdx: src (16 blocks)
*/
FRAME_BEGIN
inpack16_pre(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rdx, (key_table)(CTX));
/* now dst can be used as temporary buffer (even in src == dst case) */
movq %rsi, %rax;
call __camellia_enc_blk16;
write_output(%xmm7, %xmm6, %xmm5, %xmm4, %xmm3, %xmm2, %xmm1, %xmm0,
%xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
%xmm8, %rsi);
FRAME_END
ret;
SYM_FUNC_END(camellia_ecb_enc_16way)
SYM_FUNC_START(camellia_ecb_dec_16way)
/* input:
* %rdi: ctx, CTX
* %rsi: dst (16 blocks)
* %rdx: src (16 blocks)
*/
FRAME_BEGIN
cmpl $16, key_length(CTX);
movl $32, %r8d;
movl $24, %eax;
cmovel %eax, %r8d; /* max */
inpack16_pre(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rdx, (key_table)(CTX, %r8, 8));
/* now dst can be used as temporary buffer (even in src == dst case) */
movq %rsi, %rax;
call __camellia_dec_blk16;
write_output(%xmm7, %xmm6, %xmm5, %xmm4, %xmm3, %xmm2, %xmm1, %xmm0,
%xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
%xmm8, %rsi);
FRAME_END
ret;
SYM_FUNC_END(camellia_ecb_dec_16way)
SYM_FUNC_START(camellia_cbc_dec_16way)
/* input:
* %rdi: ctx, CTX
* %rsi: dst (16 blocks)
* %rdx: src (16 blocks)
*/
FRAME_BEGIN
cmpl $16, key_length(CTX);
movl $32, %r8d;
movl $24, %eax;
cmovel %eax, %r8d; /* max */
inpack16_pre(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
%xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
%xmm15, %rdx, (key_table)(CTX, %r8, 8));
/*
* dst might still be in-use (in case dst == src), so use stack for
* temporary storage.
*/
subq $(16 * 16), %rsp;
movq %rsp, %rax;
call __camellia_dec_blk16;
addq $(16 * 16), %rsp;
vpxor (0 * 16)(%rdx), %xmm6, %xmm6;
vpxor (1 * 16)(%rdx), %xmm5, %xmm5;
vpxor (2 * 16)(%rdx), %xmm4, %xmm4;
vpxor (3 * 16)(%rdx), %xmm3, %xmm3;
vpxor (4 * 16)(%rdx), %xmm2, %xmm2;
vpxor (5 * 16)(%rdx), %xmm1, %xmm1;
vpxor (6 * 16)(%rdx), %xmm0, %xmm0;
vpxor (7 * 16)(%rdx), %xmm15, %xmm15;
vpxor (8 * 16)(%rdx), %xmm14, %xmm14;
vpxor (9 * 16)(%rdx), %xmm13, %xmm13;
vpxor (10 * 16)(%rdx), %xmm12, %xmm12;
vpxor (11 * 16)(%rdx), %xmm11, %xmm11;
vpxor (12 * 16)(%rdx), %xmm10, %xmm10;
vpxor (13 * 16)(%rdx), %xmm9, %xmm9;
vpxor (14 * 16)(%rdx), %xmm8, %xmm8;
write_output(%xmm7, %xmm6, %xmm5, %xmm4, %xmm3, %xmm2, %xmm1, %xmm0,
%xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
%xmm8, %rsi);
FRAME_END
ret;
SYM_FUNC_END(camellia_cbc_dec_16way)
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