3312af6e07
We currently use an old version of libgcrypt which results in us having fewer ciphers and missing on many other improvements. Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
995 lines
31 KiB
C
995 lines
31 KiB
C
/* serpent-avx512-x86.c - AVX512 implementation of Serpent cipher
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*
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* Copyright (C) 2023 Jussi Kivilinna <jussi.kivilinna@iki.fi>
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#if defined(__x86_64) || defined(__i386)
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#if defined(HAVE_COMPATIBLE_CC_X86_AVX512_INTRINSICS) && \
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defined(USE_SERPENT) && defined(ENABLE_AVX512_SUPPORT)
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#include <immintrin.h>
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#include <string.h>
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#include <stdio.h>
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#include "g10lib.h"
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#include "types.h"
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#include "cipher.h"
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#include "bithelp.h"
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#include "bufhelp.h"
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#include "cipher-internal.h"
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#include "bulkhelp.h"
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#define ALWAYS_INLINE inline __attribute__((always_inline))
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#define NO_INLINE __attribute__((noinline))
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/* Number of rounds per Serpent encrypt/decrypt operation. */
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#define ROUNDS 32
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/* Serpent works on 128 bit blocks. */
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typedef unsigned int serpent_block_t[4];
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/* The key schedule consists of 33 128 bit subkeys. */
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typedef unsigned int serpent_subkeys_t[ROUNDS + 1][4];
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#define vpunpckhdq(a, b, o) ((o) = _mm512_unpackhi_epi32((b), (a)))
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#define vpunpckldq(a, b, o) ((o) = _mm512_unpacklo_epi32((b), (a)))
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#define vpunpckhqdq(a, b, o) ((o) = _mm512_unpackhi_epi64((b), (a)))
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#define vpunpcklqdq(a, b, o) ((o) = _mm512_unpacklo_epi64((b), (a)))
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#define vpbroadcastd(v) _mm512_set1_epi32(v)
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#define vrol(x, s) _mm512_rol_epi32((x), (s))
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#define vror(x, s) _mm512_ror_epi32((x), (s))
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#define vshl(x, s) _mm512_slli_epi32((x), (s))
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/* 4x4 32-bit integer matrix transpose */
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#define transpose_4x4(x0, x1, x2, x3, t1, t2, t3) \
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vpunpckhdq(x1, x0, t2); \
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vpunpckldq(x1, x0, x0); \
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\
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vpunpckldq(x3, x2, t1); \
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vpunpckhdq(x3, x2, x2); \
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\
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vpunpckhqdq(t1, x0, x1); \
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vpunpcklqdq(t1, x0, x0); \
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\
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vpunpckhqdq(x2, t2, x3); \
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vpunpcklqdq(x2, t2, x2);
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/*
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* These are the S-Boxes of Serpent from following research paper.
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*
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* D. A. Osvik, “Speeding up Serpent,” in Third AES Candidate Conference,
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* (New York, New York, USA), p. 317–329, National Institute of Standards and
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* Technology, 2000.
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*
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* Paper is also available at: http://www.ii.uib.no/~osvik/pub/aes3.pdf
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*
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* --
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*
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* Following logic gets heavily optimized by compiler to use AVX512F
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* 'vpternlogq' instruction. This gives higher performance increase than
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* would be expected from simple wideing of vectors from AVX2/256bit to
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* AVX512/512bit.
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*
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*/
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#define SBOX0(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r3 ^= r0; r4 = r1; \
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r1 &= r3; r4 ^= r2; \
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r1 ^= r0; r0 |= r3; \
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r0 ^= r4; r4 ^= r3; \
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r3 ^= r2; r2 |= r1; \
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r2 ^= r4; r4 = ~r4; \
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r4 |= r1; r1 ^= r3; \
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r1 ^= r4; r3 |= r0; \
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r1 ^= r3; r4 ^= r3; \
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\
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w = r1; x = r4; y = r2; z = r0; \
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}
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#define SBOX0_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r2 = ~r2; r4 = r1; \
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r1 |= r0; r4 = ~r4; \
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r1 ^= r2; r2 |= r4; \
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r1 ^= r3; r0 ^= r4; \
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r2 ^= r0; r0 &= r3; \
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r4 ^= r0; r0 |= r1; \
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r0 ^= r2; r3 ^= r4; \
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r2 ^= r1; r3 ^= r0; \
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r3 ^= r1; \
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r2 &= r3; \
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r4 ^= r2; \
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\
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w = r0; x = r4; y = r1; z = r3; \
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}
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#define SBOX1(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r0 = ~r0; r2 = ~r2; \
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r4 = r0; r0 &= r1; \
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r2 ^= r0; r0 |= r3; \
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r3 ^= r2; r1 ^= r0; \
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r0 ^= r4; r4 |= r1; \
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r1 ^= r3; r2 |= r0; \
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r2 &= r4; r0 ^= r1; \
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r1 &= r2; \
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r1 ^= r0; r0 &= r2; \
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r0 ^= r4; \
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\
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w = r2; x = r0; y = r3; z = r1; \
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}
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#define SBOX1_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r1; r1 ^= r3; \
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r3 &= r1; r4 ^= r2; \
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r3 ^= r0; r0 |= r1; \
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r2 ^= r3; r0 ^= r4; \
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r0 |= r2; r1 ^= r3; \
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r0 ^= r1; r1 |= r3; \
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r1 ^= r0; r4 = ~r4; \
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r4 ^= r1; r1 |= r0; \
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r1 ^= r0; \
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r1 |= r4; \
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r3 ^= r1; \
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\
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w = r4; x = r0; y = r3; z = r2; \
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}
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#define SBOX2(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r0; r0 &= r2; \
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r0 ^= r3; r2 ^= r1; \
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r2 ^= r0; r3 |= r4; \
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r3 ^= r1; r4 ^= r2; \
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r1 = r3; r3 |= r4; \
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r3 ^= r0; r0 &= r1; \
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r4 ^= r0; r1 ^= r3; \
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r1 ^= r4; r4 = ~r4; \
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\
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w = r2; x = r3; y = r1; z = r4; \
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}
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#define SBOX2_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r2 ^= r3; r3 ^= r0; \
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r4 = r3; r3 &= r2; \
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r3 ^= r1; r1 |= r2; \
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r1 ^= r4; r4 &= r3; \
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r2 ^= r3; r4 &= r0; \
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r4 ^= r2; r2 &= r1; \
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r2 |= r0; r3 = ~r3; \
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r2 ^= r3; r0 ^= r3; \
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r0 &= r1; r3 ^= r4; \
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r3 ^= r0; \
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\
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w = r1; x = r4; y = r2; z = r3; \
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}
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#define SBOX3(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r0; r0 |= r3; \
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r3 ^= r1; r1 &= r4; \
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r4 ^= r2; r2 ^= r3; \
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r3 &= r0; r4 |= r1; \
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r3 ^= r4; r0 ^= r1; \
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r4 &= r0; r1 ^= r3; \
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r4 ^= r2; r1 |= r0; \
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r1 ^= r2; r0 ^= r3; \
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r2 = r1; r1 |= r3; \
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r1 ^= r0; \
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\
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w = r1; x = r2; y = r3; z = r4; \
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}
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#define SBOX3_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r2; r2 ^= r1; \
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r0 ^= r2; r4 &= r2; \
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r4 ^= r0; r0 &= r1; \
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r1 ^= r3; r3 |= r4; \
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r2 ^= r3; r0 ^= r3; \
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r1 ^= r4; r3 &= r2; \
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r3 ^= r1; r1 ^= r0; \
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r1 |= r2; r0 ^= r3; \
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r1 ^= r4; \
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r0 ^= r1; \
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\
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w = r2; x = r1; y = r3; z = r0; \
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}
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#define SBOX4(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r1 ^= r3; r3 = ~r3; \
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r2 ^= r3; r3 ^= r0; \
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r4 = r1; r1 &= r3; \
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r1 ^= r2; r4 ^= r3; \
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r0 ^= r4; r2 &= r4; \
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r2 ^= r0; r0 &= r1; \
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r3 ^= r0; r4 |= r1; \
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r4 ^= r0; r0 |= r3; \
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r0 ^= r2; r2 &= r3; \
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r0 = ~r0; r4 ^= r2; \
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\
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w = r1; x = r4; y = r0; z = r3; \
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}
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#define SBOX4_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r2; r2 &= r3; \
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r2 ^= r1; r1 |= r3; \
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r1 &= r0; r4 ^= r2; \
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r4 ^= r1; r1 &= r2; \
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r0 = ~r0; r3 ^= r4; \
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r1 ^= r3; r3 &= r0; \
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r3 ^= r2; r0 ^= r1; \
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r2 &= r0; r3 ^= r0; \
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r2 ^= r4; \
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r2 |= r3; r3 ^= r0; \
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r2 ^= r1; \
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\
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w = r0; x = r3; y = r2; z = r4; \
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}
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#define SBOX5(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r0 ^= r1; r1 ^= r3; \
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r3 = ~r3; r4 = r1; \
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r1 &= r0; r2 ^= r3; \
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r1 ^= r2; r2 |= r4; \
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r4 ^= r3; r3 &= r1; \
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r3 ^= r0; r4 ^= r1; \
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r4 ^= r2; r2 ^= r0; \
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r0 &= r3; r2 = ~r2; \
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r0 ^= r4; r4 |= r3; \
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r2 ^= r4; \
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\
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w = r1; x = r3; y = r0; z = r2; \
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}
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#define SBOX5_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r1 = ~r1; r4 = r3; \
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r2 ^= r1; r3 |= r0; \
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r3 ^= r2; r2 |= r1; \
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r2 &= r0; r4 ^= r3; \
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r2 ^= r4; r4 |= r0; \
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r4 ^= r1; r1 &= r2; \
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r1 ^= r3; r4 ^= r2; \
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r3 &= r4; r4 ^= r1; \
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r3 ^= r4; r4 = ~r4; \
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r3 ^= r0; \
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\
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w = r1; x = r4; y = r3; z = r2; \
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}
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#define SBOX6(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r2 = ~r2; r4 = r3; \
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r3 &= r0; r0 ^= r4; \
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r3 ^= r2; r2 |= r4; \
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r1 ^= r3; r2 ^= r0; \
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r0 |= r1; r2 ^= r1; \
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r4 ^= r0; r0 |= r3; \
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r0 ^= r2; r4 ^= r3; \
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r4 ^= r0; r3 = ~r3; \
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r2 &= r4; \
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r2 ^= r3; \
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\
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w = r0; x = r1; y = r4; z = r2; \
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}
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#define SBOX6_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r0 ^= r2; r4 = r2; \
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r2 &= r0; r4 ^= r3; \
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r2 = ~r2; r3 ^= r1; \
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r2 ^= r3; r4 |= r0; \
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r0 ^= r2; r3 ^= r4; \
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r4 ^= r1; r1 &= r3; \
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r1 ^= r0; r0 ^= r3; \
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r0 |= r2; r3 ^= r1; \
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r4 ^= r0; \
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\
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w = r1; x = r2; y = r4; z = r3; \
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}
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#define SBOX7(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r1; r1 |= r2; \
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r1 ^= r3; r4 ^= r2; \
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r2 ^= r1; r3 |= r4; \
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r3 &= r0; r4 ^= r2; \
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r3 ^= r1; r1 |= r4; \
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r1 ^= r0; r0 |= r4; \
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r0 ^= r2; r1 ^= r4; \
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r2 ^= r1; r1 &= r0; \
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r1 ^= r4; r2 = ~r2; \
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r2 |= r0; \
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r4 ^= r2; \
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\
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w = r4; x = r3; y = r1; z = r0; \
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}
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#define SBOX7_INVERSE(r0, r1, r2, r3, w, x, y, z) \
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{ \
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__m512i r4; \
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\
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r4 = r2; r2 ^= r0; \
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r0 &= r3; r4 |= r3; \
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r2 = ~r2; r3 ^= r1; \
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r1 |= r0; r0 ^= r2; \
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r2 &= r4; r3 &= r4; \
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r1 ^= r2; r2 ^= r0; \
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r0 |= r2; r4 ^= r1; \
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r0 ^= r3; r3 ^= r4; \
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r4 |= r0; r3 ^= r2; \
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r4 ^= r2; \
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\
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w = r3; x = r0; y = r1; z = r4; \
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}
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/* XOR BLOCK1 into BLOCK0. */
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#define BLOCK_XOR_KEY(block0, rkey) \
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{ \
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block0[0] ^= vpbroadcastd(rkey[0]); \
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block0[1] ^= vpbroadcastd(rkey[1]); \
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block0[2] ^= vpbroadcastd(rkey[2]); \
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block0[3] ^= vpbroadcastd(rkey[3]); \
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}
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/* Copy BLOCK_SRC to BLOCK_DST. */
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#define BLOCK_COPY(block_dst, block_src) \
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{ \
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block_dst[0] = block_src[0]; \
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block_dst[1] = block_src[1]; \
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block_dst[2] = block_src[2]; \
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block_dst[3] = block_src[3]; \
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}
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/* Apply SBOX number WHICH to to the block found in ARRAY0, writing
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the output to the block found in ARRAY1. */
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#define SBOX(which, array0, array1) \
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SBOX##which (array0[0], array0[1], array0[2], array0[3], \
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array1[0], array1[1], array1[2], array1[3]);
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/* Apply inverse SBOX number WHICH to to the block found in ARRAY0, writing
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the output to the block found in ARRAY1. */
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#define SBOX_INVERSE(which, array0, array1) \
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SBOX##which##_INVERSE (array0[0], array0[1], array0[2], array0[3], \
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array1[0], array1[1], array1[2], array1[3]);
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/* Apply the linear transformation to BLOCK. */
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#define LINEAR_TRANSFORMATION(block) \
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{ \
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block[0] = vrol (block[0], 13); \
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block[2] = vrol (block[2], 3); \
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block[1] = block[1] ^ block[0] ^ block[2]; \
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block[3] = block[3] ^ block[2] ^ vshl(block[0], 3); \
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block[1] = vrol (block[1], 1); \
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block[3] = vrol (block[3], 7); \
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block[0] = block[0] ^ block[1] ^ block[3]; \
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block[2] = block[2] ^ block[3] ^ vshl(block[1], 7); \
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block[0] = vrol (block[0], 5); \
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block[2] = vrol (block[2], 22); \
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}
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|
||
/* Apply the inverse linear transformation to BLOCK. */
|
||
#define LINEAR_TRANSFORMATION_INVERSE(block) \
|
||
{ \
|
||
block[2] = vror (block[2], 22); \
|
||
block[0] = vror (block[0] , 5); \
|
||
block[2] = block[2] ^ block[3] ^ vshl(block[1], 7); \
|
||
block[0] = block[0] ^ block[1] ^ block[3]; \
|
||
block[3] = vror (block[3], 7); \
|
||
block[1] = vror (block[1], 1); \
|
||
block[3] = block[3] ^ block[2] ^ vshl(block[0], 3); \
|
||
block[1] = block[1] ^ block[0] ^ block[2]; \
|
||
block[2] = vror (block[2], 3); \
|
||
block[0] = vror (block[0], 13); \
|
||
}
|
||
|
||
/* Apply a Serpent round to BLOCK, using the SBOX number WHICH and the
|
||
subkeys contained in SUBKEYS. Use BLOCK_TMP as temporary storage.
|
||
This macro increments `round'. */
|
||
#define ROUND(which, subkeys, block, block_tmp) \
|
||
{ \
|
||
BLOCK_XOR_KEY (block, subkeys[round]); \
|
||
SBOX (which, block, block_tmp); \
|
||
LINEAR_TRANSFORMATION (block_tmp); \
|
||
BLOCK_COPY (block, block_tmp); \
|
||
}
|
||
|
||
/* Apply the last Serpent round to BLOCK, using the SBOX number WHICH
|
||
and the subkeys contained in SUBKEYS. Use BLOCK_TMP as temporary
|
||
storage. The result will be stored in BLOCK_TMP. This macro
|
||
increments `round'. */
|
||
#define ROUND_LAST(which, subkeys, block, block_tmp) \
|
||
{ \
|
||
BLOCK_XOR_KEY (block, subkeys[round]); \
|
||
SBOX (which, block, block_tmp); \
|
||
BLOCK_XOR_KEY (block_tmp, subkeys[round+1]); \
|
||
}
|
||
|
||
/* Apply an inverse Serpent round to BLOCK, using the SBOX number
|
||
WHICH and the subkeys contained in SUBKEYS. Use BLOCK_TMP as
|
||
temporary storage. This macro increments `round'. */
|
||
#define ROUND_INVERSE(which, subkey, block, block_tmp) \
|
||
{ \
|
||
LINEAR_TRANSFORMATION_INVERSE (block); \
|
||
SBOX_INVERSE (which, block, block_tmp); \
|
||
BLOCK_XOR_KEY (block_tmp, subkey[round]); \
|
||
BLOCK_COPY (block, block_tmp); \
|
||
}
|
||
|
||
/* Apply the first Serpent round to BLOCK, using the SBOX number WHICH
|
||
and the subkeys contained in SUBKEYS. Use BLOCK_TMP as temporary
|
||
storage. The result will be stored in BLOCK_TMP. This macro
|
||
increments `round'. */
|
||
#define ROUND_FIRST_INVERSE(which, subkeys, block, block_tmp) \
|
||
{ \
|
||
BLOCK_XOR_KEY (block, subkeys[round]); \
|
||
SBOX_INVERSE (which, block, block_tmp); \
|
||
BLOCK_XOR_KEY (block_tmp, subkeys[round-1]); \
|
||
}
|
||
|
||
static ALWAYS_INLINE void
|
||
serpent_encrypt_internal_avx512 (const serpent_subkeys_t keys,
|
||
const __m512i vin[8], __m512i vout[8])
|
||
{
|
||
__m512i b[4];
|
||
__m512i c[4];
|
||
__m512i b_next[4];
|
||
__m512i c_next[4];
|
||
int round = 0;
|
||
|
||
b_next[0] = vin[0];
|
||
b_next[1] = vin[1];
|
||
b_next[2] = vin[2];
|
||
b_next[3] = vin[3];
|
||
c_next[0] = vin[4];
|
||
c_next[1] = vin[5];
|
||
c_next[2] = vin[6];
|
||
c_next[3] = vin[7];
|
||
transpose_4x4 (b_next[0], b_next[1], b_next[2], b_next[3], b[0], b[1], b[2]);
|
||
transpose_4x4 (c_next[0], c_next[1], c_next[2], c_next[3], c[0], c[1], c[2]);
|
||
|
||
b[0] = b_next[0];
|
||
b[1] = b_next[1];
|
||
b[2] = b_next[2];
|
||
b[3] = b_next[3];
|
||
c[0] = c_next[0];
|
||
c[1] = c_next[1];
|
||
c[2] = c_next[2];
|
||
c[3] = c_next[3];
|
||
|
||
while (1)
|
||
{
|
||
ROUND (0, keys, b, b_next); ROUND (0, keys, c, c_next); round++;
|
||
ROUND (1, keys, b, b_next); ROUND (1, keys, c, c_next); round++;
|
||
ROUND (2, keys, b, b_next); ROUND (2, keys, c, c_next); round++;
|
||
ROUND (3, keys, b, b_next); ROUND (3, keys, c, c_next); round++;
|
||
ROUND (4, keys, b, b_next); ROUND (4, keys, c, c_next); round++;
|
||
ROUND (5, keys, b, b_next); ROUND (5, keys, c, c_next); round++;
|
||
ROUND (6, keys, b, b_next); ROUND (6, keys, c, c_next); round++;
|
||
if (round >= ROUNDS - 1)
|
||
break;
|
||
ROUND (7, keys, b, b_next); ROUND (7, keys, c, c_next); round++;
|
||
}
|
||
|
||
ROUND_LAST (7, keys, b, b_next); ROUND_LAST (7, keys, c, c_next);
|
||
|
||
transpose_4x4 (b_next[0], b_next[1], b_next[2], b_next[3], b[0], b[1], b[2]);
|
||
transpose_4x4 (c_next[0], c_next[1], c_next[2], c_next[3], c[0], c[1], c[2]);
|
||
vout[0] = b_next[0];
|
||
vout[1] = b_next[1];
|
||
vout[2] = b_next[2];
|
||
vout[3] = b_next[3];
|
||
vout[4] = c_next[0];
|
||
vout[5] = c_next[1];
|
||
vout[6] = c_next[2];
|
||
vout[7] = c_next[3];
|
||
}
|
||
|
||
static ALWAYS_INLINE void
|
||
serpent_decrypt_internal_avx512 (const serpent_subkeys_t keys,
|
||
const __m512i vin[8], __m512i vout[8])
|
||
{
|
||
__m512i b[4];
|
||
__m512i c[4];
|
||
__m512i b_next[4];
|
||
__m512i c_next[4];
|
||
int round = ROUNDS;
|
||
|
||
b_next[0] = vin[0];
|
||
b_next[1] = vin[1];
|
||
b_next[2] = vin[2];
|
||
b_next[3] = vin[3];
|
||
c_next[0] = vin[4];
|
||
c_next[1] = vin[5];
|
||
c_next[2] = vin[6];
|
||
c_next[3] = vin[7];
|
||
transpose_4x4 (b_next[0], b_next[1], b_next[2], b_next[3], b[0], b[1], b[2]);
|
||
transpose_4x4 (c_next[0], c_next[1], c_next[2], c_next[3], c[0], c[1], c[2]);
|
||
|
||
ROUND_FIRST_INVERSE (7, keys, b_next, b); ROUND_FIRST_INVERSE (7, keys, c_next, c);
|
||
round -= 2;
|
||
|
||
while (1)
|
||
{
|
||
ROUND_INVERSE (6, keys, b, b_next); ROUND_INVERSE (6, keys, c, c_next); round--;
|
||
ROUND_INVERSE (5, keys, b, b_next); ROUND_INVERSE (5, keys, c, c_next); round--;
|
||
ROUND_INVERSE (4, keys, b, b_next); ROUND_INVERSE (4, keys, c, c_next); round--;
|
||
ROUND_INVERSE (3, keys, b, b_next); ROUND_INVERSE (3, keys, c, c_next); round--;
|
||
ROUND_INVERSE (2, keys, b, b_next); ROUND_INVERSE (2, keys, c, c_next); round--;
|
||
ROUND_INVERSE (1, keys, b, b_next); ROUND_INVERSE (1, keys, c, c_next); round--;
|
||
ROUND_INVERSE (0, keys, b, b_next); ROUND_INVERSE (0, keys, c, c_next); round--;
|
||
if (round <= 0)
|
||
break;
|
||
ROUND_INVERSE (7, keys, b, b_next); ROUND_INVERSE (7, keys, c, c_next); round--;
|
||
}
|
||
|
||
transpose_4x4 (b_next[0], b_next[1], b_next[2], b_next[3], b[0], b[1], b[2]);
|
||
transpose_4x4 (c_next[0], c_next[1], c_next[2], c_next[3], c[0], c[1], c[2]);
|
||
vout[0] = b_next[0];
|
||
vout[1] = b_next[1];
|
||
vout[2] = b_next[2];
|
||
vout[3] = b_next[3];
|
||
vout[4] = c_next[0];
|
||
vout[5] = c_next[1];
|
||
vout[6] = c_next[2];
|
||
vout[7] = c_next[3];
|
||
}
|
||
|
||
enum crypt_mode_e
|
||
{
|
||
ECB_ENC = 0,
|
||
ECB_DEC,
|
||
CBC_DEC,
|
||
CFB_DEC,
|
||
CTR_ENC,
|
||
OCB_ENC,
|
||
OCB_DEC
|
||
};
|
||
|
||
static ALWAYS_INLINE void
|
||
ctr_generate(unsigned char *ctr, __m512i vin[8])
|
||
{
|
||
const unsigned int blocksize = 16;
|
||
unsigned char ctr_low = ctr[15];
|
||
|
||
if (ctr_low + 32 <= 256)
|
||
{
|
||
const __m512i add0123 = _mm512_set_epi64(3LL << 56, 0,
|
||
2LL << 56, 0,
|
||
1LL << 56, 0,
|
||
0LL << 56, 0);
|
||
const __m512i add4444 = _mm512_set_epi64(4LL << 56, 0,
|
||
4LL << 56, 0,
|
||
4LL << 56, 0,
|
||
4LL << 56, 0);
|
||
const __m512i add4567 = _mm512_add_epi32(add0123, add4444);
|
||
const __m512i add8888 = _mm512_add_epi32(add4444, add4444);
|
||
|
||
// Fast path without carry handling.
|
||
__m512i vctr =
|
||
_mm512_broadcast_i32x4(_mm_loadu_si128((const void *)ctr));
|
||
|
||
cipher_block_add(ctr, 32, blocksize);
|
||
vin[0] = _mm512_add_epi32(vctr, add0123);
|
||
vin[1] = _mm512_add_epi32(vctr, add4567);
|
||
vin[2] = _mm512_add_epi32(vin[0], add8888);
|
||
vin[3] = _mm512_add_epi32(vin[1], add8888);
|
||
vin[4] = _mm512_add_epi32(vin[2], add8888);
|
||
vin[5] = _mm512_add_epi32(vin[3], add8888);
|
||
vin[6] = _mm512_add_epi32(vin[4], add8888);
|
||
vin[7] = _mm512_add_epi32(vin[5], add8888);
|
||
}
|
||
else
|
||
{
|
||
// Slow path.
|
||
u32 blocks[4][blocksize / sizeof(u32)];
|
||
|
||
cipher_block_cpy(blocks[0], ctr, blocksize);
|
||
cipher_block_cpy(blocks[1], ctr, blocksize);
|
||
cipher_block_cpy(blocks[2], ctr, blocksize);
|
||
cipher_block_cpy(blocks[3], ctr, blocksize);
|
||
cipher_block_add(ctr, 32, blocksize);
|
||
cipher_block_add(blocks[1], 1, blocksize);
|
||
cipher_block_add(blocks[2], 2, blocksize);
|
||
cipher_block_add(blocks[3], 3, blocksize);
|
||
vin[0] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[1] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[2] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[3] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[4] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[5] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[6] = _mm512_loadu_epi32 (blocks);
|
||
cipher_block_add(blocks[0], 4, blocksize);
|
||
cipher_block_add(blocks[1], 4, blocksize);
|
||
cipher_block_add(blocks[2], 4, blocksize);
|
||
cipher_block_add(blocks[3], 4, blocksize);
|
||
vin[7] = _mm512_loadu_epi32 (blocks);
|
||
|
||
wipememory(blocks, sizeof(blocks));
|
||
}
|
||
}
|
||
|
||
static ALWAYS_INLINE __m512i
|
||
ocb_input(__m512i *vchecksum, __m128i *voffset, const unsigned char *input,
|
||
unsigned char *output, const ocb_L_uintptr_t L[4])
|
||
{
|
||
__m128i L0 = _mm_loadu_si128((const void *)(uintptr_t)L[0]);
|
||
__m128i L1 = _mm_loadu_si128((const void *)(uintptr_t)L[1]);
|
||
__m128i L2 = _mm_loadu_si128((const void *)(uintptr_t)L[2]);
|
||
__m128i L3 = _mm_loadu_si128((const void *)(uintptr_t)L[3]);
|
||
__m512i vin = _mm512_loadu_epi32 (input);
|
||
__m512i voffsets;
|
||
|
||
/* Offset_i = Offset_{i-1} xor L_{ntz(i)} */
|
||
/* Checksum_i = Checksum_{i-1} xor P_i */
|
||
/* C_i = Offset_i xor ENCIPHER(K, P_i xor Offset_i) */
|
||
|
||
if (vchecksum)
|
||
*vchecksum ^= _mm512_loadu_epi32 (input);
|
||
|
||
*voffset ^= L0;
|
||
voffsets = _mm512_castsi128_si512(*voffset);
|
||
*voffset ^= L1;
|
||
voffsets = _mm512_inserti32x4(voffsets, *voffset, 1);
|
||
*voffset ^= L2;
|
||
voffsets = _mm512_inserti32x4(voffsets, *voffset, 2);
|
||
*voffset ^= L3;
|
||
voffsets = _mm512_inserti32x4(voffsets, *voffset, 3);
|
||
_mm512_storeu_epi32 (output, voffsets);
|
||
|
||
return vin ^ voffsets;
|
||
}
|
||
|
||
static NO_INLINE void
|
||
serpent_avx512_blk32(const void *c, unsigned char *output,
|
||
const unsigned char *input, int mode,
|
||
unsigned char *iv, unsigned char *checksum,
|
||
const ocb_L_uintptr_t Ls[32])
|
||
{
|
||
__m512i vin[8];
|
||
__m512i vout[8];
|
||
int encrypt = 1;
|
||
|
||
asm volatile ("vpxor %%ymm0, %%ymm0, %%ymm0;\n\t"
|
||
"vpopcntb %%zmm0, %%zmm6;\n\t" /* spec stop for old AVX512 CPUs */
|
||
"vpxor %%ymm6, %%ymm6, %%ymm6;\n\t"
|
||
:
|
||
: "m"(*input), "m"(*output)
|
||
: "xmm6", "xmm0", "memory", "cc");
|
||
|
||
// Input handling
|
||
switch (mode)
|
||
{
|
||
default:
|
||
case CBC_DEC:
|
||
case ECB_DEC:
|
||
encrypt = 0;
|
||
/* fall through */
|
||
case ECB_ENC:
|
||
vin[0] = _mm512_loadu_epi32 (input + 0 * 64);
|
||
vin[1] = _mm512_loadu_epi32 (input + 1 * 64);
|
||
vin[2] = _mm512_loadu_epi32 (input + 2 * 64);
|
||
vin[3] = _mm512_loadu_epi32 (input + 3 * 64);
|
||
vin[4] = _mm512_loadu_epi32 (input + 4 * 64);
|
||
vin[5] = _mm512_loadu_epi32 (input + 5 * 64);
|
||
vin[6] = _mm512_loadu_epi32 (input + 6 * 64);
|
||
vin[7] = _mm512_loadu_epi32 (input + 7 * 64);
|
||
break;
|
||
|
||
case CFB_DEC:
|
||
{
|
||
__m128i viv;
|
||
vin[0] = _mm512_maskz_loadu_epi32(_cvtu32_mask16(0xfff0),
|
||
input - 1 * 64 + 48)
|
||
^ _mm512_maskz_loadu_epi32(_cvtu32_mask16(0x000f), iv);
|
||
vin[1] = _mm512_loadu_epi32(input + 0 * 64 + 48);
|
||
vin[2] = _mm512_loadu_epi32(input + 1 * 64 + 48);
|
||
vin[3] = _mm512_loadu_epi32(input + 2 * 64 + 48);
|
||
vin[4] = _mm512_loadu_epi32(input + 3 * 64 + 48);
|
||
vin[5] = _mm512_loadu_epi32(input + 4 * 64 + 48);
|
||
vin[6] = _mm512_loadu_epi32(input + 5 * 64 + 48);
|
||
vin[7] = _mm512_loadu_epi32(input + 6 * 64 + 48);
|
||
viv = _mm_loadu_si128((const void *)(input + 7 * 64 + 48));
|
||
_mm_storeu_si128((void *)iv, viv);
|
||
break;
|
||
}
|
||
|
||
case CTR_ENC:
|
||
ctr_generate(iv, vin);
|
||
break;
|
||
|
||
case OCB_ENC:
|
||
{
|
||
const ocb_L_uintptr_t *L = Ls;
|
||
__m512i vchecksum = _mm512_setzero_epi32();
|
||
__m128i vchecksum128 = _mm_loadu_si128((const void *)checksum);
|
||
__m128i voffset = _mm_loadu_si128((const void *)iv);
|
||
vin[0] = ocb_input(&vchecksum, &voffset, input + 0 * 64, output + 0 * 64, L); L += 4;
|
||
vin[1] = ocb_input(&vchecksum, &voffset, input + 1 * 64, output + 1 * 64, L); L += 4;
|
||
vin[2] = ocb_input(&vchecksum, &voffset, input + 2 * 64, output + 2 * 64, L); L += 4;
|
||
vin[3] = ocb_input(&vchecksum, &voffset, input + 3 * 64, output + 3 * 64, L); L += 4;
|
||
vin[4] = ocb_input(&vchecksum, &voffset, input + 4 * 64, output + 4 * 64, L); L += 4;
|
||
vin[5] = ocb_input(&vchecksum, &voffset, input + 5 * 64, output + 5 * 64, L); L += 4;
|
||
vin[6] = ocb_input(&vchecksum, &voffset, input + 6 * 64, output + 6 * 64, L); L += 4;
|
||
vin[7] = ocb_input(&vchecksum, &voffset, input + 7 * 64, output + 7 * 64, L);
|
||
vchecksum128 ^= _mm512_extracti32x4_epi32(vchecksum, 0)
|
||
^ _mm512_extracti32x4_epi32(vchecksum, 1)
|
||
^ _mm512_extracti32x4_epi32(vchecksum, 2)
|
||
^ _mm512_extracti32x4_epi32(vchecksum, 3);
|
||
_mm_storeu_si128((void *)checksum, vchecksum128);
|
||
_mm_storeu_si128((void *)iv, voffset);
|
||
break;
|
||
}
|
||
|
||
case OCB_DEC:
|
||
{
|
||
const ocb_L_uintptr_t *L = Ls;
|
||
__m128i voffset = _mm_loadu_si128((const void *)iv);
|
||
encrypt = 0;
|
||
vin[0] = ocb_input(NULL, &voffset, input + 0 * 64, output + 0 * 64, L); L += 4;
|
||
vin[1] = ocb_input(NULL, &voffset, input + 1 * 64, output + 1 * 64, L); L += 4;
|
||
vin[2] = ocb_input(NULL, &voffset, input + 2 * 64, output + 2 * 64, L); L += 4;
|
||
vin[3] = ocb_input(NULL, &voffset, input + 3 * 64, output + 3 * 64, L); L += 4;
|
||
vin[4] = ocb_input(NULL, &voffset, input + 4 * 64, output + 4 * 64, L); L += 4;
|
||
vin[5] = ocb_input(NULL, &voffset, input + 5 * 64, output + 5 * 64, L); L += 4;
|
||
vin[6] = ocb_input(NULL, &voffset, input + 6 * 64, output + 6 * 64, L); L += 4;
|
||
vin[7] = ocb_input(NULL, &voffset, input + 7 * 64, output + 7 * 64, L);
|
||
_mm_storeu_si128((void *)iv, voffset);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (encrypt)
|
||
serpent_encrypt_internal_avx512(c, vin, vout);
|
||
else
|
||
serpent_decrypt_internal_avx512(c, vin, vout);
|
||
|
||
switch (mode)
|
||
{
|
||
case CTR_ENC:
|
||
case CFB_DEC:
|
||
vout[0] ^= _mm512_loadu_epi32 (input + 0 * 64);
|
||
vout[1] ^= _mm512_loadu_epi32 (input + 1 * 64);
|
||
vout[2] ^= _mm512_loadu_epi32 (input + 2 * 64);
|
||
vout[3] ^= _mm512_loadu_epi32 (input + 3 * 64);
|
||
vout[4] ^= _mm512_loadu_epi32 (input + 4 * 64);
|
||
vout[5] ^= _mm512_loadu_epi32 (input + 5 * 64);
|
||
vout[6] ^= _mm512_loadu_epi32 (input + 6 * 64);
|
||
vout[7] ^= _mm512_loadu_epi32 (input + 7 * 64);
|
||
/* fall through */
|
||
default:
|
||
case ECB_DEC:
|
||
case ECB_ENC:
|
||
_mm512_storeu_epi32 (output + 0 * 64, vout[0]);
|
||
_mm512_storeu_epi32 (output + 1 * 64, vout[1]);
|
||
_mm512_storeu_epi32 (output + 2 * 64, vout[2]);
|
||
_mm512_storeu_epi32 (output + 3 * 64, vout[3]);
|
||
_mm512_storeu_epi32 (output + 4 * 64, vout[4]);
|
||
_mm512_storeu_epi32 (output + 5 * 64, vout[5]);
|
||
_mm512_storeu_epi32 (output + 6 * 64, vout[6]);
|
||
_mm512_storeu_epi32 (output + 7 * 64, vout[7]);
|
||
break;
|
||
|
||
case CBC_DEC:
|
||
{
|
||
__m128i viv;
|
||
vout[0] ^= _mm512_maskz_loadu_epi32(_cvtu32_mask16(0xfff0),
|
||
input - 1 * 64 + 48)
|
||
^ _mm512_maskz_loadu_epi32(_cvtu32_mask16(0x000f), iv);
|
||
vout[1] ^= _mm512_loadu_epi32(input + 0 * 64 + 48);
|
||
vout[2] ^= _mm512_loadu_epi32(input + 1 * 64 + 48);
|
||
vout[3] ^= _mm512_loadu_epi32(input + 2 * 64 + 48);
|
||
vout[4] ^= _mm512_loadu_epi32(input + 3 * 64 + 48);
|
||
vout[5] ^= _mm512_loadu_epi32(input + 4 * 64 + 48);
|
||
vout[6] ^= _mm512_loadu_epi32(input + 5 * 64 + 48);
|
||
vout[7] ^= _mm512_loadu_epi32(input + 6 * 64 + 48);
|
||
viv = _mm_loadu_si128((const void *)(input + 7 * 64 + 48));
|
||
_mm_storeu_si128((void *)iv, viv);
|
||
_mm512_storeu_epi32 (output + 0 * 64, vout[0]);
|
||
_mm512_storeu_epi32 (output + 1 * 64, vout[1]);
|
||
_mm512_storeu_epi32 (output + 2 * 64, vout[2]);
|
||
_mm512_storeu_epi32 (output + 3 * 64, vout[3]);
|
||
_mm512_storeu_epi32 (output + 4 * 64, vout[4]);
|
||
_mm512_storeu_epi32 (output + 5 * 64, vout[5]);
|
||
_mm512_storeu_epi32 (output + 6 * 64, vout[6]);
|
||
_mm512_storeu_epi32 (output + 7 * 64, vout[7]);
|
||
break;
|
||
}
|
||
|
||
case OCB_ENC:
|
||
vout[0] ^= _mm512_loadu_epi32 (output + 0 * 64);
|
||
vout[1] ^= _mm512_loadu_epi32 (output + 1 * 64);
|
||
vout[2] ^= _mm512_loadu_epi32 (output + 2 * 64);
|
||
vout[3] ^= _mm512_loadu_epi32 (output + 3 * 64);
|
||
vout[4] ^= _mm512_loadu_epi32 (output + 4 * 64);
|
||
vout[5] ^= _mm512_loadu_epi32 (output + 5 * 64);
|
||
vout[6] ^= _mm512_loadu_epi32 (output + 6 * 64);
|
||
vout[7] ^= _mm512_loadu_epi32 (output + 7 * 64);
|
||
_mm512_storeu_epi32 (output + 0 * 64, vout[0]);
|
||
_mm512_storeu_epi32 (output + 1 * 64, vout[1]);
|
||
_mm512_storeu_epi32 (output + 2 * 64, vout[2]);
|
||
_mm512_storeu_epi32 (output + 3 * 64, vout[3]);
|
||
_mm512_storeu_epi32 (output + 4 * 64, vout[4]);
|
||
_mm512_storeu_epi32 (output + 5 * 64, vout[5]);
|
||
_mm512_storeu_epi32 (output + 6 * 64, vout[6]);
|
||
_mm512_storeu_epi32 (output + 7 * 64, vout[7]);
|
||
break;
|
||
|
||
case OCB_DEC:
|
||
{
|
||
__m512i vchecksum = _mm512_setzero_epi32();
|
||
__m128i vchecksum128 = _mm_loadu_si128((const void *)checksum);
|
||
vout[0] ^= _mm512_loadu_epi32 (output + 0 * 64);
|
||
vout[1] ^= _mm512_loadu_epi32 (output + 1 * 64);
|
||
vout[2] ^= _mm512_loadu_epi32 (output + 2 * 64);
|
||
vout[3] ^= _mm512_loadu_epi32 (output + 3 * 64);
|
||
vout[4] ^= _mm512_loadu_epi32 (output + 4 * 64);
|
||
vout[5] ^= _mm512_loadu_epi32 (output + 5 * 64);
|
||
vout[6] ^= _mm512_loadu_epi32 (output + 6 * 64);
|
||
vout[7] ^= _mm512_loadu_epi32 (output + 7 * 64);
|
||
vchecksum ^= vout[0];
|
||
vchecksum ^= vout[1];
|
||
vchecksum ^= vout[2];
|
||
vchecksum ^= vout[3];
|
||
vchecksum ^= vout[4];
|
||
vchecksum ^= vout[5];
|
||
vchecksum ^= vout[6];
|
||
vchecksum ^= vout[7];
|
||
_mm512_storeu_epi32 (output + 0 * 64, vout[0]);
|
||
_mm512_storeu_epi32 (output + 1 * 64, vout[1]);
|
||
_mm512_storeu_epi32 (output + 2 * 64, vout[2]);
|
||
_mm512_storeu_epi32 (output + 3 * 64, vout[3]);
|
||
_mm512_storeu_epi32 (output + 4 * 64, vout[4]);
|
||
_mm512_storeu_epi32 (output + 5 * 64, vout[5]);
|
||
_mm512_storeu_epi32 (output + 6 * 64, vout[6]);
|
||
_mm512_storeu_epi32 (output + 7 * 64, vout[7]);
|
||
vchecksum128 ^= _mm512_extracti32x4_epi32(vchecksum, 0)
|
||
^ _mm512_extracti32x4_epi32(vchecksum, 1)
|
||
^ _mm512_extracti32x4_epi32(vchecksum, 2)
|
||
^ _mm512_extracti32x4_epi32(vchecksum, 3);
|
||
_mm_storeu_si128((void *)checksum, vchecksum128);
|
||
break;
|
||
}
|
||
}
|
||
|
||
_mm256_zeroall();
|
||
#ifdef __x86_64__
|
||
asm volatile (
|
||
#define CLEAR(mm) "vpxord %%" #mm ", %%" #mm ", %%" #mm ";\n\t"
|
||
CLEAR(ymm16) CLEAR(ymm17) CLEAR(ymm18) CLEAR(ymm19)
|
||
CLEAR(ymm20) CLEAR(ymm21) CLEAR(ymm22) CLEAR(ymm23)
|
||
CLEAR(ymm24) CLEAR(ymm25) CLEAR(ymm26) CLEAR(ymm27)
|
||
CLEAR(ymm28) CLEAR(ymm29) CLEAR(ymm30) CLEAR(ymm31)
|
||
#undef CLEAR
|
||
:
|
||
: "m"(*input), "m"(*output)
|
||
: "xmm16", "xmm17", "xmm18", "xmm19",
|
||
"xmm20", "xmm21", "xmm22", "xmm23",
|
||
"xmm24", "xmm25", "xmm26", "xmm27",
|
||
"xmm28", "xmm29", "xmm30", "xmm31",
|
||
"memory", "cc");
|
||
#endif
|
||
}
|
||
|
||
void
|
||
_gcry_serpent_avx512_blk32(const void *ctx, unsigned char *out,
|
||
const unsigned char *in, int encrypt)
|
||
{
|
||
serpent_avx512_blk32 (ctx, out, in, encrypt ? ECB_ENC : ECB_DEC,
|
||
NULL, NULL, NULL);
|
||
}
|
||
|
||
void
|
||
_gcry_serpent_avx512_cbc_dec(const void *ctx, unsigned char *out,
|
||
const unsigned char *in, unsigned char *iv)
|
||
{
|
||
serpent_avx512_blk32 (ctx, out, in, CBC_DEC, iv, NULL, NULL);
|
||
}
|
||
|
||
void
|
||
_gcry_serpent_avx512_cfb_dec(const void *ctx, unsigned char *out,
|
||
const unsigned char *in, unsigned char *iv)
|
||
{
|
||
serpent_avx512_blk32 (ctx, out, in, CFB_DEC, iv, NULL, NULL);
|
||
}
|
||
|
||
void
|
||
_gcry_serpent_avx512_ctr_enc(const void *ctx, unsigned char *out,
|
||
const unsigned char *in, unsigned char *iv)
|
||
{
|
||
serpent_avx512_blk32 (ctx, out, in, CTR_ENC, iv, NULL, NULL);
|
||
}
|
||
|
||
void
|
||
_gcry_serpent_avx512_ocb_crypt(const void *ctx, unsigned char *out,
|
||
const unsigned char *in, unsigned char *offset,
|
||
unsigned char *checksum,
|
||
const ocb_L_uintptr_t Ls[32], int encrypt)
|
||
{
|
||
serpent_avx512_blk32 (ctx, out, in, encrypt ? OCB_ENC : OCB_DEC, offset,
|
||
checksum, Ls);
|
||
}
|
||
|
||
#endif /*defined(USE_SERPENT) && defined(ENABLE_AVX512_SUPPORT)*/
|
||
#endif /*__x86_64 || __i386*/
|