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209 lines
7.5 KiB
C
209 lines
7.5 KiB
C
/* ====================================================================
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* Copyright (c) 2014 - 2019 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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#include <openssl/sms4.h>
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#include "internal/rotate.h"
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#include "modes_lcl.h"
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#include "sms4_lcl.h"
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#ifdef SMS4_AVX2
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# include <immintrin.h>
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# define GET_BLKS(x0, x1, x2, x3, in) \
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t0 = _mm256_i32gather_epi32((int *)(in+4*0), vindex_4i, 4); \
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t1 = _mm256_i32gather_epi32((int *)(in+4*1), vindex_4i, 4); \
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t2 = _mm256_i32gather_epi32((int *)(in+4*2), vindex_4i, 4); \
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t3 = _mm256_i32gather_epi32((int *)(in+4*3), vindex_4i, 4); \
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x0 = _mm256_shuffle_epi8(t0, vindex_swap); \
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x1 = _mm256_shuffle_epi8(t1, vindex_swap); \
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x2 = _mm256_shuffle_epi8(t2, vindex_swap); \
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x3 = _mm256_shuffle_epi8(t3, vindex_swap)
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# define PUT_BLKS(out, x0, x1, x2, x3) \
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t0 = _mm256_shuffle_epi8(x0, vindex_swap); \
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t1 = _mm256_shuffle_epi8(x1, vindex_swap); \
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t2 = _mm256_shuffle_epi8(x2, vindex_swap); \
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t3 = _mm256_shuffle_epi8(x3, vindex_swap); \
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_mm256_storeu_si256((__m256i *)(out+32*0), t0); \
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_mm256_storeu_si256((__m256i *)(out+32*1), t1); \
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_mm256_storeu_si256((__m256i *)(out+32*2), t2); \
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_mm256_storeu_si256((__m256i *)(out+32*3), t3); \
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x0 = _mm256_i32gather_epi32((int *)(out+8*0), vindex_read, 4); \
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x1 = _mm256_i32gather_epi32((int *)(out+8*1), vindex_read, 4); \
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x2 = _mm256_i32gather_epi32((int *)(out+8*2), vindex_read, 4); \
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x3 = _mm256_i32gather_epi32((int *)(out+8*3), vindex_read, 4); \
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_mm256_storeu_si256((__m256i *)(out+32*0), x0); \
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_mm256_storeu_si256((__m256i *)(out+32*1), x1); \
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_mm256_storeu_si256((__m256i *)(out+32*2), x2); \
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_mm256_storeu_si256((__m256i *)(out+32*3), x3)
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# define _mm256_rotl_epi32(a, i) _mm256_xor_si256( \
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_mm256_slli_epi32(a, i), _mm256_srli_epi32(a, 32 - i))
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# define INDEX_MASK_TBOX 0xff
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# define ROUND_TBOX(x0, x1, x2, x3, x4, i) \
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t0 = _mm256_set1_epi32(*(rk + i)); \
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t1 = _mm256_xor_si256(x1, x2); \
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t2 = _mm256_xor_si256(x3, t0); \
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x4 = _mm256_xor_si256(t1, t2); \
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t0 = _mm256_and_si256(x4, vindex_mask); \
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t0 = _mm256_i32gather_epi32((int *)SMS4_T, t0, 4); \
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t0 = _mm256_rotl_epi32(t0, 8); \
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x4 = _mm256_srli_epi32(x4, 8); \
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x0 = _mm256_xor_si256(x0, t0); \
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t0 = _mm256_and_si256(x4, vindex_mask); \
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t0 = _mm256_i32gather_epi32((int *)SMS4_T, t0, 4); \
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t0 = _mm256_rotl_epi32(t0, 16); \
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x4 = _mm256_srli_epi32(x4, 8); \
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x0 = _mm256_xor_si256(x0, t0); \
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t0 = _mm256_and_si256(x4, vindex_mask); \
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t0 = _mm256_i32gather_epi32((int *)SMS4_T, t0, 4); \
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t0 = _mm256_rotl_epi32(t0, 24); \
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x4 = _mm256_srli_epi32(x4, 8); \
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x0 = _mm256_xor_si256(x0, t0); \
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t1 = _mm256_i32gather_epi32((int *)SMS4_T, x4, 4); \
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x4 = _mm256_xor_si256(x0, t1)
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# define INDEX_MASK_DBOX 0xffff
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# define ROUND_DBOX(x0, x1, x2, x3, x4, i) \
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t0 = _mm256_set1_epi32(*(rk + i)); \
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t1 = _mm256_xor_si256(x1, x2); \
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t2 = _mm256_xor_si256(x3, t0); \
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x4 = _mm256_xor_si256(t1, t2); \
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t0 = _mm256_srli_epi32(x4, 16); \
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t1 = _mm256_i32gather_epi32((int *)SMS4_D, t0, 4); \
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t2 = _mm256_and_si256(x4, vindex_mask); \
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t3 = _mm256_i32gather_epi32((int *)SMS4_D, t2, 4); \
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t0 = _mm256_rotl_epi32(t3, 16); \
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x4 = _mm256_xor_si256(x0, t1); \
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x4 = _mm256_xor_si256(x4, t0)
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# define ROUND ROUND_TBOX
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# define INDEX_MASK INDEX_MASK_TBOX
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void sms4_avx2_ecb_encrypt_blocks(const unsigned char *in, unsigned char *out,
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size_t blocks, const sms4_key_t *key)
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{
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const int *rk = (int *)key->rk;
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__m256i x0, x1, x2, x3, x4;
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__m256i t0, t1, t2, t3;
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__m256i vindex_4i = _mm256_setr_epi32(0,4,8,12,16,20,24,28);
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__m256i vindex_mask = _mm256_set1_epi32(INDEX_MASK);
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__m256i vindex_read = _mm256_setr_epi32(0,8,16,24,1,9,17,25);
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__m256i vindex_swap = _mm256_setr_epi8(
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3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12,
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3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12
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);
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while (blocks >= 8) {
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GET_BLKS(x0, x1, x2, x3, in);
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ROUNDS(x0, x1, x2, x3, x4);
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PUT_BLKS(out, x0, x4, x3, x2);
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in += 128;
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out += 128;
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blocks -= 8;
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}
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while (blocks--) {
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sms4_encrypt(in, out, key);
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in += 16;
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out += 16;
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}
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}
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void sms4_avx2_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
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size_t blocks, const sms4_key_t *key, const unsigned char iv[16])
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{
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const int *rk = (int *)key->rk;
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__m256i x0, x1, x2, x3, x4;
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__m256i t0, t1, t2, t3;
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__m256i vindex_4i = _mm256_setr_epi32(0,4,8,12,16,20,24,28);
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__m256i vindex_mask = _mm256_set1_epi32(INDEX_MASK);
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__m256i vindex_read = _mm256_setr_epi32(0,8,16,24,1,9,17,25);
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__m256i vindex_swap = _mm256_setr_epi8(
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3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12,
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3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12
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);
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__m256i incr = _mm256_setr_epi32(0, 1, 2, 3, 4, 5, 6, 7);
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int c0 = (int)GETU32(iv );
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int c1 = (int)GETU32(iv + 4);
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int c2 = (int)GETU32(iv + 8);
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int c3 = (int)GETU32(iv + 12);
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while (blocks >= 8) {
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x0 = _mm256_set1_epi32(c0);
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x1 = _mm256_set1_epi32(c1);
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x2 = _mm256_set1_epi32(c2);
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x3 = _mm256_set1_epi32(c3);
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x3 = _mm256_add_epi32(x3, incr);
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ROUNDS(x0, x1, x2, x3, x4);
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GET_BLKS(t0, t1, t2, t3, in);
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x0 = _mm256_xor_si256(x0, t0);
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x4 = _mm256_xor_si256(x4, t1);
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x3 = _mm256_xor_si256(x3, t2);
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x2 = _mm256_xor_si256(x2, t3);
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PUT_BLKS(out, x0, x4, x3, x2);
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c3 += 8;
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in += 128;
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out += 128;
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blocks -= 8;
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}
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if (blocks) {
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unsigned char ctr[16];
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memcpy(ctr, iv, 12);
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PUTU32(ctr + 12, c3);
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sms4_ctr32_encrypt_blocks(in, out, blocks, key, ctr);
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}
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}
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#endif
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