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https://github.com/guanzhi/GmSSL.git
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159 lines
5.2 KiB
C
159 lines
5.2 KiB
C
/* ====================================================================
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* Copyright (c) 2014 - 2016 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 <zmmintrin.h>
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#include <openssl/sms4.h>
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#include "sms4_lcl.h"
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static __m512i mask_ff00;
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static __m512i mask_ffff;
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static __m512i mask_ff0000;
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static __m512i vindex_0s;
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static __m512i vindex_4i;
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void sms4_knc_encrypt_init(sms4_key_t *key)
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{
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uint64_t value[sizeof(__m512i)/sizeof(uint64_t)];
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int *p = (int *)value;
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for (i = 0; i < 16; i++)
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p[i] = 0xff00;
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mask_ff00 = _mm512_load_epi32(value);
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for (i = 0; i < 16; i++)
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p[i] = 0xffff;
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mask_ffff = _mm512_load_epi32(value);
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for (i = 0; i < 16; i++)
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p[i] = 0xff0000;
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mask_ff0000 = _mm512_load_epi32(value);
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for (i = 0; i < 16; i++)
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p[i] = 0;
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vindex_0s = _mm512_load_epi32(value);
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for (i = 0; i < 16; i++)
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p[i] = 4 * i;
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vindex_4i = _mm512_load_epi32(value);
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sms4_init_sbox32();
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}
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#define SWAP32(x) \
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t0 = _mm512_slli_epi32(x, 24); \
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t1 = _mm512_srli_epi32(x, 24); \
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t2 = _mm512_or_epi32(t0, t1); \
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t0 = _mm512_slli_epi32(x, 8); \
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t1 = _mm512_and_epi32(t0, mask_ff0000); \
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t0 = _mm512_or_epi32(t2, t1); \
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t1 = _mm512_srli_epi32(x, 8); \
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t2 = _mm512_and_epi32(t1, mask_ff00); \
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x = _mm512_or_epi32(t0, t2)
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#define GET_BLKS(x0, x1, x2, x3, in) \
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x0 = _mm512_i32gather_epi32(vindex_4i, in+4*0, 4); \
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x1 = _mm512_i32gather_epi32(vindex_4i, in+4*1, 4); \
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x2 = _mm512_i32gather_epi32(vindex_4i, in+4*2, 4); \
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x3 = _mm512_i32gather_epi32(vindex_4i, in+4*3, 4); \
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SWAP32(x0); SWAP32(x1); SWAP32(x2); SWAP32(x3)
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#define PUT_BLKS(out, x0, x1, x2, x3) \
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SWAP32(x0); SWAP32(x1); SWAP32(x2); SWAP32(x3); \
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_mm512_i32scatter_epi32(out+4*0, vindex_4i, x0, 4); \
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_mm512_i32scatter_epi32(out+4*1, vindex_4i, x1, 4); \
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_mm512_i32scatter_epi32(out+4*2, vindex_4i, x2, 4); \
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_mm512_i32scatter_epi32(out+4*3, vindex_4i, x3, 4)
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#define S(x0, t0, t1, t2) \
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t0 = _mm512_and_epi32(x0, mask_ffff); \
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t1 = _mm512_i32gather_epi32(t0, SBOX32L, 4); \
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t0 = _mm512_srli_epi32(x0, 16); \
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t2 = _mm512_i32gather_epi32(t0, SBOX32H, 4); \
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x0 = _mm512_xor_epi32(t1, t2)
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#define ROT(r0, x0, i, t0, t1) \
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t0 = _mm512_slli_epi32(x0, i); \
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t1 = _mm512_srli_epi32(x0, 32-i); \
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r0 = _mm512_xor_epi32(t0, t1)
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#define L(x0, t0, t1, t2, t3, t4) \
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ROT(t0, x0, 2, t2, t3); \
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ROT(t1, x0, 10, t2, t3); \
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t4 = _mm512_xor_epi32(t0, t1); \
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ROT(t0, x0, 18, t2, t3); \
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ROT(t1, x0, 24, t2, t3); \
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t3 = _mm512_xor_epi32(t0, t1); \
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t2 = _mm512_xor_epi32(x0, t3); \
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x0 = _mm512_xor_epi32(t2, t4)
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#define ROUND(x0, x1, x2, x3, x4, i) \
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t0 = _mm512_i32gather_epi32(vindex_0s, rk+i*4, 4); \
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t1 = _mm512_xor_epi32(x1, x2); \
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t2 = _mm512_xor_epi32(x3, t0); \
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t0 = _mm512_xor_epi32(t1, t2); \
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S(t0, x4, t1, t2); \
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L(t0, x4, t1, t2, t3, t4); \
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x4 = _mm512_xor_epi32(x0, t0)
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void sms4_knc_encrypt_16blocks(sms4_key_t *key, const unsigned char *in, unsigned char *out)
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{
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int *rk = (int *)key->rk;
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__m512i x0, x1, x2, x3, x4;
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__m512i t0, t1, t2, t3, t4;
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GET_BLKS(x0, x1, x2, x3, in);
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ROUNDS(x0, x1, x2, x3, x4, ROUND);
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PUT_BLKS(out, x2, x3, x4, x0);
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}
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