1025 lines
36 KiB
C
1025 lines
36 KiB
C
/* chacha.c
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*
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* Copyright (C) 2006-2017 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*
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* based from
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* chacha-ref.c version 20080118
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* D. J. Bernstein
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* Public domain.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <wolfssl/wolfcrypt/settings.h>
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#ifdef HAVE_CHACHA
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#include <wolfssl/wolfcrypt/chacha.h>
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#include <wolfssl/wolfcrypt/error-crypt.h>
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#include <wolfssl/wolfcrypt/logging.h>
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#include <wolfssl/wolfcrypt/cpuid.h>
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#ifdef NO_INLINE
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#include <wolfssl/wolfcrypt/misc.h>
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#else
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#define WOLFSSL_MISC_INCLUDED
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#include <wolfcrypt/src/misc.c>
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#endif
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#ifdef CHACHA_AEAD_TEST
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#include <stdio.h>
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#endif
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#ifdef WOLFSSL_X86_64_BUILD
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#if defined(USE_INTEL_SPEEDUP) && !defined(NO_CHACHA_ASM)
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#define USE_INTEL_CHACHA_SPEEDUP
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#endif
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#endif
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#ifdef USE_INTEL_CHACHA_SPEEDUP
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#include <emmintrin.h>
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#include <immintrin.h>
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#if defined(__GNUC__) && ((__GNUC__ < 4) || \
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(__GNUC__ == 4 && __GNUC_MINOR__ <= 8))
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#define NO_AVX2_SUPPORT
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#endif
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#if defined(__clang__) && ((__clang_major__ < 3) || \
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(__clang_major__ == 3 && __clang_minor__ <= 5))
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#define NO_AVX2_SUPPORT
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#elif defined(__clang__) && defined(NO_AVX2_SUPPORT)
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#undef NO_AVX2_SUPPORT
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#endif
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#define HAVE_INTEL_AVX1
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#ifndef NO_AVX2_SUPPORT
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#define HAVE_INTEL_AVX2
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#endif
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#endif
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#ifdef BIG_ENDIAN_ORDER
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#define LITTLE32(x) ByteReverseWord32(x)
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#else
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#define LITTLE32(x) (x)
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#endif
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/* Number of rounds */
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#define ROUNDS 20
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#define U32C(v) (v##U)
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#define U32V(v) ((word32)(v) & U32C(0xFFFFFFFF))
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#define U8TO32_LITTLE(p) LITTLE32(((word32*)(p))[0])
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#define ROTATE(v,c) rotlFixed(v, c)
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#define XOR(v,w) ((v) ^ (w))
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#define PLUS(v,w) (U32V((v) + (w)))
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#define PLUSONE(v) (PLUS((v),1))
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#define QUARTERROUND(a,b,c,d) \
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x[a] = PLUS(x[a],x[b]); x[d] = ROTATE(XOR(x[d],x[a]),16); \
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x[c] = PLUS(x[c],x[d]); x[b] = ROTATE(XOR(x[b],x[c]),12); \
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x[a] = PLUS(x[a],x[b]); x[d] = ROTATE(XOR(x[d],x[a]), 8); \
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x[c] = PLUS(x[c],x[d]); x[b] = ROTATE(XOR(x[b],x[c]), 7);
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#define QUARTERROUND_INTEL_ASM(a0,b0,c0,d0, \
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a1,b1,c1,d1, \
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a2,b2,c2,d2, \
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a3,b3,c3,d3, \
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t1,o1) \
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"vpaddd "#b0", "#a0", "#a0"\n\t" \
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"vpxor "#a0", "#d0", "#d0"\n\t" \
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"vmovdqa "#o1"(%[x]), "#c3"\n\t" \
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"vpshufb %[rotl16], "#d0", "#d0"\n\t" \
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"vpaddd "#d0", "#c0", "#c0"\n\t" \
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"vpxor "#c0", "#b0", "#b0"\n\t" \
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"vpaddd "#b1", "#a1", "#a1"\n\t" \
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"vpxor "#a1", "#d1", "#d1"\n\t" \
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"vpshufb %[rotl16], "#d1", "#d1"\n\t" \
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"vpaddd "#d1", "#c1", "#c1"\n\t" \
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"vpxor "#c1", "#b1", "#b1"\n\t" \
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"vpaddd "#b2", "#a2", "#a2"\n\t" \
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"vpxor "#a2", "#d2", "#d2"\n\t" \
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"vpshufb %[rotl16], "#d2", "#d2"\n\t" \
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"vpaddd "#d2", "#c2", "#c2"\n\t" \
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"vpxor "#c2", "#b2", "#b2"\n\t" \
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"vpaddd "#b3", "#a3", "#a3"\n\t" \
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"vpxor "#a3", "#d3", "#d3"\n\t" \
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"vpshufb %[rotl16], "#d3", "#d3"\n\t" \
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"vpaddd "#d3", "#c3", "#c3"\n\t" \
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"vpxor "#c3", "#b3", "#b3"\n\t" \
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"vmovdqa "#c3", "#o1"(%[x])\n\t" \
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"vpsrld $20, "#b0", "#t1"\n\t" \
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"vpslld $12, "#b0", "#b0"\n\t" \
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"vpxor "#t1", "#b0", "#b0"\n\t" \
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"vpsrld $20, "#b1", "#t1"\n\t" \
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"vpslld $12, "#b1", "#b1"\n\t" \
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"vpxor "#t1", "#b1", "#b1"\n\t" \
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"vpsrld $20, "#b2", "#t1"\n\t" \
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"vpslld $12, "#b2", "#b2"\n\t" \
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"vpxor "#t1", "#b2", "#b2"\n\t" \
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"vpsrld $20, "#b3", "#t1"\n\t" \
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"vpslld $12, "#b3", "#b3"\n\t" \
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"vpxor "#t1", "#b3", "#b3"\n\t" \
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"vpaddd "#b0", "#a0", "#a0"\n\t" \
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"vpxor "#a0", "#d0", "#d0"\n\t" \
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"vmovdqa "#o1"(%[x]), "#c3"\n\t" \
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"vpshufb %[rotl8], "#d0", "#d0"\n\t" \
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"vpaddd "#d0", "#c0", "#c0"\n\t" \
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"vpxor "#c0", "#b0", "#b0"\n\t" \
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"vpaddd "#b1", "#a1", "#a1"\n\t" \
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"vpxor "#a1", "#d1", "#d1"\n\t" \
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"vpshufb %[rotl8], "#d1", "#d1"\n\t" \
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"vpaddd "#d1", "#c1", "#c1"\n\t" \
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"vpxor "#c1", "#b1", "#b1"\n\t" \
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"vpaddd "#b2", "#a2", "#a2"\n\t" \
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"vpxor "#a2", "#d2", "#d2"\n\t" \
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"vpshufb %[rotl8], "#d2", "#d2"\n\t" \
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"vpaddd "#d2", "#c2", "#c2"\n\t" \
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"vpxor "#c2", "#b2", "#b2"\n\t" \
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"vpaddd "#b3", "#a3", "#a3"\n\t" \
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"vpxor "#a3", "#d3", "#d3"\n\t" \
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"vpshufb %[rotl8], "#d3", "#d3"\n\t" \
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"vpaddd "#d3", "#c3", "#c3"\n\t" \
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"vpxor "#c3", "#b3", "#b3"\n\t" \
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"vmovdqa "#c3", "#o1"(%[x])\n\t" \
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"vpsrld $25, "#b0", "#t1"\n\t" \
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"vpslld $7, "#b0", "#b0"\n\t" \
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"vpxor "#t1", "#b0", "#b0"\n\t" \
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"vpsrld $25, "#b1", "#t1"\n\t" \
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"vpslld $7, "#b1", "#b1"\n\t" \
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"vpxor "#t1", "#b1", "#b1"\n\t" \
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"vpsrld $25, "#b2", "#t1"\n\t" \
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"vpslld $7, "#b2", "#b2"\n\t" \
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"vpxor "#t1", "#b2", "#b2"\n\t" \
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"vpsrld $25, "#b3", "#t1"\n\t" \
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"vpslld $7, "#b3", "#b3"\n\t" \
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"vpxor "#t1", "#b3", "#b3"\n\t"
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#define QUARTERROUND_INTEL_ASM_2(a0,b0,c0,d0, \
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a1,b1,c1,d1, \
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a2,b2,c2,d2, \
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a3,b3,c3,d3, \
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t1,o1) \
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"vpaddd "#b0", "#a0", "#a0"\n\t" \
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"vpxor "#a0", "#d0", "#d0"\n\t" \
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"vmovdqa "#o1"(%[x]), "#c1"\n\t" \
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"vpshufb %[rotl16], "#d0", "#d0"\n\t" \
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"vpaddd "#d0", "#c0", "#c0"\n\t" \
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"vpxor "#c0", "#b0", "#b0"\n\t" \
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"vpaddd "#b1", "#a1", "#a1"\n\t" \
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"vpxor "#a1", "#d1", "#d1"\n\t" \
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"vpshufb %[rotl16], "#d1", "#d1"\n\t" \
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"vpaddd "#d1", "#c1", "#c1"\n\t" \
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"vpxor "#c1", "#b1", "#b1"\n\t" \
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"vpaddd "#b2", "#a2", "#a2"\n\t" \
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"vpxor "#a2", "#d2", "#d2"\n\t" \
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"vpshufb %[rotl16], "#d2", "#d2"\n\t" \
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"vpaddd "#d2", "#c2", "#c2"\n\t" \
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"vpxor "#c2", "#b2", "#b2"\n\t" \
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"vpaddd "#b3", "#a3", "#a3"\n\t" \
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"vpxor "#a3", "#d3", "#d3"\n\t" \
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"vpshufb %[rotl16], "#d3", "#d3"\n\t" \
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"vpaddd "#d3", "#c3", "#c3"\n\t" \
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"vpxor "#c3", "#b3", "#b3"\n\t" \
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"vmovdqa "#c1", "#o1"(%[x])\n\t" \
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"vpsrld $20, "#b0", "#t1"\n\t" \
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"vpslld $12, "#b0", "#b0"\n\t" \
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"vpxor "#t1", "#b0", "#b0"\n\t" \
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"vpsrld $20, "#b1", "#t1"\n\t" \
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"vpslld $12, "#b1", "#b1"\n\t" \
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"vpxor "#t1", "#b1", "#b1"\n\t" \
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"vpsrld $20, "#b2", "#t1"\n\t" \
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"vpslld $12, "#b2", "#b2"\n\t" \
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"vpxor "#t1", "#b2", "#b2"\n\t" \
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"vpsrld $20, "#b3", "#t1"\n\t" \
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"vpslld $12, "#b3", "#b3"\n\t" \
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"vpxor "#t1", "#b3", "#b3"\n\t" \
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"vpaddd "#b0", "#a0", "#a0"\n\t" \
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"vpxor "#a0", "#d0", "#d0"\n\t" \
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"vmovdqa "#o1"(%[x]), "#c1"\n\t" \
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"vpshufb %[rotl8], "#d0", "#d0"\n\t" \
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"vpaddd "#d0", "#c0", "#c0"\n\t" \
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"vpxor "#c0", "#b0", "#b0"\n\t" \
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"vpaddd "#b1", "#a1", "#a1"\n\t" \
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"vpxor "#a1", "#d1", "#d1"\n\t" \
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"vpshufb %[rotl8], "#d1", "#d1"\n\t" \
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"vpaddd "#d1", "#c1", "#c1"\n\t" \
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"vpxor "#c1", "#b1", "#b1"\n\t" \
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"vpaddd "#b2", "#a2", "#a2"\n\t" \
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"vpxor "#a2", "#d2", "#d2"\n\t" \
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"vpshufb %[rotl8], "#d2", "#d2"\n\t" \
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"vpaddd "#d2", "#c2", "#c2"\n\t" \
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"vpxor "#c2", "#b2", "#b2"\n\t" \
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"vpaddd "#b3", "#a3", "#a3"\n\t" \
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"vpxor "#a3", "#d3", "#d3"\n\t" \
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"vpshufb %[rotl8], "#d3", "#d3"\n\t" \
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"vpaddd "#d3", "#c3", "#c3"\n\t" \
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"vpxor "#c3", "#b3", "#b3"\n\t" \
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"vmovdqa "#c1", "#o1"(%[x])\n\t" \
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"vpsrld $25, "#b0", "#t1"\n\t" \
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"vpslld $7, "#b0", "#b0"\n\t" \
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"vpxor "#t1", "#b0", "#b0"\n\t" \
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"vpsrld $25, "#b1", "#t1"\n\t" \
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"vpslld $7, "#b1", "#b1"\n\t" \
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"vpxor "#t1", "#b1", "#b1"\n\t" \
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"vpsrld $25, "#b2", "#t1"\n\t" \
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"vpslld $7, "#b2", "#b2"\n\t" \
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"vpxor "#t1", "#b2", "#b2"\n\t" \
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"vpsrld $25, "#b3", "#t1"\n\t" \
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"vpslld $7, "#b3", "#b3"\n\t" \
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"vpxor "#t1", "#b3", "#b3"\n\t"
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#define QUARTERROUND_XMM() \
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QUARTERROUND_INTEL_ASM(%%xmm0,%%xmm4,%%xmm8,%%xmm12, \
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%%xmm1,%%xmm5,%%xmm9,%%xmm13, \
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%%xmm2,%%xmm6,%%xmm10,%%xmm14, \
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%%xmm3,%%xmm7,%%xmm11,%%xmm15, \
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%%xmm11,48)
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#define QUARTERROUND_XMM_2() \
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QUARTERROUND_INTEL_ASM_2(%%xmm0,%%xmm5,%%xmm10,%%xmm15, \
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%%xmm1,%%xmm6,%%xmm11,%%xmm12, \
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%%xmm2,%%xmm7,%%xmm8,%%xmm13, \
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%%xmm3,%%xmm4,%%xmm9,%%xmm14, \
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%%xmm11,48)
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#define QUARTERROUND_YMM() \
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QUARTERROUND_INTEL_ASM(%%ymm0,%%ymm4,%%ymm8,%%ymm12, \
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%%ymm1,%%ymm5,%%ymm9,%%ymm13, \
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%%ymm2,%%ymm6,%%ymm10,%%ymm14, \
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%%ymm3,%%ymm7,%%ymm11,%%ymm15, \
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%%ymm11,96)
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#define QUARTERROUND_YMM_2() \
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QUARTERROUND_INTEL_ASM_2(%%ymm0,%%ymm5,%%ymm10,%%ymm15, \
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%%ymm1,%%ymm6,%%ymm11,%%ymm12, \
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%%ymm2,%%ymm7,%%ymm8,%%ymm13, \
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%%ymm3,%%ymm4,%%ymm9,%%ymm14, \
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%%ymm11,96)
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/**
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* Set up iv(nonce). Earlier versions used 64 bits instead of 96, this version
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* uses the typical AEAD 96 bit nonce and can do record sizes of 256 GB.
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*/
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int wc_Chacha_SetIV(ChaCha* ctx, const byte* inIv, word32 counter)
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{
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word32 temp[CHACHA_IV_WORDS];/* used for alignment of memory */
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#ifdef CHACHA_AEAD_TEST
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word32 i;
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printf("NONCE : ");
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for (i = 0; i < CHACHA_IV_BYTES; i++) {
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printf("%02x", inIv[i]);
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}
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printf("\n\n");
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#endif
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if (ctx == NULL)
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return BAD_FUNC_ARG;
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XMEMCPY(temp, inIv, CHACHA_IV_BYTES);
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ctx->X[CHACHA_IV_BYTES+0] = counter; /* block counter */
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ctx->X[CHACHA_IV_BYTES+1] = LITTLE32(temp[0]); /* fixed variable from nonce */
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ctx->X[CHACHA_IV_BYTES+2] = LITTLE32(temp[1]); /* counter from nonce */
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ctx->X[CHACHA_IV_BYTES+3] = LITTLE32(temp[2]); /* counter from nonce */
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return 0;
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}
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/* "expand 32-byte k" as unsigned 32 byte */
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static const word32 sigma[4] = {0x61707865, 0x3320646e, 0x79622d32, 0x6b206574};
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/* "expand 16-byte k" as unsigned 16 byte */
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static const word32 tau[4] = {0x61707865, 0x3120646e, 0x79622d36, 0x6b206574};
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/**
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* Key setup. 8 word iv (nonce)
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*/
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int wc_Chacha_SetKey(ChaCha* ctx, const byte* key, word32 keySz)
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{
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const word32* constants;
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const byte* k;
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#ifdef XSTREAM_ALIGN
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word32 alignKey[8];
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#endif
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if (ctx == NULL)
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return BAD_FUNC_ARG;
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if (keySz != 16 && keySz != 32)
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return BAD_FUNC_ARG;
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#ifdef XSTREAM_ALIGN
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if ((wolfssl_word)key % 4) {
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WOLFSSL_MSG("wc_ChachaSetKey unaligned key");
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XMEMCPY(alignKey, key, keySz);
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k = (byte*)alignKey;
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}
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else {
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k = key;
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}
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#else
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k = key;
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#endif /* XSTREAM_ALIGN */
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#ifdef CHACHA_AEAD_TEST
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word32 i;
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printf("ChaCha key used :\n");
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for (i = 0; i < keySz; i++) {
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printf("%02x", key[i]);
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if ((i + 1) % 8 == 0)
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printf("\n");
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}
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printf("\n\n");
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#endif
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ctx->X[4] = U8TO32_LITTLE(k + 0);
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ctx->X[5] = U8TO32_LITTLE(k + 4);
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ctx->X[6] = U8TO32_LITTLE(k + 8);
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ctx->X[7] = U8TO32_LITTLE(k + 12);
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if (keySz == 32) {
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k += 16;
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constants = sigma;
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}
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else {
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constants = tau;
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}
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ctx->X[ 8] = U8TO32_LITTLE(k + 0);
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ctx->X[ 9] = U8TO32_LITTLE(k + 4);
|
|
ctx->X[10] = U8TO32_LITTLE(k + 8);
|
|
ctx->X[11] = U8TO32_LITTLE(k + 12);
|
|
ctx->X[ 0] = constants[0];
|
|
ctx->X[ 1] = constants[1];
|
|
ctx->X[ 2] = constants[2];
|
|
ctx->X[ 3] = constants[3];
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Converts word into bytes with rotations having been done.
|
|
*/
|
|
static INLINE void wc_Chacha_wordtobyte(word32 output[CHACHA_CHUNK_WORDS],
|
|
const word32 input[CHACHA_CHUNK_WORDS])
|
|
{
|
|
word32 x[CHACHA_CHUNK_WORDS];
|
|
word32 i;
|
|
|
|
for (i = 0; i < CHACHA_CHUNK_WORDS; i++) {
|
|
x[i] = input[i];
|
|
}
|
|
|
|
for (i = (ROUNDS); i > 0; i -= 2) {
|
|
QUARTERROUND(0, 4, 8, 12)
|
|
QUARTERROUND(1, 5, 9, 13)
|
|
QUARTERROUND(2, 6, 10, 14)
|
|
QUARTERROUND(3, 7, 11, 15)
|
|
QUARTERROUND(0, 5, 10, 15)
|
|
QUARTERROUND(1, 6, 11, 12)
|
|
QUARTERROUND(2, 7, 8, 13)
|
|
QUARTERROUND(3, 4, 9, 14)
|
|
}
|
|
|
|
for (i = 0; i < CHACHA_CHUNK_WORDS; i++) {
|
|
x[i] = PLUS(x[i], input[i]);
|
|
}
|
|
|
|
for (i = 0; i < CHACHA_CHUNK_WORDS; i++) {
|
|
output[i] = LITTLE32(x[i]);
|
|
}
|
|
}
|
|
|
|
|
|
#ifdef USE_INTEL_CHACHA_SPEEDUP
|
|
|
|
#ifdef HAVE_INTEL_AVX1
|
|
static void chacha_encrypt_avx(ChaCha* ctx, const byte* m, byte* c,
|
|
word32 bytes)
|
|
{
|
|
ALIGN128 word32 X[4*CHACHA_CHUNK_WORDS]; /* used to make sure aligned */
|
|
ALIGN128 word32 x[2*CHACHA_CHUNK_WORDS]; /* used to make sure aligned */
|
|
byte* output;
|
|
word32 i;
|
|
word32 cnt = 0;
|
|
static const __m128i add = { 0x0000000100000000UL,0x0000000300000002UL };
|
|
static const __m128i four = { 0x0000000400000004UL,0x0000000400000004UL };
|
|
static const __m128i rotl8 = { 0x0605040702010003UL,0x0e0d0c0f0a09080bUL };
|
|
static const __m128i rotl16 = { 0x0504070601000302UL,0x0d0c0f0e09080b0aUL };
|
|
|
|
if (bytes == 0)
|
|
return;
|
|
|
|
__asm__ __volatile__ (
|
|
"movl %[bytes], %[cnt]\n\t"
|
|
"shrl $8, %[cnt]\n\t"
|
|
"jz L_end128\n\t"
|
|
|
|
"vpshufd $0, (%[key]), %%xmm0\n\t"
|
|
"vpshufd $0, 4(%[key]), %%xmm1\n\t"
|
|
"vpshufd $0, 8(%[key]), %%xmm2\n\t"
|
|
"vpshufd $0, 12(%[key]), %%xmm3\n\t"
|
|
"vpshufd $0, 16(%[key]), %%xmm4\n\t"
|
|
"vpshufd $0, 20(%[key]), %%xmm5\n\t"
|
|
"vpshufd $0, 24(%[key]), %%xmm6\n\t"
|
|
"vpshufd $0, 28(%[key]), %%xmm7\n\t"
|
|
"vpshufd $0, 32(%[key]), %%xmm8\n\t"
|
|
"vpshufd $0, 36(%[key]), %%xmm9\n\t"
|
|
"vpshufd $0, 40(%[key]), %%xmm10\n\t"
|
|
"vpshufd $0, 44(%[key]), %%xmm11\n\t"
|
|
"vpshufd $0, 48(%[key]), %%xmm12\n\t"
|
|
"vpshufd $0, 52(%[key]), %%xmm13\n\t"
|
|
"vpshufd $0, 56(%[key]), %%xmm14\n\t"
|
|
"vpshufd $0, 60(%[key]), %%xmm15\n\t"
|
|
|
|
"vpaddd %[add], %%xmm12, %%xmm12\n\t"
|
|
|
|
"vmovdqa %%xmm0, (%[X])\n\t"
|
|
"vmovdqa %%xmm1, 16(%[X])\n\t"
|
|
"vmovdqa %%xmm2, 32(%[X])\n\t"
|
|
"vmovdqa %%xmm3, 48(%[X])\n\t"
|
|
"vmovdqa %%xmm4, 64(%[X])\n\t"
|
|
"vmovdqa %%xmm5, 80(%[X])\n\t"
|
|
"vmovdqa %%xmm6, 96(%[X])\n\t"
|
|
"vmovdqa %%xmm7, 112(%[X])\n\t"
|
|
"vmovdqa %%xmm8, 128(%[X])\n\t"
|
|
"vmovdqa %%xmm9, 144(%[X])\n\t"
|
|
"vmovdqa %%xmm10, 160(%[X])\n\t"
|
|
"vmovdqa %%xmm11, 176(%[X])\n\t"
|
|
"vmovdqa %%xmm12, 192(%[X])\n\t"
|
|
"vmovdqa %%xmm13, 208(%[X])\n\t"
|
|
"vmovdqa %%xmm14, 224(%[X])\n\t"
|
|
"vmovdqa %%xmm15, 240(%[X])\n\t"
|
|
"\n"
|
|
"L_enc128_loop:\n\t"
|
|
"vmovdqa %%xmm11, 48(%[x])\n\t"
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
QUARTERROUND_XMM()
|
|
QUARTERROUND_XMM_2()
|
|
"vmovdqa 48(%[x]), %%xmm11\n\t"
|
|
|
|
"vpaddd (%[X]), %%xmm0, %%xmm0\n\t"
|
|
"vpaddd 16(%[X]), %%xmm1, %%xmm1\n\t"
|
|
"vpaddd 32(%[X]), %%xmm2, %%xmm2\n\t"
|
|
"vpaddd 48(%[X]), %%xmm3, %%xmm3\n\t"
|
|
"vpaddd 64(%[X]), %%xmm4, %%xmm4\n\t"
|
|
"vpaddd 80(%[X]), %%xmm5, %%xmm5\n\t"
|
|
"vpaddd 96(%[X]), %%xmm6, %%xmm6\n\t"
|
|
"vpaddd 112(%[X]), %%xmm7, %%xmm7\n\t"
|
|
"vpaddd 128(%[X]), %%xmm8, %%xmm8\n\t"
|
|
"vpaddd 144(%[X]), %%xmm9, %%xmm9\n\t"
|
|
"vpaddd 160(%[X]), %%xmm10, %%xmm10\n\t"
|
|
"vpaddd 176(%[X]), %%xmm11, %%xmm11\n\t"
|
|
"vpaddd 192(%[X]), %%xmm12, %%xmm12\n\t"
|
|
"vpaddd 208(%[X]), %%xmm13, %%xmm13\n\t"
|
|
"vpaddd 224(%[X]), %%xmm14, %%xmm14\n\t"
|
|
"vpaddd 240(%[X]), %%xmm15, %%xmm15\n\t"
|
|
|
|
"vmovdqa %%xmm8, (%[x])\n\t"
|
|
"vmovdqa %%xmm9, 16(%[x])\n\t"
|
|
"vmovdqa %%xmm10, 32(%[x])\n\t"
|
|
"vmovdqa %%xmm11, 48(%[x])\n\t"
|
|
"vmovdqa %%xmm12, 64(%[x])\n\t"
|
|
"vmovdqa %%xmm13, 80(%[x])\n\t"
|
|
"vmovdqa %%xmm14, 96(%[x])\n\t"
|
|
"vmovdqa %%xmm15, 112(%[x])\n\t"
|
|
|
|
"vpunpckldq %%xmm1, %%xmm0, %%xmm8\n\t"
|
|
"vpunpckldq %%xmm3, %%xmm2, %%xmm9\n\t"
|
|
"vpunpckhdq %%xmm1, %%xmm0, %%xmm12\n\t"
|
|
"vpunpckhdq %%xmm3, %%xmm2, %%xmm13\n\t"
|
|
"vpunpckldq %%xmm5, %%xmm4, %%xmm10\n\t"
|
|
"vpunpckldq %%xmm7, %%xmm6, %%xmm11\n\t"
|
|
"vpunpckhdq %%xmm5, %%xmm4, %%xmm14\n\t"
|
|
"vpunpckhdq %%xmm7, %%xmm6, %%xmm15\n\t"
|
|
"vpunpcklqdq %%xmm9, %%xmm8, %%xmm0\n\t"
|
|
"vpunpcklqdq %%xmm11, %%xmm10, %%xmm1\n\t"
|
|
"vpunpckhqdq %%xmm9, %%xmm8, %%xmm2\n\t"
|
|
"vpunpckhqdq %%xmm11, %%xmm10, %%xmm3\n\t"
|
|
"vpunpcklqdq %%xmm13, %%xmm12, %%xmm4\n\t"
|
|
"vpunpcklqdq %%xmm15, %%xmm14, %%xmm5\n\t"
|
|
"vpunpckhqdq %%xmm13, %%xmm12, %%xmm6\n\t"
|
|
"vpunpckhqdq %%xmm15, %%xmm14, %%xmm7\n\t"
|
|
"vmovdqu (%[in]), %%xmm8\n\t"
|
|
"vmovdqu 16(%[in]), %%xmm9\n\t"
|
|
"vmovdqu 64(%[in]), %%xmm10\n\t"
|
|
"vmovdqu 80(%[in]), %%xmm11\n\t"
|
|
"vmovdqu 128(%[in]), %%xmm12\n\t"
|
|
"vmovdqu 144(%[in]), %%xmm13\n\t"
|
|
"vmovdqu 192(%[in]), %%xmm14\n\t"
|
|
"vmovdqu 208(%[in]), %%xmm15\n\t"
|
|
"vpxor %%xmm8, %%xmm0, %%xmm0\n\t"
|
|
"vpxor %%xmm9, %%xmm1, %%xmm1\n\t"
|
|
"vpxor %%xmm10, %%xmm2, %%xmm2\n\t"
|
|
"vpxor %%xmm11, %%xmm3, %%xmm3\n\t"
|
|
"vpxor %%xmm12, %%xmm4, %%xmm4\n\t"
|
|
"vpxor %%xmm13, %%xmm5, %%xmm5\n\t"
|
|
"vpxor %%xmm14, %%xmm6, %%xmm6\n\t"
|
|
"vpxor %%xmm15, %%xmm7, %%xmm7\n\t"
|
|
"vmovdqu %%xmm0, (%[out])\n\t"
|
|
"vmovdqu %%xmm1, 16(%[out])\n\t"
|
|
"vmovdqu %%xmm2, 64(%[out])\n\t"
|
|
"vmovdqu %%xmm3, 80(%[out])\n\t"
|
|
"vmovdqu %%xmm4, 128(%[out])\n\t"
|
|
"vmovdqu %%xmm5, 144(%[out])\n\t"
|
|
"vmovdqu %%xmm6, 192(%[out])\n\t"
|
|
"vmovdqu %%xmm7, 208(%[out])\n\t"
|
|
|
|
"vmovdqa (%[x]), %%xmm0\n\t"
|
|
"vmovdqa 16(%[x]), %%xmm1\n\t"
|
|
"vmovdqa 32(%[x]), %%xmm2\n\t"
|
|
"vmovdqa 48(%[x]), %%xmm3\n\t"
|
|
"vmovdqa 64(%[x]), %%xmm4\n\t"
|
|
"vmovdqa 80(%[x]), %%xmm5\n\t"
|
|
"vmovdqa 96(%[x]), %%xmm6\n\t"
|
|
"vmovdqa 112(%[x]), %%xmm7\n\t"
|
|
|
|
"vpunpckldq %%xmm1, %%xmm0, %%xmm8\n\t"
|
|
"vpunpckldq %%xmm3, %%xmm2, %%xmm9\n\t"
|
|
"vpunpckhdq %%xmm1, %%xmm0, %%xmm12\n\t"
|
|
"vpunpckhdq %%xmm3, %%xmm2, %%xmm13\n\t"
|
|
"vpunpckldq %%xmm5, %%xmm4, %%xmm10\n\t"
|
|
"vpunpckldq %%xmm7, %%xmm6, %%xmm11\n\t"
|
|
"vpunpckhdq %%xmm5, %%xmm4, %%xmm14\n\t"
|
|
"vpunpckhdq %%xmm7, %%xmm6, %%xmm15\n\t"
|
|
"vpunpcklqdq %%xmm9, %%xmm8, %%xmm0\n\t"
|
|
"vpunpcklqdq %%xmm11, %%xmm10, %%xmm1\n\t"
|
|
"vpunpckhqdq %%xmm9, %%xmm8, %%xmm2\n\t"
|
|
"vpunpckhqdq %%xmm11, %%xmm10, %%xmm3\n\t"
|
|
"vpunpcklqdq %%xmm13, %%xmm12, %%xmm4\n\t"
|
|
"vpunpcklqdq %%xmm15, %%xmm14, %%xmm5\n\t"
|
|
"vpunpckhqdq %%xmm13, %%xmm12, %%xmm6\n\t"
|
|
"vpunpckhqdq %%xmm15, %%xmm14, %%xmm7\n\t"
|
|
"vmovdqu 32(%[in]), %%xmm8\n\t"
|
|
"vmovdqu 48(%[in]), %%xmm9\n\t"
|
|
"vmovdqu 96(%[in]), %%xmm10\n\t"
|
|
"vmovdqu 112(%[in]), %%xmm11\n\t"
|
|
"vmovdqu 160(%[in]), %%xmm12\n\t"
|
|
"vmovdqu 176(%[in]), %%xmm13\n\t"
|
|
"vmovdqu 224(%[in]), %%xmm14\n\t"
|
|
"vmovdqu 240(%[in]), %%xmm15\n\t"
|
|
"vpxor %%xmm8, %%xmm0, %%xmm0\n\t"
|
|
"vpxor %%xmm9, %%xmm1, %%xmm1\n\t"
|
|
"vpxor %%xmm10, %%xmm2, %%xmm2\n\t"
|
|
"vpxor %%xmm11, %%xmm3, %%xmm3\n\t"
|
|
"vpxor %%xmm12, %%xmm4, %%xmm4\n\t"
|
|
"vpxor %%xmm13, %%xmm5, %%xmm5\n\t"
|
|
"vpxor %%xmm14, %%xmm6, %%xmm6\n\t"
|
|
"vpxor %%xmm15, %%xmm7, %%xmm7\n\t"
|
|
"vmovdqu %%xmm0, 32(%[out])\n\t"
|
|
"vmovdqu %%xmm1, 48(%[out])\n\t"
|
|
"vmovdqu %%xmm2, 96(%[out])\n\t"
|
|
"vmovdqu %%xmm3, 112(%[out])\n\t"
|
|
"vmovdqu %%xmm4, 160(%[out])\n\t"
|
|
"vmovdqu %%xmm5, 176(%[out])\n\t"
|
|
"vmovdqu %%xmm6, 224(%[out])\n\t"
|
|
"vmovdqu %%xmm7, 240(%[out])\n\t"
|
|
|
|
"vmovdqa 192(%[X]), %%xmm12\n\t"
|
|
"add $256, %[in]\n\t"
|
|
"add $256, %[out]\n\t"
|
|
"vpaddd %[four], %%xmm12, %%xmm12\n\t"
|
|
"sub $256, %[bytes]\n\t"
|
|
"vmovdqa %%xmm12, 192(%[X])\n\t"
|
|
"cmp $256, %[bytes]\n\t"
|
|
"jl L_done\n\t"
|
|
|
|
"vmovdqa (%[X]), %%xmm0\n\t"
|
|
"vmovdqa 16(%[X]), %%xmm1\n\t"
|
|
"vmovdqa 32(%[X]), %%xmm2\n\t"
|
|
"vmovdqa 48(%[X]), %%xmm3\n\t"
|
|
"vmovdqa 64(%[X]), %%xmm4\n\t"
|
|
"vmovdqa 80(%[X]), %%xmm5\n\t"
|
|
"vmovdqa 96(%[X]), %%xmm6\n\t"
|
|
"vmovdqa 112(%[X]), %%xmm7\n\t"
|
|
"vmovdqa 128(%[X]), %%xmm8\n\t"
|
|
"vmovdqa 144(%[X]), %%xmm9\n\t"
|
|
"vmovdqa 160(%[X]), %%xmm10\n\t"
|
|
"vmovdqa 176(%[X]), %%xmm11\n\t"
|
|
"vmovdqa 192(%[X]), %%xmm12\n\t"
|
|
"vmovdqa 208(%[X]), %%xmm13\n\t"
|
|
"vmovdqa 224(%[X]), %%xmm14\n\t"
|
|
"vmovdqa 240(%[X]), %%xmm15\n\t"
|
|
"jmp L_enc128_loop\n\t"
|
|
|
|
"\n"
|
|
"L_done:\n\t"
|
|
|
|
"shl $2, %[cnt]\n\t"
|
|
"add 48(%[key]), %[cnt]\n\t"
|
|
"movl %[cnt], 48(%[key])\n\t"
|
|
"\n"
|
|
"L_end128:"
|
|
: [bytes] "+r" (bytes), [cnt] "+r" (cnt),
|
|
[in] "+r" (m), [out] "+r" (c)
|
|
: [X] "r" (X), [x] "r" (x), [key] "r" (ctx->X),
|
|
[add] "xrm" (add), [four] "xrm" (four),
|
|
[rotl8] "xrm" (rotl8), [rotl16] "xrm" (rotl16)
|
|
: "xmm0", "xmm1", "xmm2", "xmm3",
|
|
"xmm4", "xmm5", "xmm6", "xmm7",
|
|
"xmm8", "xmm9", "xmm10", "xmm11",
|
|
"xmm12", "xmm13", "xmm14", "xmm15", "memory"
|
|
);
|
|
|
|
output = (byte*)x;
|
|
for (; bytes > 0;) {
|
|
wc_Chacha_wordtobyte(x, ctx->X);
|
|
ctx->X[CHACHA_IV_BYTES] = PLUSONE(ctx->X[CHACHA_IV_BYTES]);
|
|
if (bytes <= CHACHA_CHUNK_BYTES) {
|
|
for (i = 0; i < bytes; ++i) {
|
|
c[i] = m[i] ^ output[i];
|
|
}
|
|
return;
|
|
}
|
|
for (i = 0; i < CHACHA_CHUNK_BYTES; ++i) {
|
|
c[i] = m[i] ^ output[i];
|
|
}
|
|
bytes -= CHACHA_CHUNK_BYTES;
|
|
c += CHACHA_CHUNK_BYTES;
|
|
m += CHACHA_CHUNK_BYTES;
|
|
}
|
|
}
|
|
#endif /* HAVE_INTEL_AVX1 */
|
|
|
|
#ifdef HAVE_INTEL_AVX2
|
|
static void chacha_encrypt_avx2(ChaCha* ctx, const byte* m, byte* c,
|
|
word32 bytes)
|
|
{
|
|
ALIGN256 word32 X[8*CHACHA_CHUNK_WORDS]; /* used to make sure aligned */
|
|
ALIGN256 word32 x[4*CHACHA_CHUNK_WORDS]; /* used to make sure aligned */
|
|
byte* output;
|
|
word32 i;
|
|
word32 cnt = 0;
|
|
static const __m256i add = { 0x0000000100000000UL,0x0000000300000002UL,
|
|
0x0000000500000004UL,0x0000000700000006UL };
|
|
static const __m256i eight = { 0x0000000800000008UL,0x0000000800000008UL,
|
|
0x0000000800000008UL,0x0000000800000008UL };
|
|
static const __m256i rotl8 = { 0x0605040702010003UL,0x0e0d0c0f0a09080bUL,
|
|
0x0605040702010003UL,0x0e0d0c0f0a09080bUL };
|
|
static const __m256i rotl16 = { 0x0504070601000302UL,0x0d0c0f0e09080b0aUL,
|
|
0x0504070601000302UL,0x0d0c0f0e09080b0aUL };
|
|
|
|
if (bytes == 0)
|
|
return;
|
|
|
|
__asm__ __volatile__ (
|
|
"movl %[bytes], %[cnt]\n\t"
|
|
"shrl $9, %[cnt]\n\t"
|
|
"jz L_end256\n\t"
|
|
|
|
"vpbroadcastd (%[key]), %%ymm0\n\t"
|
|
"vpbroadcastd 4(%[key]), %%ymm1\n\t"
|
|
"vpbroadcastd 8(%[key]), %%ymm2\n\t"
|
|
"vpbroadcastd 12(%[key]), %%ymm3\n\t"
|
|
"vpbroadcastd 16(%[key]), %%ymm4\n\t"
|
|
"vpbroadcastd 20(%[key]), %%ymm5\n\t"
|
|
"vpbroadcastd 24(%[key]), %%ymm6\n\t"
|
|
"vpbroadcastd 28(%[key]), %%ymm7\n\t"
|
|
"vpbroadcastd 32(%[key]), %%ymm8\n\t"
|
|
"vpbroadcastd 36(%[key]), %%ymm9\n\t"
|
|
"vpbroadcastd 40(%[key]), %%ymm10\n\t"
|
|
"vpbroadcastd 44(%[key]), %%ymm11\n\t"
|
|
"vpbroadcastd 48(%[key]), %%ymm12\n\t"
|
|
"vpbroadcastd 52(%[key]), %%ymm13\n\t"
|
|
"vpbroadcastd 56(%[key]), %%ymm14\n\t"
|
|
"vpbroadcastd 60(%[key]), %%ymm15\n\t"
|
|
|
|
"vpaddd %[add], %%ymm12, %%ymm12\n\t"
|
|
|
|
"vmovdqa %%ymm0, (%[X])\n\t"
|
|
"vmovdqa %%ymm1, 32(%[X])\n\t"
|
|
"vmovdqa %%ymm2, 64(%[X])\n\t"
|
|
"vmovdqa %%ymm3, 96(%[X])\n\t"
|
|
"vmovdqa %%ymm4, 128(%[X])\n\t"
|
|
"vmovdqa %%ymm5, 160(%[X])\n\t"
|
|
"vmovdqa %%ymm6, 192(%[X])\n\t"
|
|
"vmovdqa %%ymm7, 224(%[X])\n\t"
|
|
"vmovdqa %%ymm8, 256(%[X])\n\t"
|
|
"vmovdqa %%ymm9, 288(%[X])\n\t"
|
|
"vmovdqa %%ymm10, 320(%[X])\n\t"
|
|
"vmovdqa %%ymm11, 352(%[X])\n\t"
|
|
"vmovdqa %%ymm12, 384(%[X])\n\t"
|
|
"vmovdqa %%ymm13, 416(%[X])\n\t"
|
|
"vmovdqa %%ymm14, 448(%[X])\n\t"
|
|
"vmovdqa %%ymm15, 480(%[X])\n\t"
|
|
"\n"
|
|
"L_enc256_loop:\n\t"
|
|
"vmovdqa %%ymm11, 96(%[x])\n\t"
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
QUARTERROUND_YMM()
|
|
QUARTERROUND_YMM_2()
|
|
"vmovdqa 96(%[x]), %%ymm11\n\t"
|
|
|
|
"vpaddd (%[X]), %%ymm0, %%ymm0\n\t"
|
|
"vpaddd 32(%[X]), %%ymm1, %%ymm1\n\t"
|
|
"vpaddd 64(%[X]), %%ymm2, %%ymm2\n\t"
|
|
"vpaddd 96(%[X]), %%ymm3, %%ymm3\n\t"
|
|
"vpaddd 128(%[X]), %%ymm4, %%ymm4\n\t"
|
|
"vpaddd 160(%[X]), %%ymm5, %%ymm5\n\t"
|
|
"vpaddd 192(%[X]), %%ymm6, %%ymm6\n\t"
|
|
"vpaddd 224(%[X]), %%ymm7, %%ymm7\n\t"
|
|
"vpaddd 256(%[X]), %%ymm8, %%ymm8\n\t"
|
|
"vpaddd 288(%[X]), %%ymm9, %%ymm9\n\t"
|
|
"vpaddd 320(%[X]), %%ymm10, %%ymm10\n\t"
|
|
"vpaddd 352(%[X]), %%ymm11, %%ymm11\n\t"
|
|
"vpaddd 384(%[X]), %%ymm12, %%ymm12\n\t"
|
|
"vpaddd 416(%[X]), %%ymm13, %%ymm13\n\t"
|
|
"vpaddd 448(%[X]), %%ymm14, %%ymm14\n\t"
|
|
"vpaddd 480(%[X]), %%ymm15, %%ymm15\n\t"
|
|
|
|
"vmovdqa %%ymm8, (%[x])\n\t"
|
|
"vmovdqa %%ymm9, 32(%[x])\n\t"
|
|
"vmovdqa %%ymm10, 64(%[x])\n\t"
|
|
"vmovdqa %%ymm11, 96(%[x])\n\t"
|
|
"vmovdqa %%ymm12, 128(%[x])\n\t"
|
|
"vmovdqa %%ymm13, 160(%[x])\n\t"
|
|
"vmovdqa %%ymm14, 192(%[x])\n\t"
|
|
"vmovdqa %%ymm15, 224(%[x])\n\t"
|
|
|
|
"vpunpckldq %%ymm1, %%ymm0, %%ymm8\n\t"
|
|
"vpunpckldq %%ymm3, %%ymm2, %%ymm9\n\t"
|
|
"vpunpckhdq %%ymm1, %%ymm0, %%ymm12\n\t"
|
|
"vpunpckhdq %%ymm3, %%ymm2, %%ymm13\n\t"
|
|
"vpunpckldq %%ymm5, %%ymm4, %%ymm10\n\t"
|
|
"vpunpckldq %%ymm7, %%ymm6, %%ymm11\n\t"
|
|
"vpunpckhdq %%ymm5, %%ymm4, %%ymm14\n\t"
|
|
"vpunpckhdq %%ymm7, %%ymm6, %%ymm15\n\t"
|
|
"vpunpcklqdq %%ymm9, %%ymm8, %%ymm0\n\t"
|
|
"vpunpcklqdq %%ymm11, %%ymm10, %%ymm1\n\t"
|
|
"vpunpckhqdq %%ymm9, %%ymm8, %%ymm2\n\t"
|
|
"vpunpckhqdq %%ymm11, %%ymm10, %%ymm3\n\t"
|
|
"vpunpcklqdq %%ymm13, %%ymm12, %%ymm4\n\t"
|
|
"vpunpcklqdq %%ymm15, %%ymm14, %%ymm5\n\t"
|
|
"vpunpckhqdq %%ymm13, %%ymm12, %%ymm6\n\t"
|
|
"vpunpckhqdq %%ymm15, %%ymm14, %%ymm7\n\t"
|
|
"vperm2i128 $0x20, %%ymm1, %%ymm0, %%ymm8\n\t"
|
|
"vperm2i128 $0x20, %%ymm3, %%ymm2, %%ymm9\n\t"
|
|
"vperm2i128 $0x31, %%ymm1, %%ymm0, %%ymm12\n\t"
|
|
"vperm2i128 $0x31, %%ymm3, %%ymm2, %%ymm13\n\t"
|
|
"vperm2i128 $0x20, %%ymm5, %%ymm4, %%ymm10\n\t"
|
|
"vperm2i128 $0x20, %%ymm7, %%ymm6, %%ymm11\n\t"
|
|
"vperm2i128 $0x31, %%ymm5, %%ymm4, %%ymm14\n\t"
|
|
"vperm2i128 $0x31, %%ymm7, %%ymm6, %%ymm15\n\t"
|
|
|
|
"vmovdqu (%[in]), %%ymm0\n\t"
|
|
"vmovdqu 64(%[in]), %%ymm1\n\t"
|
|
"vmovdqu 128(%[in]), %%ymm2\n\t"
|
|
"vmovdqu 192(%[in]), %%ymm3\n\t"
|
|
"vmovdqu 256(%[in]), %%ymm4\n\t"
|
|
"vmovdqu 320(%[in]), %%ymm5\n\t"
|
|
"vmovdqu 384(%[in]), %%ymm6\n\t"
|
|
"vmovdqu 448(%[in]), %%ymm7\n\t"
|
|
"vpxor %%ymm0, %%ymm8, %%ymm8\n\t"
|
|
"vpxor %%ymm1, %%ymm9, %%ymm9\n\t"
|
|
"vpxor %%ymm2, %%ymm10, %%ymm10\n\t"
|
|
"vpxor %%ymm3, %%ymm11, %%ymm11\n\t"
|
|
"vpxor %%ymm4, %%ymm12, %%ymm12\n\t"
|
|
"vpxor %%ymm5, %%ymm13, %%ymm13\n\t"
|
|
"vpxor %%ymm6, %%ymm14, %%ymm14\n\t"
|
|
"vpxor %%ymm7, %%ymm15, %%ymm15\n\t"
|
|
"vmovdqu %%ymm8, (%[out])\n\t"
|
|
"vmovdqu %%ymm9, 64(%[out])\n\t"
|
|
"vmovdqu %%ymm10, 128(%[out])\n\t"
|
|
"vmovdqu %%ymm11, 192(%[out])\n\t"
|
|
"vmovdqu %%ymm12, 256(%[out])\n\t"
|
|
"vmovdqu %%ymm13, 320(%[out])\n\t"
|
|
"vmovdqu %%ymm14, 384(%[out])\n\t"
|
|
"vmovdqu %%ymm15, 448(%[out])\n\t"
|
|
|
|
"vmovdqa (%[x]), %%ymm0\n\t"
|
|
"vmovdqa 32(%[x]), %%ymm1\n\t"
|
|
"vmovdqa 64(%[x]), %%ymm2\n\t"
|
|
"vmovdqa 96(%[x]), %%ymm3\n\t"
|
|
"vmovdqa 128(%[x]), %%ymm4\n\t"
|
|
"vmovdqa 160(%[x]), %%ymm5\n\t"
|
|
"vmovdqa 192(%[x]), %%ymm6\n\t"
|
|
"vmovdqa 224(%[x]), %%ymm7\n\t"
|
|
|
|
"vpunpckldq %%ymm1, %%ymm0, %%ymm8\n\t"
|
|
"vpunpckldq %%ymm3, %%ymm2, %%ymm9\n\t"
|
|
"vpunpckhdq %%ymm1, %%ymm0, %%ymm12\n\t"
|
|
"vpunpckhdq %%ymm3, %%ymm2, %%ymm13\n\t"
|
|
"vpunpckldq %%ymm5, %%ymm4, %%ymm10\n\t"
|
|
"vpunpckldq %%ymm7, %%ymm6, %%ymm11\n\t"
|
|
"vpunpckhdq %%ymm5, %%ymm4, %%ymm14\n\t"
|
|
"vpunpckhdq %%ymm7, %%ymm6, %%ymm15\n\t"
|
|
"vpunpcklqdq %%ymm9, %%ymm8, %%ymm0\n\t"
|
|
"vpunpcklqdq %%ymm11, %%ymm10, %%ymm1\n\t"
|
|
"vpunpckhqdq %%ymm9 , %%ymm8, %%ymm2\n\t"
|
|
"vpunpckhqdq %%ymm11, %%ymm10, %%ymm3\n\t"
|
|
"vpunpcklqdq %%ymm13, %%ymm12, %%ymm4\n\t"
|
|
"vpunpcklqdq %%ymm15, %%ymm14, %%ymm5\n\t"
|
|
"vpunpckhqdq %%ymm13, %%ymm12, %%ymm6\n\t"
|
|
"vpunpckhqdq %%ymm15, %%ymm14, %%ymm7\n\t"
|
|
"vperm2i128 $0x20, %%ymm1, %%ymm0, %%ymm8\n\t"
|
|
"vperm2i128 $0x20, %%ymm3, %%ymm2, %%ymm9\n\t"
|
|
"vperm2i128 $0x31, %%ymm1, %%ymm0, %%ymm12\n\t"
|
|
"vperm2i128 $0x31, %%ymm3, %%ymm2, %%ymm13\n\t"
|
|
"vperm2i128 $0x20, %%ymm5, %%ymm4, %%ymm10\n\t"
|
|
"vperm2i128 $0x20, %%ymm7, %%ymm6, %%ymm11\n\t"
|
|
"vperm2i128 $0x31, %%ymm5, %%ymm4, %%ymm14\n\t"
|
|
"vperm2i128 $0x31, %%ymm7, %%ymm6, %%ymm15\n\t"
|
|
|
|
"vmovdqu 32(%[in]), %%ymm0\n\t"
|
|
"vmovdqu 96(%[in]), %%ymm1\n\t"
|
|
"vmovdqu 160(%[in]), %%ymm2\n\t"
|
|
"vmovdqu 224(%[in]), %%ymm3\n\t"
|
|
"vmovdqu 288(%[in]), %%ymm4\n\t"
|
|
"vmovdqu 352(%[in]), %%ymm5\n\t"
|
|
"vmovdqu 416(%[in]), %%ymm6\n\t"
|
|
"vmovdqu 480(%[in]), %%ymm7\n\t"
|
|
"vpxor %%ymm0, %%ymm8, %%ymm8\n\t"
|
|
"vpxor %%ymm1, %%ymm9, %%ymm9\n\t"
|
|
"vpxor %%ymm2, %%ymm10, %%ymm10\n\t"
|
|
"vpxor %%ymm3, %%ymm11, %%ymm11\n\t"
|
|
"vpxor %%ymm4, %%ymm12, %%ymm12\n\t"
|
|
"vpxor %%ymm5, %%ymm13, %%ymm13\n\t"
|
|
"vpxor %%ymm6, %%ymm14, %%ymm14\n\t"
|
|
"vpxor %%ymm7, %%ymm15, %%ymm15\n\t"
|
|
"vmovdqu %%ymm8, 32(%[out])\n\t"
|
|
"vmovdqu %%ymm9, 96(%[out])\n\t"
|
|
"vmovdqu %%ymm10, 160(%[out])\n\t"
|
|
"vmovdqu %%ymm11, 224(%[out])\n\t"
|
|
"vmovdqu %%ymm12, 288(%[out])\n\t"
|
|
"vmovdqu %%ymm13, 352(%[out])\n\t"
|
|
"vmovdqu %%ymm14, 416(%[out])\n\t"
|
|
"vmovdqu %%ymm15, 480(%[out])\n\t"
|
|
|
|
"vmovdqa 384(%[X]), %%ymm12\n\t"
|
|
"add $512, %[in]\n\t"
|
|
"add $512, %[out]\n\t"
|
|
"vpaddd %[eight], %%ymm12, %%ymm12\n\t"
|
|
"sub $512, %[bytes]\n\t"
|
|
"vmovdqa %%ymm12, 384(%[X])\n\t"
|
|
"cmp $512, %[bytes]\n\t"
|
|
"jl L_done256\n\t"
|
|
|
|
"vmovdqa (%[X]), %%ymm0\n\t"
|
|
"vmovdqa 32(%[X]), %%ymm1\n\t"
|
|
"vmovdqa 64(%[X]), %%ymm2\n\t"
|
|
"vmovdqa 96(%[X]), %%ymm3\n\t"
|
|
"vmovdqa 128(%[X]), %%ymm4\n\t"
|
|
"vmovdqa 160(%[X]), %%ymm5\n\t"
|
|
"vmovdqa 192(%[X]), %%ymm6\n\t"
|
|
"vmovdqa 224(%[X]), %%ymm7\n\t"
|
|
"vmovdqa 256(%[X]), %%ymm8\n\t"
|
|
"vmovdqa 288(%[X]), %%ymm9\n\t"
|
|
"vmovdqa 320(%[X]), %%ymm10\n\t"
|
|
"vmovdqa 352(%[X]), %%ymm11\n\t"
|
|
"vmovdqa 384(%[X]), %%ymm12\n\t"
|
|
"vmovdqa 416(%[X]), %%ymm13\n\t"
|
|
"vmovdqa 448(%[X]), %%ymm14\n\t"
|
|
"vmovdqa 480(%[X]), %%ymm15\n\t"
|
|
"jmp L_enc256_loop\n\t"
|
|
"\n"
|
|
"L_done256:\n\t"
|
|
"shl $3, %[cnt]\n\t"
|
|
"add 48(%[key]), %[cnt]\n\t"
|
|
"movl %[cnt], 48(%[key])\n\t"
|
|
"\n"
|
|
"L_end256:"
|
|
: [bytes] "+r" (bytes), [cnt] "+r" (cnt),
|
|
[in] "+r" (m), [out] "+r" (c)
|
|
: [X] "r" (X), [x] "r" (x), [key] "r" (ctx->X),
|
|
[add] "m" (add), [eight] "m" (eight),
|
|
[rotl8] "m" (rotl8), [rotl16] "m" (rotl16)
|
|
: "ymm0", "ymm1", "ymm2", "ymm3",
|
|
"ymm4", "ymm5", "ymm6", "ymm7",
|
|
"ymm8", "ymm9", "ymm10", "ymm11",
|
|
"ymm12", "ymm13", "ymm14", "ymm15", "memory"
|
|
);
|
|
|
|
output = (byte*)x;
|
|
for (; bytes > 0;) {
|
|
wc_Chacha_wordtobyte(x, ctx->X);
|
|
ctx->X[CHACHA_IV_BYTES] = PLUSONE(ctx->X[CHACHA_IV_BYTES]);
|
|
if (bytes <= CHACHA_CHUNK_BYTES) {
|
|
for (i = 0; i < bytes; ++i) {
|
|
c[i] = m[i] ^ output[i];
|
|
}
|
|
return;
|
|
}
|
|
for (i = 0; i < CHACHA_CHUNK_BYTES; ++i) {
|
|
c[i] = m[i] ^ output[i];
|
|
}
|
|
bytes -= CHACHA_CHUNK_BYTES;
|
|
c += CHACHA_CHUNK_BYTES;
|
|
m += CHACHA_CHUNK_BYTES;
|
|
}
|
|
}
|
|
#endif /* HAVE_INTEL_AVX2 */
|
|
#endif /* USE_INTEL_CHACHA_SPEEDUP */
|
|
|
|
/**
|
|
* Encrypt a stream of bytes
|
|
*/
|
|
static void wc_Chacha_encrypt_bytes(ChaCha* ctx, const byte* m, byte* c,
|
|
word32 bytes)
|
|
{
|
|
byte* output;
|
|
word32 temp[CHACHA_CHUNK_WORDS]; /* used to make sure aligned */
|
|
word32 i;
|
|
|
|
output = (byte*)temp;
|
|
|
|
for (; bytes > 0;) {
|
|
wc_Chacha_wordtobyte(temp, ctx->X);
|
|
ctx->X[CHACHA_IV_BYTES] = PLUSONE(ctx->X[CHACHA_IV_BYTES]);
|
|
if (bytes <= CHACHA_CHUNK_BYTES) {
|
|
for (i = 0; i < bytes; ++i) {
|
|
c[i] = m[i] ^ output[i];
|
|
}
|
|
return;
|
|
}
|
|
for (i = 0; i < CHACHA_CHUNK_BYTES; ++i) {
|
|
c[i] = m[i] ^ output[i];
|
|
}
|
|
bytes -= CHACHA_CHUNK_BYTES;
|
|
c += CHACHA_CHUNK_BYTES;
|
|
m += CHACHA_CHUNK_BYTES;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* API to encrypt/decrypt a message of any size.
|
|
*/
|
|
int wc_Chacha_Process(ChaCha* ctx, byte* output, const byte* input,
|
|
word32 msglen)
|
|
{
|
|
if (ctx == NULL)
|
|
return BAD_FUNC_ARG;
|
|
|
|
#ifdef USE_INTEL_CHACHA_SPEEDUP
|
|
#ifdef HAVE_INTEL_AVX2
|
|
if (IS_INTEL_AVX2(cpuid_get_flags())) {
|
|
chacha_encrypt_avx2(ctx, input, output, msglen);
|
|
return 0;
|
|
}
|
|
#endif
|
|
if (IS_INTEL_AVX1(cpuid_get_flags())) {
|
|
chacha_encrypt_avx(ctx, input, output, msglen);
|
|
return 0;
|
|
}
|
|
#endif
|
|
wc_Chacha_encrypt_bytes(ctx, input, output, msglen);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* HAVE_CHACHA*/
|
|
|