early-access version 1503
This commit is contained in:
99
externals/mbedtls/library/ecp_curves.c
vendored
99
externals/mbedtls/library/ecp_curves.c
vendored
@@ -1,8 +1,31 @@
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/*
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* Elliptic curves over GF(p): curve-specific data and functions
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: GPL-2.0
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*
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* This file is provided under the Apache License 2.0, or the
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* GNU General Public License v2.0 or later.
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*
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* **********
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* Apache License 2.0:
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* **********
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*
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* **********
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* GNU General Public License v2.0 or later:
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*
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* This program 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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@@ -18,7 +41,7 @@
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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* **********
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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@@ -30,11 +53,18 @@
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#if defined(MBEDTLS_ECP_C)
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#include "mbedtls/ecp.h"
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#include "mbedtls/platform_util.h"
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#include <string.h>
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#if !defined(MBEDTLS_ECP_ALT)
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/* Parameter validation macros based on platform_util.h */
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#define ECP_VALIDATE_RET( cond ) \
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MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA )
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#define ECP_VALIDATE( cond ) \
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MBEDTLS_INTERNAL_VALIDATE( cond )
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#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
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!defined(inline) && !defined(__cplusplus)
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#define inline __inline
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@@ -46,11 +76,11 @@
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*/
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#if defined(MBEDTLS_HAVE_INT32)
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#define BYTES_TO_T_UINT_4( a, b, c, d ) \
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( (mbedtls_mpi_uint) a << 0 ) | \
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( (mbedtls_mpi_uint) b << 8 ) | \
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( (mbedtls_mpi_uint) c << 16 ) | \
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( (mbedtls_mpi_uint) d << 24 )
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#define BYTES_TO_T_UINT_4( a, b, c, d ) \
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( (mbedtls_mpi_uint) (a) << 0 ) | \
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( (mbedtls_mpi_uint) (b) << 8 ) | \
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( (mbedtls_mpi_uint) (c) << 16 ) | \
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( (mbedtls_mpi_uint) (d) << 24 )
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#define BYTES_TO_T_UINT_2( a, b ) \
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BYTES_TO_T_UINT_4( a, b, 0, 0 )
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@@ -62,14 +92,14 @@
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#else /* 64-bits */
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#define BYTES_TO_T_UINT_8( a, b, c, d, e, f, g, h ) \
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( (mbedtls_mpi_uint) a << 0 ) | \
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( (mbedtls_mpi_uint) b << 8 ) | \
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( (mbedtls_mpi_uint) c << 16 ) | \
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( (mbedtls_mpi_uint) d << 24 ) | \
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( (mbedtls_mpi_uint) e << 32 ) | \
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( (mbedtls_mpi_uint) f << 40 ) | \
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( (mbedtls_mpi_uint) g << 48 ) | \
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( (mbedtls_mpi_uint) h << 56 )
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( (mbedtls_mpi_uint) (a) << 0 ) | \
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( (mbedtls_mpi_uint) (b) << 8 ) | \
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( (mbedtls_mpi_uint) (c) << 16 ) | \
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( (mbedtls_mpi_uint) (d) << 24 ) | \
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( (mbedtls_mpi_uint) (e) << 32 ) | \
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( (mbedtls_mpi_uint) (f) << 40 ) | \
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( (mbedtls_mpi_uint) (g) << 48 ) | \
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( (mbedtls_mpi_uint) (h) << 56 )
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#define BYTES_TO_T_UINT_4( a, b, c, d ) \
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BYTES_TO_T_UINT_8( a, b, c, d, 0, 0, 0, 0 )
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@@ -748,6 +778,7 @@ cleanup:
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*/
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int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id )
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{
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ECP_VALIDATE_RET( grp != NULL );
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mbedtls_ecp_group_free( grp );
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grp->id = id;
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@@ -884,7 +915,7 @@ static inline void carry64( mbedtls_mpi_uint *dst, mbedtls_mpi_uint *carry )
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}
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#define WIDTH 8 / sizeof( mbedtls_mpi_uint )
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#define A( i ) N->p + i * WIDTH
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#define A( i ) N->p + (i) * WIDTH
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#define ADD( i ) add64( p, A( i ), &c )
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#define NEXT p += WIDTH; carry64( p, &c )
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#define LAST p += WIDTH; *p = c; while( ++p < end ) *p = 0
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@@ -949,7 +980,8 @@ cleanup:
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#else /* 64-bit */
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#define MAX32 N->n * 2
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#define A( j ) j % 2 ? (uint32_t)( N->p[j/2] >> 32 ) : (uint32_t)( N->p[j/2] )
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#define A( j ) (j) % 2 ? (uint32_t)( N->p[(j)/2] >> 32 ) : \
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(uint32_t)( N->p[(j)/2] )
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#define STORE32 \
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if( i % 2 ) { \
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N->p[i/2] &= 0x00000000FFFFFFFF; \
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@@ -983,20 +1015,21 @@ static inline void sub32( uint32_t *dst, uint32_t src, signed char *carry )
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* Helpers for the main 'loop'
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* (see fix_negative for the motivation of C)
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*/
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#define INIT( b ) \
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int ret; \
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signed char c = 0, cc; \
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uint32_t cur; \
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size_t i = 0, bits = b; \
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mbedtls_mpi C; \
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mbedtls_mpi_uint Cp[ b / 8 / sizeof( mbedtls_mpi_uint) + 1 ]; \
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\
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C.s = 1; \
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C.n = b / 8 / sizeof( mbedtls_mpi_uint) + 1; \
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C.p = Cp; \
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memset( Cp, 0, C.n * sizeof( mbedtls_mpi_uint ) ); \
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\
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MBEDTLS_MPI_CHK( mbedtls_mpi_grow( N, b * 2 / 8 / sizeof( mbedtls_mpi_uint ) ) ); \
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#define INIT( b ) \
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int ret; \
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signed char c = 0, cc; \
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uint32_t cur; \
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size_t i = 0, bits = (b); \
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mbedtls_mpi C; \
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mbedtls_mpi_uint Cp[ (b) / 8 / sizeof( mbedtls_mpi_uint) + 1 ]; \
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\
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C.s = 1; \
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C.n = (b) / 8 / sizeof( mbedtls_mpi_uint) + 1; \
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C.p = Cp; \
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memset( Cp, 0, C.n * sizeof( mbedtls_mpi_uint ) ); \
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\
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MBEDTLS_MPI_CHK( mbedtls_mpi_grow( N, (b) * 2 / 8 / \
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sizeof( mbedtls_mpi_uint ) ) ); \
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LOAD32;
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#define NEXT \
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@@ -1011,7 +1044,7 @@ static inline void sub32( uint32_t *dst, uint32_t src, signed char *carry )
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STORE32; i++; \
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cur = c > 0 ? c : 0; STORE32; \
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cur = 0; while( ++i < MAX32 ) { STORE32; } \
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if( c < 0 ) fix_negative( N, c, &C, bits );
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if( c < 0 ) MBEDTLS_MPI_CHK( fix_negative( N, c, &C, bits ) );
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/*
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* If the result is negative, we get it in the form
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