123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155 |
- /*
- BLAKE2 reference source code package - reference C implementations
- Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
- To the extent possible under law, the author(s) have dedicated all copyright
- and related and neighboring rights to this software to the public domain
- worldwide. This software is distributed without any warranty.
- You should have received a copy of the CC0 Public Domain Dedication along with
- this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
- */
- /* blake2-impl.h
- *
- * Copyright (C) 2006-2022 wolfSSL Inc.
- *
- * This file is part of wolfSSL.
- *
- * wolfSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * wolfSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
- */
- #ifndef WOLFCRYPT_BLAKE2_IMPL_H
- #define WOLFCRYPT_BLAKE2_IMPL_H
- #include <wolfssl/wolfcrypt/types.h>
- static WC_INLINE word32 load32( const void *src )
- {
- #if defined(LITTLE_ENDIAN_ORDER)
- return *( word32 * )( src );
- #else
- const byte *p = ( byte * )src;
- word32 w = *p++;
- w |= ( word32 )( *p++ ) << 8;
- w |= ( word32 )( *p++ ) << 16;
- w |= ( word32 )( *p++ ) << 24;
- return w;
- #endif
- }
- static WC_INLINE word64 load64( const void *src )
- {
- #if defined(LITTLE_ENDIAN_ORDER)
- return *( word64 * )( src );
- #else
- const byte *p = ( byte * )src;
- word64 w = *p++;
- w |= ( word64 )( *p++ ) << 8;
- w |= ( word64 )( *p++ ) << 16;
- w |= ( word64 )( *p++ ) << 24;
- w |= ( word64 )( *p++ ) << 32;
- w |= ( word64 )( *p++ ) << 40;
- w |= ( word64 )( *p++ ) << 48;
- w |= ( word64 )( *p++ ) << 56;
- return w;
- #endif
- }
- static WC_INLINE void store32( void *dst, word32 w )
- {
- #if defined(LITTLE_ENDIAN_ORDER)
- *( word32 * )( dst ) = w;
- #else
- byte *p = ( byte * )dst;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w;
- #endif
- }
- static WC_INLINE void store64( void *dst, word64 w )
- {
- #if defined(LITTLE_ENDIAN_ORDER) && !defined(WOLFSSL_GENERAL_ALIGNMENT)
- *( word64 * )( dst ) = w;
- #else
- byte *p = ( byte * )dst;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w;
- #endif
- }
- static WC_INLINE word64 load48( const void *src )
- {
- const byte *p = ( const byte * )src;
- word64 w = *p++;
- w |= ( word64 )( *p++ ) << 8;
- w |= ( word64 )( *p++ ) << 16;
- w |= ( word64 )( *p++ ) << 24;
- w |= ( word64 )( *p++ ) << 32;
- w |= ( word64 )( *p++ ) << 40;
- return w;
- }
- static WC_INLINE void store48( void *dst, word64 w )
- {
- byte *p = ( byte * )dst;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w; w >>= 8;
- *p++ = ( byte )w;
- }
- static WC_INLINE word32 rotl32( const word32 w, const unsigned c )
- {
- return ( w << c ) | ( w >> ( 32 - c ) );
- }
- static WC_INLINE word64 rotl64( const word64 w, const unsigned c )
- {
- return ( w << c ) | ( w >> ( 64 - c ) );
- }
- static WC_INLINE word32 rotr32( const word32 w, const unsigned c )
- {
- return ( w >> c ) | ( w << ( 32 - c ) );
- }
- static WC_INLINE word64 rotr64( const word64 w, const unsigned c )
- {
- return ( w >> c ) | ( w << ( 64 - c ) );
- }
- /* prevents compiler optimizing out memset() */
- static WC_INLINE void secure_zero_memory( void *v, word64 n )
- {
- volatile byte *p = ( volatile byte * )v;
- while( n-- ) *p++ = 0;
- }
- #endif /* WOLFCRYPT_BLAKE2_IMPL_H */
|