Diff: wolfssl/wolfcrypt/blake2-impl.h

Revision:

0:d92f9d21154c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfssl/wolfcrypt/blake2-impl.h	Fri Jun 26 00:39:20 2015 +0000
@@ -0,0 +1,155 @@
+/*
+   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) 2006-2015 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL. (formerly known as CyaSSL)
+ *
+ * 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 02110-1301, USA
+ */
+
+
+#ifndef WOLFCRYPT_BLAKE2_IMPL_H
+#define WOLFCRYPT_BLAKE2_IMPL_H
+
+#include <wolfssl/wolfcrypt/types.h>
+
+static 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 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 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 inline void store64( void *dst, word64 w )
+{
+#if defined(LITTLE_ENDIAN_ORDER)
+  *( 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 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 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 inline word32 rotl32( const word32 w, const unsigned c )
+{
+  return ( w << c ) | ( w >> ( 32 - c ) );
+}
+
+static inline word64 rotl64( const word64 w, const unsigned c )
+{
+  return ( w << c ) | ( w >> ( 64 - c ) );
+}
+
+static inline word32 rotr32( const word32 w, const unsigned c )
+{
+  return ( w >> c ) | ( w << ( 32 - c ) );
+}
+
+static inline word64 rotr64( const word64 w, const unsigned c )
+{
+  return ( w >> c ) | ( w << ( 64 - c ) );
+}
+
+/* prevents compiler optimizing out memset() */
+static inline void secure_zero_memory( void *v, word64 n )
+{
+  volatile byte *p = ( volatile byte * )v;
+
+  while( n-- ) *p++ = 0;
+}
+
+#endif  /* WOLFCRYPT_BLAKE2_IMPL_H */
+
+