Library import 16 (#2433)

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1 files changed, 162 insertions, 0 deletions

diff --git a/contrib/tools/python3/Modules/_blake2/impl/blake2-impl.h b/contrib/tools/python3/Modules/_blake2/impl/blake2-impl.h
new file mode 100644
index 0000000000..9d2fbb72fc
--- /dev/null
+++ b/contrib/tools/python3/Modules/_blake2/impl/blake2-impl.h
@@ -0,0 +1,162 @@
+/*
+   BLAKE2 reference source code package - optimized 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/>.
+*/
+#pragma once
+#ifndef __BLAKE2_IMPL_H__
+#define __BLAKE2_IMPL_H__
+
+#if defined(_WIN32) || defined(WIN32)
+#include <windows.h>
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#define BLAKE2_IMPL_CAT(x,y) x ## y
+#define BLAKE2_IMPL_EVAL(x,y)  BLAKE2_IMPL_CAT(x,y)
+#define BLAKE2_IMPL_NAME(fun)  BLAKE2_IMPL_EVAL(fun, SUFFIX)
+
+static inline uint32_t load32( const void *src )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+  uint32_t w;
+  memcpy( &w, src, sizeof( w ) );
+  return w;
+#else
+  const uint8_t *p = ( uint8_t * )src;
+  uint32_t w = *p++;
+  w |= ( uint32_t )( *p++ ) <<  8;
+  w |= ( uint32_t )( *p++ ) << 16;
+  w |= ( uint32_t )( *p++ ) << 24;
+  return w;
+#endif
+}
+
+static inline uint64_t load64( const void *src )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+  uint64_t w;
+  memcpy( &w, src, sizeof( w ) );
+  return w;
+#else
+  const uint8_t *p = ( uint8_t * )src;
+  uint64_t w = *p++;
+  w |= ( uint64_t )( *p++ ) <<  8;
+  w |= ( uint64_t )( *p++ ) << 16;
+  w |= ( uint64_t )( *p++ ) << 24;
+  w |= ( uint64_t )( *p++ ) << 32;
+  w |= ( uint64_t )( *p++ ) << 40;
+  w |= ( uint64_t )( *p++ ) << 48;
+  w |= ( uint64_t )( *p++ ) << 56;
+  return w;
+#endif
+}
+
+static inline void store32( void *dst, uint32_t w )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+  memcpy( dst, &w, sizeof( w ) );
+#else
+  uint8_t *p = ( uint8_t * )dst;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w;
+#endif
+}
+
+static inline void store64( void *dst, uint64_t w )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+  memcpy( dst, &w, sizeof( w ) );
+#else
+  uint8_t *p = ( uint8_t * )dst;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w;
+#endif
+}
+
+static inline uint64_t load48( const void *src )
+{
+  const uint8_t *p = ( const uint8_t * )src;
+  uint64_t w = *p++;
+  w |= ( uint64_t )( *p++ ) <<  8;
+  w |= ( uint64_t )( *p++ ) << 16;
+  w |= ( uint64_t )( *p++ ) << 24;
+  w |= ( uint64_t )( *p++ ) << 32;
+  w |= ( uint64_t )( *p++ ) << 40;
+  return w;
+}
+
+static inline void store48( void *dst, uint64_t w )
+{
+  uint8_t *p = ( uint8_t * )dst;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w; w >>= 8;
+  *p++ = ( uint8_t )w;
+}
+
+static inline uint32_t rotl32( const uint32_t w, const unsigned c )
+{
+  return ( w << c ) | ( w >> ( 32 - c ) );
+}
+
+static inline uint64_t rotl64( const uint64_t w, const unsigned c )
+{
+  return ( w << c ) | ( w >> ( 64 - c ) );
+}
+
+static inline uint32_t rotr32( const uint32_t w, const unsigned c )
+{
+  return ( w >> c ) | ( w << ( 32 - c ) );
+}
+
+static inline uint64_t rotr64( const uint64_t w, const unsigned c )
+{
+  return ( w >> c ) | ( w << ( 64 - c ) );
+}
+
+/* prevents compiler optimizing out memset() */
+static inline void secure_zero_memory(void *v, size_t n)
+{
+#if defined(_WIN32) || defined(WIN32)
+  SecureZeroMemory(v, n);
+#elif defined(__hpux)
+  static void *(*const volatile memset_v)(void *, int, size_t) = &memset;
+  memset_v(v, 0, n);
+#else
+// prioritize first the general C11 call
+#if defined(HAVE_MEMSET_S)
+  memset_s(v, n, 0, n);
+#elif defined(HAVE_EXPLICIT_BZERO)
+  explicit_bzero(v, n);
+#elif defined(HAVE_EXPLICIT_MEMSET)
+  explicit_memset(v, 0, n);
+#else
+  memset(v, 0, n);
+  __asm__ __volatile__("" :: "r"(v) : "memory");
+#endif
+#endif
+}
+
+#endif
+