mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
d26d7ae0e4
Building o//third_party/python now takes 5 seconds on my PC This change works towards modifying Python to use runtime dispatching when appropriate. For example, when loading the magnums in the socket module, it's a good idea to check if the magnum is zero, because that means the local system platform doesn't support it.
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/* clang-format off */
|
|
/*
|
|
BLAKE2 reference source code package - optimized C implementations
|
|
|
|
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
|
|
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
|
|
your option. The terms of these licenses can be found at:
|
|
|
|
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
|
|
- OpenSSL license : https://www.openssl.org/source/license.html
|
|
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
More information about the BLAKE2 hash function can be found at
|
|
https://blake2.net.
|
|
*/
|
|
#pragma once
|
|
#ifndef __BLAKE2_IMPL_H__
|
|
#define __BLAKE2_IMPL_H__
|
|
|
|
BLAKE2_LOCAL_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 = ( const 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
|
|
}
|
|
|
|
BLAKE2_LOCAL_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 = ( 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;
|
|
w |= ( uint64_t )( *p++ ) << 48;
|
|
w |= ( uint64_t )( *p++ ) << 56;
|
|
return w;
|
|
#endif
|
|
}
|
|
|
|
BLAKE2_LOCAL_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
|
|
}
|
|
|
|
BLAKE2_LOCAL_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
|
|
}
|
|
|
|
BLAKE2_LOCAL_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;
|
|
}
|
|
|
|
BLAKE2_LOCAL_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;
|
|
}
|
|
|
|
BLAKE2_LOCAL_INLINE(uint32_t) rotl32( const uint32_t w, const unsigned c )
|
|
{
|
|
return ( w << c ) | ( w >> ( 32 - c ) );
|
|
}
|
|
|
|
BLAKE2_LOCAL_INLINE(uint64_t) rotl64( const uint64_t w, const unsigned c )
|
|
{
|
|
return ( w << c ) | ( w >> ( 64 - c ) );
|
|
}
|
|
|
|
BLAKE2_LOCAL_INLINE(uint32_t) rotr32( const uint32_t w, const unsigned c )
|
|
{
|
|
return ( w >> c ) | ( w << ( 32 - c ) );
|
|
}
|
|
|
|
BLAKE2_LOCAL_INLINE(uint64_t) rotr64( const uint64_t w, const unsigned c )
|
|
{
|
|
return ( w >> c ) | ( w << ( 64 - c ) );
|
|
}
|
|
|
|
/* prevents compiler optimizing out memset() */
|
|
BLAKE2_LOCAL_INLINE(void) secure_zero_memory(void *v, size_t n)
|
|
{
|
|
static void *(*const volatile memset_v)(void *, int, size_t) = &memset;
|
|
memset_v(v, 0, n);
|
|
}
|
|
|
|
#endif
|
|
|