unleashed-firmware/applications/plugins/totp/services/hmac/byteswap.c

14 lines
428 B
C

#include "byteswap.h"
uint32_t swap_uint32( uint32_t val )
{
val = ((val << 8) & 0xFF00FF00 ) | ((val >> 8) & 0xFF00FF );
return (val << 16) | (val >> 16);
}
uint64_t swap_uint64( uint64_t val )
{
val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
return (val << 32) | (val >> 32);
}