mirror of
https://github.com/FWGS/xash3d-fwgs.git
synced 2026-08-05 03:24:56 +08:00
108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
|
|
compat.c - mbedTLS platform overrides for targets upstream doesn't cover
|
|
Copyright (C) 2026 Xash3D FWGS contributors
|
|
|
|
This program 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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.
|
|
*/
|
|
|
|
/*
|
|
WinXP: legacy CryptGenRandom via advapi32
|
|
Source: ttps://learn.microsoft.com/en-us/windows/win32/api/wincrypt/nf-wincrypt-cryptgenrandom
|
|
|
|
PSVita: sceKernelGetRandomNumber from psp2/kernel/rng.h (64-byte cap).
|
|
Source: https://github.com/vitasdk/vita-headers/blob/master/include/psp2/kernel/rng.h
|
|
|
|
NSwitch: randomGet from libnx.
|
|
Source: https://github.com/switchbrew/libnx/blob/master/nx/include/switch/kernel/random.h
|
|
*/
|
|
|
|
#include "mbedtls/platform.h"
|
|
#include "psa/crypto.h"
|
|
|
|
#if defined( MBEDTLS_PLATFORM_MS_TIME_ALT )
|
|
|
|
mbedtls_ms_time_t mbedtls_ms_time( void )
|
|
{
|
|
extern double Platform_DoubleTime( void );
|
|
|
|
return (mbedtls_ms_time_t)( Platform_DoubleTime() * 1000.0 );
|
|
}
|
|
|
|
#endif /* MBEDTLS_PLATFORM_MS_TIME_ALT */
|
|
|
|
#if defined( MBEDTLS_PSA_DRIVER_GET_ENTROPY )
|
|
#if defined( _WIN32 ) && !defined( _WIN64 )
|
|
#include <windows.h>
|
|
#include <wincrypt.h>
|
|
int mbedtls_platform_get_entropy( psa_driver_get_entropy_flags_t flags, size_t *estimate_bits, unsigned char *output, size_t output_size )
|
|
{
|
|
if( flags != 0 )
|
|
return PSA_ERROR_NOT_SUPPORTED;
|
|
|
|
HCRYPTPROV prov;
|
|
if( !CryptAcquireContextW( &prov, NULL, NULL, PROV_RSA_FULL,
|
|
CRYPT_VERIFYCONTEXT | CRYPT_SILENT ))
|
|
return PSA_ERROR_INSUFFICIENT_ENTROPY;
|
|
|
|
if( !CryptGenRandom( prov, (DWORD)output_size, output ))
|
|
{
|
|
CryptReleaseContext( prov, 0 );
|
|
return PSA_ERROR_INSUFFICIENT_ENTROPY;
|
|
}
|
|
|
|
CryptReleaseContext( prov, 0 );
|
|
*estimate_bits = 8 * output_size;
|
|
return 0;
|
|
}
|
|
#elif defined( __vita__ )
|
|
#include <psp2/kernel/rng.h>
|
|
|
|
int mbedtls_platform_get_entropy( psa_driver_get_entropy_flags_t flags, size_t *estimate_bits, unsigned char *output, size_t output_size )
|
|
{
|
|
if( flags != 0 )
|
|
return PSA_ERROR_NOT_SUPPORTED;
|
|
|
|
size_t total = 0;
|
|
while( total < output_size )
|
|
{
|
|
size_t chunk = output_size - total;
|
|
|
|
if( chunk > 64 )
|
|
chunk = 64;
|
|
|
|
if( sceKernelGetRandomNumber( output + total, chunk ) != 0 )
|
|
return PSA_ERROR_INSUFFICIENT_ENTROPY;
|
|
|
|
total += chunk;
|
|
}
|
|
|
|
*estimate_bits = 8 * output_size;
|
|
return 0;
|
|
}
|
|
|
|
#elif defined( __SWITCH__ )
|
|
#include <switch.h>
|
|
|
|
int mbedtls_platform_get_entropy( psa_driver_get_entropy_flags_t flags, size_t *estimate_bits, unsigned char *output, size_t output_size )
|
|
{
|
|
if( flags != 0 )
|
|
return PSA_ERROR_NOT_SUPPORTED;
|
|
|
|
randomGet( output, output_size );
|
|
*estimate_bits = 8 * output_size;
|
|
return 0;
|
|
}
|
|
#else
|
|
#error "MBEDTLS_PSA_DRIVER_GET_ENTROPY enabled but no platform impl in compat.c"
|
|
#endif
|
|
|
|
#endif /* MBEDTLS_PSA_DRIVER_GET_ENTROPY */
|