diff options
Diffstat (limited to 'thirdparty/mbedtls/library/entropy_poll.c')
| -rw-r--r-- | thirdparty/mbedtls/library/entropy_poll.c | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/thirdparty/mbedtls/library/entropy_poll.c b/thirdparty/mbedtls/library/entropy_poll.c index 5e8a090b37..a116e605d2 100644 --- a/thirdparty/mbedtls/library/entropy_poll.c +++ b/thirdparty/mbedtls/library/entropy_poll.c @@ -54,41 +54,28 @@ #define _WIN32_WINNT 0x0400 #endif #include <windows.h> -#include <bcrypt.h> -#if _MSC_VER <= 1600 -/* Visual Studio 2010 and earlier issue a warning when both <stdint.h> and <intsafe.h> are included, as they - * redefine a number of <TYPE>_MAX constants. These constants are guaranteed to be the same, though, so - * we suppress the warning when including intsafe.h. - */ -#pragma warning( push ) -#pragma warning( disable : 4005 ) -#endif -#include <intsafe.h> -#if _MSC_VER <= 1600 -#pragma warning( pop ) -#endif +#include <wincrypt.h> int mbedtls_platform_entropy_poll( void *data, unsigned char *output, size_t len, size_t *olen ) { - ULONG len_as_ulong = 0; + HCRYPTPROV provider; ((void) data); *olen = 0; - /* - * BCryptGenRandom takes ULONG for size, which is smaller than size_t on 64-bit platforms. - * Ensure len's value can be safely converted into a ULONG. - */ - if ( FAILED( SizeTToULong( len, &len_as_ulong ) ) ) + if( CryptAcquireContext( &provider, NULL, NULL, + PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) == FALSE ) { return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); } - if ( !BCRYPT_SUCCESS( BCryptGenRandom( NULL, output, len_as_ulong, BCRYPT_USE_SYSTEM_PREFERRED_RNG ) ) ) + if( CryptGenRandom( provider, (DWORD) len, output ) == FALSE ) { + CryptReleaseContext( provider, 0 ); return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); } + CryptReleaseContext( provider, 0 ); *olen = len; return( 0 ); |