diff options
Diffstat (limited to 'src/pkg/runtime/thread_windows.c')
| -rw-r--r-- | src/pkg/runtime/thread_windows.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/pkg/runtime/thread_windows.c b/src/pkg/runtime/thread_windows.c index a7607a470a..c80a38a374 100644 --- a/src/pkg/runtime/thread_windows.c +++ b/src/pkg/runtime/thread_windows.c @@ -11,6 +11,9 @@ #pragma dynimport runtime·CreateEvent CreateEventA "kernel32.dll" #pragma dynimport runtime·CreateThread CreateThread "kernel32.dll" #pragma dynimport runtime·CreateWaitableTimer CreateWaitableTimerA "kernel32.dll" +#pragma dynimport runtime·CryptAcquireContextW CryptAcquireContextW "advapi32.dll" +#pragma dynimport runtime·CryptGenRandom CryptGenRandom "advapi32.dll" +#pragma dynimport runtime·CryptReleaseContext CryptReleaseContext "advapi32.dll" #pragma dynimport runtime·DuplicateHandle DuplicateHandle "kernel32.dll" #pragma dynimport runtime·ExitProcess ExitProcess "kernel32.dll" #pragma dynimport runtime·FreeEnvironmentStringsW FreeEnvironmentStringsW "kernel32.dll" @@ -39,6 +42,9 @@ extern void *runtime·CloseHandle; extern void *runtime·CreateEvent; extern void *runtime·CreateThread; extern void *runtime·CreateWaitableTimer; +extern void *runtime·CryptAcquireContextW; +extern void *runtime·CryptGenRandom; +extern void *runtime·CryptReleaseContext; extern void *runtime·DuplicateHandle; extern void *runtime·ExitProcess; extern void *runtime·FreeEnvironmentStringsW; @@ -82,6 +88,24 @@ runtime·osinit(void) } void +runtime·get_random_data(byte **rnd, int32 *rnd_len) +{ + uintptr handle; + *rnd = nil; + *rnd_len = 0; + if(runtime·stdcall(runtime·CryptAcquireContextW, 5, &handle, nil, nil, + (uintptr)1 /* PROV_RSA_FULL */, + (uintptr)0xf0000000U /* CRYPT_VERIFYCONTEXT */) != 0) { + static byte random_data[HashRandomBytes]; + if(runtime·stdcall(runtime·CryptGenRandom, 3, handle, (uintptr)HashRandomBytes, random_data)) { + *rnd = random_data; + *rnd_len = HashRandomBytes; + } + runtime·stdcall(runtime·CryptReleaseContext, 2, handle, (uintptr)0); + } +} + +void runtime·goenvs(void) { extern Slice syscall·envs; |