mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
24 lines
686 B
Go
24 lines
686 B
Go
// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
|
|
// Use of this source code is governed by an MIT license
|
|
// that can be found in the LICENSE file.
|
|
|
|
module rand
|
|
|
|
#flag windows -Llibraries/bcrypt -lbcrypt
|
|
#include <bcrypt.h>
|
|
|
|
const (
|
|
STATUS_SUCCESS = 0x00000000
|
|
BCRYPT_USE_SYSTEM_PREFERRED_RNG = 0x00000002
|
|
)
|
|
|
|
pub fn read(bytes_needed int) ?[]byte {
|
|
mut buffer := malloc(bytes_needed)
|
|
// use BCRYPT_USE_SYSTEM_PREFERRED_RNG because we passed null as algo
|
|
status := C.BCryptGenRandom(0, buffer, bytes_needed, BCRYPT_USE_SYSTEM_PREFERRED_RNG)
|
|
if status != STATUS_SUCCESS {
|
|
return ReadError
|
|
}
|
|
return c_array_to_bytes_tmp(bytes_needed, buffer)
|
|
}
|