1// Copyright 2010 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// Windows cryptographically secure pseudorandom number
6// generator.
7
8package rand
9
10import (
11	"internal/syscall/windows"
12)
13
14func init() { Reader = &rngReader{} }
15
16type rngReader struct{}
17
18func (r *rngReader) Read(b []byte) (int, error) {
19	if err := windows.ProcessPrng(b); err != nil {
20		return 0, err
21	}
22	return len(b), nil
23}
24