1// Copyright 2015 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
5package x509
6
7import "syscall"
8
9func init() {
10	v, err := syscall.GetVersion()
11	if err != nil {
12		return
13	}
14	if major := byte(v); major < 6 {
15		// Windows XP SP2 and Windows 2003 do not support SHA2.
16		// http://blogs.technet.com/b/pki/archive/2010/09/30/sha2-and-windows.aspx
17		supportSHA2 = false
18	}
19}
20