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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef BASE_CRYPTO_CAPI_UTIL_H_ | |
6 #define BASE_CRYPTO_CAPI_UTIL_H_ | |
7 #pragma once | |
8 | |
9 #include <windows.h> | |
10 #include <wincrypt.h> | |
11 | |
12 #include "base/base_api.h" | |
13 | |
14 namespace base { | |
15 | |
16 // CryptAcquireContext when passed CRYPT_NEWKEYSET or CRYPT_DELETEKEYSET in | |
17 // flags is not thread-safe. For such calls, we create a global lock to | |
18 // synchronize it. | |
19 // | |
20 // From "Threading Issues with Cryptographic Service Providers", | |
21 // <http://msdn.microsoft.com/en-us/library/aa388149(v=VS.85).aspx>: | |
22 // | |
23 // "The CryptAcquireContext function is generally thread safe unless | |
24 // CRYPT_NEWKEYSET or CRYPT_DELETEKEYSET is specified in the dwFlags | |
25 // parameter." | |
26 BASE_API BOOL CryptAcquireContextLocked(HCRYPTPROV* prov, | |
27 LPCWSTR container, | |
28 LPCWSTR provider, | |
29 DWORD prov_type, | |
30 DWORD flags); | |
31 | |
32 } // namespace base | |
33 | |
34 #endif // BASE_CRYPTO_CAPI_UTIL_H_ | |
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