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authorrvargas@google.com <rvargas@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2011-04-14 17:37:14 +0000
committerrvargas@google.com <rvargas@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2011-04-14 17:37:14 +0000
commit4b559b4ddffc0b7f688019bcb80658f05e063af7 (patch)
tree0be21d8914de707f5125d2cb66733cbcf088606c /crypto/capi_util.h
parent056dd45d610de34312344445d7b078a31f4a1e20 (diff)
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Move crypto files out of base, to a top level directory.
src/crypto is now an independent project that contains our cryptographic primitives (except md5 and sha1). This removes the base dependency from nss, openssl and sqlite. BUG=76996 TEST=none Review URL: http://codereview.chromium.org/6805019 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81611 0039d316-1c4b-4281-b951-d872f2087c98
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diff --git a/crypto/capi_util.h b/crypto/capi_util.h
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+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRYPTO_CAPI_UTIL_H_
+#define CRYPTO_CAPI_UTIL_H_
+#pragma once
+
+#include <windows.h>
+#include <wincrypt.h>
+
+namespace crypto {
+
+// CryptAcquireContext when passed CRYPT_NEWKEYSET or CRYPT_DELETEKEYSET in
+// flags is not thread-safe. For such calls, we create a global lock to
+// synchronize it.
+//
+// From "Threading Issues with Cryptographic Service Providers",
+// <http://msdn.microsoft.com/en-us/library/aa388149(v=VS.85).aspx>:
+//
+// "The CryptAcquireContext function is generally thread safe unless
+// CRYPT_NEWKEYSET or CRYPT_DELETEKEYSET is specified in the dwFlags
+// parameter."
+BOOL CryptAcquireContextLocked(HCRYPTPROV* prov,
+ LPCWSTR container,
+ LPCWSTR provider,
+ DWORD prov_type,
+ DWORD flags);
+
+} // namespace crypto
+
+#endif // CRYPTO_CAPI_UTIL_H_