| // Copyright (c) 2012 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_ |
| |
| #include <windows.h> |
| #include <stddef.h> |
| |
| #include "crypto/crypto_export.h" |
| #include "crypto/wincrypt_shim.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." |
| CRYPTO_EXPORT BOOL CryptAcquireContextLocked(HCRYPTPROV* prov, |
| LPCWSTR container, |
| LPCWSTR provider, |
| DWORD prov_type, |
| DWORD flags); |
| |
| // Wrappers of malloc and free for CryptoAPI routines that need memory |
| // allocators, such as in CRYPT_DECODE_PARA. Such routines require WINAPI |
| // calling conventions. |
| CRYPTO_EXPORT void* WINAPI CryptAlloc(size_t size); |
| CRYPTO_EXPORT void WINAPI CryptFree(void* p); |
| |
| } // namespace crypto |
| |
| #endif // CRYPTO_CAPI_UTIL_H_ |