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diff --git a/boost/detail/winapi/crypt.hpp b/boost/detail/winapi/crypt.hpp
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+++ b/boost/detail/winapi/crypt.hpp
@@ -0,0 +1,88 @@
+//  crypt.hpp  --------------------------------------------------------------//
+
+//  Copyright 2014 Antony Polukhin
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+
+#ifndef BOOST_DETAIL_WINAPI_CRYPT_HPP
+#define BOOST_DETAIL_WINAPI_CRYPT_HPP
+
+#include <boost/detail/winapi/basic_types.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost
+{
+namespace detail
+{
+namespace winapi
+{
+#if defined( BOOST_USE_WINDOWS_H )
+    typedef HCRYPTPROV HCRYPTPROV_;
+
+    using ::CryptEnumProvidersA;
+    using ::CryptAcquireContextA;
+    using ::CryptGenRandom;
+    using ::CryptReleaseContext;
+
+    const DWORD_ PROV_RSA_FULL_         = PROV_RSA_FULL;
+
+    const DWORD_ CRYPT_VERIFYCONTEXT_   = CRYPT_VERIFYCONTEXT;
+    const DWORD_ CRYPT_NEWKEYSET_       = CRYPT_NEWKEYSET;
+    const DWORD_ CRYPT_DELETEKEYSET_    = CRYPT_DELETEKEYSET;
+    const DWORD_ CRYPT_MACHINE_KEYSET_  = CRYPT_MACHINE_KEYSET;
+    const DWORD_ CRYPT_SILENT_          = CRYPT_SILENT;
+#else
+extern "C" {
+    typedef ULONG_PTR_ HCRYPTPROV_;
+
+    __declspec(dllimport) BOOL_ __stdcall
+        CryptEnumProvidersA(
+            DWORD_ dwIndex,
+            DWORD_ *pdwReserved,
+            DWORD_ dwFlags,
+            DWORD_ *pdwProvType,
+            LPSTR_ szProvName,
+            DWORD_ *pcbProvName
+    );
+
+    __declspec(dllimport) BOOL_ __stdcall
+        CryptAcquireContextA(
+            HCRYPTPROV_ *phProv,
+            LPCSTR_ pszContainer,
+            LPCSTR_ pszProvider,
+            DWORD_ dwProvType,
+            DWORD_ dwFlags
+    );
+
+    __declspec(dllimport) BOOL_ __stdcall
+        CryptGenRandom(
+            HCRYPTPROV_ hProv,
+            DWORD_ dwLen,
+            BYTE_ *pbBuffer
+    );
+
+    __declspec(dllimport) BOOL_ __stdcall
+        CryptReleaseContext(
+            HCRYPTPROV_ hProv,
+            DWORD_ dwFlags
+    );
+
+    const DWORD_ PROV_RSA_FULL_         = 1;
+
+    const DWORD_ CRYPT_VERIFYCONTEXT_   = 0xF0000000;
+    const DWORD_ CRYPT_NEWKEYSET_       = 8;
+    const DWORD_ CRYPT_DELETEKEYSET_    = 16;
+    const DWORD_ CRYPT_MACHINE_KEYSET_  = 32;
+    const DWORD_ CRYPT_SILENT_          = 64;
+}
+#endif
+}
+}
+}
+
+#endif // BOOST_DETAIL_WINAPI_CRYPT_HPP