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7373a26333
* Remove beast::static_initializer * Remove noexcept VS2013 workaround * Use [[noreturn]] attribute
91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_CRYPTO_MAC_FACADE_H_INCLUDED
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#define BEAST_CRYPTO_MAC_FACADE_H_INCLUDED
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#include <beast/crypto/secure_erase.h>
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#include <beast/hash/endian.h>
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#include <type_traits>
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#include <array>
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namespace beast {
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namespace detail {
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// Message Authentication Code (MAC) facade
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template <class Context, bool Secure>
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class mac_facade
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{
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private:
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Context ctx_;
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public:
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static beast::endian const endian =
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beast::endian::native;
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using result_type =
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std::array<std::uint8_t,
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Context::digest_size>;
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mac_facade() noexcept
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{
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init(ctx_);
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}
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~mac_facade()
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{
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erase(std::integral_constant<
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bool, Secure>{});
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}
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void
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operator()(void const* data,
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std::size_t size) noexcept
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{
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update(ctx_, data, size);
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}
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explicit
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operator result_type() noexcept
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{
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result_type digest;
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finish(ctx_, &digest[0]);
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return digest;
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}
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private:
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inline
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void
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erase (std::false_type) noexcept
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{
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}
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inline
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void
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erase (std::true_type) noexcept
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{
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secure_erase(&ctx_, sizeof(ctx_));
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}
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};
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} // detail
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} // beast
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#endif
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