ams: support building unit test programs on windows/linux/macos

libraries/libvapours/include/vapours/crypto/impl/crypto_sha3_impl.hpp

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <vapours/common.hpp>
+#include <vapours/assert.hpp>
+#include <vapours/util.hpp>
+#include <vapours/crypto/impl/crypto_hash_function.hpp>
+#include <vapours/crypto/crypto_memory_clear.hpp>
+
+namespace ams::crypto {
+
+    struct Sha3Context;
+
+}
+
+namespace ams::crypto::impl {
+
+    template<size_t _HashSize>
+    class Sha3Impl {
+        public:
+            static constexpr size_t InternalStateSize = 200;
+            static constexpr size_t HashSize  = _HashSize;
+            static constexpr size_t BlockSize = InternalStateSize - 2 * HashSize;
+        private:
+            enum State {
+                State_None,
+                State_Initialized,
+                State_Done,
+            };
+        private:
+            u64 m_internal_state[InternalStateSize / sizeof(u64)];
+            size_t m_buffered_bytes;
+            State m_state;
+        public:
+            Sha3Impl() : m_state(State_None) { /* ... */ }
+            ~Sha3Impl() {
+                ClearMemory(this, sizeof(*this));
+            }
+
+            void Initialize();
+            void Update(const void *data, size_t size);
+            void GetHash(void *dst, size_t size);
+
+            void InitializeWithContext(const Sha3Context *context);
+            void GetContext(Sha3Context *context) const;
+        private:
+            void ProcessBlock();
+            void ProcessLastBlock();
+    };
+
+    static_assert(HashFunction<Sha3Impl<224 / BITSIZEOF(u8)>>);
+    static_assert(HashFunction<Sha3Impl<256 / BITSIZEOF(u8)>>);
+    static_assert(HashFunction<Sha3Impl<384 / BITSIZEOF(u8)>>);
+    static_assert(HashFunction<Sha3Impl<512 / BITSIZEOF(u8)>>);
+
+}