crypto: implement CmacGenerator

libraries/libvapours/include/vapours/crypto/crypto_cmac_generator.hpp

@@ -0,0 +1,51 @@
+/*
+ * 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_cmac_impl.hpp>
+
+namespace ams::crypto {
+
+    template<typename BlockCipher>
+    class CmacGenerator {
+        NON_COPYABLE(CmacGenerator);
+        NON_MOVEABLE(CmacGenerator);
+        private:
+            using Impl = impl::CmacImpl<BlockCipher>;
+        public:
+            static constexpr size_t MacSize = BlockCipher::BlockSize;
+        private:
+            Impl m_impl;
+        public:
+            CmacGenerator() { /* ... */ }
+
+            void Initialize(const BlockCipher *cipher) {
+                return m_impl.Initialize(cipher);
+            }
+
+            void Update(const void *data, size_t size) {
+                return m_impl.Update(data, size);
+            }
+
+            void GetMac(void *dst, size_t dst_size) {
+                return m_impl.GetMac(dst, dst_size);
+            }
+    };
+
+}