crypto: add aes (ecb, ctr, xts)

2020-04-05 23:25:28 -07:00
parent 8d1ada2a1b
commit e04679f05a
19 changed files with 3191 additions and 1 deletions
--- a/libraries/libvapours/include/vapours/crypto/crypto_aes_decryptor.hpp
+++ b/libraries/libvapours/include/vapours/crypto/crypto_aes_decryptor.hpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018-2020 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_aes_impl.hpp>
+
+namespace ams::crypto {
+
+    template<size_t _KeySize>
+    class AesDecryptor {
+        NON_COPYABLE(AesDecryptor);
+        NON_MOVEABLE(AesDecryptor);
+        private:
+            using Impl = impl::AesImpl<_KeySize>;
+        public:
+            static constexpr size_t KeySize      = Impl::KeySize;
+            static constexpr size_t BlockSize    = Impl::BlockSize;
+            static constexpr size_t RoundKeySize = Impl::RoundKeySize;
+        private:
+            Impl impl;
+        public:
+            AesDecryptor() { /* ... */ }
+
+            void Initialize(const void *key, size_t key_size) {
+                this->impl.Initialize(key, key_size, false);
+            }
+
+            void DecryptBlock(void *dst, size_t dst_size, const void *src, size_t src_size) const {
+                return this->impl.DecryptBlock(dst, dst_size, src, src_size);
+            }
+
+            const u8 *GetRoundKey() const {
+                return this->impl.GetRoundKey();
+            }
+    };
+
+    using AesDecryptor128 = AesDecryptor<16>;
+    using AesDecryptor192 = AesDecryptor<24>;
+    using AesDecryptor256 = AesDecryptor<32>;
+
+}