1 files changed, 125 insertions, 0 deletions
diff --git a/include/aes/data.h b/include/aes/data.h
new file mode 100644
index 0000000..94cff2c
--- /dev/null
+++ b/include/aes/data.h
@@ -0,0 +1,125 @@
+/**
+ * \file
+ * \author Egor Tensin <Egor.Tensin@gmail.com>
+ * \date 2015
+ * \copyright This file is licensed under the terms of the MIT License.
+ *            See LICENSE.txt for details.
+ */
+
+#pragma once
+
+#include <emmintrin.h>
+#include <tmmintrin.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/**
+ * \brief Represents a 128-bit block.
+ */
+typedef __m128i AesNI_Block128;
+
+/**
+ * \brief Loads a 128-bit block from a memory location.
+ *
+ * \param[in] src The pointer to a memory location. Must not be `NULL`.
+ *
+ * \return The loaded 128-bit block.
+ */
+static __inline AesNI_Block128 aesni_load_block128(const void* src)
+{
+    return _mm_loadu_si128((AesNI_Block128*) src);
+}
+
+/**
+ * \brief Loads a 128-bit block from a 16-byte aligned memory location.
+ *
+ * \param[in] src The pointer to a 16-byte aligned memory location. Must not be `NULL`.
+ *
+ * \return The loaded 128-bit block.
+ */
+static __inline AesNI_Block128 aesni_load_block128_aligned(const void* src)
+{
+    return _mm_load_si128((AesNI_Block128*) src);
+}
+
+/**
+ * \brief Stores a 128-bit block in a memory location.
+ *
+ * \param[out] dest The pointer to a memory location. Must not be `NULL`.
+ *
+ * \param[in] block The block to be stored.
+ */
+static __inline void __fastcall aesni_store_block128(
+    void* dest,
+    AesNI_Block128 block)
+{
+    _mm_storeu_si128((AesNI_Block128*) dest, block);
+}
+
+/**
+ * \brief Stores a 128-bit block in a 16-byte aligned memory location.
+ *
+ * \param[out] dest The pointer to a 16-byte aligned memory location. Must not be `NULL`.
+ *
+ * \param[in] block The block to be stored.
+ */
+static __inline void __fastcall aesni_store_block128_aligned(
+    void* dest,
+    AesNI_Block128 block)
+{
+    _mm_store_si128((AesNI_Block128*) dest, block);
+}
+
+/**
+ * \brief XORs two 128-bit blocks.
+ *
+ * \param[in] a The first XOR operand.
+ * \param[in] b The second XOR operand.
+ *
+ * \return `a^b`.
+ */
+static __inline AesNI_Block128 __fastcall aesni_xor_block128(
+    AesNI_Block128 a,
+    AesNI_Block128 b)
+{
+    return _mm_xor_si128(a, b);
+}
+
+/**
+ * \brief Builds a 128-bit block from four 4-byte values.
+ *
+ * Builds a 128-bit block like this:
+ *
+ * * dest[127:96] = hi3
+ * * dest[95:64] = hi2
+ * * dest[63:32] = lo1
+ * * dest[31:0] = lo0
+ *
+ * \param[in] hi3 The most significant 4-byte value.
+ * \param[in] hi2 The more significant 4-byte value.
+ * \param[in] lo1 The less significant 4-byte value.
+ * \param[in] lo0 The least significant 4-byte value.
+ *
+ * \return The built 128-bit block.
+ */
+static __inline AesNI_Block128 __fastcall aesni_make_block128(int hi3, int hi2, int lo1, int lo0)
+{
+    return _mm_set_epi32(hi3, hi2, lo1, lo0);
+}
+
+static __inline AesNI_Block128 __fastcall aesni_reverse_byte_order_block128(AesNI_Block128 block)
+{
+    return _mm_shuffle_epi8(block, aesni_make_block128(0x00010203, 0x04050607, 0x08090a0b, 0x0c0d0e0f));
+}
+
+static __inline AesNI_Block128 __fastcall aesni_inc_block128(AesNI_Block128 x)
+{
+    return _mm_add_epi32(x, aesni_make_block128(0, 0, 0, 1));
+}
+
+#ifdef __cplusplus
+}
+#endif