add BE-to-LE conversion functions

1 files changed, 12 insertions, 0 deletions

diff --git a/include/aesni/data.h b/include/aesni/data.h
index dec9367..4ed9f9f 100644
--- a/include/aesni/data.h
+++ b/include/aesni/data.h
@@ -45,6 +45,18 @@ typedef struct
 }
 Aes256KeySchedule;
 
+static __inline AesBlock128 __fastcall aes128_le2be(AesBlock128 block)
+{
+    __declspec(align(16)) char xs[16];
+    _mm_store_si128((__m128i*) xs, block);
+    return _mm_set_epi8(xs[0], xs[1], xs[2], xs[3], xs[4], xs[5], xs[6], xs[7], xs[8], xs[9], xs[10], xs[11], xs[12], xs[13], xs[14], xs[15]);
+}
+
+static __inline AesBlock128 __fastcall aes128_be2le(AesBlock128 block)
+{
+    return aes128_le2be(block);
+}
+
 AesBlock128 make_aes_block128(int hi3, int hi2, int lo1, int lo0);
 AesBlock192 make_aes_block192(int hi5, int hi4, int lo3, int lo2, int lo1, int lo0);
 AesBlock256 make_aes_block256(int hi7, int hi6, int hi5, int hi4, int lo3, int lo2, int lo1, int lo0);