1 files changed, 49 insertions, 0 deletions
diff --git a/src/cipher/serpent_ia32/serp_ia32.cpp b/src/cipher/serpent_ia32/serp_ia32.cpp
new file mode 100644
index 000000000..2cd607c18
--- /dev/null
+++ b/src/cipher/serpent_ia32/serp_ia32.cpp
@@ -0,0 +1,49 @@
+/*************************************************
+* IA-32 Serpent Source File                      *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/serp_ia32.h>
+#include <botan/loadstor.h>
+
+namespace Botan {
+
+extern "C" {
+
+void botan_serpent_ia32_encrypt(const byte[16], byte[16], const u32bit[132]);
+void botan_serpent_ia32_decrypt(const byte[16], byte[16], const u32bit[132]);
+void botan_serpent_ia32_key_schedule(u32bit[140]);
+
+}
+
+/*************************************************
+* Serpent Encryption                             *
+*************************************************/
+void Serpent_IA32::enc(const byte in[], byte out[]) const
+   {
+   botan_serpent_ia32_encrypt(in, out, round_key);
+   }
+
+/*************************************************
+* Serpent Decryption                             *
+*************************************************/
+void Serpent_IA32::dec(const byte in[], byte out[]) const
+   {
+   botan_serpent_ia32_decrypt(in, out, round_key);
+   }
+
+/*************************************************
+* Serpent Key Schedule                           *
+*************************************************/
+void Serpent_IA32::key(const byte key[], u32bit length)
+   {
+   SecureBuffer<u32bit, 140> W;
+   for(u32bit j = 0; j != length / 4; ++j)
+      W[j] = make_u32bit(key[4*j+3], key[4*j+2], key[4*j+1], key[4*j]);
+   W[length / 4] |= u32bit(1) << ((length%4)*8);
+
+   botan_serpent_ia32_key_schedule(W);
+   round_key.copy(W + 8, 132);
+   }
+
+}