Move all modules into src/ directory

3 files changed, 113 insertions, 0 deletions

diff --git a/src/modes/ctr/ctr.cpp b/src/modes/ctr/ctr.cpp
new file mode 100644
index 000000000..8b8c5f35f
--- /dev/null
+++ b/src/modes/ctr/ctr.cpp
@@ -0,0 +1,74 @@
+/*************************************************
+* CTR Mode Source File                           *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/ctr.h>
+#include <botan/lookup.h>
+#include <botan/xor_buf.h>
+#include <algorithm>
+
+namespace Botan {
+
+/*************************************************
+* CTR-BE Constructor                             *
+*************************************************/
+CTR_BE::CTR_BE(const std::string& cipher_name) :
+   BlockCipherMode(cipher_name, "CTR-BE", block_size_of(cipher_name), 1)
+   {
+   }
+
+/*************************************************
+* CTR-BE Constructor                             *
+*************************************************/
+CTR_BE::CTR_BE(const std::string& cipher_name, const SymmetricKey& key,
+               const InitializationVector& iv) :
+   BlockCipherMode(cipher_name, "CTR-BE", block_size_of(cipher_name), 1)
+   {
+   set_key(key);
+   set_iv(iv);
+   }
+
+/*************************************************
+* CTR-BE Encryption/Decryption                   *
+*************************************************/
+void CTR_BE::write(const byte input[], u32bit length)
+   {
+   u32bit copied = std::min(BLOCK_SIZE - position, length);
+   xor_buf(buffer + position, input, copied);
+   send(buffer + position, copied);
+   input += copied;
+   length -= copied;
+   position += copied;
+
+   if(position == BLOCK_SIZE)
+      increment_counter();
+
+   while(length >= BLOCK_SIZE)
+      {
+      xor_buf(buffer, input, BLOCK_SIZE);
+      send(buffer, BLOCK_SIZE);
+
+      input += BLOCK_SIZE;
+      length -= BLOCK_SIZE;
+      increment_counter();
+      }
+
+   xor_buf(buffer + position, input, length);
+   send(buffer + position, length);
+   position += length;
+   }
+
+/*************************************************
+* Increment the counter and update the buffer    *
+*************************************************/
+void CTR_BE::increment_counter()
+   {
+   for(s32bit j = BLOCK_SIZE - 1; j >= 0; --j)
+      if(++state[j])
+         break;
+   cipher->encrypt(state, buffer);
+   position = 0;
+   }
+
+}
diff --git a/src/modes/ctr/ctr.h b/src/modes/ctr/ctr.h
new file mode 100644
index 000000000..c3217a5d1
--- /dev/null
+++ b/src/modes/ctr/ctr.h
@@ -0,0 +1,29 @@
+/*************************************************
+* CTR Mode Header File                           *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_CTR_H__
+#define BOTAN_CTR_H__
+
+#include <botan/modebase.h>
+
+namespace Botan {
+
+/*************************************************
+* CTR-BE Mode                                    *
+*************************************************/
+class BOTAN_DLL CTR_BE : public BlockCipherMode
+   {
+   public:
+      CTR_BE(const std::string&);
+      CTR_BE(const std::string&,
+             const SymmetricKey&, const InitializationVector&);
+   private:
+      void write(const byte[], u32bit);
+      void increment_counter();
+   };
+
+}
+
+#endif
diff --git a/src/modes/ctr/modinfo.txt b/src/modes/ctr/modinfo.txt
new file mode 100644
index 000000000..912b80f51
--- /dev/null
+++ b/src/modes/ctr/modinfo.txt
@@ -0,0 +1,10 @@
+realname "CTR block cipher mode"
+
+define CTR
+
+load_on auto
+
+<add>
+ctr.cpp
+ctr.h
+</add>