1 files changed, 105 insertions, 0 deletions
diff --git a/old/botan/src/modes/ecb/ecb.cpp b/old/botan/src/modes/ecb/ecb.cpp
new file mode 100644
index 0000000..8da0a48
--- /dev/null
+++ b/old/botan/src/modes/ecb/ecb.cpp
@@ -0,0 +1,105 @@
+/*
+* ECB Mode
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/ecb.h>
+
+namespace Botan {
+
+/*
+* Verify the IV is not set
+*/
+bool ECB::valid_iv_size(u32bit iv_size) const
+   {
+   if(iv_size == 0)
+      return true;
+   return false;
+   }
+
+/*
+* Return an ECB mode name
+*/
+std::string ECB::name() const
+   {
+   return (cipher->name() + "/" + mode_name + "/" + padder->name());
+   }
+
+/*
+* Encrypt in ECB mode
+*/
+void ECB_Encryption::write(const byte input[], u32bit length)
+   {
+   buffer.copy(position, input, length);
+   if(position + length >= BLOCK_SIZE)
+      {
+      cipher->encrypt(buffer);
+      send(buffer, BLOCK_SIZE);
+      input += (BLOCK_SIZE - position);
+      length -= (BLOCK_SIZE - position);
+      while(length >= BLOCK_SIZE)
+         {
+         cipher->encrypt(input, buffer);
+         send(buffer, BLOCK_SIZE);
+         input += BLOCK_SIZE;
+         length -= BLOCK_SIZE;
+         }
+      buffer.copy(input, length);
+      position = 0;
+      }
+   position += length;
+   }
+
+/*
+* Finish encrypting in ECB mode
+*/
+void ECB_Encryption::end_msg()
+   {
+   SecureVector<byte> padding(BLOCK_SIZE);
+   padder->pad(padding, padding.size(), position);
+   write(padding, padder->pad_bytes(BLOCK_SIZE, position));
+   if(position != 0)
+      throw Encoding_Error(name() + ": Did not pad to full blocksize");
+   }
+
+/*
+* Decrypt in ECB mode
+*/
+void ECB_Decryption::write(const byte input[], u32bit length)
+   {
+   buffer.copy(position, input, length);
+   if(position + length > BLOCK_SIZE)
+      {
+      cipher->decrypt(buffer);
+      send(buffer, BLOCK_SIZE);
+      input += (BLOCK_SIZE - position);
+      length -= (BLOCK_SIZE - position);
+      while(length > BLOCK_SIZE)
+         {
+         cipher->decrypt(input, buffer);
+         send(buffer, BLOCK_SIZE);
+         input += BLOCK_SIZE;
+         length -= BLOCK_SIZE;
+         }
+      buffer.copy(input, length);
+      position = 0;
+      }
+   position += length;
+   }
+
+/*
+* Finish decrypting in ECB mode
+*/
+void ECB_Decryption::end_msg()
+   {
+   if(position != BLOCK_SIZE)
+      throw Decoding_Error(name());
+   cipher->decrypt(buffer);
+   send(buffer, padder->unpad(buffer, BLOCK_SIZE));
+   state = buffer;
+   position = 0;
+   }
+
+}