1 files changed, 42 insertions, 0 deletions
diff --git a/src/lib/filters/key_filt.cpp b/src/lib/filters/key_filt.cpp
new file mode 100644
index 000000000..ca554ae2c
--- /dev/null
+++ b/src/lib/filters/key_filt.cpp
@@ -0,0 +1,42 @@
+/*
+* (C) 2015 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/key_filt.h>
+#include <botan/cipher_mode.h>
+#include <botan/transform_filter.h>
+
+namespace Botan {
+
+Keyed_Filter* get_cipher(const std::string& algo_spec,
+                         Cipher_Dir direction)
+   {
+   std::unique_ptr<Cipher_Mode> c(get_cipher_mode(algo_spec, direction));
+   if(c)
+      return new Transform_Filter(c.release());
+   throw Algorithm_Not_Found(algo_spec);
+   }
+
+Keyed_Filter* get_cipher(const std::string& algo_spec,
+                         const SymmetricKey& key,
+                         const InitializationVector& iv,
+                         Cipher_Dir direction)
+   {
+   Keyed_Filter* cipher = get_cipher(algo_spec, key, direction);
+   if(iv.length())
+      cipher->set_iv(iv);
+   return cipher;
+   }
+
+Keyed_Filter* get_cipher(const std::string& algo_spec,
+                         const SymmetricKey& key,
+                         Cipher_Dir direction)
+   {
+   Keyed_Filter* cipher = get_cipher(algo_spec, direction);
+   cipher->set_key(key);
+   return cipher;
+   }
+
+}