Move lib into src

1 files changed, 40 insertions, 0 deletions

diff --git a/src/lib/kdf/kdf2/kdf2.cpp b/src/lib/kdf/kdf2/kdf2.cpp
new file mode 100644
index 000000000..39a929b58
--- /dev/null
+++ b/src/lib/kdf/kdf2/kdf2.cpp
@@ -0,0 +1,40 @@
+/*
+* KDF2
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/kdf2.h>
+
+namespace Botan {
+
+/*
+* KDF2 Key Derivation Mechanism
+*/
+secure_vector<byte> KDF2::derive(size_t out_len,
+                                const byte secret[], size_t secret_len,
+                                const byte P[], size_t P_len) const
+   {
+   secure_vector<byte> output;
+   u32bit counter = 1;
+
+   while(out_len && counter)
+      {
+      hash->update(secret, secret_len);
+      hash->update_be(counter);
+      hash->update(P, P_len);
+
+      secure_vector<byte> hash_result = hash->final();
+
+      size_t added = std::min(hash_result.size(), out_len);
+      output += std::make_pair(&hash_result[0], added);
+      out_len -= added;
+
+      ++counter;
+      }
+
+   return output;
+   }
+
+}