1 files changed, 57 insertions, 0 deletions
diff --git a/src/kdf/pbkdf1/pbkdf1.cpp b/src/kdf/pbkdf1/pbkdf1.cpp
new file mode 100644
index 000000000..70cff9eee
--- /dev/null
+++ b/src/kdf/pbkdf1/pbkdf1.cpp
@@ -0,0 +1,57 @@
+/*************************************************
+* PBKDF1 Source File                             *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/pbkdf1.h>
+#include <botan/lookup.h>
+#include <memory>
+
+namespace Botan {
+
+/*************************************************
+* Return a PKCS#5 PBKDF1 derived key             *
+*************************************************/
+OctetString PKCS5_PBKDF1::derive(u32bit key_len,
+                                 const std::string& passphrase,
+                                 const byte salt[], u32bit salt_size,
+                                 u32bit iterations) const
+   {
+   if(iterations == 0)
+      throw Invalid_Argument("PKCS#5 PBKDF1: Invalid iteration count");
+
+   std::auto_ptr<HashFunction> hash(get_hash(hash_name));
+   if(key_len > hash->OUTPUT_LENGTH)
+      throw Exception("PKCS#5 PBKDF1: Requested output length too long");
+
+   hash->update(passphrase);
+   hash->update(salt, salt_size);
+   SecureVector<byte> key = hash->final();
+
+   for(u32bit j = 1; j != iterations; ++j)
+      {
+      hash->update(key);
+      hash->final(key);
+      }
+
+   return OctetString(key, std::min(key_len, key.size()));
+   }
+
+/*************************************************
+* Return the name of this type                   *
+*************************************************/
+std::string PKCS5_PBKDF1::name() const
+   {
+   return "PBKDF1(" + hash_name + ")";
+   }
+
+/*************************************************
+* PKCS5_PBKDF1 Constructor                       *
+*************************************************/
+PKCS5_PBKDF1::PKCS5_PBKDF1(const std::string& h_name) : hash_name(h_name)
+   {
+   if(!have_hash(hash_name))
+      throw Algorithm_Not_Found(hash_name);
+   }
+
+}