Move lib into src

3 files changed, 155 insertions, 0 deletions

diff --git a/src/lib/mac/hmac/hmac.cpp b/src/lib/mac/hmac/hmac.cpp
new file mode 100644
index 000000000..9e9a643db
--- /dev/null
+++ b/src/lib/mac/hmac/hmac.cpp
@@ -0,0 +1,97 @@
+/*
+* HMAC
+* (C) 1999-2007 Jack Lloyd
+*     2007 Yves Jerschow
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/hmac.h>
+#include <botan/internal/xor_buf.h>
+
+namespace Botan {
+
+/*
+* Update a HMAC Calculation
+*/
+void HMAC::add_data(const byte input[], size_t length)
+   {
+   hash->update(input, length);
+   }
+
+/*
+* Finalize a HMAC Calculation
+*/
+void HMAC::final_result(byte mac[])
+   {
+   hash->final(mac);
+   hash->update(o_key);
+   hash->update(mac, output_length());
+   hash->final(mac);
+   hash->update(i_key);
+   }
+
+/*
+* HMAC Key Schedule
+*/
+void HMAC::key_schedule(const byte key[], size_t length)
+   {
+   hash->clear();
+
+   i_key.resize(hash->hash_block_size());
+   o_key.resize(hash->hash_block_size());
+
+   std::fill(i_key.begin(), i_key.end(), 0x36);
+   std::fill(o_key.begin(), o_key.end(), 0x5C);
+
+   if(length > hash->hash_block_size())
+      {
+      secure_vector<byte> hmac_key = hash->process(key, length);
+      xor_buf(i_key, hmac_key, hmac_key.size());
+      xor_buf(o_key, hmac_key, hmac_key.size());
+      }
+   else
+      {
+      xor_buf(i_key, key, length);
+      xor_buf(o_key, key, length);
+      }
+
+   hash->update(i_key);
+   }
+
+/*
+* Clear memory of sensitive data
+*/
+void HMAC::clear()
+   {
+   hash->clear();
+   zap(i_key);
+   zap(o_key);
+   }
+
+/*
+* Return the name of this type
+*/
+std::string HMAC::name() const
+   {
+   return "HMAC(" + hash->name() + ")";
+   }
+
+/*
+* Return a clone of this object
+*/
+MessageAuthenticationCode* HMAC::clone() const
+   {
+   return new HMAC(hash->clone());
+   }
+
+/*
+* HMAC Constructor
+*/
+HMAC::HMAC(HashFunction* hash_in) : hash(hash_in)
+   {
+   if(hash->hash_block_size() == 0)
+      throw Invalid_Argument("HMAC cannot be used with " + hash->name());
+   }
+
+}
diff --git a/src/lib/mac/hmac/hmac.h b/src/lib/mac/hmac/hmac.h
new file mode 100644
index 000000000..39a084874
--- /dev/null
+++ b/src/lib/mac/hmac/hmac.h
@@ -0,0 +1,53 @@
+/*
+* HMAC
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_HMAC_H__
+#define BOTAN_HMAC_H__
+
+#include <botan/mac.h>
+#include <botan/hash.h>
+
+namespace Botan {
+
+/**
+* HMAC
+*/
+class BOTAN_DLL HMAC : public MessageAuthenticationCode
+   {
+   public:
+      void clear();
+      std::string name() const;
+      MessageAuthenticationCode* clone() const;
+
+      size_t output_length() const { return hash->output_length(); }
+
+      Key_Length_Specification key_spec() const
+         {
+         return Key_Length_Specification(0, 512);
+         }
+
+      /**
+      * @param hash the hash to use for HMACing
+      */
+      HMAC(HashFunction* hash);
+
+      HMAC(const HMAC&) = delete;
+      HMAC& operator=(const HMAC&) = delete;
+
+      ~HMAC() { delete hash; }
+   private:
+      void add_data(const byte[], size_t);
+      void final_result(byte[]);
+      void key_schedule(const byte[], size_t);
+
+      HashFunction* hash;
+      secure_vector<byte> i_key, o_key;
+   };
+
+}
+
+#endif
diff --git a/src/lib/mac/hmac/info.txt b/src/lib/mac/hmac/info.txt
new file mode 100644
index 000000000..7bc8b27f8
--- /dev/null
+++ b/src/lib/mac/hmac/info.txt
@@ -0,0 +1,5 @@
+define HMAC 20131128
+
+<requires>
+hash
+</requires>