1 files changed, 107 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/mac/hmac/hmac.cpp b/src/libs/3rdparty/botan/src/lib/mac/hmac/hmac.cpp
new file mode 100644
index 0000000000..72c617c5b4
--- /dev/null
+++ b/src/libs/3rdparty/botan/src/lib/mac/hmac/hmac.cpp
@@ -0,0 +1,107 @@
+/*
+* HMAC
+* (C) 1999-2007,2014 Jack Lloyd
+*     2007 Yves Jerschow
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/hmac.h>
+
+namespace Botan {
+
+/*
+* Update a HMAC Calculation
+*/
+void HMAC::add_data(const uint8_t input[], size_t length)
+   {
+   verify_key_set(m_ikey.empty() == false);
+   m_hash->update(input, length);
+   }
+
+/*
+* Finalize a HMAC Calculation
+*/
+void HMAC::final_result(uint8_t mac[])
+   {
+   verify_key_set(m_okey.empty() == false);
+   m_hash->final(mac);
+   m_hash->update(m_okey);
+   m_hash->update(mac, output_length());
+   m_hash->final(mac);
+   m_hash->update(m_ikey);
+   }
+
+Key_Length_Specification HMAC::key_spec() const
+   {
+   // Support very long lengths for things like PBKDF2 and the TLS PRF
+   return Key_Length_Specification(0, 4096);
+   }
+
+/*
+* HMAC Key Schedule
+*/
+void HMAC::key_schedule(const uint8_t key[], size_t length)
+   {
+   m_hash->clear();
+
+   m_ikey.resize(m_hash->hash_block_size());
+   m_okey.resize(m_hash->hash_block_size());
+
+   const uint8_t ipad = 0x36;
+   const uint8_t opad = 0x5C;
+
+   std::fill(m_ikey.begin(), m_ikey.end(), ipad);
+   std::fill(m_okey.begin(), m_okey.end(), opad);
+
+   if(length > m_hash->hash_block_size())
+      {
+      secure_vector<uint8_t> hmac_key = m_hash->process(key, length);
+      xor_buf(m_ikey, hmac_key, hmac_key.size());
+      xor_buf(m_okey, hmac_key, hmac_key.size());
+      }
+   else
+      {
+      xor_buf(m_ikey, key, length);
+      xor_buf(m_okey, key, length);
+      }
+
+   m_hash->update(m_ikey);
+   }
+
+/*
+* Clear memory of sensitive data
+*/
+void HMAC::clear()
+   {
+   m_hash->clear();
+   zap(m_ikey);
+   zap(m_okey);
+   }
+
+/*
+* Return the name of this type
+*/
+std::string HMAC::name() const
+   {
+   return "HMAC(" + m_hash->name() + ")";
+   }
+
+/*
+* Return a clone of this object
+*/
+MessageAuthenticationCode* HMAC::clone() const
+   {
+   return new HMAC(m_hash->clone());
+   }
+
+/*
+* HMAC Constructor
+*/
+HMAC::HMAC(HashFunction* hash) : m_hash(hash)
+   {
+   BOTAN_ARG_CHECK(m_hash->hash_block_size() > 0,
+                   "HMAC is not compatible with this hash function");
+   }
+
+}