1 files changed, 103 insertions, 0 deletions
diff --git a/botan/src/hash/par_hash/par_hash.cpp b/botan/src/hash/par_hash/par_hash.cpp
new file mode 100644
index 0000000..4b0c7c4
--- /dev/null
+++ b/botan/src/hash/par_hash/par_hash.cpp
@@ -0,0 +1,103 @@
+/*
+* Parallel
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/par_hash.h>
+
+namespace Botan {
+
+namespace {
+
+/*
+* Return the sum of the hash sizes
+*/
+u32bit sum_of_hash_lengths(const std::vector<HashFunction*>& hashes)
+   {
+   u32bit sum = 0;
+
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      sum += hashes[j]->OUTPUT_LENGTH;
+
+   return sum;
+   }
+
+}
+
+/*
+* Update the hash
+*/
+void Parallel::add_data(const byte input[], u32bit length)
+   {
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      hashes[j]->update(input, length);
+   }
+
+/*
+* Finalize the hash
+*/
+void Parallel::final_result(byte hash[])
+   {
+   u32bit offset = 0;
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      {
+      hashes[j]->final(hash + offset);
+      offset += hashes[j]->OUTPUT_LENGTH;
+      }
+   }
+
+/*
+* Return the name of this type
+*/
+std::string Parallel::name() const
+   {
+   std::string hash_names;
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      {
+      if(j)
+         hash_names += ',';
+      hash_names += hashes[j]->name();
+      }
+   return "Parallel(" + hash_names + ")";
+   }
+
+/*
+* Return a clone of this object
+*/
+HashFunction* Parallel::clone() const
+   {
+   std::vector<HashFunction*> hash_copies;
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      hash_copies.push_back(hashes[j]->clone());
+   return new Parallel(hash_copies);
+   }
+
+/*
+* Clear memory of sensitive data
+*/
+void Parallel::clear() throw()
+   {
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      hashes[j]->clear();
+   }
+
+/*
+* Parallel Constructor
+*/
+Parallel::Parallel(const std::vector<HashFunction*>& hash_in) :
+   HashFunction(sum_of_hash_lengths(hash_in)), hashes(hash_in)
+   {
+   }
+
+/*
+* Parallel Destructor
+*/
+Parallel::~Parallel()
+   {
+   for(u32bit j = 0; j != hashes.size(); ++j)
+      delete hashes[j];
+   }
+
+}