1 files changed, 60 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/blake2/blake2b.h b/comm/third_party/botan/src/lib/hash/blake2/blake2b.h
new file mode 100644
index 0000000000..9b0b655f25
--- /dev/null
+++ b/comm/third_party/botan/src/lib/hash/blake2/blake2b.h
@@ -0,0 +1,60 @@
+/*
+* BLAKE2b
+* (C) 2016 cynecx
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_BLAKE2B_H_
+#define BOTAN_BLAKE2B_H_
+
+#include <botan/hash.h>
+#include <string>
+#include <memory>
+
+BOTAN_FUTURE_INTERNAL_HEADER(blake2b.h)
+
+namespace Botan {
+
+/**
+* BLAKE2B
+*/
+class BOTAN_PUBLIC_API(2,0) BLAKE2b final : public HashFunction
+   {
+   public:
+      /**
+      * @param output_bits the output size of BLAKE2b in bits
+      */
+      explicit BLAKE2b(size_t output_bits = 512);
+
+      size_t hash_block_size() const override { return 128; }
+      size_t output_length() const override { return m_output_bits / 8; }
+
+      HashFunction* clone() const override;
+      std::string name() const override;
+      void clear() override;
+
+      std::unique_ptr<HashFunction> copy_state() const override;
+
+   private:
+      void add_data(const uint8_t input[], size_t length) override;
+      void final_result(uint8_t out[]) override;
+
+      void state_init();
+      void compress(const uint8_t* data, size_t blocks, uint64_t increment);
+
+      const size_t m_output_bits;
+
+      secure_vector<uint8_t> m_buffer;
+      size_t m_bufpos;
+
+      secure_vector<uint64_t> m_H;
+      uint64_t m_T[2];
+      uint64_t m_F[2];
+   };
+
+typedef BLAKE2b Blake2b;
+
+}
+
+#endif