1 files changed, 59 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/tiger/tiger.h b/comm/third_party/botan/src/lib/hash/tiger/tiger.h
new file mode 100644
index 0000000000..6e17ce83c9
--- /dev/null
+++ b/comm/third_party/botan/src/lib/hash/tiger/tiger.h
@@ -0,0 +1,59 @@
+/*
+* Tiger
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_TIGER_H_
+#define BOTAN_TIGER_H_
+
+#include <botan/mdx_hash.h>
+
+BOTAN_FUTURE_INTERNAL_HEADER(tiger.h)
+
+namespace Botan {
+
+/**
+* Tiger
+*/
+class BOTAN_PUBLIC_API(2,0) Tiger final : public MDx_HashFunction
+   {
+   public:
+      std::string name() const override;
+      size_t output_length() const override { return m_hash_len; }
+
+      HashFunction* clone() const override
+         {
+         return new Tiger(output_length(), m_passes);
+         }
+
+      std::unique_ptr<HashFunction> copy_state() const override;
+
+      void clear() override;
+
+      /**
+      * @param out_size specifies the output length; can be 16, 20, or 24
+      * @param passes to make in the algorithm
+      */
+      Tiger(size_t out_size = 24, size_t passes = 3);
+   private:
+      void compress_n(const uint8_t[], size_t block) override;
+      void copy_out(uint8_t[]) override;
+
+      static void pass(uint64_t& A, uint64_t& B, uint64_t& C,
+                       const secure_vector<uint64_t>& M,
+                       uint8_t mul);
+
+      static const uint64_t SBOX1[256];
+      static const uint64_t SBOX2[256];
+      static const uint64_t SBOX3[256];
+      static const uint64_t SBOX4[256];
+
+      secure_vector<uint64_t> m_X, m_digest;
+      const size_t m_hash_len, m_passes;
+   };
+
+}
+
+#endif