1 files changed, 97 insertions, 0 deletions
diff --git a/src/lib/hash/sha3/sha3.h b/src/lib/hash/sha3/sha3.h
new file mode 100644
index 000000000..c877bd938
--- /dev/null
+++ b/src/lib/hash/sha3/sha3.h
@@ -0,0 +1,97 @@
+/*
+* SHA-3
+* (C) 2010,2016 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_SHA3_H__
+#define BOTAN_SHA3_H__
+
+#include <botan/hash.h>
+#include <botan/secmem.h>
+#include <string>
+
+namespace Botan {
+
+/**
+* SHA-3
+*/
+class BOTAN_DLL SHA_3 : public HashFunction
+   {
+   public:
+
+      /**
+      * @param output_bits the size of the hash output; must be one of
+      *                    224, 256, 384, or 512
+      */
+      SHA_3(size_t output_bits);
+
+      /**
+      * @param output_bits the size of the hash output; must be a
+      * multiple of 8 (ie, byte-wide outputs)
+      * @param capacity the capacity of the spong, normally always
+      * 2*output_bits with SHA-3.
+      */
+      SHA_3(size_t output_bits, size_t capacity);
+
+      size_t hash_block_size() const override { return m_bitrate / 8; }
+      size_t output_length() const override { return m_output_bits / 8; }
+
+      HashFunction* clone() const override;
+      std::string name() const override;
+      void clear() override;
+
+      /**
+      * The bare Keccak-1600 permutation
+      */
+      static void permute(u64bit A[25]);
+
+   private:
+      void add_data(const byte input[], size_t length) override;
+      void final_result(byte out[]) override;
+
+      size_t m_output_bits, m_bitrate;
+      secure_vector<u64bit> m_S;
+      size_t m_S_pos;
+   };
+
+/**
+* SHA-3-224
+*/
+class BOTAN_DLL SHA_3_224 final : public SHA_3
+   {
+   public:
+      SHA_3_224() : SHA_3(224) {}
+   };
+
+/**
+* SHA-3-256
+*/
+class BOTAN_DLL SHA_3_256 final : public SHA_3
+   {
+   public:
+      SHA_3_256() : SHA_3(256) {}
+   };
+
+/**
+* SHA-3-384
+*/
+class BOTAN_DLL SHA_3_384 final : public SHA_3
+   {
+   public:
+      SHA_3_384() : SHA_3(384) {}
+   };
+
+/**
+* SHA-3-512
+*/
+class BOTAN_DLL SHA_3_512 final : public SHA_3
+   {
+   public:
+      SHA_3_512() : SHA_3(512) {}
+   };
+
+}
+
+#endif