1 files changed, 49 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/sm3/sm3.h b/comm/third_party/botan/src/lib/hash/sm3/sm3.h
new file mode 100644
index 0000000000..268bd87fb3
--- /dev/null
+++ b/comm/third_party/botan/src/lib/hash/sm3/sm3.h
@@ -0,0 +1,49 @@
+/*
+* SM3
+* (C) 2017 Ribose Inc.
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_SM3_H_
+#define BOTAN_SM3_H_
+
+#include <botan/mdx_hash.h>
+
+BOTAN_FUTURE_INTERNAL_HEADER(sm3.h)
+
+namespace Botan {
+
+enum {
+  SM3_BLOCK_BYTES = 64,
+  SM3_DIGEST_BYTES = 32
+};
+
+/**
+* SM3
+*/
+class BOTAN_PUBLIC_API(2,2) SM3 final : public MDx_HashFunction
+   {
+   public:
+      std::string name() const override { return "SM3"; }
+      size_t output_length() const override { return SM3_DIGEST_BYTES; }
+      HashFunction* clone() const override { return new SM3; }
+      std::unique_ptr<HashFunction> copy_state() const override;
+
+      void clear() override;
+
+      SM3() : MDx_HashFunction(SM3_BLOCK_BYTES, true, true), m_digest(SM3_DIGEST_BYTES)
+         { clear(); }
+   private:
+      void compress_n(const uint8_t[], size_t blocks) override;
+      void copy_out(uint8_t[]) override;
+
+      /**
+      * The digest value
+      */
+      secure_vector<uint32_t> m_digest;
+   };
+
+}
+
+#endif