1 files changed, 45 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/block/sm4/sm4.h b/comm/third_party/botan/src/lib/block/sm4/sm4.h
new file mode 100644
index 0000000000..637ffd4bee
--- /dev/null
+++ b/comm/third_party/botan/src/lib/block/sm4/sm4.h
@@ -0,0 +1,45 @@
+/*
+* SM4
+* (C) 2017 Ribose Inc
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_SM4_H_
+#define BOTAN_SM4_H_
+
+#include <botan/block_cipher.h>
+
+BOTAN_FUTURE_INTERNAL_HEADER(sm4.h)
+
+namespace Botan {
+
+/**
+* SM4
+*/
+class BOTAN_PUBLIC_API(2,2) SM4 final : public Block_Cipher_Fixed_Params<16, 16>
+   {
+   public:
+      void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
+      void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
+
+      void clear() override;
+      std::string name() const override { return "SM4"; }
+      BlockCipher* clone() const override { return new SM4; }
+
+      std::string provider() const override;
+      size_t parallelism() const override;
+   private:
+      void key_schedule(const uint8_t[], size_t) override;
+
+#if defined(BOTAN_HAS_SM4_ARMV8)
+      void sm4_armv8_encrypt(const uint8_t in[], uint8_t out[], size_t blocks) const;
+      void sm4_armv8_decrypt(const uint8_t in[], uint8_t out[], size_t blocks) const;
+#endif
+
+      secure_vector<uint32_t> m_RK;
+   };
+
+}
+
+#endif