1 files changed, 53 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/block/serpent/serpent.h b/comm/third_party/botan/src/lib/block/serpent/serpent.h
new file mode 100644
index 0000000000..64eb8a8b04
--- /dev/null
+++ b/comm/third_party/botan/src/lib/block/serpent/serpent.h
@@ -0,0 +1,53 @@
+/*
+* Serpent
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_SERPENT_H_
+#define BOTAN_SERPENT_H_
+
+#include <botan/block_cipher.h>
+
+BOTAN_FUTURE_INTERNAL_HEADER(serpent.h)
+
+namespace Botan {
+
+/**
+* Serpent is the most conservative of the AES finalists
+* https://www.cl.cam.ac.uk/~rja14/serpent.html
+*/
+class BOTAN_PUBLIC_API(2,0) Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
+   {
+   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 provider() const override;
+      std::string name() const override { return "Serpent"; }
+      BlockCipher* clone() const override { return new Serpent; }
+
+      size_t parallelism() const override { return 4; }
+
+   private:
+
+#if defined(BOTAN_HAS_SERPENT_SIMD)
+      void simd_encrypt_4(const uint8_t in[64], uint8_t out[64]) const;
+      void simd_decrypt_4(const uint8_t in[64], uint8_t out[64]) const;
+#endif
+
+#if defined(BOTAN_HAS_SERPENT_AVX2)
+      void avx2_encrypt_8(const uint8_t in[64], uint8_t out[64]) const;
+      void avx2_decrypt_8(const uint8_t in[64], uint8_t out[64]) const;
+#endif
+
+      void key_schedule(const uint8_t key[], size_t length) override;
+
+      secure_vector<uint32_t> m_round_key;
+   };
+
+}
+
+#endif