Botan  2.13.0
Crypto and TLS for C++11
serpent.h
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1 /*
2 * Serpent
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_SERPENT_H_
9 #define BOTAN_SERPENT_H_
10 
11 #include <botan/block_cipher.h>
12 
14 
15 namespace Botan {
16 
17 /**
18 * Serpent is the most conservative of the AES finalists
19 * https://www.cl.cam.ac.uk/~rja14/serpent.html
20 */
21 class BOTAN_PUBLIC_API(2,0) Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
22  {
23  public:
24  void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
25  void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
26 
27  void clear() override;
28  std::string provider() const override;
29  std::string name() const override { return "Serpent"; }
30  BlockCipher* clone() const override { return new Serpent; }
31 
32  size_t parallelism() const override { return 4; }
33 
34  private:
35 
36 #if defined(BOTAN_HAS_SERPENT_SIMD)
37  void simd_encrypt_4(const uint8_t in[64], uint8_t out[64]) const;
38  void simd_decrypt_4(const uint8_t in[64], uint8_t out[64]) const;
39 #endif
40 
41 #if defined(BOTAN_HAS_SERPENT_AVX2)
42  void avx2_encrypt_8(const uint8_t in[64], uint8_t out[64]) const;
43  void avx2_decrypt_8(const uint8_t in[64], uint8_t out[64]) const;
44 #endif
45 
46  void key_schedule(const uint8_t key[], size_t length) override;
47 
48  secure_vector<uint32_t> m_round_key;
49  };
50 
51 }
52 
53 #endif
std::string name() const override
Definition: serpent.h:29
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
BlockCipher * clone() const override
Definition: serpent.h:30
size_t parallelism() const override
Definition: serpent.h:32
Definition: alg_id.cpp:13
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:139