Botan  2.9.0
Crypto and TLS for C++11
serpent.h
Go to the documentation of this file.
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 
13 namespace Botan {
14 
15 /**
16 * Serpent is the most conservative of the AES finalists
17 * https://www.cl.cam.ac.uk/~rja14/serpent.html
18 */
19 class BOTAN_PUBLIC_API(2,0) Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
20  {
21  public:
22  void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
23  void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
24 
25  void clear() override;
26  std::string provider() const override;
27  std::string name() const override { return "Serpent"; }
28  BlockCipher* clone() const override { return new Serpent; }
29 
30  size_t parallelism() const override { return 4; }
31 
32  private:
33 
34 #if defined(BOTAN_HAS_SERPENT_SIMD)
35  void simd_encrypt_4(const uint8_t in[64], uint8_t out[64]) const;
36  void simd_decrypt_4(const uint8_t in[64], uint8_t out[64]) const;
37 #endif
38 
39 #if defined(BOTAN_HAS_SERPENT_AVX2)
40  void avx2_encrypt_8(const uint8_t in[64], uint8_t out[64]) const;
41  void avx2_decrypt_8(const uint8_t in[64], uint8_t out[64]) const;
42 #endif
43 
44  void key_schedule(const uint8_t key[], size_t length) override;
45 
46  secure_vector<uint32_t> m_round_key;
47  };
48 
49 }
50 
51 #endif
std::string name() const override
Definition: serpent.h:27
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
BlockCipher * clone() const override
Definition: serpent.h:28
size_t parallelism() const override
Definition: serpent.h:30
Definition: alg_id.cpp:13
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65