Botan  2.4.0
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 
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 #if defined(BOTAN_HAS_SERPENT_SIMD)
34  /**
35  * Encrypt 4 blocks in parallel using SSE2 or AltiVec
36  */
37  void simd_encrypt_4(const uint8_t in[64], uint8_t out[64]) const;
38 
39  /**
40  * Decrypt 4 blocks in parallel using SSE2 or AltiVec
41  */
42  void simd_decrypt_4(const uint8_t in[64], uint8_t out[64]) const;
43 #endif
44 
45  void key_schedule(const uint8_t key[], size_t length) override;
46 
47  secure_vector<uint32_t> m_round_key;
48  };
49 
50 }
51 
52 #endif
std::string name() const override
Definition: serpent.h:27
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:27
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:88