Botan 2.19.1
Crypto and TLS for C&
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
15namespace Botan {
16
17/**
18* Serpent is the most conservative of the AES finalists
19* https://www.cl.cam.ac.uk/~rja14/serpent.html
20*/
21class 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
virtual void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
virtual void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
virtual std::string provider() const
Definition: block_cipher.h:73
std::string name() const override
Definition: serpent.h:29
size_t parallelism() const override
Definition: serpent.h:32
BlockCipher * clone() const override
Definition: serpent.h:30
virtual void clear()=0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:136
Definition: alg_id.cpp:13
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65