Botan 3.0.0
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
13namespace Botan {
14
15/**
16* Serpent is the most conservative of the AES finalists
17* https://www.cl.cam.ac.uk/~rja14/serpent.html
18*/
19class 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 std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<Serpent>(); }
29
30 size_t parallelism() const override { return 4; }
31 bool has_keying_material() const override;
32
33 private:
34
35#if defined(BOTAN_HAS_SERPENT_SIMD)
36 void simd_encrypt_4(const uint8_t in[64], uint8_t out[64]) const;
37 void simd_decrypt_4(const uint8_t in[64], uint8_t out[64]) const;
38#endif
39
40#if defined(BOTAN_HAS_SERPENT_AVX2)
41 void avx2_encrypt_8(const uint8_t in[128], uint8_t out[128]) const;
42 void avx2_decrypt_8(const uint8_t in[128], uint8_t out[128]) 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
bool has_keying_material() const override
Definition: serpent.cpp:177
std::string provider() const override
Definition: serpent.cpp:252
std::string name() const override
Definition: serpent.h:27
void clear() override
Definition: serpent.cpp:247
size_t parallelism() const override
Definition: serpent.h:30
std::unique_ptr< BlockCipher > new_object() const override
Definition: serpent.h:28
void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override
Definition: serpent.cpp:22
void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override
Definition: serpent.cpp:101
int(* final)(unsigned char *, CTX *)
Definition: alg_id.cpp:12
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:64